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Polymer dispersant for liquid disperse dye, and synthesis method and application of polymer dispersant

A technology of polymer dispersant and liquid disperse dye, which is used in dyeing, textile and paper making to achieve high grinding efficiency and good storage stability.

Active Publication Date: 2021-08-20
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are few studies on high-efficiency polymer dispersants suitable for preparing liquid disperse dyes, and it is urgent to further develop new products.

Method used

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  • Polymer dispersant for liquid disperse dye, and synthesis method and application of polymer dispersant
  • Polymer dispersant for liquid disperse dye, and synthesis method and application of polymer dispersant
  • Polymer dispersant for liquid disperse dye, and synthesis method and application of polymer dispersant

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Embodiment 1

[0029] (1) Synthesis of polymer dispersant:

[0030]

[0031] Among them, n is 15.

[0032] Weigh three monomers of octadecyl methacrylate, acrylic acid, and methoxypolyethylene glycol methacrylate and dissolve them in isopropanol, mix them uniformly, add them to the reaction flask and stir at a certain stirring rate, Fill the reaction flask with nitrogen for 20 minutes to remove the oxygen in the reaction device; dissolve the initiator in acetone, and when the temperature rises to 60°C, add the initiator solution dropwise through a micro-injection pump and control the dropping time for 1 hour; After the reagent is added dropwise, keep it warm at 80°C for 7 hours; after the reaction, drop the temperature and add 30% sodium hydroxide solution dropwise to the reaction system to adjust the pH value of the system to 8.0; discharge through a rotary evaporator The solvent was distilled off, and the product was washed with ether and dried.

[0033] Description: The molar ratio o...

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Abstract

The invention discloses a polymer dispersant for a liquid disperse dye as well as a synthesis method and application of the polymeric dispersant. The synthesis method comprises the following steps: weighing three monomers, namely octadecyl methacrylate, acrylic acid and methoxy polyethylene glycol methacrylate, dissolving the monomers in isopropanol, uniformly conducting mixing, adding a formed mixture into a reactor, conducting stirring, and introducing nitrogen into a reaction flask to remove oxygen in the reactor; dissolving an initiator in acetone, when the temperature rises to 50-70 DEG C, dropwise adding the initiator solution through a micro-injection pump, and controlling the dropwise adding time to be 0.5-1.5 h; after dropwise adding the initiator, keeping the temperature at 75-85 DEG C and conducting reacting for 6-8 hours; adjusting the pH value of the system to 7.5-8.5, and conducting discharging; and performing post-treatment to obtain the polymer dispersant. The dispersant with the structure is relatively high in grinding efficiency when being used for preparing a liquid disperse dye, and the storage stability of the dye is relatively good.

Description

technical field [0001] The invention relates to the field of terpolymer dispersants, in particular to a polymer dispersant for liquid disperse dyes and a synthesis method and application thereof. Background technique [0002] Disperse dyes are a kind of dyes with simple structure and no water-soluble groups, which are mainly used for dyeing and printing of polyester fabrics. Polyester is an important textile fiber in my country, accounting for more than 70% of the world's total. Therefore, disperse dyes are a class of dyes with a large demand. At present, disperse dyes are mainly powders, but due to the high content of additives in powder disperse dyes, a large amount of water washing is required to remove the residual dyeing agent after dyeing or printing, resulting in the consumption of a large amount of water resources and the pollution of water resources. , In addition, the application of powder disperse dyes requires chemical materials, which is not conducive to the d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/06C08F220/06C08F220/18D06P1/16D06P1/52
CPCC08F283/065D06P1/16D06P1/5257C08F220/06C08F220/1818
Inventor 孙洋洋姜建堂沈一峰
Owner ZHEJIANG SCI-TECH UNIV
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