Leather Dyes Specialized Manufacturer
Ltd. is an acid dyes, direct dyes, leather dyes, feed additives and other chemical raw materials manufacturers, products are mainly used in leather, wool, tweed, silk, paper, wood, metal and other industry sectors.
A brief introduction to the classification of leather dyes.
The dye used for dyeing protein leather fibers is calledLeather dye.Leather dyeIt is easily soluble in water, and the process of absorption, fixation, and coloring of leather fibers in an acidic medium is called dyeing.Leather dyeIt requires vivid colors and must also have excellent"affinity" and various fastness functions, such as light fastness, wash fastness, dry and wet rubbing fastness, light resistance, sweat resistance, migration resistance, and other professional indicators for leather dyeing.
Leather dyeThe classification mainly includes the following types:
1Acid dyes are anionic dyes used for dyeing leather fibers in an acidic bath. According to dyeing characteristics and application methods, they can be divided into strong acid dyes and weak acid dyes. Strong acid dyes have a simple structure, small organic molecular structure, and a high proportion of sulfonic acid groups. In dyeing,Leather dyethey basically exist in ionic form, and good coloring must be done in a strong acidic medium to be used for dyeing leather fibers.
2Direct dyes are dyes that can dye cotton, linen, and viscose cellulose fibers directly without the help of mordants. Some varieties of direct dyes can be used directly for leather dyeing in acidic media. Direct dyes have a large molecular weight, slow penetration, and a more complex production process than monoazo acid dyes. The product price is low, but the indicators such as wet fastness, wash fastness, light fastness, and wet rubbing fastness are not suitable for dyeing leather fibers, making themLeather dyeproducts that have been eliminated from the market.
3Weak acid dyes and leather acid complex dyes have excellent indicators such as brightness, rapid penetration, light fastness, water resistance, and migration resistance. The products do not contain aromatic amines and heavy metals, making them environmentally friendly. They are currently the main products in both domestic and externalLeather dyemarkets.
4Leather acid complex dyes and neutral dyes are both ionic acid dyes. When dyeing leather fibers, it is suitable to dye leather in a strong acid bath. Like weak acid dyes, they have a strong affinity for leather fibers, but compared to weak acid dyes, the exposure is higher, and the complexation with metal ions greatly improves wash fastness, with sunlight fastness generally at6-7level.
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Dezhou Jinmao Chemical Co., Ltd.
Address: 1922 Yingbin Street, Lingcheng District, Dezhou City, Shandong Province, China
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