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Organic pigments play several roles in powder coatings: 1. Color effects: Organic pigments can give powder coatings rich color effects, making them attractive and decorative. Different organic pigments can produce different colors and shades to meet the needs of different customers. 2. Covering power: Organic pigments can provide good covering power so that the powder coating can effectively cover the color and surface defects of the substrate. This is important for applications where it is necessary to hide substrate imperfections or change the color of the substrate. 3. Light Resistance: Organic pigments provide good light resistance so that powder coatings are less likely to fade or discolor under prolonged exposure. This is important for outdoor applications or products that require long term color stability. 4. Chemical resistance: Organic pigments can provide a certain degree of chemical resistance, so that the powder coating can resist the erosion and corrosion of some chemical substances. This is very important for the application of some special environments, such as chemical plants, marine equipment. 5. heat resistance: organic pigments can provide a certain degree of heat resistance, so that the powder coating can maintain color stability and performance at high temperatures. This is very important for products that need to be used in high temperature conditions, such as automobile hoods, baking paint equipment, etc. 6. Weatherability: Organic pigments provide a degree of weatherability that enables powder coatings to maintain color stability and performance in harsh climatic conditions. This is important for outdoor applications or products that require long-term exposure to the natural environment. In short, organic pigments play a variety of roles in powder coatings, such as color effect, hiding power, light resistance, chemical resistance, heat resistance and weathering resistance, making powder coatings have a wealth of color options and excellent performance characteristics.

The size of organic pigment particles has a great influence on the color performance of coatings. On the one hand, it affects the covering power and coloring power of the paint, within a certain range of pigment particle size, the covering power of the paint increases; when the pigment particles become small, the specific surface increases, and the coloring power of the paint increases. Pigment particle size also has an effect on the color light of the paint, usually the particle size is large, the particle size distribution is wide, the color light is dark; on the contrary, the color light is bright. On the other hand, pigment particle size also affects the UV resistance of paint. When the particle becomes small, the specific surface area increases, the absorbed light energy increases, the degree of destruction also increases, so the paint fades faster. Pigment particle size is small, the gravity is small, the paint is not easy to stratify and precipitate; but the pigment with small particle size has large specific surface area, the surface energy increases so that the chance of flocculation and roughness of the paint increases, which is not conducive to grinding and dispersion. Most organic pigments exist in crystal state, and the phenomenon of "homogeneous heterocrystal" is very common. Copper phthalocyanine crystal, common Q-type red blue (such as pigment blue 15) poor stability, after specific solvent treatment is turned into a stable P-type green blue (such as 15:3); pigment violet 19 (quinolone structure) has α, β and γ 3 kinds of crystal, α-type has no value, β-type for the purple-red, and γ-type for the blue red. In the design of coating formulations, pay attention to the rational use of additives and solvents to prevent different crystal types from transforming under certain conditions, which will cause the coating to undergo chromatic drift and make it difficult to find the right color according to the standard plate. Organic pigments are dispersed in solid state in the applied coating medium. Whether the pigments are easily dispersed or not, as well as the stability of the dispersed system directly affects the performance of the coating and the coating film. The dispersion performance of pigment in coating depends on many kinds of factors, such as the chemical structure of pigment, crystal type, surface treatment process and auxiliaries, the original particle size and particle size distribution of pigment before application; in addition, the grinding process of the coating and the performance of the grinding equipment itself, and the selection of dispersant will also affect the dispersion stability of pigment.

What is the difference between organic and inorganic pigments? The following is to explain for you: 1. pigments have soluble and insoluble, inorganic pigments and organic pigments are different. Inorganic pigments are generally mineral pigments, with inorganic pigments and colored earth and mineral pigments in the rock wall spray paint coating body changes humans have long known. 2, organic pigments are generally taken from plants and marine animals, such as Ancient Rome from the shellfish extracted from the clinoptilolite, garcinia cambogia, purple and so on. Pigment red 166 is pure yellow-red. It is mainly used for coloring plastics and inks. It is not easy to remove in soft PVC. Has medium coloring power. Covering power. Very good light and weather resistance. Heat resistance up to 300°C in HDPE. Also used in polyacrylonitrile . Polystyrene and rubber coloring. Also recommended for high-grade industrial car paints, packaging inks and metal decorative inks. Pigment Red 242 quinuclidinone derivatives of pigment varieties have excellent migration resistance and excellent thermal stability, showing a pure blue-red or magenta color. The concentration of Pigment Yellow 139 does not affect the gloss, has excellent light resistance and weatherability; inorganic pigment to replace chrome yellow. It is suitable for high-grade paints (automobile refinishing paints), with light resistance up to grade 7-8. Pigment Red 185 is mainly used in high-grade automotive coatings (OEM), plastics and synthetic fibers for raw material coloring; in nitrocellulose (NC) solvent ink, excellent coloring power (beyond C.I. Pigment Yellow 17), high gloss. Can be used for coloring plastics, paints, printing inks and coatings. Organic pigments have bright colors and strong coloring power; low density and non-toxic. Organic pigments look looser, while inorganic pigments are heavier. Organic pigments are generally more aesthetically pleasing and have higher coloring power than inorganic pigments. 3. Whether organic pigments cause chronic toxicity, especially carcinogenicity, is of great concern. Many organic pigments are insoluble in water and cannot be changed by the human body, but they can be adsorbed. 4. Organic pigments have been widely used as colorants for plastic consumer products. Toys and food packaging materials colorants. 5. Therefore, the possible effects of some trace impurities in the production of organic pigments on the application of the above consumer products need to be considered in addition to the toxicological and ecological properties of the pure pigments and the properties transferred from the above materials.

