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Water-based PU (Poly Urethane) curing agent and preparation method thereof

A curing agent, water-based technology, applied in the field of water-based PU curing agent and its preparation, can solve the problems of high production cost, poor water dispersibility, poor storage stability, etc., and achieve the effect of low equipment cost, low VOC content, and VOC reduction.

Inactive Publication Date: 2015-02-18
GUANGDONG VALSPAR CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the product performance of PU type is the closest to that of oil-based paint, but there are problems of high production cost, poor water dispersibility and poor storage stability.

Method used

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  • Water-based PU (Poly Urethane) curing agent and preparation method thereof
  • Water-based PU (Poly Urethane) curing agent and preparation method thereof
  • Water-based PU (Poly Urethane) curing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A water-based PU curing agent is prepared from the following components by weight:

[0026] 34 parts of HDI trimer, 4 parts of DMPA (dimethylol propionic acid), 7 parts of ethylene glycol monobutyl ether, 4 parts of PMA (propylene glycol methyl ether acetate), 5 parts of methyl ethyl ketone oxime, 46 parts of deionized water.

[0027] A kind of preparation method of aqueous PU solidifying agent, carries out according to the following steps:

[0028] Put 34Kg of HDI trimer, 4Kg of DMPA, and 7Kg of ethylene glycol monomethyl ether into the reactor, and 4Kg of PMA; then heat the reactor, and control the heating temperature to 70°C. Stir the material in the reactor to fully react the material in the reactor to form a uniform solution; then add 5Kg of methyl ethyl ketone oxime, control the heating temperature to 70°C, and stir the material in the reactor during the heating process to make the material in the reactor The substances fully react to form a uniform solution; sto...

Embodiment 2

[0031] A water-based PU curing agent is prepared from the following components by weight:

[0032] 32 parts of HDI trimer, 3 parts of DMPA (dimethylol propionic acid), 8 parts of ethylene glycol monobutyl ether, 4 parts of PMA (propylene glycol methyl ether acetate), 6 parts of methyl ethyl ketone oxime, 47 parts of deionized water.

[0033] A kind of preparation method of aqueous PU solidifying agent, carries out according to the following steps:

[0034] Put 32Kg of HDI trimer, 3Kg of DMPA, 8Kg of ethylene glycol monomethyl ether, and 4Kg of PMA into the reactor; then heat the reactor, and control the heating temperature to 80°C. Stir the material in the reactor to fully react the material in the reactor to form a uniform solution; then add 6Kg of methyl ethyl ketone oxime, control the heating temperature to 80°C, and stir the material in the reactor during the heating process to make the material in the reactor The substance fully reacts to form a uniform solution; stop he...

Embodiment 3

[0037] A water-based PU curing agent is prepared from the following components by weight:

[0038] 30 parts of HDI trimer, 2 parts of DMPA (dimethylol propionic acid), 12 parts of ethylene glycol monobutyl ether, 4 parts of PMA (propylene glycol methyl ether acetate), 5 parts of methyl ethyl ketone oxime, 45 parts of deionized water.

[0039] A kind of preparation method of aqueous PU solidifying agent, carries out according to the following steps:

[0040] Equipped with 100Kg of the water-based PU curing agent of the present invention, which is prepared from the following components by weight:

[0041] Put 30Kg of HDI trimer, 2Kg of DMPA, 12Kg of ethylene glycol monomethyl ether, and 4Kg of PMA into the reactor; then heat the reactor, and control the heating temperature to 75°C. Stir the material in the reactor to fully react the material in the reactor to form a uniform solution; then add 7Kg of methyl ethyl ketone oxime, control the heating temperature to 75°C, and stir th...

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Abstract

The invention discloses a water-based PU (Poly Urethane) curing agent. The water-based PU curing agent is prepared from the following components in parts by weight: 20-40 parts of an HDI (Hexamethylene Diisocyanate) tripolymer, 1-10 parts of DMPA, 5-15 parts of ethylene glycol monobutyl ether, 1-10 parts of PMA (Propylene Glycol Monomethyl), 1-10 parts of methyl ethyl ketoxime and 40-60 parts of deionized water. The invention also discloses a preparation method of the water-based PU curing agent. The preparation method of the water-based PU curing agent comprises the following steps: respectively putting the HDI tripolymer, DMPA, ethylene glycol monobutyl ether and PMA into a reaction kettle, heating and uniformly stirring to obtain a solution; adding methyl ethyl ketoxime, heating and uniformly stirring to obtain a solution; stopping heating, cooling, adding deionized water, uniformly stirring to obtain a solution, packaging and storing the solution in a storehouse. The water-based PU curing agent prepared by the method has the characteristics of being low in content of VOC (Volatile Organic Compounds) and high in storage stability; the preparation method has the characteristics of being low in equipment cost and simple to operate; a large quantity of toxic materials are not required in the treatment process.

Description

technical field [0001] The invention relates to a curing agent, in particular to a water-based PU curing agent and a preparation method thereof. The curing agent is suitable for use on surfaces of objects such as wooden furniture and automobiles. Background technique [0002] In recent years, with the development of society and the improvement of living standards, traditional oil-based paints use a large amount of volatile organic solvents (VOCs), which consume a lot of energy and are toxic, causing health hazards to paint constructors and users, as well as to the environment. It also causes pollution. In order to solve this problem, governments of various countries have begun to pay attention to the use of non-toxic, non-polluting environmentally friendly coatings. Environmentally friendly coatings refer to coatings that do not contain toxic and polluting organic volatiles (VOC) or refer to the allowed range of VOC in the regulations. A touch of paint. Governments of vario...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/80C08G18/79C08G18/34C08G18/30C09D7/12
CPCC08G18/8048C08G18/8064C08G18/8077C08G18/8096
Inventor 黄宏亭谢志超黎司华蔡森王悦辉
Owner GUANGDONG VALSPAR CHEM IND