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A kind of waterborne acrylic resin and its application

A water-based acrylic and resin technology, applied in the direction of coating, etc., can solve the problems of easy hydrolysis, fast degradation and aging of paint film, poor alkali resistance and anti-ultraviolet performance, and achieve aging degradation delay, good anti-ultraviolet performance, and improved The effect of adhesion

Active Publication Date: 2020-11-06
CHAMBROAD CHEM IND RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Because water-based acrylic resin has the advantages of non-toxic, tasteless, low cost, and low pollution, it has been widely used as a film-forming material for water-based coatings. However, due to the poor alkali resistance and UV resistance of traditional water-based acrylic resins, resulting The prepared water-based paint is easily hydrolyzed under alkaline conditions, and the paint film formed after coating is degraded and aged faster under ultraviolet radiation.

Method used

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  • A kind of waterborne acrylic resin and its application
  • A kind of waterborne acrylic resin and its application
  • A kind of waterborne acrylic resin and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] 20g of acrylic acid, 30g of methyl methacrylate, 25g of methacrylic acid, 45g of hydroxyethyl acrylate, 45g of butyl methacrylate, 10g of vinyltrimethoxysilane, 2g of benzoyl peroxide and 2g of glycidyl tert-carbonate Mix and stir to obtain a mixture. Put 50g of propylene glycol methyl ether into a four-necked flask, raise the temperature to 95°C, add 40g of the above mixture into it, and pre-react at 95°C for 30min. Add the rest of the above mixture dropwise in 2.5 hours; after the dropwise addition, keep warm for 2 hours; add 0.4g benzoyl peroxide and 20g propylene glycol methyl ether, keep warm for 2 hours (the reaction temperature is always 95°C); measure the acid value, acid value is about 50, and after cooling to 65°C, neutralize with a calculated amount of N-N dimethylethanolamine; finally add a certain amount of water and propylene glycol methyl ether to dilute the neutralized product to obtain a water-based acrylic resin (solid content 50wt%, Propylene glycol ...

Embodiment 2

[0046] 25g of acrylic acid, 35g of methyl methacrylate, 30g of methacrylic acid, 50g of hydroxyethyl acrylate, 48g of butyl methacrylate, 15g of vinyltrimethoxysilane, 5g of benzoyl peroxide and 8g of glycidyl tert-carbonate Mix and stir to obtain a mixture. Put 80g of propylene glycol methyl ether into a four-neck flask, raise the temperature to 100°C, add 40g of the above mixture into it, and pre-react at 100°C for 45min. Add the rest of the above mixture dropwise in 2 hours; after the dropwise addition, keep warm for 2 hours; add 0.6g benzoyl peroxide and 25g propylene glycol methyl ether, keep warm for 2 hours (the reaction temperature is always 100°C); measure the acid value, the acid value is 50 or so, after cooling down to 65°C, neutralize with a calculated amount of N-N dimethylethanolamine; finally add a certain amount of water and propylene glycol methyl ether to dilute the neutralized product to obtain a water-based acrylic resin (solid content 50wt%, propylene glyc...

Embodiment 3

[0048] 30g of acrylic acid, 40g of methyl methacrylate, 28g of methacrylic acid, 47g of hydroxyethyl acrylate, 50g of butyl methacrylate, 12g of vinyltrimethoxysilane, 8g of benzoyl peroxide and 5g of glycidyl tert-carbonate Mix and stir to obtain a mixture. Put 100g of propylene glycol methyl ether into a four-neck flask, raise the temperature to 105°C, add 40g of the above mixture into it, and pre-react at 105°C for 60min. Add the rest of the above mixture dropwise in 1.5 hours; after the dropwise addition, keep warm for 2 hours; add 0.8g benzoyl peroxide and 30g propylene glycol methyl ether, keep warm for 2 hours (the reaction temperature is always 105°C); measure the acid value, acid value is about 50, and after cooling to 65°C, neutralize with a calculated amount of N-N dimethylethanolamine; finally add a certain amount of water and propylene glycol methyl ether to dilute the neutralized product to obtain a water-based acrylic resin (solid content 50wt%, Propylene glyco...

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Abstract

The invention belongs to the field of synthetic resins, in particular to a water-based acrylic resin and its application. The water-based acrylic resin provided by the present invention is prepared according to the following method: a) under the presence of an initiator, the comonomer is polymerized in an organic solvent to obtain a reaction solution; the comonomer includes acrylic acid, methyl methacrylate, Methacrylic acid, hydroxyethyl acrylate, butyl methacrylate and glycidyl tert-carbonate; b) the reaction solution is neutralized and then mixed with water to obtain a water-based acrylic resin. The present invention successfully solves the problem that the water-based acrylic resin is easily hydrolyzed under alkaline conditions by adopting various monomers to chemically modify the water-based acrylic resin; and the modified water-based acrylic resin also has good anti-ultraviolet performance. After it is formulated into a paint, the aging degradation of the paint film under ultraviolet irradiation can be significantly delayed.

Description

technical field [0001] The invention belongs to the field of synthetic resins, in particular to a water-based acrylic resin and its application. Background technique [0002] Coatings have been continuously developed with the progress of human civilization and have a long history. From the use of animal oils and resins secreted by plants as film-formers to today's high molecular polymers synthesized from petrochemical products as film-formers, people have carried out long-term exploration. With the progress of society and the continuous improvement of human cognition, people gradually realize that the emission of volatile organic compounds (VOC) from traditional solvent-based coatings has a great destructive effect on the ecological environment of the earth, and at the same time, human health is also greatly affected. threaten. Therefore, the development of green and environmentally friendly coatings has become an important direction for the development of the coatings ind...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/20C08F220/18C08F220/06C08F220/14C08F230/08C09D133/14C09D133/10
CPCC08F220/18C08F220/1804C08F220/20C09D143/04C08F220/06C08F220/14C08F230/08
Inventor 崔国栋马韵升徐茂利董双建栾波李玉君路建胡耀
Owner CHAMBROAD CHEM IND RES INST CO LTD
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