Latest News and Updates on Textile Auxiliaries and Dyes

The thermal migration of disperse dyes is not the redistribution of dyes in the two phases of fiber and surface solvent under dry heat conditions, but its inherent physical characteristics, which also cause the color fastness and shade variation of polyester-containing fabrics to decrease during dry Read More

Hand visual inspection method: This method is suitable for textile raw materials in the state of loose fibers. (1) Cotton fiber is shorter and thinner than ramie fiber and other hemp fiber and wool fiber, and it is often accompanied by various impurities and defects.(2) The hemp fiber feels rough an Read More

What are fluorescent dyes?Fluorescent dyes are substances that absorb light waves of a certain wavelength and emit light waves with a wavelength greater than that of the absorbed light. Most of them are compounds containing benzene ring or heterocyclic ring and with conjugated double bond. Fluoresce Read More

Wood dyeing technology makes wood easy to peelThe wood dyeing technology is called wood dyeing technology by combining with dyes physically or chemically to obtain a firm color. Ordinary or low-quality wood is processed through techniques such as dyeing and simulating wood grain, which can eliminate Read More

Disperse dyeing is mainly used for polyester fiber dyeing at high temperature and high pressure. Although the disperse dye molecules are small, it is not guaranteed that all the dye molecules enter the fiber during dyeing. Some disperse dyes will adhere to the fiber surface, resulting in poor fastne Read More

What is Insect repellent and its application? Insect repellent is a new functional finishing agent for fabrics. The main ingredient is nano-scale microcapsules mainly composed of pyrethroid compounds. It forms an insect-proof film on the surface of the fabric through a fixing agent, which protects a Read More

What are disperse dyes and what solvents are used for disperse dyes?What are disperse dyes? What solvents are used for disperse dyes? Disperse dyes have relatively small molecules and do not contain water-soluble groups in structure. They are uniformly dispersed in the dyeing liquor by means of disp Read More

Estudio de la influencia del pH en una tintura de poliéster 100% con colorantes dispersos, usando ácidos orgánicos para el baño de tintura. Para lo cual, se establecieron los tonos patrón en base a información del sistema Pantone TCX, para el gris, beige y habano. Las concentraciones iniciales de cada colorante amarillo, azul y rubine, para estos tonos se midieron en el espectrofotómetro. Se prepararon las soluciones con los colorantes y tres baños con los auxiliares y ácido cítrico a diferentes concentraciones para obtener los pH 4; 4,5 y 5; se realiza el mismo procedimiento con ácido fórmico. La tela es sometida a un lavado previo para eliminar impurezas. El tinturado a nivel de laboratorio se desarrolló a 130 °C durante 45 minutos, obteniendo varias gamas de color; el proceso se repite tres veces para realizar las comparaciones respectivas con el estándar. Los resultados estadísticos permiten concluir que el pH adecuado para el proceso de tinturado de poliéster 100% con colorantes d Read More

In terms of printing and dyeing, the market value of China's dyeing and finishing industry has increased from approximately 374.6 billion yuan in 2014 to approximately 435.6 billion yuan in 2019, with a compound annual growth rate of approximately 3.1%. The decline in China's printing and dyeing fab Read More

What is the difference between pigment printing and reactive dye printing? What are their advantagesWhat is the difference between pigment printing and reactive dye printing? What are their advantages? The so-called printing is the process of making dyes or paints into color pastes and partially app Read More

1. Classified by chemical structureDivided into: azo dyes, anthraquinone dyes, arylmethane dyes, indigo dyes, sulfur dyes, phthalocyanine dyes, nitro and nitroso dyes, in addition to other structural types of dyes, such as methyl and polymethine dyes , Stilbene dyes and various heterocyclic dyes, et Read More

1. Direct dyes Structural properties: Direct dyes are a kind of water-soluble anionic dyes. Most of the dye molecules contain sulfonic acid groups, and some have carboxyl groups. The dye molecules and cellulose molecules are combined by van der Waals forces and hydrogen bonds. Dyeing objects and met Read More