Ⅰ. What color: Color is an optic nerve sensation when the human eye is stimulated by radiation of a certain wavelength and intensity. Although colors vary, there are only three basic colors: red, yellow and blue, often referred to as the three basic colors. Two equal primary colors are mixed to form secondary (intermediate) colors, which are equal to the primary colors to form composite colors. Pigments are usually determined by three parameters: hue, saturation and brightness, also known as the color triad. Monochromatic color without adding other colors as pure color, adding other colors as intermediate color or compound color. Two coated workpieces of the same color present different colors and colors under different light or sunlight. This is the essence of brightness with a certain hue and intensity, which is the difference in saturation. Ⅱ. the color formula. Generally speaking, this powder coating is mainly some inorganic pigments, pigment color durability is good, the cost is relatively low; in addition, inorganic coatings bright colors, high coloring power, high cost. Depending on the cost, the light resistance of the paint produced is also high, but the price will be expensive. The standard formula can be debugged according to the brightness of the color sample. Ⅲ.powder coating color mixing skills. Pigments used for powder coatings can be classified according to production method, composition structure, function and other methods. 1. Pigments are classified according to production methods. According to the production method, it can be divided into natural pigment and synthetic pigment. Powder coatings usually use less natural pigments. Synthetic pigments include titanium dioxide. Iron oxide series. Phthalocyanine series. Azo. Polycyclic pigments and so on. 2. Function distinction. According to the function of powder coating, it can be divided into color pigment. Physical pigment (also called filler). Antirust pigment. Conductive pigment, etc. For most functional powder coatings, the application of functional fillers is very important. 3. Hue in the process of powder coating color matching. Pigments used in powder coatings due to their chemical composition. Crystal structure. Surface state. Particle size. Different processes and equipment have different color tones, such as carbon black is a widely used pigment in powder coating. When the particle size decreases or the surface increases, the blackness of carbon black increases, absorbing more light and reflecting less, making it appear darker. It is important to know the hue of the powder coating. For example, if the hue is the same as the sample, set it to 10 (indicating that you are very satisfied and do not need to add any color material). Therefore, it is easier to go from zero to nine and harder to go from nine to ten. 4. Color sample magnificence. Inorganic pigments usually have good light retention and low cost, but the pigments are darker (i.e., not bright) and have low coloring power, while the opposite is true for organic pigments. Of course, some big companies have organic pigments with color fastness above grade 7 (lightfastness from grade 1-8, grade 8 is grade Z) and weatherability above grade 4 (weatherability from grade 1-5, grade 5 is grade Z), but the price is extremely expensive, so the price of pigments made of this powder is also very high. 5. According to the degree of color rendering. Due to the overall structure of the pigment. Chemical composition and form, its background color and presented to people are different. Carbon black is widely used in coating, usually as long as the particle size decreases, the carbon black increases, the light absorbs more and reflects less, so we will feel darker. At the end of the hue, there is no need for pigment, only the lack of hue. In addition, domestic and foreign pearlescent pigments have different degree of difference in color batch, and the production process of powder coating is difficult to control, so common customers are allowed to have a certain range of colors.

Pigment is an important and indispensable element in painting and decorative arts. According to their classification and characteristics, pigments can be divided into two categories: inorganic pigments and organic pigments. Inorganic pigments are made of natural minerals or synthetic inorganic substances. These pigments have strong stability and durability and are not easily affected by light, oxidation and chemical reaction. Common inorganic pigments include iron oxide yellow, titanium dioxide, graphite, limestone and so on. Iron oxide yellow is a yellow pigment with good covering power and durability, commonly used in oil and watercolor paintings. Titanium dioxide is a white pigment with very high covering power and gloss, commonly used in oil painting, watercolor painting and wall coating. Graphite is a black pigment with good conductivity and lubricity, often used in pencil lead and drawing. Limestone is a white pigment with good covering and adsorption properties, often used in murals and pastels. Organic pigments are pigments made from organic compounds. These pigments have rich colors and good transparency, but they are less stable and durable compared to inorganic pigments. Common organic pigments include phthalocyanine blue, azo yellow and phthalocyanine green. Phthalocyanine blue is a kind of blue pigment with bright color and good transparency, commonly used in oil painting and watercolor painting. Azo yellow is a yellow pigment with good covering power and stability, commonly used in oil painting, watercolor painting and printing. Phthalocyanine green is a kind of green pigment with bright color and good transparency, commonly used in oil painting, watercolor painting and plastic products. Besides the above two types of pigments, there is a special type of pigment, i.e. metallic pigment. Metallic pigments are pigments made of metal flakes or metal powder with unique metallic luster and reflectivity. Common metallic pigments are aluminum powder, copper powder, gold powder and so on. Aluminum powder is a silver-white pigment with good reflectivity and covering power, which is commonly used in oil painting, watercolor painting and decorative materials. Copper powder is a red pigment with good reflectivity and stability, commonly used in oil painting, watercolor painting and metal crafts. Gold powder is a kind of golden yellow pigment with unique luster and nobility, commonly used in decorative arts and metal crafts. The choice and application of pigments play a vital role in painting and decorative arts. Artists and designers need to choose suitable pigments according to the requirements and effects of their works. Inorganic pigments have better stability and durability and are suitable for works that are to be kept and displayed for a long time. Organic pigments, on the other hand, are rich in color and transparency and are suitable for delicate and soft effects. Metallic pigments, on the other hand, can give works a unique luster and texture. In short, the classification and characteristics of pigments are of great significance to painting and decorative arts. Inorganic pigments provide stability and durability, organic pigments provide rich color and transparency, and metallic pigments provide unique luster and reflectivity. Artists and designers need to choose the right pigments according to the requirements and effects of their works in order to achieve better artistic effects. The use of pigments is not just a simple application, but a kind of artistic expression and creation.

