Comb type disperse dye dispersing agent for printing and preparation method thereof

A technology of disperse dyes and dispersants, which is applied in the fields of dyeing, textiles and papermaking, etc. It can solve the problems affecting the compatibility of printing paste, the viscosity of color paste, and the quality of printing, so as to improve the effect of surface tension and improve the wetness. Humidity, the effect of improving wetting and dispersing ability

Active Publication Date: 2020-06-26
SHANGHAI YUKING WATER SOLUBLE MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing dispersants used in disperse dyes are carboxylate and polyelectrolyte polymer surfactants, which will greatly affect the interaction between dyes and printing pastes with poor salt resistance when used in the printing process. Capacitance, resulting in a decrease in the viscosity of the color paste, causing problems such as bleeding and unclear patterns, which greatly affect the printing quality

Method used

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  • Comb type disperse dye dispersing agent for printing and preparation method thereof
  • Comb type disperse dye dispersing agent for printing and preparation method thereof
  • Comb type disperse dye dispersing agent for printing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1. Under the protection of nitrogen, add 70 parts of polyethylene glycol ether monomethylamine (EO=40), 5 parts of cyclopentylamine, and 3 parts of octylamine, heat to 80 ° C, after completely dissolving, add styrene maleic anhydride 10 parts of copolymer, Mn=2000, MA accounted for 35%, heated up to 140°C, completely dissolved.

[0032] 2. Add 1 part of propionic acid as a catalyst and keep it warm for 5 hours.

[0033] 3. Cool down to 100°C, add 0.1 part of cross-linking agent, amino-terminated polyhexamethyltrisiloxane, and keep it warm for 2 hours.

[0034] 4. Add water, dilute to a solid content of 40%, and adjust the pH value to 5.0 with sodium hydroxide to obtain the comb-shaped dispersant.

Embodiment 2

[0036] 1. Under the protection of nitrogen, add 60 parts of polyethylene glycol ether monobutylamine (EO=70), 10 parts of ethylcyclohexylamine, and 6 parts of laurylamine, heat to 90 ° C, after completely dissolving, add styrene horse 20 parts of maleic anhydride copolymer, Mn=7500, MA accounted for 20%, heated up to 150°C, completely dissolved.

[0037] 2. Add 3 parts of catalyst sulfamic acid and keep warm for 10 hours.

[0038] 3. Cool down to 110°C, add 0.25 part of cross-linking agent, amino-terminated polyoctamethyltetrasiloxane, and keep it warm for 2 hours.

[0039] 4. Add water, dilute to a solid content of 60%, and adjust the pH to 6.0 to obtain the comb-shaped dispersant.

Embodiment 3

[0041] 1. Under the protection of nitrogen, add 80 parts of polyethylene glycol ether monohexylamine (EO=50), 7.5 parts of butylcyclohexylamine, and 4.5 parts of decylamine, heat to 100 ° C, after completely dissolving, add styrene maleic anhydride 40 parts of copolymer, Mn=5000, MA accounted for 30%, heated up to 160°C, completely dissolved.

[0042] 2. Add 5 parts of catalyst 4-toluenesulfonic acid and keep warm for 8.5 hours.

[0043] 3. Cool down to 120°C, add 0.2 part of cross-linking agent amino-terminated polydodecamethylhexasiloxane, and keep it warm for 3 hours.

[0044] 4. Add water, dilute to a solid content of 50%, and adjust the pH to 6.0 to obtain the comb-shaped dispersant.

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Abstract

The invention provides a comb type disperse dye dispersing agent for printing and a preparation method thereof. The comb type disperse dye dispersing agent for printing comprises a styrene maleic anhydride copolymer, polyethylene glycol ether monoamine, alkylamine containing a cyclic structure, long-chain alkylamine, amino-terminated polydimethylsiloxane and a catalyst. The preparation method comprises the following steps of: adding polyethylene glycol ether monoamine, alkylamine containing a cyclic structure and long-chain alkylamine under the protection of nitrogen, heating to completely dissolve, adding the styrene maleic anhydride copolymer, heating to 140-160 DEG C, and completely dissolving; adding the catalyst, and carrying out a heat preservation reaction; cooling to 100-120 DEG C,adding amino-terminated polydimethylsiloxane, and carrying out a heat preservation reaction; and adding water, diluting until the solid content is 40-60%, and adjusting the pH value to 5-7 to obtainthe comb type disperse dye dispersing agent. According to the invention, the styrene maleic anhydride is used as a basic resin for comb type modification, and a triple dispersion structure of anchoring, steric hindrance and charge repulsion is constructed through modification of polyethylene glycol ether monoamine and alkylamine containing a cyclic structure.

Description

technical field [0001] The invention belongs to the technical field of disperse dyes, and in particular relates to a comb-type disperse dye dispersant for printing and a preparation method thereof. Background technique [0002] Disperse dyes are a class of non-ionic dyes with relatively small molecules and no water-soluble groups in their structure. They are low in water solubility and mainly exist in the form of fine particles in dispersed state in water during dyeing. It must be dyed with the aid of a dispersant to disperse the dye evenly in the dyeing solution in order to dye fibers such as polyester. Disperse dyes are a class of dyes developed with the development of water-based fibers. After the appearance of acetate fiber in the 1920s, it was difficult to dye with water-soluble dyes, so people synthesized a class of dyes with strong hydrophobicity, disperse dyes. With the rapid development of polyamide fibers, acrylonitrile fibers, especially polyester fibers, disper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/52D06P1/607D06P1/645D06P1/16D06P3/54
CPCD06P1/5221D06P1/607D06P1/645D06P1/5292D06P1/16D06P3/54
Inventor 王宇朱广东陈占郭永江魏亚娜
Owner SHANGHAI YUKING WATER SOLUBLE MATERIAL TECH
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