Disperse Dyes Definition

Date:Jul 03, 2019

The disperse dye molecules are small, structurally free of water-soluble groups, and dyed by uniform dispersion in the dye liquor by the action of a dispersing agent. It can be dyed with polyester fiber, acetate fiber and polyamide fiber to become a special dye for polyester.

Disperse dyes can be roughly divided into disperse orange, disperse blue, disperse yellow, and disperse red. It can be mixed in a certain proportion with several different disperse dyes to obtain disperse dyes such as disperse black, disperse green, and disperse violet.

In the process of commercial processing of disperse dyes, in order to enable the commercial dye to be rapidly dispersed in water to form a uniform and stable colloidal suspension, the fineness of the dye particles must be about 1 micron, and a dispersant and a wetting agent are added during the sanding process to disperse The post-treatment of dyes generally consists of sanding, seasoning, spray drying, and packaging. A lot of auxiliaries are used in the post-treatment process, such as lignin, MF, anti-settling agent (SOS), dust-proofing agent, dispersing agent NNO, and adding Yuanmingming powder to adjust the strength.

Disperse dyes are one of the most important and major types in the dye industry. They do not contain strong water-soluble groups and are a type of nonionic dye that is dyed in a dispersed state during dyeing. The particle fineness is required to be around 1 μm. After the raw dye is obtained, it is subjected to post-treatment processing, including crystal form stabilization, and commercial treatment with a dispersing agent, to obtain a commercial dye. Mainly used for printing and dyeing polyester and its blended fabrics. Can also be used for the printing and dyeing of synthetic fibers such as acetate, nylon, polypropylene, chlorin, acrylic.