Organic pigments offer many advantages in the coloring of plastic products, but also face a number of challenges. Organic pigments are pigments made from organic compounds with complex molecular structures that offer a wide range of color options. The advantages and challenges of organic pigments in dyeing plastic products are described in detail below. First of all, one of the advantages of organic pigments in dyeing plastic products is the diversity of color options. Organic pigments can change color by adjusting the molecular structure, thus providing many color options to meet the needs of different customers. This diversity makes plastic products more competitive in the market and can attract more consumers' attention. Secondly, organic pigments have good light resistance and weather resistance in the dyeing of plastic products. The aromatic ring structure in the organic pigment molecule can absorb ultraviolet light, thus reducing the possibility of color fading and yellowing of plastic products. This lightfastness and weatherability allows plastic products to maintain long-lasting color stability in outdoor environments, extending their service life. In addition, organic pigments have good chemical resistance in the dyeing of plastic products. The bonds in the molecular structure of organic pigments are able to form strong chemical bonds with plastic molecules, thus improving the bonding force between the dye and the plastic. This chemical resistance makes plastic products less likely to fade or change color when exposed to chemicals, increasing their reliability in a variety of applications. However, organic pigments face some challenges in coloring plastics. The first is the relatively high price of organic pigments. Organic pigments are complicated to prepare and cost more to produce, making them more expensive. This increases the cost of organic pigments in the dyeing process and has an impact on the price of plastic products. Secondly, organic pigments require certain technical support in the dyeing process. The molecular structure of organic pigments is complex, and the dyeing process requires certain technical knowledge and experience. If not operated properly, it may lead to uneven color or unsatisfactory dyeing effect. Therefore, manufacturers need to have certain technical ability to ensure the quality and effect of the dyeing process. Finally, organic pigments also have certain environmental problems in the dyeing process. The preparation process of organic pigments may produce some harmful substances, which may cause some pollution to the environment. Therefore, manufacturers need to take appropriate environmental protection measures to reduce the impact on the environment. In summary, organic pigments have the advantages of versatility, light resistance, weatherability and chemical resistance in the dyeing of plastic products. However, their high price, technical requirements and environmental concerns are also challenges to be considered. Only by making full use of their advantages while addressing the corresponding challenges can organic pigments be better applied in dyeing plastic products to meet market demands and promote the development of the plastic products industry.

Organic pigments are pigments made of organic compounds whose color comes from the conjugated system or aromatic ring structure in the molecular structure. According to their different molecular structures, organic pigments can be divided into three categories: azo pigments, phthalocyanine pigments and aromatic pigments. 1. Azo pigment Azo pigment is one of the common organic pigments, which contains azo group (-N=N-) in its molecular structure. The color of azo pigment depends on the position of azo group, the type and number of substituents and other factors. The common azo pigments are yellow No.4 for orange color, red No.3 for red color, blue No.1 for blue color and so on. 2. Phthalocyanine pigment Phthalocyanine pigment is a kind of organic pigment containing phthalocyanine structure, which contains four pyrrole rings and one benzene ring in its molecular structure. The color of phthalocyanine pigment depends on the substituent group on the benzene ring and the type of metal ion on the pyrrole ring. Common phthalocyanine pigments include green copper phthalocyanine, blue cobalt phthalocyanine and so on. 3. Aromatic pigments Aromatic pigment is a kind of organic pigment which contains aromatic ring structure, and its molecular structure contains benzene ring, naphthalene ring, anthracene ring and so on. The color of aromatic pigment depends on the type and number of substituents on the aromatic ring. Common aromatic pigments include yellow aniline yellow, red red F3RK and so on. In conclusion, the structural classification of organic pigments mainly includes three categories: azo pigments, phthalocyanine pigments and aromatic pigments. Different organic pigments have differences in molecular structure, so their colors are different. Organic pigments have the advantages of bright color, light resistance, heat resistance, acid and alkali resistance, etc. They are widely used in ink, paint, plastic, rubber, textile and other fields.

