Latest News and Updates on Textile Auxiliaries and Dyes

El colorante índigo es una tintura de color azul (ver índigo). El compuesto químico constituyente del índigo es la indigotina.En la antigüedad el colorante natural índigo se extraía de diversas especies de plantas, como también de especies animales como el caracol Hexaplex trunculus, pero actualment Read More

Vietnam’s "People’s Daily" reported on January 5 that, according to Viet News Agency’s report, the Import and Export Bureau of the Ministry of Industry and Trade of Vietnam disclosed that according to the Ministry’s No. 9 Notice, starting from January 1, 2021, the And re-export trade, if it is impor Read More

There are many varieties of optical brightener agents, and there are certain brands of whitening agents for the whitening of various fibers.Although the chemical structure and properties of various brighteners are different, the principle of brightening fibers or fabrics is the same. The principle o Read More

Four properties of disperse dye leveling agentDisperse dyes are non-ionic dyes with low water solubility. Generally, high temperature and high pressure are used for dyeing. In order to achieve uniform dispersion and dyeing, leveling agents are generally used in the dyeing process. Today, I will talk Read More

1 Sampling and pretreatment The key steps to identify the types of dyes on cellulose fibers are sampling and sample pretreatment. When taking the sample, the part of the same dye should be taken. If the sample contains several shades, each shade should be taken. If fiber identification is required, Read More

With the high-grade of human polyester textile fabrics, especially the growth of sports fabrics and outdoor fabrics, the washing fastness of conventional disperse dyes is poor, especially the poor thermal migration during heat setting after processing, making high washing fastness disperse dyes ha Read More

Basic principles of disperse dyeing1. Dyeing performance of polyester fiberPolyester is a hydrophobic fiber. The fiber lacks groups that can bind to dyes. It cannot be dyed with water-soluble dyes. It can only be dyed with non-ionic disperse dyes with low molecular weight, no strong ionic water-solu Read More

Basic knowledge of disperse dyes (2)1. What is hot melt pad dyeing?The hot melt pad dyeing process is suitable for continuous dyeing of polyester/cotton blended fabrics. Its dyeing principle is also a kind of high temperature dyeing. The difference from high temperature and high pressure is that the Read More

Basic knowledge of disperse dyes (1)Disperse dyes were produced by the Baden Aniline Soda Company in Germany in 1922 and are mainly used for dyeing polyester fibers and acetate fibers. At that time, it was mainly used for dyeing acetate fibers. After the 1950s, with the emergence of polyester fiber, Read More

The dyeing performance of disperse dyes-lifting power1. Definition of lifting power:Lifting power is one of the important properties of disperse dyes. This characteristic indicates that when each dye is used in dyeing or printing, the amount of dye is gradually increased, and the degree of color dep Read More

Basic dyeing with disperse dyesDyeing polyester with disperse dyes is generally carried out under acidic conditions.So, what are the advantages and disadvantages of dyeing with disperse dyes under alkaline conditions? Please look down.1. The emergence of alkaline dyeing with disperse dyes:When dyein Read More

The dyeing principle and process of reactive dyesThe dyeing principle and process of reactive dyes. The molecule contains chemically active groups that can react with cotton, wool and other fibers in an aqueous solution to form a co-bonded dye. Has high washing fastness. Reactive dyes are composed o Read More