APAO-modified polyurethane waterborne resin and preparation method thereof

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

Active Publication Date: 2020-02-04
UNION FOSHAN CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above invention is aimed at the modification of water-based polyurethane resin, and its performance has been improved to a certain extent, but its anti-sagging performance is poor, and its water resistance and adhesion are insufficient

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] An APAO modified polyurethane water-based resin, which consists of the following formula in parts by weight: 42.0 parts of isophorone diisocyanate, 32.0 parts of polytetrahydrofuran diol, 7.0 parts of APAO grafted with hydroxyethyl acrylate, and 8.0 parts of butanediol 2.5 parts of trimethylolpropane, 3.5 parts of dimethylolpropionic acid, 0.8 parts of hydroxypropyl acrylate, 0.06 parts of dibutyltin dilaurate, 5.0 parts of ethanol, 4.5 parts of ethylenediamine, 6.8 parts of triethylamine, 150.0 parts of deionized water.

[0026] A kind of preparation method of APAO modified polyurethane aqueous resin in the present embodiment, comprises the following steps:

[0027] a) In the multifunctional reactor, add polytetrahydrofuran diol, butanediol, trimethylolpropane, and dimethylolpropionic acid in sequence according to the weight of the formula, raise the temperature to 110°C, and dehydrate under vacuum for 1.5h ;

[0028] b) Cool down to 65°C, add isophorone diisocyanate...

Embodiment 2

[0031] An APAO modified polyurethane water-based resin, in parts by weight, consists of the following formula: 35.0 parts of toluene diisocyanate, 35.0 parts of polycarbonate diol, 6.0 parts of APAO grafted with hydroxyethyl acrylate, and 7.0 parts of neopentyl glycol , 4.0 parts of dipropylene glycol, 4.0 parts of dimethylol propionic acid, 0.7 parts of hydroxypropyl acrylate, 0.06 parts of dibutyltin dilaurate, 6.8 parts of ethanol, 4.5 parts of ethylenediamine, 5.0 parts of ammonia water, 140.0 parts of deionized water share.

[0032] A kind of preparation method of APAO modified polyurethane aqueous resin in the present embodiment, comprises the following steps:

[0033] a) In the multifunctional reactor, add polycarbonate diol, neopentyl glycol, dipropylene glycol, and dimethylol propionic acid in sequence according to the weight of the formula, raise the temperature to 105°C, and dehydrate under vacuum for 2.0 h;

[0034] b) Cool down to 70°C, add toluene diisocyanate ...

Embodiment 3

[0037] An APAO modified polyurethane water-based resin, which consists of the following formula in parts by weight: 28.0 parts of hexamethylene diisocyanate, 35.0 parts of polyether diol, 4 parts of APAO grafted with hydroxyethyl acrylate, and 8.8 parts of butanediol 4.0 parts of dimethylolpropionic acid, 0.6 parts of hydroxypropyl acrylate, 0.05 parts of dibutyltin dilaurate, 6.0 parts of ethanol, 4.0 parts of ethylenediamine, 5.0 parts of triethylamine, and 130.0 parts of deionized water.

[0038] A kind of preparation method of APAO modified polyurethane aqueous resin in the present embodiment, comprises the following steps:

[0039]a) In the multifunctional reactor, add polyether diol, butanediol, and dimethylolpropionic acid in sequence according to the weight of the formula, raise the temperature to 110°C, and dehydrate under vacuum for 1.5h;

[0040] b) Cool down to 60°C, add hexamethylene diisocyanate and pass through N 2 , add the formula amount of dibutyltin dilaura...

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PUM

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Abstract

The invention relates to an APAO-modified polyurethane waterborne resin and a preparation method thereof. The APAO-modified polyurethane waterborne resin comprises, by weight, 25.0-60.0 parts of diisocyanate, 20.0- 45.0 parts of an oligomer polyol, 4.0-10.0 parts of hydroxyethyl acrylate-grafted APAO, 6.0-15.0 parts of a chain extender, 2.5-5.0 parts of dimethylolpropionic acid, 0.5-1.2 parts of hydroxypropyl acrylate, 0.03-0.1 part of dibutyltin dilaurate, 2.5-10.0 parts of ethanol, 3.0-6.0 parts of ethylenediamine, 2.5-10.0 parts of a neutralizer and 120.0-180.0 parts of deionized water. TheAPAO-modified polyurethane waterborne resin has the characteristics of excellent adhesive force, water resistance, aging resistance, salt fog resistance and good sagging resistance, and can be used for waterborne wood coatings, waterborne industrial coatings, waterproof coatings and the like.

Description

technical field [0001] The invention relates to a modified polyurethane water-based resin, in particular to an APAO modified polyurethane water-based resin and a preparation method thereof, belonging to the technical field of water-based resin synthesis. Background technique [0002] At present, a large number of polyurethane coatings used are mainly solvent-based, but with the enhancement of people's awareness of environmental protection and the establishment of environmental regulations, the traditional solvent-based chemicals of volatile organic compounds (VOC) and harmful air pollutants (HAP) Emissions are increasingly restricted. [0003] The water-based technology for preparing polyurethane, using water instead of organic solvents, not only improves the safety of production and construction, avoids the flammability and toxicity of organic solvents, but also reduces or eliminates the environmental problems caused by the volatilization of organic solvents during the curi...

Claims

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Application Information

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IPC IPC(8): C08G18/67C08G18/66C08G18/32C08G18/34C08G18/44C08G18/48C08G18/63C08G18/40C09D175/14
CPCC08G18/3206C08G18/3228C08G18/348C08G18/4072C08G18/44C08G18/4825C08G18/4854C08G18/638C08G18/672C09D175/14C08G18/6692C08G18/6659
Inventor 张武谢义鹏康伦国姚东生
Owner UNION FOSHAN CHEM
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