Organic pigment red color is a very special pigment that can glow with magic and surprise and amaze people endlessly. Organic pigments in the red color family are very old pigments that have been widely used in ancient times and are also widely used in modern times. Red organic pigments have a very strong color saturation and brightness, which makes people feel very comfortable and happy. There are many types of red organic pigments, the most common of which is red, which has a very strong visual impact. There are many other types of red organic pigments, such as orange, yellow, purple and so on, and each color has different characteristics and charms. Red organic pigments are widely used in the field of art to make paintings more vivid, sharp and powerful. In painting, red organic pigments can be used to depict the faces of people, clothes, flowers and so on, which can make the paintings more vivid, interesting and colorful. In the field of design, red organic pigments are also widely used to create attractive logos, posters, advertisements, etc., which create a strong interest in the product or service. There are many other applications for red pigments, such as in textiles, plastics, cosmetics, food and more. In textiles, red organic pigments can be used to color clothes, making them more vibrant, beautiful and fashionable. In plastics, red organic pigments can be used to create beautiful toys, stationery, home furnishings, etc., which can make people feel very happy and satisfied. In cosmetics, red organic pigments can be used to create beautiful lipsticks, nail polishes, eye shadows and so on, making women more beautiful, confident and attractive. In food, red organic pigments can be used to create beautiful candies, cookies, chocolates and so on, which can make people feel very happy and satisfied. In short, red organic pigments are a very magical and fascinating pigment that can bring a very strong visual impact and sensory experience to people. Red organic pigments have a wide range of applications in the fields of art, design, textiles, plastics, cosmetics, food and so on, which can make people feel very happy and satisfied.

Organic pigment is a kind of pigment commonly used in a variety of color products in a wide range of applications, including coatings, inks, plastics, rubber, textiles and other fields. 1. Coatings Organic pigments are widely used in the field of coatings, which can be used in indoor and outdoor wall coatings, wood coatings, metal coatings, automobile coatings and so on. When choosing organic pigments, it is necessary to consider its light resistance, weather resistance, chemical resistance, color stability and other factors. 2. Ink field Organic pigments also have a wide range of applications in the field of inks, which can be used in printing inks, photographic inks, offset inks, etc. When selecting organic pigments, it is necessary to consider its light resistance, weather resistance, chemical resistance, color stability and other factors. When choosing organic pigments, it is necessary to consider its color brightness, fluidity, drying speed, viscosity and other factors. 3. Plastics Organic pigments are widely used in the field of plastics, and can be used for coloring various plastic products, such as plastic films, plastic containers, plastic pipes, etc. When choosing organic pigments, it is necessary to consider its color brightness, fluidity, drying speed, viscosity and other factors. When choosing organic pigments, it is necessary to consider its heat resistance, light resistance, chemical resistance, color stability and other factors. 4. Rubber field Organic pigments also have a wide range of applications in the rubber field, and can be used for coloring various rubber products, such as tires, seals, rubber hoses and so on. When choosing organic pigments, it is necessary to consider its heat resistance, light resistance, chemical resistance, color stability and other factors. 5. Textile field Organic pigments are widely used in the field of textiles, can be used for a variety of textile coloring, such as cotton, hemp, silk, wool and other fibers dyeing. When choosing organic pigments, it is necessary to consider its color brightness, washing resistance, light resistance, friction resistance and other factors. Selection Guide: When selecting organic pigments, the following factors need to be considered: 1. color vividness: the color vividness of organic pigment is one of its z basic performance, need to choose the right color according to the specific use requirements and needs. 2. light resistance: the light resistance of organic pigments is the ability of its color stability after exposure to sunlight, according to the specific use of the environment to choose the right pigment. 3. chemical resistance: the chemical resistance of organic pigment is the ability of its color stability after contacting with chemical substances, and it is necessary to choose the right pigment according to the specific use environment. 4. heat resistance: the heat resistance of organic pigment is the ability of its color stability in high temperature environment, according to the specific use of the environment to choose the right pigment. 5. solubility: the solubility of organic pigments is its ability to dissolve in solvents, and it is necessary to choose the right pigment according to the specific requirements and needs of use. In short, the application range of organic pigments is very wide, and it is necessary to choose the right pigment according to the specific requirements and needs of use. When choosing organic pigments, it is necessary to consider its color brightness, light resistance, chemical resistance, heat resistance, solubility and other factors.

Organic pigment red color is a very special pigment that can glow with magic and surprise and amaze people endlessly. Organic pigments in the red color family are very old pigments that have been widely used in ancient times and are also widely used in modern times. Red organic pigments have a very strong color saturation and brightness, which makes people feel very comfortable and happy. There are many types of red organic pigments, the most common of which is red, which has a very strong visual impact. There are many other types of red organic pigments, such as orange, yellow, purple and so on, and each color has different characteristics and charms. Red organic pigments are widely used in the field of art to make paintings more vivid, sharp and powerful. In painting, red organic pigments can be used to depict the faces of people, clothes, flowers and so on, which can make the paintings more vivid, interesting and colorful. In the field of design, red organic pigments are also widely used to create attractive logos, posters, advertisements, etc., which create a strong interest in the product or service. There are many other applications for red pigments, such as in textiles, plastics, cosmetics, food and more. In textiles, red organic pigments can be used to color clothes, making them more vibrant, beautiful and fashionable. In plastics, red organic pigments can be used to create beautiful toys, stationery, home furnishings, etc., which can make people feel very happy and satisfied. In cosmetics, red organic pigments can be used to create beautiful lipsticks, nail polishes, eye shadows and so on, making women more beautiful, confident and attractive. In food, red organic pigments can be used to create beautiful candies, cookies, chocolates and so on, which can make people feel very happy and satisfied. In short, red organic pigments are a very magical and fascinating pigment that can bring a very strong visual impact and sensory experience to people. Red organic pigments have a wide range of applications in the fields of art, design, textiles, plastics, cosmetics, food and so on, which can make people feel very happy and satisfied.

