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Anti-sagging APAO-modified alkyd resin water-based functional coating

A technology of water-based alkyd resin and alkyd resin, which is applied in the direction of polyester coating, coating, etc., can solve the problems of human body and ecological environment, poor anti-sag performance, insufficient water resistance, etc., and achieve good mechanical properties, High hardness and good water resistance

Active Publication Date: 2020-02-11
UNION FOSHAN CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Traditional coatings are mostly solvent-based and contain a large amount of organic solvents. During the construction process, the organic solvents evaporate and diffuse into the atmosphere with time, which has a serious impact on the human body and the ecological environment.
The new regulations on VOC content limits implemented on January 1, 2010 have had a huge impact on the traditional coatings market. From the perspective of sustainable development of the coatings industry, traditional solvent-based coatings can no longer meet the needs of the environment and the market.
It has good fullness, high hardness, good toughness, waterproof and scratch resistance, but it has disadvantages such as poor anti-sag performance, insufficient water resistance, and weak adhesion.

Method used

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  • Anti-sagging APAO-modified alkyd resin water-based functional coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] An APAO modified water-based alkyd resin A, consisting of the following formula in parts by weight: 26.0 parts of soybean oil, 7.5 parts of maleic anhydride grafted APAO, 28.0 parts of phthalic anhydride, 10.0 parts of terephthalic acid, and 18.0 parts of butanediol 24.0 parts of trimethylolpropane, 15.0 parts of xylene, 3.5 parts of n-heptanoic acid, 5.0 parts of dimethylolpropionic acid, 8.0 parts of triethylamine, and 130.0 parts of deionized water.

[0029] A kind of preparation method of APAO modified water-based alkyd resin A in the present embodiment, comprises the following steps:

[0030] a) In the multifunctional reaction kettle, add soybean oil, phthalic anhydride, terephthalic acid, butanediol, trimethylolpropane, dimethylol propionic acid and xylene in sequence according to the weight of the formula, and stir at a low speed Access to N 2 , to remove the O in the reactor 2 ;

[0031] b) Heat up to 110°C, keep it warm for 0.5h, remove free water, quickly r...

Embodiment 2

[0034] An APAO modified water-based alkyd resin B, consisting of the following formula in parts by weight: 20.0 parts of castor oil, 9.0 parts of maleic anhydride grafted APAO, 20.0 parts of maleic anhydride, 10.0 parts of adipic acid, trimethylol 22.0 parts of methyl propane, 9.5 parts of neopentyl glycol, 14.0 parts of xylene, 3.5 parts of n-heptanoic acid, 5.2 parts of dimethylolpropionic acid, 8.2 parts of triethylamine, and 115.0 parts of deionized water.

[0035] A kind of preparation method of APAO modified water-based alkyd resin B in the present embodiment comprises the following steps:

[0036] a) In the multifunctional reaction kettle, add castor oil, maleic anhydride, adipic acid, trimethylolpropane, neopentyl glycol, dimethylol propionic acid and xylene in sequence according to the weight of the formula, at a low speed N was introduced under stirring 2 , to remove the O in the reactor 2 ;

[0037] b) Heat up to 110°C, keep it warm for 0.5h, remove free water, q...

Embodiment 3

[0040] An anti-sagging APAO modified alkyd resin water-based functional coating, which consists of: 65.0 parts of APAO modified water-based alkyd resin A, 20.0 parts of silicon-modified water-based alkyd resin, 5.0 parts of propylene glycol, 0.5 parts of thickening agent, 3.0 parts of propylene glycol butyl ether, 3.0 parts of propylene glycol methyl ether acetate, 0.2 parts of defoaming agent, 0.3 parts of leveling agent, 0.2 parts of wetting agent, and 15.0 parts of deionized water.

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Abstract

The invention relates to an anti-sagging APAO-modified alkyd resin water-based functional coating. The coating comprises, by weight, 50.0-70.0 parts of APAO-modified water-based alkyd resin, 15.0-30.0parts of silicon-modified waterborne alkyd resin, 3.0-6.0 parts of an anti-freezing agent, 0.3-0.8 part of a thickener, 0.0-25.0 parts of a pigment filler, 0.0-0.8 part of a dispersing agent, 3.0-8.0parts of a coalescing agent, 0.1-0.4 part of an antifoaming agent, 0.2-0.5 part of a leveling agent, 0.1-0.5 part of a wetting agent and 8.0-20.0 parts of deionized water, wherein the APAO-modified waterborne alkyd resin is prepared from vegetable oil fatty acid, maleic anhydride-grafted APAO, polybasic acid, polyhydric alcohol, n-heptanoic acid, dimethylolpropionic acid and a neutralizer througha reaction. The anti-sagging APAO-modified alkyd resin water-based functional coating prepared by the invention has the characteristics of good sagging resistance, good adhesion, high hardness, goodmechanical properties, high crosslinking density, good water resistance and the like.

Description

technical field [0001] The invention relates to a modified alkyd resin water-based coating, in particular to an APAO modified alkyd resin water-based functional coating with anti-sagging, good water resistance and strong adhesion, and belongs to the technical field of water-based functional coatings. Background technique [0002] Traditional coatings are mostly solvent-based and contain a large amount of organic solvents. During the construction process, the organic solvents evaporate and diffuse into the atmosphere over time, which has a serious impact on the human body and the ecological environment. The new regulations on VOC content limits implemented on January 1, 2010 have had a huge impact on the traditional coatings market. From the perspective of sustainable development of the coatings industry, traditional solvent-based coatings can no longer meet the needs of the environment and the market. [0003] With the increasingly prominent environmental protection issues, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/08C08G63/91C08G63/49C08G63/78
CPCC09D167/08C08G63/918C08G63/48C08G63/78
Inventor 张武谢义鹏康伦国姚东生
Owner UNION FOSHAN CHEM
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