A kind of copolymer P, water-based dispersion resin and its application in water-based paint

A technology of copolymers and resins, applied in the direction of coatings, etc.

Active Publication Date: 2020-12-15
WANHUA CHEMICAL (NINGBO) CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Resins with higher early water resistance than existing waterborne hydroxyacrylic dispersions have not yet been discovered

Method used

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  • A kind of copolymer P, water-based dispersion resin and its application in water-based paint
  • A kind of copolymer P, water-based dispersion resin and its application in water-based paint
  • A kind of copolymer P, water-based dispersion resin and its application in water-based paint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Add 240g of Pnb into the reactor containing heating device, condensing device and stirring device and heat it to 140°C. When the temperature of the initial material rises to 140°C, add 65g of styrene and 1g of DTBP into the reactor at one time. At this temperature Reaction 1-2h. After that, the following monomer mixture was evenly added dropwise in the reactor: 260g methyl methacrylate, 130g butyl acrylate, 246g hydroxyethyl methacrylate, 257g isooctyl acrylate and 26g DTBP, and the dropping time was about 3.5 hours. After the dropwise addition of the monomer mixture was completed, the temperature was kept at this temperature for 1 hour. Then the following monomer mixture is evenly added dropwise in the reactor: 140g methyl methacrylate, 58g butyl acrylate, 73g hydroxyethyl methacrylate, 34.2g acrylic acid and 6g DTBP, the time for adding is about 1 hour, and wait for After the dropwise addition of the monomer mixture, keep at this temperature for 1 hour, cool down to ...

Embodiment 2

[0076] Add 240g of Pnb into the reactor containing heating device, condensing device and stirring device and heat it to 140°C. When the temperature of the initial material rises to 140°C, add 95g of isobornyl methacrylate and 37g of acrylic acid into the reactor at one time Ethyl ester and 2g DTBP, react at this temperature for 1-2h. After that, the following monomer mixture was evenly added dropwise in the reactor: 230g methyl methacrylate, 130g butyl acrylate, 246g hydroxyethyl methacrylate, 220g isooctyl acrylate and 25gDTBP, and the time for adding was about 3.5 hours. After the monomer mixture was added dropwise, it was kept at this temperature for 1 hour. Then the following monomer mixture is evenly added dropwise in the reactor: 140g methyl methacrylate, 58g butyl acrylate, 73g hydroxyethyl methacrylate, 34.2g acrylic acid and 6g DTBP, the time for adding is about 1 hour, and wait for After the dropwise addition of the monomer mixture, keep at this temperature for 1 ho...

Embodiment 3

[0078]Add 240g of Pnb into the reactor containing heating device, condensing device and stirring device and heat it to 140°C. When the temperature of the initial material rises to 140°C, add 133g of styrene, 56g of isooctyl acrylate and 2g of DTBP, dropping time 0.5h. After that, the following monomer mixture was evenly added dropwise in the reactor: 174g methyl methacrylate, 126g butyl acrylate, 246g hydroxyethyl methacrylate, 220g isooctyl acrylate and 25g DTBP, and the dropping time was about 3.5 hours. After the monomer mixture was added dropwise, it was kept at this temperature for 1 hour. Then the following monomer mixture is evenly added dropwise in the reactor: 140g methyl methacrylate, 58g butyl acrylate, 73g hydroxyethyl methacrylate, 34.2g acrylic acid and 6g DTBP, the time for adding is about 1 hour, and wait for After dropping the monomer mixture, keep it at this temperature for 1 hour, lower the temperature to 110°C, add 85.3g of DMEA and stir for 15 minutes, th...

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Abstract

The invention belongs to the technical field of aqueous coating materials, and provides a copolymer P, an aqueous dispersion resin containing the copolymer P, and applications of the aqueous dispersion resin in aqueous coating materials. The copolymer P is prepared by carrying out a reaction on the following components by weight: 3-30 wt% of a hydroxyl-free hydrophobic polymer I, 30-80 wt% of a hydroxyl functional hydrophobic polymer II, and 10-40 wt% of a carboxyl functional hydrophilic polymer III, wherein a monomer Ia and an initiator are subjected to a polymerization reaction to obtain thehydroxyl-free hydrophobic polymer I, and the monomer Ia is one or a variety of materials selected from a vinyl compound, a vinyl ester and (methyl) acrylate. According to the present invention, withthe application of the obtained aqueous dispersion resin in the coating material, the early-stage water resistance of the prepared paint film can be significantly improved.

Description

technical field [0001] The invention belongs to the technical field of water-based paint, in particular to a copolymer P, water-based dispersion resin and its application in water-based paint. Background technique [0002] In the prior art, there are many studies on hydroxyl-functional aqueous dispersion resins and their use in aqueous coating compositions. As low-solvent environment-friendly coatings have become the development trend of coatings, there are more and more market applications of various waterborne hydroxyacrylic dispersions. Waterborne hydroxyacrylic dispersions are widely used in both amino baking varnishes and two-component polyurethane lacquers because of their high gloss, high fullness and high resistance. However, its water resistance is still lower compared to traditional solvent-based resins. [0003] The water resistance of two-component polyurethane paint is generally divided into: early water resistance and water resistance. Early water resistance...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G81/02C08J3/07C09D187/00C08L87/00
CPCC08G81/021C08J3/07C08J2387/00C09D187/005
Inventor 刘旭阳赵鹏伟乔义涛韩强李燕杰邓俊英孙家宽
Owner WANHUA CHEMICAL (NINGBO) CO LTD
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