Organic pigment is a kind of pigment made of organic compounds with good color brightness, color stability and light resistance. Organic pigments are commonly used in inks, coatings, plastics, textiles, cosmetics and other fields. Below Lonco will introduce the applications of organic pigments and their advantages. 1.Ink Organic pigments are very common in the ink field, and can be used for printing, photography, copying and many other purposes. The advantages of organic pigments lie in their high color vibrancy, good color stability, strong light resistance, etc., which can meet the printing needs of different colors and color requirements. At the same time, organic pigments can also be compatible with different resins, solvents and additives, and can be adapted to different printing materials and printing methods. 2. the field of coatings The application of organic pigments in the field of coatings is also very common, and can be used for indoor and outdoor wall coatings, wood coatings, metal coatings and other coatings. The advantages of organic pigments lie in their high color brightness, good color stability, strong light resistance, etc., which can meet the needs of coatings with different colors and color requirements. At the same time, organic pigments are also compatible with different resins, solvents and additives, and can be adapted to different coating materials and coating methods. 3.Plastics The application of organic pigments in the field of plastics is also very common, and can be used for coloring and dyeing of various plastic products. The advantages of organic pigments lie in their high color brightness, good color stability, strong light resistance, etc., which can meet the needs of different colors and color requirements of plastic products. At the same time, organic pigments can also be compatible with different plastic resins, which can be adapted to different plastic products and plastic processing methods. 4. the textile field The application of organic pigments in the textile field is also very common, can be used for a variety of textile dyeing and printing. The advantages of organic pigments lie in their high color brightness, good color stability, strong light resistance and other characteristics, which can meet the needs of different colors and color requirements of textiles. At the same time, organic pigments can also be compatible with different textile materials, can be adapted to different textiles and textile processing methods. 5. Cosmetic field The application of organic pigments in the field of cosmetics is also very common, and can be used for coloring and dyeing lipsticks, eye shadows, nail polish and many other cosmetics. The advantages of organic pigments lie in their high color vibrancy, good color stability, strong light resistance and other characteristics, which can meet the needs of different colors and color requirements of cosmetics. At the same time, organic pigments can also be compatible with different cosmetic ingredients and can be adapted to different types of cosmetics and ways of use. In conclusion, organic pigments have the advantages of high color vibrancy, good color stability, strong light resistance, etc., and are commonly used in the fields of inks, coatings, plastics, textiles, cosmetics and so on. With the continuous progress of science and technology and people's increasing demand for environmental protection, the application prospects of organic pigments will be even broader.

Organic pigments are pigments made of organic compounds with good light resistance, heat resistance, weather resistance and chemical stability, which are commonly used in coatings, inks, plastics, rubber and other fields. In coatings, the application of organic pigments is mainly to increase the color and decorative effect of the coating, as well as to improve the weather resistance and light resistance of the coating. The main applications of organic pigments in coatings are as follows: 1. Color adjustment Organic pigments can be used to adjust the color and hue of the coating, so that the coating has more vivid and bright colors. In coatings, organic pigments have better color stability, are not easy to fade, and can maintain the color freshness of the coating for a long time. 2. Decorative effect Organic pigments can be used to increase the decorative effect of the coating, so that the coating has a richer and more varied surface effects. For example, metallic pigment can make the coating have metallic luster and texture, pearlescent pigment can make the coating have pearlescent effect, transparent pigment can make the coating have transparent effect and so on. 3. Weather resistance and light resistance Organic pigments can be used to improve the weather resistance and light resistance of the coating, so that the coating has a longer service life. In coatings, organic pigments have better light resistance and weather resistance, which can effectively prevent the coating from discoloration and fading due to prolonged exposure to the external environment. 4. Regulating the rheological properties of coatings Organic pigments can be used to regulate the rheological properties of coatings, so that the coatings have better coatability and fluidity. In coatings, organic pigments can be used as rheological agents, which can effectively improve the rheological properties of coatings, so that the coatings have better coatability and fluidity. In conclusion, organic pigments are widely used in coatings to provide rich colors and decorative effects, as well as to improve the weathering and light resistance of coatings. With the continuous progress of science and technology and the continuous innovation of coating technology, the application of organic pigments in coatings will have a broader future.

