2021-08-09

What are reactive dyes and their advantages and disadvantagesReactive dyes are a new type of water-soluble dyes that appeared in the 1950s. Reactive dye molecules contain reactive groups that can react with hydroxyl groups in cellulose and amino groups in protein fibers, and form covalent bonds with Read More

2021-08-02

How to improve the color fastness of reactive dyesReactive dyes dye cellulose fibers to form chemical bonds with the fibers in the form of covalent bonds. Therefore, theoretically, the covalent bond between the dye and the fiber can give the dyed fabric excellent dye fastness. But in fact, its dyed Read More

2021-07-16

10 mistakes often made with reactive dyes!1. Why is it required to use a small amount of cold water to adjust the slurry and the temperature of the compound should not be too high?(1) Use a small amount of cold water to adjust the slurry first. The purpose is to make the dye easy to fully wet out. I Read More

2021-07-14

Dyeing process of yarn-dyed fabricThe foam dyeing process of fabrics, yellow, pink, orange, red...etc. The world is full of colors. As far as the textile industry is concerned, the importance of colors has increased a lot. In the world of textiles and clothing, color is one of the factors that attra Read More

2021-06-25

Dyeing of cotton knitted fabric with reactive dyes1. The characteristics of reactive dyes1. Reactive dyes are soluble in water and contain active genes in the molecular structure. Under certain conditions, they can covalently bond with the hydroxyl groups on cellulose fibers.2. Reactive dyes have br Read More

2021-05-14

Performance defects of medium temperature reactive dyesThere are varying degrees of "uneven dyeing" in the process of dip dyeing with moderate temperature reactive dyes. The main performance is that it is easy to produce color stains or uneven color, and poor color fastness. This often results in re Read More

2021-04-16

The difference between color fastness, color fastness and staining fastnessColor fastnessColor fastness (Color fastness) is also called color fastness, dye fastness. It refers to the resistance of the color of textiles to various effects during processing and use.The fastness grade is evaluated acco Read More

2021-02-12

What are the characteristics of reactive dyes?What we often call reactive dyes is also called reactive dyes. It is a type of dyes that react with fibers during dyeing. Reactive dyes are a new type of dyes, including two main components: the parent dye and the reactive group. , The group that can rea Read More

2021-02-10

Level dyeing problem of reactive dyesWhen reactive dyes are dyed, special bath softeners have been used to prevent rope creases or to promote dye penetration.Since reactive dyes are water-soluble, anionic levelling agents are generally not used. However, some reactive dyes have low solubility in alk Read More

2021-02-08

The solution degree of reactive dyes is related to alkaline agentsWhen the alkali agent is added, the β-ethylsulfone sulfate of the reactive dye will undergo an elimination reaction to form its real vinyl sulfone, which is very soluble in genes. Since the elimination reaction requires very few alkal Read More

2021-01-06

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

2020-12-03

Background: The large chemical raw material environment is constantly changing, existing suppliers are incapable, and customer requirements are constantly increasing.Challenge: The customer's existing supplier's product quality has problems, while the price remains high, and the customer plans to change suppliers. Read More