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Polyacrylic dispersant for paint dyeing and preparation method thereof

A paint dyeing and polypropylene technology, which is applied in the field of textile auxiliaries, can solve the problems of poor stability of inorganic dispersants, inability to firmly adsorb particles, and unsatisfactory stability, and achieve extended service life, excellent gloss, and enhanced storage stability. Effect

Inactive Publication Date: 2017-09-12
苏州凯邦生物技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, inorganic dispersants mainly rely on physical adsorption and charge adsorption to make the particle surface charged, and then disperse the particles through electrostatic repulsion; however, inorganic dispersants have poor stability and are prone to desorption
Organic small molecule dispersants mainly include organic electrolyte and surfactant dispersants; organic small molecule dispersants have a better dispersion effect than inorganic dispersants, but because of their small molecular weight and too short molecular chains, they cannot form firm adsorption on particles , which is prone to desorption, and the stability is still not ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A preparation method of polyacrylic acid dispersant for paint dyeing, comprising the following steps:

[0022] (1) Epoxy cottonseed oil, acrylic acid, methacrylic acid, maleic acid, methylol acrylamide, emulsifier and water are added to the reaction kettle, after stirring evenly, take out half of the mixture emulsion for subsequent use;

[0023] (2) Add chain transfer agent and hydroxyethyl cellulose to the reactor, add sodium bicarbonate to adjust the pH to 5, stir and heat up to 80°C, and simultaneously dropwise add the aqueous solution of sodium persulfate and the solution taken out in step (1) Emulsion, stirring while adding dropwise, the stirring rate is 60rpm, continue to stir and react for 60min after the dropwise addition is completed, after cooling to room temperature, add NaOH to adjust the pH to 8, and concentrate by distillation under reduced pressure. After concentration under reduced pressure, the solid content is 60%. Prepare the polyacrylic acid dispersa...

Embodiment 2

[0027] A preparation method of polyacrylic acid dispersant for paint dyeing, comprising the following steps:

[0028] (1) Epoxy cottonseed oil, acrylic acid, methacrylic acid, maleic acid, methylol acrylamide, emulsifier and water are added to the reaction kettle, after stirring evenly, take out half of the mixture emulsion for subsequent use;

[0029] (2) Add chain transfer agent and hydroxyethyl cellulose to the reactor, add sodium bicarbonate to adjust the pH to 6, stir and heat up to 90°C, and simultaneously dropwise add the aqueous solution of sodium persulfate and the solution taken out in step (1) Emulsion, stirring while adding dropwise, the stirring rate is 90rpm, continue to stir and react for 90min after the dropwise addition is completed, after cooling to room temperature, add NaOH to adjust the pH to 9, vacuum distillation and concentration, the solid content after vacuum concentration is 70%, Prepare the polyacrylic acid dispersant for dyeing the paint.

[0030]...

Embodiment 3

[0033] A preparation method of polyacrylic acid dispersant for paint dyeing, comprising the following steps:

[0034] (1) Epoxy cottonseed oil, acrylic acid, methacrylic acid, maleic acid, methylol acrylamide, emulsifier and water are added to the reaction kettle, after stirring evenly, take out half of the mixture emulsion for subsequent use;

[0035] (2) Add chain transfer agent and hydroxyethyl cellulose to the reactor, add sodium bicarbonate to adjust the pH to 5, stir and heat up to 90°C, and simultaneously dropwise add the aqueous solution of sodium persulfate and the solution taken out in step (1) Emulsion, stirring while adding dropwise, the stirring rate is 60rpm, continue to stir and react for 90min after the dropwise addition is completed, after cooling to room temperature, add NaOH to adjust the pH to 8, and concentrate by distillation under reduced pressure. After concentration under reduced pressure, the solid content is 70%. Prepare the polyacrylic acid dispersa...

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PUM

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Abstract

The invention discloses a polyacrylic dispersant for paint dyeing and a preparation method thereof. The preparation method of the polyacrylic dispersant for paint dyeing comprises the steps of adding a chain transfer agent and hydroxyethyl cellulose into polymerization monomers like epoxy cotton seed oil, acrylic acid, methacrylic acid, maleic acid and methylol acrylamide, performing a polymerization reaction so as to prepare modified polyacrylic acid, adding NaOH to adjust pH to 8-9, and distilling at reduced pressure and concentrating, so as to prepare the polyacrylic dispersant for paint dyeing. The dispersant can help pigments in the dyeing paint maintain good dispersibility and have good stability, thereby effectively improving the paint dyeing effect.

Description

technical field [0001] The invention relates to the field of textile auxiliaries, in particular to a polyacrylic acid dispersant for paint dyeing and a preparation method thereof. Background technique [0002] Paint dyeing refers to making paint, adhesive, etc. into a dispersion system, making the fabric uniformly liquid-filled by dipping, rolling, etc., and then drying and baking at high temperature to make the paint evenly and firmly distributed on the surface of the fabric. Compared with traditional dye dyeing, paint dyeing has many advantages: paint has no selectivity to fibers, and has a wide range of applications; complete color spectrum, bright color, and can have fluorescent dyeing effect; the process is shorter, and dyed fabrics can have unique styles. The colorants in paint dyeing are usually organic pigments with low surface polarity and are difficult to be wetted and dispersed in the water phase. In order to prepare coatings with excellent properties, it is nece...

Claims

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Application Information

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IPC IPC(8): D06P1/52C08F289/00C08F220/06C08F222/02C08F220/58C08F2/26C08F2/30C08F2/38
CPCD06P1/5257C08F2/26C08F2/30C08F2/38C08F289/00C08F220/06C08F222/02C08F220/58
Inventor 冯海燕
Owner 苏州凯邦生物技术有限公司