Polyester / hemp fabric dyeing of the traditional process are generally taken two baths and two-step dyeing method, that is, the first disperse dyes dyeing polyester, reduction cleaning with reactive dyes after dyeing hemp. Using two-bath two-step dyeing process, the production cycle is long, low efficiency and high consumption. Due to the two baths, the production process produces a large amount of wastewater, increasing the burden of sewage treatment, seriously affecting the economic efficiency of enterprises. Now through the screening of dyes, auxiliaries and the selection of dyeing and finishing process conditions, polyester/hemp fabrics dispersed/active one-bath thermosoluble thermosetting dyeing processing to achieve better dyeing results. Using citric acid as a non-ironing finishing agent, analyzed the citric acid concentration, catalyst, additives, finishing process conditions, etc. on the finishing effect of colored cotton fabrics (elastic recovery, elasticity enhancement rate; breaking strength, strength reduction rate; color difference, etc.), through orthogonal tests and analysis to obtain the optimal process conditions for the wrinkle-resistant finishing of natural colored cotton as follows: citric acid 9% (on the weight of the fabric), mixed catalyst 10% (on the weight of the fabric), amine triacetate 5% (on the weight of the fabric), amine triacetate 10% (on the weight of the fabric), amine triacetate 10% (on the weight of the fabric), amine triacetate 10% (on the weight of the fabric). Amine triacetate 5% (for fabric weight), baking temperature 160 ℃, baking time 150 s. The test shows that: after citric acid wrinkle finishing, the wrinkle-resistant performance of natural colored cotton has been improved to a greater extent, instead of the traditional hydroxymethyl wrinkle finishing agent, no formaldehyde exists on the fabric after finishing.

Industry Development Trend China is the world's largest producer and consumer of dyestuffs, but the proportion of product structure is still dominated by low-end products. Product homogenization among manufacturers of conventional varieties is relatively serious and lacks characteristics, and the production capacity of some products is growing too fast, resulting in overcapacity. In the future development of the dyestuff and dyestuff intermediates industry, the integration and automation of the production mode, industrial upgrading and green environmental protection will become important development trends of the industry. (1) Modernization and upgrading of production equipment. At present, domestic dyestuff production has undergone technological transformation and process technology has been improved, but most of them are still rough, open, intermittent and labor-intensive operation modes, with poor emergency response capability in environmental protection and safety. The reaction control is not precise enough, resulting in unstable product quality and the yield is difficult to meet the requirements. Firstly, the raw material is wasted, secondly, the reaction products and isomers, and thirdly, it puts pressure on the subsequent waste treatment, increases the production cost, and is not competitive in the international market. Integration and automation, modernization and upgrading of production equipment will help improve the current situation. 2 . R&D of high-end products and expansion of application scope. In the future, the ecological safety of products will be the key to improve the core competitiveness of dyestuff enterprises. The creation and industrialization of new dyestuff products is the cornerstone of future development of enterprises. Strengthening the research and innovation of high-end products will support the whole industry to move towards the high-end, specifically including reactive dyes, acid dyes and organic pigments with high solubility and high strength; disperse dyes, reactive dyes, acid dyes and organic pigments required for dyeing and finishing processes of ultrafine fibers, high imitation cotton fibers, multi-functional composite fibers, PLA fibers, bamboo fibers, polyester fibers, nylon fibers, wool and other fibers. (3) Green development is a feature of future industrial development. At present, China's dyestuff industry has shifted from the development of fixed asset investment and capacity expansion to the relatively flat capacity and technology-oriented development of new normal, environmental protection, quality and efficiency. The dyestuffs industry has made great progress in energy conservation, emission reduction and clean production. On the one hand, great progress has been made in the promotion and demonstration of clean technologies. Clean production preparation technologies such as hydrogenation reduction of dyestuffs and pigment intermediates, membrane filtration of dyestuffs, dry cleaning production of raw pulp, and substitution of organic solvents for aqueous media have been widely applied. On the other hand, the popularization and application of comprehensive utilization and recycling technologies have reduced the generation of "three wastes"; finally, environmental protection investment has been increased, and advanced equipment and technologies have been adopted for the extraction and counter-extraction of high-concentration, difficult-to-degrade wastewater generated during the synthesis process, as well as the harmless treatment of wastewater.

