SIS derivative-modified waterborne polyurethane-epoxy resin and preparation method thereof

A water-based polyurethane and epoxy resin technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve problems such as poor anti-sag performance and insufficient flexibility, and achieve good anti-sag performance and bending resistance, The effect of high crosslink density and excellent adhesion

Inactive Publication Date: 2022-02-15
UNION FOSHAN CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the acetone is removed in vacuum, the epoxy resin modified water-based polyurethane emulsion is obtained, which has excellent water resistance, solvent resistance, good mechanical properties and hardness, and can be used in the fields of coatings and adhesives, but its anti-sagging performance is not good. , not enough flexibility

Method used

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  • SIS derivative-modified waterborne polyurethane-epoxy resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A SIS derivative modified water-based polyurethane-epoxy resin, which consists of: 50.0 parts of toluene diisocyanate, 15.0 parts of epoxy resin, 8.0 parts of SIS derivatives, 0.5 parts of benzoyl peroxide, poly 45.0 parts of carbonate diol, 2.5 parts of butylene glycol, 6.0 parts of dimethylol propionic acid, 2.5 parts of hydroxyethyl acrylate, 0.06 parts of dibutyltin dilaurate, 40.0 parts of acetone, 16.0 parts of ethyl acetate, triethyl 6.5 parts of amine, 4.0 parts of polyvinyl alcohol, 250.0 parts of deionized water.

[0024] A kind of preparation method of SIS derivative modified waterborne polyurethane-epoxy resin in the present embodiment, comprises the following steps:

[0025] a), in the titration tank, according to the weight of the formula, the SIS derivative and benzoyl peroxide are dissolved in ethyl acetate to obtain the mixed solution I;

[0026] b) In a four-port reactor, add polycarbonate diol, butanediol, and dimethylol propionic acid in sequence ac...

Embodiment 2

[0031] A SIS derivative modified water-based polyurethane-epoxy resin, which consists of: 70.0 parts of isophorone diisocyanate, 20.0 parts of epoxy resin, 10.0 parts of SIS derivatives, 0.7 parts of benzoyl peroxide in parts by weight 60.0 parts of polytetrahydrofuran diol, 4.0 parts of 1,4-cyclohexanedimethanol, 7.5 parts of dimethylolpropionic acid, 3.0 parts of hydroxyethyl acrylate, 0.07 parts of dibutyltin dilaurate, 50.0 parts of acetone, acetic acid 20.0 parts of ethyl ester, 5.5 parts of ammonia water, 5.0 parts of polyvinyl alcohol, 350.0 parts of deionized water.

[0032] A kind of preparation method of SIS derivative modified waterborne polyurethane-epoxy resin in the present embodiment, comprises the following steps:

[0033] a), in the titration tank, according to the weight of the formula, the SIS derivative and benzoyl peroxide are dissolved in ethyl acetate to obtain the mixed solution I;

[0034] b) In the four-port reactor, add polytetrahydrofuran diol, 1,4...

Embodiment 3

[0039] A waterborne polyurethane-epoxy resin modified by SIS derivatives, which consists of 60.0 parts of hexamethylene diisocyanate, 10.0 parts of epoxy resin, 7.5 parts of SIS derivatives, and 0.5 parts of benzoyl peroxide in parts by weight. 60.0 parts of polycaprolactone diol, 6.0 parts of neopentyl glycol, 6.0 parts of dimethylolpropionic acid, 3.0 parts of hydroxyethyl acrylate, 0.05 parts of dibutyltin dilaurate, 40.0 parts of acetone, ethyl acetate 15.0 parts, 9.5 parts of dimethylethanolamine, 5.0 parts of polyvinyl alcohol, and 300.0 parts of deionized water.

[0040] A kind of preparation method of SIS derivative modified waterborne polyurethane-epoxy resin in the present embodiment, comprises the following steps:

[0041] a), in the titration tank, according to the weight of the formula, the SIS derivative and benzoyl peroxide are dissolved in ethyl acetate to obtain the mixed solution I;

[0042] b) In the four-port reactor, add polycaprolactone diol, neopentyl g...

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Abstract

The invention relates to an SIS derivative-modified waterborne polyurethane-epoxy resin and a preparation method of the SIS derivative modified waterborne polyurethane-epoxy resin. The SIS derivative-modified waterborne polyurethane-epoxy resin disclosed by the invention is prepared from the following components in parts by weight: 50.0 to 80.0 parts of diisocyanate, 10.0 to 30.0 parts of epoxy resin, 6.0 to 12.0 parts of an SIS derivative, 0.2 to 0.8 part of benzoyl peroxide, 30.0 to 70.0 parts of oligomer polyol, 2.0 to 8.0 parts of polyol, 4.5 to 10.0 parts of dimethylolpropionic acid, 1.5 to 4.0 parts of hydroxyethyl acrylate, 0.01 to 0.1 part of dibutyltin dilaurate, 15.0 to 60.0 parts of acetone, 12.0 to 30.0 parts of ethyl acetate, 3.0 to 15.0 parts of a neutralizing agent, 2.0 to 6.0 parts of polyvinyl alcohol and 180.0 to 350.0 parts of deionized water, wherein the SIS derivative is a butyl methacrylate grafted SIS elastomer and is prepared by grafting via a solution method. The SIS derivative-modified waterborne polyurethane-epoxy resin prepared by the invention is high in crosslinking density, has excellent adhesive force, flexibility and wear resistance, does not need to be additionally added with an anti-sagging agent, and has good anti-sagging property and bending resistance.

Description

technical field [0001] The invention relates to a modified waterborne polyurethane-epoxy resin, in particular to a SIS derivative modified waterborne polyurethane-epoxy resin and a preparation method thereof, belonging to the technical field of special waterborne resins. Background technique [0002] The traditional single material is far from meeting the market's increasingly high performance requirements. Polyurethane resin is formed by the reaction of oligomer polyols, small molecule polyols, polyisocyanates and chain extenders. The reaction raw materials and process factors have a great influence on the morphology of polyurethane materials. Polyurethane has good solvent resistance and abrasion resistance, so it is widely used in coatings, adhesives, foam plastics, inks and rubber, etc. , Limiting the scope of application and further development of waterborne polyurethane. Therefore, it is very important to enhance the comprehensive performance of waterborne polyurethan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/16C08L51/04C08L29/04C08G18/67C08G18/66C08G18/42C08G18/44C08G18/48C08G18/32C08G18/34C09D175/16C09D7/65C09D151/04C09D129/04
CPCC08L75/16C08G18/672C08G18/6659C08G18/6692C08G18/58C08G18/4045C08G18/3206C08G18/348C08G18/3212C08G18/44C08G18/4854C08G18/4277C08G18/4833C09D175/16C09D7/65C08L51/04C08L29/04C08G18/0823
Inventor 张武康伦国姚东生谢正章彭程
Owner UNION FOSHAN CHEM
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