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A kind of hydroxyacrylic acid dispersion modified by glycidyl p-hydroxybenzoate and preparation method thereof

A technology of p-hydroxybenzoic acid and glycidyl ester, applied in the field of materials, can solve problems such as high cost, and achieve the effects of low VOC content, high solid content and hydroxyl value, and excellent performance

Active Publication Date: 2021-03-02
上海祥越实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the hydroxy acrylic dispersions on the market are mostly single hydroxyl groups, and the hydroxyl groups are mainly introduced by acrylate monomers with hydroxyl groups. However, in some special industrial fields, higher hydroxyl content is often required. If the introduction of hydroxyl groups is only based on monohydroxyl acrylate monomers, it will inevitably increase the cost. Grafting of special cheap monomers to introduce hydroxyl groups has become an important means to solve this problem.

Method used

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  • A kind of hydroxyacrylic acid dispersion modified by glycidyl p-hydroxybenzoate and preparation method thereof
  • A kind of hydroxyacrylic acid dispersion modified by glycidyl p-hydroxybenzoate and preparation method thereof
  • A kind of hydroxyacrylic acid dispersion modified by glycidyl p-hydroxybenzoate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Mix 5g of glycidyl p-hydroxybenzoate, 1.5g of m-chloroperoxybenzoic acid, 2.0g of ethylene glycol butyl ether, 10g of methyl methacrylate, 10g of butyl acrylate, and 10g of hydroxyethyl methacrylate, and heat React at 50°C for 1.0h, then raise the temperature to 135°C and continue the reaction for 1h, then cool down to 80°C, add an appropriate amount of N,N dimethylethanolamine to neutralize, add an appropriate amount of deionized water to stir and disperse for 1-2h, and discharge , to obtain the hydroxyacrylic acid dispersion (hereinafter referred to as product A) modified by glycidyl p-hydroxybenzoate.

Embodiment 2

[0018] Mix 8g of glycidyl p-hydroxybenzoate, 2.5g of m-chloroperoxybenzoic acid, 3.0g of propylene glycol butyl ether, 18g of methyl methacrylate, and 22g of methyl acrylate, heat to 60°C for 0.5h and then heat up to 120°C After continuing to react at ℃ for 2 hours, lower the temperature to 70℃, add an appropriate amount of triethylamine to neutralize, add an appropriate amount of deionized water to stir and disperse for 1-2 hours, and discharge the material to obtain the modified glycidyl p-hydroxybenzoate The hydroxyacrylic acid dispersion (hereinafter referred to as product B).

Embodiment 3

[0020] Mix 5g of glycidyl p-hydroxybenzoate, 1.5g of m-chloroperoxybenzoic acid, 2.0g of ethylene glycol butyl ether, 10g of methyl methacrylate, 10g of butyl acrylate, and 10g of hydroxyethyl methacrylate, and directly Heat to 135°C and continue to react for 1 hour, then cool down to 80°C, add an appropriate amount of N,N dimethylethanolamine to neutralize, add an appropriate amount of deionized water to stir and disperse for 1-2 hours, and discharge to obtain product C.

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Abstract

The invention relates to a p-hydroxybenzoic acid glycidyl ester modified hydroxy acrylic acid dispersoid and a preparation method thereof. The selected peracid compound not only can provide reactive hydrogen, but also can serve as an initiator, and the p-hydroxybenzoic acid glycidyl ester modified novel hydroxy acrylic acid dispersoid is prepared by a one-pot method; in a preparation process, useof a reaction reagent, a cosolvent and the like is reduced, and the prepared hydroxy acrylic acid dispersoid is excellent in performance, high in solid content and hydroxyl value and low in VOC content; and moreover, hydroxy acrylic acid dispersoid paint prepared by the invention is excellent in waterproofness and ethanol resistance.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to a hydroxyacrylic acid dispersion modified by glycidyl p-hydroxybenzoate and a preparation method thereof. Background technique [0002] The water-based two-component polyurethane is mainly formed by curing and cross-linking the hydroxyl functional groups in the water-based hydroxyacrylic dispersion and the hydroxyl reactant water-based polyisocyanate curing agent. Most of the hydroxy acrylic dispersions on the market are mostly single hydroxyl groups, and the hydroxyl groups are mainly introduced by acrylate monomers with hydroxyl groups. However, in some special industrial fields, higher hydroxyl content is often required. If the hydroxyl group is only introduced by a single-hydroxy acrylate monomer, it will inevitably increase the cost. Grafting the introduction of hydroxyl groups through special cheap monomers has become an important means to solve this problem. The intro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/14C08F220/18C08F220/20C08F4/34C08F8/00C09D175/04
CPCC08F4/34C08F8/00C08F220/14C08F220/18C08F220/20C09D175/04C08F220/1804
Inventor 舒适王元有徐洁陈锁金金党琴黄德奇徐雪姣
Owner 上海祥越实业有限公司
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