There are two ways of dyeing viscose in carded wool spinning mills: piece dyeing and loose dyeing in grey fabrics, and they have different requirements for dyes. 1. Piece-dyed and piece-dyed fa

Product Name: Solvent Blue 35 C. I. No.: 61554  Molecular Formula: C22H26N2O2 CAS No.:17354-14-2 SHADE: brilliant green blue (NC raw lacquer). Dark blue powde

Core Tips: Reasons for blooming: 1. Improper selection of dyes 2. Improper selection and use of levelling agent 3. Differences in raw materials 4. Improper control of temperature r

Vat dyes can be used to dye cotton and polyester-cotton and virgin cotton blended fabrics. According to the different dyeing methods, it can be divided into leucochromic dyeing method and suspensio

Solvent dyes are limited to the coloring of amorphous polymers (such as PS, ABS and other engineering plastics), because these polymers have high glass transition temperature. Under normal use c

Solvent dyes mainly include azo type (monoazo and bisazo), azo metal  complex type, triarylmethane free bases, anthraquinones, acyl Cyanines (copper phthalocyanine, aluminum phthalocyanine) an

According to statistics, the fastness problem is one of the most frequently asked questions among all dyeing industry.below technical experience for us maybe can help you whatever you use acid dye,

The mechanism of photofading of dyes is very complicated, but it is mainly that the dyes are stimulated after absorbing photons, and a series of photochemical reactions occur to destroy the structu

Direct dyeing requires the use of salt to promote dyeing, and after the cotton cloth absorbs a lot of salt, the hand feels rough! In addition, the direct dye has poor color fastness and requires th

Solvent dyes are dyes that are insoluble in water and soluble in oils or organic agents. Solvent dyes can be divided into two categories: oil-soluble and alcohol-soluble. Solvent dyes are mainly us

The direct dye has a molecular structure in which a water-soluble group such as a sulfonic acid group (-s H) or a radical (-COON) is linearly arranged, and the aromatic ring structure is in the sam

Adding salt to the dyeing solution can increase the percentage of dyeing. A very important reason why salt has a dye-dyeing effect is to reduce the charge effect during fiber dyeing. Cellulose fibe

Regarding pre-treatment: Poor whiteness includes imperfect whiteness, unevenness, and hair effect less than 8-10cm / 30min, which is related to the quality of knitted fabrics. For example, if the c

Vat dyes, also known as Shihlin dyes, are derived from English: Indanthrene (indanthrene). Vat dyes are also known as dyes that never fade because of their high fastness to sunlight.Basic knowledge

Color matching is a complicated, detailed and important task. In addition to the basic color knowledge and keen color discrimination ability, proofing personnel should also master the basic princip

Emperor company have much experance for exportation. so, we can supply good packing like carton box, iron drum, fiber durm, ton tanks and compound bag. always will 20 or 25kg/unit. also some liquid

For firstly, we confirm samples. after samples passed and price confirmed, then customer can arrange TT payment or LC to us, then we will arrange goods within 3-10 days. if old customer and famous

Of course! we can supply samples 20-100g. Saples postage is negotated.Sampes will be send express such as EMS.TNT.DHL/FEDEX. also, we can send samples according customer requirment

Solvent dyes are dyes that are insoluble in water and soluble in oils or organic agents. Solvent dyes can be divided into two categories: oil-soluble and alcohol-soluble. Solvent dyes are mainly us

We understand that nigrosine black(solvent black 7) and its benefits can be used more effectively in plastics, mainly in high-end nylon products. However, nigrosine black is not in compliance

The black-colored flower cloth is made of aniline black as a base color, and is dyed with a reactive dye, vat dye, and a stable insoluble azo dye. This method has a dark background, a clear color,

The effect of temperature on the dyeing performance of different dyes is not same. For direct dyes with high dyeing rate and good diffusion performance, the color is the deepest at 60-70 °C, an