A kind of anticorrosion coating primer and topcoat composition

A technology of anti-corrosion coatings and compositions, applied in anti-corrosion coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problems of insufficient chemical resistance and affecting curing speed, etc., achieve excellent construction performance, prevent internal stress corrosion, penetration The effect of wetting solution

Active Publication Date: 2016-12-28
江苏国松特种涂料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of polyaspartic acid in coating compositions often brings some disadvantages, including insufficient chemical resistance, and the choice of polyaspartic acid can affect the speed of cure

Method used

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  • A kind of anticorrosion coating primer and topcoat composition

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Experimental program
Comparison scheme
Effect test

Embodiment 1）

[0041] (1) Primer preparation A component: weigh 2.2 kg of hydroxyl acrylic resin; 0.46 kg of polyaspartic acid resin; 0.05 kg of dispersant; 0.5 kg of washing water, polymethacrylate: xylene volume ratio 1:1 mixture; anti-settling agent 0.1kg organic bentonite and gas phase method sio 2 0.05 kg each; 0.06 kg leveling agent; 2 kg antirust pigment; 0.1 kg coloring pigment; 1 kg titanium dioxide; 0.4 kg polymethacrylate; 1 kg 1250 mesh talcum powder; 0.6 kg was emulsified by an emulsifier, and then stirred evenly by a high-speed mixer to obtain component A.

[0042] Primer B component aliphatic polyisocyanate 1kg is Bayer N3390.

[0043] (2) Component A of topcoat: weigh 3 kg of hydroxyacrylic resin; 1 kg of polyaspartic acid resin; 0.05 kg of dispersant; : 1 mixture; anti-settling agent 0.1 kg is organic bentonite and gas phase method sio 2 0.05 kg each; 0.15 kg leveling agent; 0.1 kg polymethacrylate; 3 kg titanium dioxide; 0.5 kg 1250 mesh sericite; 0.8 kg barium sulfate; ...

Embodiment 2）

[0046] (1) Primer preparation A component: weigh 2.2 kg of hydroxyl acrylic resin; 0.46 kg of polyaspartic acid resin; 0.05 kg of dispersant; 0.5 kg of washing water, polymethacrylate: xylene volume ratio 1:1 mixture; anti-settling agent 0.1kg organic bentonite and gas phase method sio 20.05 kg each; 0.06 kg leveling agent; 2 kg antirust pigment; 0.1 kg coloring pigment; 1 kg titanium dioxide; 0.4 kg polymethacrylate; 1 kg 1250 mesh talcum powder; 0.6 kg; when the temperature is low in autumn and winter, component A also includes 1.7 parts of catalyst, including organotin catalyst 1%TT 0.1 kg from Deqian Company, modified amine catalyst Shanghai Huarong Chemical Co., Ltd. 5%PP 0.07 kg, passed through an emulsifier After emulsification, stir evenly with a high-speed mixer to obtain component A.

[0047] Primer B component aliphatic polyisocyanate 1kg is Bayer N3390.

[0048] (2) Component A of topcoat: weigh 3 kg of hydroxyacrylic resin; 1 kg of polyaspartic acid resin; 0.05 ...

Embodiment 3）

[0051] (1) Primer preparation A component: weigh 1.5 kg of hydroxyl acrylic resin; 0.2 kg of polyaspartic acid resin; 0.02 kg of dispersant; 0.2 kg of washing water, polymethacrylate: xylene volume ratio 1:1 mixture; anti-sedimentation agent 0.05kg organic bentonite and gas phase method sio 2 0.025 kg each; 0.03 kg leveling agent; 1 kg antirust pigment; 0.05 kg coloring pigment; 0.55 kg titanium dioxide; 0.4 kg polymethacrylate; 0.6 kg was emulsified by an emulsifier, and then stirred evenly by a high-speed mixer to obtain component A.

[0052] Primer B component aliphatic polyisocyanate 1kg is Bayer N3390.

[0053] (2) Component A of topcoat: weigh 1kg of hydroxyl acrylic resin; 0.5kg of polyaspartic acid resin; 0.01kg of dispersant; 1 mixture; anti-sedimentation agent 0.06 kg is organic bentonite and gas phase method sio 2 Each 0.03 kg; leveling agent 0.012 kg; solvent polymethacrylate 0.1 kg; titanium dioxide 1 kg; filler 1250 mesh sericite 0.6kg; filler barium sulfate 0...

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Abstract

The invention relates to a primer composition for anti-corrosion coatings, which comprises two components A and B, wherein the A component comprises by weight: 15-30 parts of hydroxyl acrylic resin; 2-10 parts of polyaspartic acid resin; Pigment: 10-50 parts of anti-rust pigment, 0.5-3 parts of coloring pigment, 5.5-23 parts of titanium dioxide; additives: 0.1-2 parts of dispersant, 1-10 parts of washing machine water, 0.1-2 parts of anti-settling agent, Leveling agent 0.1~1 part; solvent 1~10 parts; filler 10~30 parts; B component is aliphatic polyisocyanate 5~30 parts. The product of the present invention has a three-dimensional network structure. After the introduction of urea group, it has super acid, alkali and salt chemical resistance; the precise proportion control of each component in the formula makes the product have excellent UV resistance and outdoor performance, which solves the problem of Due to the difficult construction characteristics of urea-based coatings, no special equipment is required, conventional construction has excellent construction performance.

Description

technical field [0001] The invention relates to a coating composition, in particular to a primer and topcoat composition for anti-corrosion coatings. Background technique [0002] Before and after World War II, with the emergence of a series of high polymers such as epoxy resin, chlorinated rubber resin, alkyd resin, and phenolic resin, the types and properties of heavy-duty anti-corrosion coatings have undergone qualitative changes. The corresponding anti-corrosion theory and Construction technology has also been fully developed. [0003] In the past 30 years, along with the process of my country's reform and opening up, my country's heavy-duty anti-corrosion coatings have also achieved full development. It seems stretched, so it is still important to develop a coating with strong applicability, high weather resistance and chemical resistance! [0004] At present, the main types of heavy-duty anti-corrosion coatings are as follows: [0005] Chlorinated polymers are mainly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D175/02C09D7/12C09D5/08
Inventor 周伟松曹强
Owner 江苏国松特种涂料有限公司
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