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A kind of hydrophilic monomer and aqueous acrylic acid dispersion prepared by it

A technology of water-based acrylic and hydrophilic monomers, applied in the field of coatings, can solve the problems of coating film gloss, fog, water resistance decline, ion stability, etc., to reduce VOC emissions, improve gloss, and improve ion stability Effect

Active Publication Date: 2022-03-01
HENGSHUI XINGUANG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention introduces non-ionic hydrophilic groups through the carboxyl groups in the unsaturated acid, and the free radical polymerization of the double bond in the unsaturated acid is connected to the main chain of acrylic acid, which not only solves the problem of ion stability of general water-based acrylic acid dispersions, but also solves the problem of emulsification Decrease in gloss, haze, and water resistance of the coating film caused by additives

Method used

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  • A kind of hydrophilic monomer and aqueous acrylic acid dispersion prepared by it
  • A kind of hydrophilic monomer and aqueous acrylic acid dispersion prepared by it
  • A kind of hydrophilic monomer and aqueous acrylic acid dispersion prepared by it

Examples

Experimental program
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Effect test

Embodiment 1

[0029] A hydrophilic monomer, the synthesis of which includes the following steps: put 30 parts by mass of ethylene glycol and 20 parts by mass of maleic acid into a reactor, start stirring, react at a temperature of 120°C for 2 hours, and detect the acid value until the initial When the acid value is 1 / 2, the temperature is lowered, filtered, and discharged to obtain a hydrophilic monomer.

[0030] The preparation method of present embodiment aqueous acrylic acid dispersion comprises following formula and technology:

[0031] Add 20g of propylene glycol methyl ether into the reaction kettle and raise the temperature to 117°C; add 7g of methyl methacrylate, 20g of hydroxypropyl acrylate, 29g of styrene, 16g of butyl acrylate, 3g of acrylic acid, 5g of self-made hydrophilic monomer, peroxide 1.6 g of tert-butyl benzoate was mixed evenly and dropped into the reaction kettle within 4 hours. After the dropwise addition, it was kept warm for 1 hour, and 0.2 g of tert-butyl peroxybe...

Embodiment 2

[0033] A hydrophilic monomer, the synthesis of which includes the following steps: put 67 parts by mass of MPEG200 and 33 parts by mass of maleic anhydride into a reactor, start stirring, react at a temperature of 140°C for 1.8 hours, and detect the acid value to the initial acid Lower the temperature to one-half of the value, filter, and discharge to obtain a hydrophilic monomer.

[0034] The reaction mechanism of the hydrophilic monomer in this embodiment is: maleic anhydride is ring-opened by MPEG200 containing hydroxyl at a certain temperature to produce a hydrophilic monomer with a double bond, PEG200 and carboxyl, in which the double bond It can be polymerized with acrylic monomers, PEG200 has non-ionic hydrophilicity, and carboxyl group has ionic hydrophilicity, so that acrylic resin can be dispersed in water.

[0035] The preparation method of present embodiment aqueous acrylic acid dispersion comprises following formula and technology:

[0036] Add 20g of propylene g...

Embodiment 3

[0038] A hydrophilic monomer, the synthesis of which includes the following steps: put 80 parts by mass of ethylene glycol and 70 parts by mass of methylene succinic acid into a reactor, start stirring, react at a temperature of 180°C for 1.5 hours, and detect the acid When the acid value reaches 1 / 2 of the initial acid value, the temperature is lowered, filtered, and discharged to obtain a hydrophilic monomer.

[0039] The preparation method of present embodiment aqueous acrylic acid dispersion comprises following formula and technology:

[0040] Add 20g of propylene glycol methyl ether into the reaction kettle and raise the temperature to 117°C; add 10g of methyl methacrylate, 15g of hydroxypropyl acrylate, 24g of styrene, 18g of butyl acrylate, 3g of acrylic acid, 10g of self-made hydrophilic monomer, peroxide 1.6 g of tert-butyl benzoate was mixed evenly and dropped into the reaction kettle within 4 hours. After the dropwise addition, it was kept warm for 1 hour, and 0.2 g...

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Abstract

A hydrophilic monomer and a water-based acrylic dispersion prepared therefrom, belonging to the technical field of coatings, are obtained by polymerization of the following two parts, A, a hydrophilic diol; B, an unsaturated double bond-containing diacid or anhydride. The hydrophilic monomer of the present invention essentially solves the problem of blending the emulsifier and the resin, thereby greatly improving the gloss of the paint film, and at the same time solves the problem that the emulsifier dissociates in the paint film after the resin film is formed, affecting the paint film The problem of water resistance.

Description

technical field [0001] The invention belongs to the technical field of coatings and relates to the preparation of a hydrophilic monomer and a water-based acrylic dispersion, in particular to a hydrophilic monomer containing two hydrophilic groups and a water-based acrylic dispersion prepared therefrom. Background technique [0002] Acrylic resin coatings have good gloss retention, color retention, quick drying and corrosion resistance, and are widely used in light industry, household appliances, instrumentation, construction, textiles, plastics, paper and other industries. Waterborne acrylic resin coatings have the characteristics of the above solvent-based acrylic coatings, meet the requirements of environmental protection development, and are gradually replacing solvent-based coatings. Generally, water-based acrylic resins are obtained by selecting unsaturated monomers containing functional groups such as carboxyl groups and sulfonic acid groups during polymerization to co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C67/08C07C69/60C08F212/08C08F220/18C08F220/14C08F220/20C08F220/06C09D125/14
CPCC09D125/14C07C67/08C07C69/60C08F212/08C08F220/1804C08F220/14C08F220/20C08F220/06
Inventor 张增飞喻志平田海宁
Owner HENGSHUI XINGUANG CHEM
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