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Baking type waterborne acrylic intermediate coating composition with anti-sagging characteristics and a preparation method thereof

A water-based acrylic and composition technology, used in anti-corrosion coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problems of coating sagging, destroying the thixotropic effect of polyurethane thickeners, and reducing coating resistance.

Active Publication Date: 2019-04-02
CHINA NAT OFFSHORE OIL CORP +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since a certain amount of co-solvent needs to be added to the baking paint system, the existence of co-solvent will destroy the thixotropic effect of polyurethane thickener, causing the intermediate coating to sag during the construction process, especially in the facade spraying construction Among them, the problem of paint sagging is more serious
On the other hand, the use of polyurethane thickeners will reduce the resistance of the coating

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] The baking-type water-based acrylic intermediate coating composition with anti-sag property of the present embodiment is made from the raw material of following quality: 35g hydroxyl-functionalized water-based acrylic resin, 2.8 gram Resimene 717, 2 gram ethylene glycol butyl ethers, 1 g propylene glycol methyl ether, 0.5 g dispersant EDAPLAN 490, 0.2 g leveling agent BYK-348, 0.1 g defoamer BYK-025, 0.05 g pH regulator N,N-dimethylethanolamine, 10 g titanium dioxide R 902+, 2 grams of pu carbon black, 30 grams of precipitated barium sulfate, 8 grams of water-based anti-sag polymer containing polyurea groups, 8.35 grams of deionized water.

[0055] The preparation method of the baking type water-based acrylic intermediate coating composition with anti-sag characteristic of the present embodiment may further comprise the steps:

[0056] 35 grams of hydroxyl-functionalized water-based acrylic resin, 2.8 grams of Resimene 717, 2 grams of ethylene glycol butyl ether, 1 gram...

Embodiment 2

[0066] The baking-type water-based acrylic intermediate coating composition with anti-sagging properties of the present embodiment is made from the raw materials of the following quality: 25 grams of hydroxyl functionalized water-based acrylic resin, 3.1 grams of CYMEL 325, 1.5 grams of ethylene glycol butyl ether , 0.9 g dispersant DISPERBYK 190, 0.1 g leveling agent BYK-348, 0.05 g defoamer BYK-1710, 0.02 g pH regulator N,N-dimethylethanolamine, 12 g titanium dioxide R 902+, 8 g Pu carbon black, 30 grams of precipitated barium sulfate, 10 grams of calcium carbonate, 3.5 grams of water-based anti-sag polymer containing polyurea groups, and 5.83 grams of deionized water.

[0067] The preparation method of the baking type water-based acrylic intermediate coating composition with anti-sag characteristic of the present embodiment may further comprise the steps:

[0068] 25 grams of hydroxyl functionalized water-based acrylic resin, 3.1 grams of CYMEL 325, 1.5 grams of ethylene gl...

Embodiment 3

[0078] The baking type waterborne acrylic intermediate coating composition with anti-sag characteristic of the present embodiment is made by the raw material of following quality:

[0079] 40 grams of hydroxyl functionalized waterborne acrylic resin, 2.2 grams of Resimene 717, 2.5 grams of butyl glycol ether, 3 grams of propylene glycol methyl ether, 0.1 grams of dispersant EDAPLAN 490, 0.1 grams of dispersant DISPERBYK 190, 0.35 grams of leveling agent BYK-348 , 0.2 grams of defoamer BYK-025, 0.1 grams of pH regulator N,N-dimethylethanolamine, 5 grams of titanium dioxide R 902+, 1 gram of pu carbon black, 20 grams of precipitated barium sulfate, 15 grams of polyurea groups A dollop of water-based anti-sag polymer and 10.45 grams of deionized water.

[0080] The preparation method of the baking type water-based acrylic resin primer composition with anti-sagging properties of the present embodiment may further comprise the steps:

[0081] 40 grams of hydroxyl functionalized wa...

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PUM

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Abstract

The invention relates to the technical field of coating, in particular to a baking type waterborne acrylic intermediate coating composition with anti-sagging characteristics and a preparation method thereof. The composition is mainly prepared from, by mass, 25-40% of hydroxyl functionalized waterborne acrylic resin, 2.2-3.1% of waterborne amino resin, 1.5-5.5% of a cosolvent A, 0.2-0.9% of a dispersant, 0.1-0.35% of a leveling agent, 0.05-0.2% of a defoamer, 0.02-0.1% of a pH regulator, 6-29% of pigment, 20-40% of a filler, 3.5-15% of a waterborne anti-sagging polymer containing a polyurea group and 5.83-10.45% of deionized water. The composition has excellent sagging resistance, adhesive force, waterproofness and resistance to stone crash.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a baking-type water-based acrylic intermediate coating composition with anti-sagging properties and a preparation method thereof. Background technique [0002] As a typical composite coating system, automotive coatings are generally divided into electrophoretic primer coating, intermediate coating coating, base color topcoat coating and varnish coating from bottom to top. As a transitional coating between the electrophoretic primer and the base coat, the middle coat has a certain filling property. Its main function is to fill the surface of the primer layer and improve the smoothness of the coating, so that the topcoat layer can be vividly reflected. The properties of softness, fullness and gloss are greatly improved, and the stone chip resistance of the coating is significantly improved. [0003] From the perspective of environmental protection, water-based coatings are the tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/08C09D161/20C09D175/02C09D5/08
CPCC08L2205/03C09D5/08C09D133/08C08L61/20C08L75/02
Inventor 王艳艳许飞张汉青刘汉功祝宝英胡中狄志刚张玉兴庄振宇刘明刘睿朱正宝左慧明周丽
Owner CHINA NAT OFFSHORE OIL CORP
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