Abstract: With the rapid development of nanotechnology, the excellent performance of nanomaterials has been gradually applied to the coating industry, this paper mainly introduces the main application status of nano-coatings at home and abroad, as well as the important and difficult problems in the process of nano-modified coatings research and the current solutions, to share some examples of nano-materials in the research of corrosion-resistant coatings. At present, the development of nano-coatings in China is still relatively backward compared with developed countries, which needs to be explored in depth by researchers. Paint coating anti-corrosion technology has long played a very important role in the national economy as a simple and convenient anti-corrosion method. As nanotechnology began to penetrate into various fields, the application of nanomaterials in coating research has been increasingly emphasized. The surface effect, volume effect, quantum size effect and macroscopic quantum tunneling effect of nanoparticles are utilized to improve various aspects of coatings, enhance their hardness and oxidation resistance, and make them photocatalytic, antimicrobial, electromagnetic wave absorbing, heterochromatic with angle, and affinity to water and oil. Many enterprises and research institutions at home and abroad have done a lot of work on nano-modified coatings and achieved promising results. This paper discusses the important and difficult problems in the research process of nano-modified coatings and the current solutions, and focuses on the research examples of nano-materials in anti-corrosion coatings, with a view to providing some references for the related research on the combination of nanotechnology and coatings. 1 Foreign nanocoatings research, application status The application of nanomaterials mainly includes two aspects: one is to add nanomaterials to some traditional materials to further improve the performance of traditional materials; The second is to make nano-materials into nano-solid materials through molding process. Currently, the first technology is more common and mature. Nanophase Technologies mixes its own nanomaterial product, NanoTek alumina, with clear varnish to produce a clear coating that is 24 times more abrasion resistant than traditional coatings. SDC Coatings directly nanosized SiO2 and nano-metal oxide sol for wear-resistant transparent coatings SILVUE series of products, can be anti-ultraviolet, anti-fogging, has been successfully used in automobiles, airplanes, buildings, etc., glass windows and other transparency and abrasion-resistant requirements of the high, environmentally demanding places. Another successful example of foreign use of inorganic nanomaterials in coatings is limousine top coat. The nano TiO2 is mixed with aluminum powder pigment or mica pearlescent pigment and added into the paint, and its coating has heterochromaticity with angle, which increases the fullness of the metal color and the perspective flash color. In addition, nanoparticles have strong absorption of ultraviolet rays, such as the addition of TiO2, SiO2 and other nanoparticles in exterior architectural coatings can improve the weathering resistance of coatings. Nano ZnO is a good photocatalyst, under the irradiation of ultraviolet light, it can decompose organic substances and play the role of antibacterial and deodorization. Foreign countries also use nanometer ultrafine powder size is very small, the different wavelengths of radar waves and infrared radiation has a super absorption effect of the characteristics of the nanoscale carbonyl iron powder, nickel powder, ferrite powder successfully formulated military stealth coatings. Coating to aircraft, warships, missiles, submarines and other weapons and equipment, so that it has stealth performance, is expected to be in the future military stealth in a big way. Some of the semiconductor characteristics of the nanoparticles of oxides, at room temperature than conventional oxides have high conductive properties, Japan's Panasonic has developed a good electrostatic shielding nanocomposite coatings, the use of nanoparticles FeO, TiO2, ZnO and so on. 2 Domestic research and application of nano-coatings Most of the domestic research and development of nano-coatings have just started, mainly focusing on improving the weather resistance of architectural exterior coatings and antibacterial properties of interior coatings, while the research and development and industrialization of industrial coatings, aerospace coatings and functional coatings lag behind the developed countries. China's first generation of nano-titanium coatings were successfully developed in Harbin, which is used in the anti-corrosion coating of steel for marine use, and can guarantee ten years of excellent anti-corrosion effect. In recent years, some researchers have begun to deeper quantitative research on the specific role of nanoparticles in improving the performance of coatings, including the optimization principle, nanoparticle particle size, adding ratio and so on. Zhang Xiuzhi et al. of the Institute of Metals, Chinese Academy of Sciences, for the corrosion and fouling in the marine environment, conducted research on nano-modified epoxy coal tar pitch coatings. Using the physical method of grinding combined with the chemical method of adding surface modifiers in the epoxy coal tar pitch 0%, 5%, 10%, 20% titanium nanopowder, titanium nanopowder to study the corrosion resistance of epoxy coal tar pitch coating. The results show that the coating containing 10% (by weight) of titanium nanopowder has the best protective performance. Zeng Zhen-Ou et al. from South China University of Technology prepared nano TiO2 coatings on the surface of 304 stainless steel and mild steel, and then added SnO2 to prepare nano TiO2-SnO2 composite coatings and stacked coatings, and found that nano TiO2-SnO2/TiO2 coatings had better photocathodic protection and corrosion protection for mild steel than nano TiO2 coatings. Tian Huiwen et al. from Institute of Oceanography, Chinese Academy of Sciences used electrochemical impedance spectroscopy (EIS) to study the corrosion pattern of nano-Si02 modified epoxy coatings in 3.5% NaCl (mass fraction) aqueous solution, and found that the addition of nano-Si02 can significantly improve the corrosion protection performance of the coatings, and the best corrosion protection performance was achieved when the mass fraction added was 2%. Beijing University of Chemical Technology, Xie Shuangying et al. will be nano-TiO2 to mechanical stirring way to add to the epoxy zinc-rich coatings, the preparation of nano-TiO2 modified epoxy zinc-rich coatings, found that the surface of weathering steel coated with nano-TiO2 modified epoxy zinc-rich coatings, its self-corrosion current is reduced, and the degree of surface corrosion is reduced. Zhejiang University proposed a surface in-situ nano-modification preparation method for nano-coatings and prepared high-performance nano-coatings. Xiamen University and Xiamen Daping Industry and Trade Co., Ltd. research and development of tunnel fireproof coating, the preparation of key technologies and functional surface treatment of nano-coatings project, applied for two national invention patents. Some coating enterprises in China have also made contributions to the development of nano-coatings, Changchun New Century Nanotechnology Research Institute, Century Nanotechnology Co. This has played a good role in promoting the technological progress of nano-coatings and the expansion of application fields in China.

China International Coatings Show (CICC) 2023, to be held on November 15-17, 2023 at Shanghai New International Expo Center (SNIEC), has been committed to providing an international exhibition and trade platform for suppliers and manufacturers in the coatings industry. The show has always been committed to providing an international exhibition and trade platform for suppliers and manufacturers in the coatings industry to meet the global audience, especially from China and Asia. The show has always been committed to providing an international exhibition and trade platform for suppliers and manufacturers in the coatings industry to reach out to the global audience, especially from China and Asia. Shanghai Coatings Exhibition exhibitors from many countries and regions around the world, when many well-known brands appear, show cutting-edge products and technologies and innovative solutions, China Coatings Exhibition is a platform for enterprises to develop the coatings market, to the coatings industry as the theme of the exchange, purchasing conference, Coatings Exhibition will lead the Shanghai Coatings Industry continue to breakthrough and upgrade.

