What is the structure of disperse dyes?
2022-05-10
Disperse dyes are a class of dyes with relatively small molecules and no water-soluble groups in their structure. When dyeing, it must use a dispersant to evenly disperse the dye in the dye solution to dye fibers such as polyester. The knowledge shared with you today is the structure of disperse dyes, let's take a look.
Disperse dyes have small molecules and do not contain water-soluble groups in structure. They are uniformly dispersed in the dye solution with the help of dispersants for dyeing. It can dye polyester fiber, acetate fiber and polyamide fiber, becoming a special dye for polyester.
Disperse dyes can be roughly divided into disperse orange, disperse blue, disperse yellow and disperse red. Several different disperse dyes can be matched in a certain proportion to obtain disperse black, disperse green, disperse violet and other disperse dyes.
In the process of commercial processing of disperse dyes, in order to make the commercial dyes quickly disperse in water into a uniform and stable colloidal suspension, the fineness of the dye particles must reach about 1 micron. The post-processing of dyes generally consists of sanding, seasoning, spray drying and packaging. In the post-processing process, many additives are used, such as lignin, MF, anti-settling agent (SOS), dust-proofing agent, dispersing agent NNO, and Yuan Ming powder is added to adjust the strength.
Disperse dyes are the most important and main category in the dye industry. They do not contain strong water-soluble groups and are non-ionic dyes that are dyed in a dispersed state during the dyeing process. Its particle fineness is required to be about 1 μm. After the original dye is obtained, commercial dyes can be obtained only after post-processing, including stabilizing the crystal form, grinding together with dispersants and other commercial treatments. Mainly used for the printing and dyeing of polyester and its blended fabrics. It can also be used in the printing and dyeing of synthetic fibers such as acetate fiber, nylon, polypropylene, vinyl, and acrylic.
Disperse dyes have small molecules and do not contain water-soluble groups in structure. They are uniformly dispersed in the dye solution with the help of dispersants for dyeing. It can dye polyester fiber, acetate fiber and polyamide fiber, becoming a special dye for polyester.
Disperse dyes can be roughly divided into disperse orange, disperse blue, disperse yellow and disperse red. Several different disperse dyes can be matched in a certain proportion to obtain disperse black, disperse green, disperse violet and other disperse dyes.
In the process of commercial processing of disperse dyes, in order to make the commercial dyes quickly disperse in water into a uniform and stable colloidal suspension, the fineness of the dye particles must reach about 1 micron. The post-processing of dyes generally consists of sanding, seasoning, spray drying and packaging. In the post-processing process, many additives are used, such as lignin, MF, anti-settling agent (SOS), dust-proofing agent, dispersing agent NNO, and Yuan Ming powder is added to adjust the strength.
Disperse dyes are the most important and main category in the dye industry. They do not contain strong water-soluble groups and are non-ionic dyes that are dyed in a dispersed state during the dyeing process. Its particle fineness is required to be about 1 μm. After the original dye is obtained, commercial dyes can be obtained only after post-processing, including stabilizing the crystal form, grinding together with dispersants and other commercial treatments. Mainly used for the printing and dyeing of polyester and its blended fabrics. It can also be used in the printing and dyeing of synthetic fibers such as acetate fiber, nylon, polypropylene, vinyl, and acrylic.
Previous:How do disperse dyes work?
