Latest News and Updates on Textile Auxiliaries and Dyes

Keywords：Disperse dyeTextile dyesDyeingDisperse dye definitionDisperse dyes are a type of dye with smaller molecules (molecular weight 200-500) and relatively simple structure. It does not contain strong hydrophilic groups such as sulfonic acid group so3- and carboxyl COOH. It only contains some wea Read More

Introduction:Dyes play a crucial role in the world of textiles, providing color to fabrics and enhancing the aesthetic appeal of various products. Two primary categories of dyes, organic and conventional, exhibit distinct characteristics and production processes. Understanding the disparities betwee Read More

Disperse dyes are a type of dye with smaller molecules (molecular weight 200-500) and relatively simple structure. It does not contain strong hydrophilic groups such as sulfonic acid group so3- and carboxyl COOH. It only contains some weak polar groups such as carboxyl groups, amino groups, and nitro groups, and is a non-ionic dye with very low water activity. Read More

Printing paste color pulp refers to the mixing ratio of different proportion of dye water with printed paste (when adding printed color pulp, generally dissolved in water or fully bloated and dispersed in water). Purch. PolychismDyes or pigments (coatings)Additives (fixing agent, hygroscopic agent, Read More

Vat dyes are insoluble in water and cannot be used to dye fabrics directly. When dyeing, it is necessary to use insurance powder in an alkaline solution to reduce the leuco body to a water-soluble leuco body, so that it can be adsorbed by the fiber, and then oxidized and developed by air, etc., to convert the leuco body into the original dye and dye it on the fiber. Read More

Fluorescent whitening agent is a fluorescent dye, or a white dye, which is also a collective name for a type of compound. Its characteristics are to stimulate the radiation of the incident light to generate fluorescence, so that the infected matter can obtain the glittering effect of fluorite -like fluorite, making the substances seen by the naked eye very white. Read More

Nowadays, the importance of digital printing is constantly gaining prominence. The growth of multi color inkjet technology is especially growing in the home and office application. A substantial and thriving consumer market for inkjet can be noticed in packaging, publication, and specialty areas. Read More

Reactive dyes are a type of dye that react chemically with fibers during dyeing. This type of dye molecules contains groups that can chemically react with fibers. During dyeing, the dyes react with the fibers and form a covalent bond between the two to form a whole, which improves the washing and rubbing fastness. Reactive dyes are a new type of dye. In 1956, the UK first produced the Procion brand of reactive dyes. Reactive dye molecules include two main components: parent dye and reactive group. The group that can react with fiber is called reactive group. Read More

The degree of alkali reduction treatment is generally expressed by the reduction rate. 1. Type and concentration of alkali agent The ability of organic bases to hydrolyze ester bonds is less than that of inorganic bases, but it does great damage to fiber strength. Inorganic base: KOH>NaOH>sodium carbonate As the concentration increases, the reduction rate increases The larger the specific surface area of the fiber, the greater the weight loss rate. Read More

Direct dyes are dyes that can be heated and boiled in neutral and weakly alkaline media without the help of mordants. Direct dyes are formed by combining hydrogen bonds and van der Waals forces between direct dyes and cotton fibers. It is mainly used in fiber, silk, cotton spinning, leather and other industries, and is also used in papermaking and other industries. Direct dyes can be divided into azo, stilbene and other types according to their structure. According to their application classification, they mainly include ordinary direct dyes, direct lightfast dyes and direct azo dyes. Read More

In the textile industry, different fabrics are dyed with different dyes. Cotton, one of the most common fabrics, is the best choice for dyeing because of its high water absorbency. The purpose of this article is to introduce the selection and process of cotton dyeing, and to answer questions that are widely used in daily life and in the textile industry. Read More

When using acid dyes for dyeing, you often encounter problems such as color flowers, discoloration, yellowish light, and insufficient level dyeing. In addition to poor quality of dyes, improper process operation or failure to handle details are also among the reasons for these problems. Therefore, taking acid dye dyeing of nylon as an example, we will discuss the dyeing process of acid dyes and the issues that should be paid attention to during production. Read More