At the 14th Cross-Strait Textile Industry Cooperation Seminar, 48 textile business leaders from both sides of the Taiwan Strait gathered to discuss the future development of the textile industry, and Shih-Ping Chuang, Chairman of Fu Ying Technology & Chemicals Co., Ltd. was also invited to attend this meeting as a leader in green textile chemical industry. This symposium, held every two years, has been committed to promoting cross-strait exchanges and cooperation in the textile industry since 1992. The theme of this conference focuses on "Cross-Strait Textile Industry Development Status and Trend Prospects", covering "Innovative Development of Smart Textiles", "Opportunities and Value Creation of Green Industry Chain The conference covered a number of special reports such as "Innovative Development of Smart Textiles", "Opportunities and Value Creation of Green Industry Chain", "Synergizing Climate Innovation and Promoting Industrial Recycling Development", "Green Textile Technology Innovation and Development", etc., which provided a platform for the participants to have an in-depth understanding of the sustainable development of the textile industry.

Recently, Chinese researchers proposed a novel strategy for the total dispersion of surface heterogeneous nanostructured particles to prepare fully dispersed hydrophilic-hydrophobic heterogeneous microspheres, which demonstrated excellent performance of total dispersion in a range of solvents (water, ethanol, octane, etc.) and enabled the recovery of organic dyes from wastewater.

The Color Solutions business segment within Vibrantz Technologies announces its 2023 color of the year. The segment`s color science and commercial teams have chosen [Approaching Dawn," a violet hue ideal for subtle accents or bold statements in architectural and industrial paints and coatings applications. Vibrantz`s Color Solutions team releases a global color of the year each winter as part of their ongoing work to promote and meet future customer demand by identifying and staying ahead of market trends and encouraging broader and varied use of color in paints, coatings and thermoset plastics markets. [`Approaching Dawn` is a vibrant violet hue that imparts a sense of hope and inspiration," said Alex Capuz, global marketing manager for the Color Solutions segment at Vibrantz. [As a leading global colorants supplier, we aim to predict color trends for the markets we serve," added Capuz. Capuz added that Vibrantz will release complementary regional palettes in January 2023.

Written by David Wawer, Executive Director, CPMA A recent surge in announcements by a variety of researchers show the discovery of alternative, non-traditional methods to producing pigments. Some of the claims are that these new pigments are [greener" than their traditional counterparts. These claims are both exciting and intriguing. A recent article in GreenBiz described the Biomimicry Institute`s Ray of Hope Prize to Swiss company, Impossible Materials, for research on natural substitutes for Titanium Dioxide (TiO2)[1]. The article stated [A Switzerland-based company Impossible Materials looked to the brilliantly white Cyphochilus Beetle for the inspiration for an alternative. They found that its body has structures that diffuse light waves, making it completely white. The company`s design team created a similar structure out of cellulose waste that produces a white pigment and, according to Yarnall-Schane, creates a brighter white than titanium dioxide and will also be cheaper at scale." The article neglects, however, to accurately differentiate between a dye and pigment. In using the two words interchangeably, the authors fail to recognize that pigments and dyes chemistries are not the same. TiO2 is commonly known by industry experts as [white pigment" and is not a dye. The company research project references TiO2 as [white dye". Pigments industry experts define dyes as [soluble" chemistry, and pigments as [insoluble" chemistry. The Color Pigments Manufacturers Association (CPMA) is the acknowledged resource for regulatory, technical, and scientific information about the color pigments value chain and color pigments chemistry. CPMA representatives provide information to industry trade publications, state and national governments officials, downstream customer industries, and others. Public inquiries about color pigments science and technology have included inquiries from academic institutions conducting research on innovation for pigments products. CPMA is encouraged to read about innovation by companies such as Impossible Materials to develop new pigments chemistry. Unfortunately, the road from innovation to commercialization contains significant obstacles, one of which is the regulatory approval process. The newest commercially available color pigment – YInMn Blue – took five years and thousands of dollars to obtain government regulatory approvals. On a global scale, the approval process must be navigated on a country-by-country basis. In the USA, new chemicals approval processes were made more difficult, if not impossible, after the Lautenberg Chemical Safety for the 21st Century Act was enacted into law in 2016. CPMA`s expertise on the color pigments industry value chain (which includes TiO2 as a raw material) can be an asset for academic researchers and organizations with discoveries and inventions for which commercially viable applications are being pondered. While announcements and research projects supported by entities such as the Biomimicry Institute are unique, novel, and exciting, replacements for TiO2 and other pigments in commerce will not enjoy immediate commercial success. Significant regulatory approval and commercial viability hurdles must be overcome. [1] Klein, J. (2022). How three companies are solving problems using biomimicry | Greenbiz. Retrieved 31 May 2022, from https://www.greenbiz.com/article/how-three-companies-are-solving-problems-using-biomimicry?utm_medium=email&utm_source=newsletter&utm_campaign=newsletter-template&utm_content=05-25-2022%20Climate%20Tech%20Weekly&mkt_tok=MjExLU5KWS0xNjUAAAGEmhCfr632S6xBriTz2baESnyVk6H493ynMqM1N-jHenPKJs4Ofke3p_hUvdmbArg2xtQ_w7O6p6PG7kuY1qpMbUPGOmFGUK0LCacKLMVN0mOI6A