Water-based amino stoving varnish and preparation method thereof

An amino baking varnish, water-based technology, applied in the direction of polyurea/polyurethane coating, epoxy resin coating, polyester coating, etc., can solve the problems of organic solvent emission pollution, endangering the health of operators, and hidden dangers of environmental safety, etc., to solve the problem of easy hydrolysis , Construction is convenient and fast, and the effect of convenient construction

Active Publication Date: 2016-12-14
HEBEI CHENYANG INDAL & TRADE GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, paints generally use organic solvents as raw materials. This kind of paint will not only cause a large amount of organic solvents to discharge and cause pollution, but also endanger the health of operators, which has laid a major hidden danger for environmental safety issues.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A water-based amino baking varnish, the water-based amino baking varnish is made of the following raw material ratios, calculated by weight percentage: 25% water-based polyester resin, 5% water-based epoxy resin, 9% water-based amino resin, 35% Deionized water, 2% pH regulator, 0.3% wetting agent, 0.4% defoamer, 0.5% dispersant, 2% co-solvent, 17.1% pigment and filler, 2% nano-alumina , 0.5% lithium magnesium silicate, 0.4% thickener, 0.8% leveling agent.

[0034] The preparation method of the water-based polyester resin is: add the water-based branched-chain polyester resin with an acid value of 50 mgKOH / g, add glycidyl tertiary carbonic acid ester, carry out copolymerization modification at 120 ° C for 0.5 h, until the end point acid value is 40 mgKOH / g, and obtain Waterborne polyester resin. The mass ratio of water-based branched polyester resin to glycidyl tertiary carbonic acid ester is 8.5:1.

[0035] The preparation method of water-based epoxy resin is as follo...

Embodiment 2

[0043]A water-based amino baking varnish, the water-based amino baking varnish is made of the following raw material ratios, calculated as: 30% water-based polyester resin, 4% water-based epoxy resin, 7% water-based amino resin, 28.8% Deionized water, 1.5% pH adjuster, 0.4% wetting agent, 0.2% defoamer, 0.7% dispersant, 1% co-solvent, 20% pigment and filler, 5% nano-alumina , 0.4% lithium magnesium silicate, 0.3% thickener, 0.7% leveling agent.

[0044] The preparation method of the water-based polyester resin is: add the water-based branched-chain polyester resin with an acid value of 60mgKOH / g, add glycidyl tertiary carbonic acid ester, carry out copolymerization modification at 130°C for 0.5h, until the end point acid value is 50mgKOH / g, and obtain Waterborne polyester resin. The mass ratio of water-based branched polyester resin to glycidyl tertiary carbonic acid ester is 9:1.

[0045] The preparation method of water-based epoxy resin is as follows: low-iodine value fatt...

Embodiment 3

[0049] A water-based amino baking varnish, the water-based amino baking varnish is made of the following raw material ratios, calculated as: 35% water-based polyester resin, 4.5% water-based epoxy resin, 10% water-based amino resin, 26% Deionized water, 2.5% pH adjuster, 0.3% wetting agent, 0.5% defoamer, 0.8% dispersant, 5% co-solvent, 11% pigment and filler, 3% nano-alumina , 0.3% lithium magnesium silicate, 0.5% thickener, 0.6% leveling agent.

[0050] The preparation method of the water-based polyester resin is: add the water-based branched-chain polyester resin with an acid value of 55 mgKOH / g, add glycidyl tertiary carbonic acid ester, carry out copolymerization modification at 140 ° C for 0.5 h, until the end point acid value is 45 mgKOH / g, and obtain Waterborne polyester resin. The mass ratio of water-based branched polyester resin to glycidyl tertiary carbonic acid ester is 8.8:1.

[0051] The preparation method of the water-based epoxy resin is as follows: low-iodi...

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Abstract

The invention discloses water-based amino stoving varnish and a preparation method thereof, and relates to the technical field of coating compositions. The water-based amino stoving varnish is prepared from, by weight, 25%-40% of water-based polyester resin, 4%-5% of water-based epoxy resin,7%-10% of water-based amino resin, 25%-35% of deionized water, 1.5%-2.5% of pH modifier, 0.3%-0.5% of wetting agent, 0.2%-0.6% of antifoaming agent, 0.5%-1% of dispersing agent, 1%-5% of cosolvent, 10%-20% of pigments and filler, 2%-5% of nanometer aluminum oxide, 0.3%-0.5% of magnesium lithium silicate, 0.3%-0.5% of thickener and 0.5%-0.8% of flatting agent through uniform mixing and stirring. The flatting agent is waterborne, environmentally friendly, good in stability, high in hardness, high in adhesive force, fast in drying, high in gloss retention, excellent in ageing resistance, good in water resistance, convenient to construct, low in cost and free of pollution.

Description

technical field [0001] The invention relates to the technical field of coating compositions. Background technique [0002] The ever-growing modern coating industry has higher and higher requirements for environmental protection. Reducing the discharge of organic solvents not only protects the environment, but also reduces costs, and is more secure for the health and safety of operators. [0003] At present, paints generally use organic solvents as raw materials. This kind of paint will not only cause a large amount of organic solvents to discharge and cause pollution, but also endanger the health of operators, laying a major hidden danger for environmental safety issues. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a water-based amino baking varnish and its preparation method. The water-based amino baking varnish is water-based and environmentally friendly, has good stability, high hardness, can be painted in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/00C09D163/00C09D161/20C09D7/00C09D7/12
CPCC08K2201/011C08L2205/02C08L2205/025C08L2205/035C09D167/00C08L63/00C08L61/20C08L83/12C08L83/04C08L75/04C08L33/02C08K13/02C08K3/36C08K3/34C08K2003/2227C08G18/0823C08G18/4263C09D163/00C09D175/06C09D7/43C09D7/45C09D7/47C09D7/61C08K3/22C08L75/06C08G59/1472C08K5/053C08L33/08C08L33/10C08L83/06C09D5/027C09D161/20C09D163/10C09D179/02C09D7/80
Inventor 郑齐程璐胡中源董立志郭晓猛王亚轩祁艳东
Owner HEBEI CHENYANG INDAL & TRADE GROUP CO LTD
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