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Anticorrosive coating composition

An anti-corrosion coating and anti-corrosion pigment technology, applied in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of insufficient corrosion resistance, poor corrosion resistance, poor chemical resistance, etc., and improve corrosion resistance. performance, excellent corrosion resistance

Active Publication Date: 2009-10-21
KANSAI PAINT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the coating film formed by the coating composition disclosed in Patent Document 3 exhibits some corrosion resistance, it exhibits poor corrosion resistance and poor chemical resistance compared with a coating composition prepared using a chromium-based pigment, Exhibits particularly unsatisfactory corrosion resistance in the end face portion

Method used

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  • Anticorrosive coating composition

Examples

Experimental program
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Effect test

preparation example Construction

[0037] The acrylic resin used as the flexible organic part in the preparation of the modified resin (A) may include an acrylic resin having a reactive group reactive with a bisphenol epoxy resin. The acrylic resin may include a modified acrylic resin such as, for example, a urethane-modified acrylic resin. The reactive groups may include carboxyl, amino, hydroxyl and the like. Among these, carboxyl group-containing acrylic resins are preferable.

[0038] The carboxyl group-containing acrylic resin may include resins obtained by copolymerizing carboxyl group-containing polymerizable unsaturated monomers with other polymerizable unsaturated monomers according to known processes such as solution polymerization process, suspension The polymerization process, bulk polymerization process, etc. are preferably resins obtained by a solution polymerization process from the viewpoint of ease of control of polymerization conditions. The other polymerizable unsaturated monomers may inclu...

Embodiment

[0125] The present invention will be described more specifically with reference to the following Preparations and Examples. The present invention should not be limited to the following examples. Hereinafter, "parts" and "%" represent "parts by weight" and "% by weight", respectively.

Synthetic example 1

[0127] Prepare flexible acrylic resin AC1 solution:

[0128] 65.0 parts of SWASOL 1000 (trade name, sold by Maruzen Petro Chemicals Co., Ltd., a high-boiling aromatic petroleum solvent) was charged into a reactor equipped with a stirrer, a condenser, a thermometer, a nitrogen inlet, and a dropping device, followed by While stirring, the temperature inside the reactor was raised to 110°C, and the following monomer-containing starting material mixture was added dropwise. The dropping process continued for more than 3 hours while maintaining the temperature at 110°C.

[0129] Styrene 18.4 parts

[0130] 31.2 parts of methyl methacrylate

[0131] 37.5 parts of n-butyl acrylate

[0132] 2-hydroxyethyl acrylate 11.0 parts

[0133] Acrylic acid 1.9 parts

[0134] 1.7 parts of 2,2'-azobisisobutyronitrile

[0135] After completion of dropping, 0.5 part of 2,2'-azobisisobutyronitrile was added, followed by reaction at this temperature for 2 hours, and 35.0 parts of cyclohexanone wa...

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Abstract

The invention provides an anticorrosive coating composition, comprisng (A) flexible organic modified bisphenol epoxy resin, prepared from 5 to 15 weight% of flexible organic part and 50 to 55 weight% of bisphenol epoxy resins by reacting, (B)solidifying agent and (C)anticorrosive paint, wherein the flexible organic part is selected from C4 to C36 fatty polybasic acid, acrylic resin with the glass transition temperature of -20 to 50 DEG C and polyester resin with the glass transition temperature of -20 to 50 DEG C, the anticorrosive paint(C) is preferably non-chromium anticorrosive paint mixture containing vanadium compound and silicon-containing compound such as metal silicates, phosphates and the like.

Description

technical field [0001] The present invention relates to a coating composition exhibiting excellent corrosion resistance and a metal sheet coated by using the coating composition, and more particularly to a coating composition and a metal sheet coated by using the coating composition. Coated metal sheet, which is effective not only for improving corrosion resistance of unworked flat parts, but also for improving corrosion resistance of processed parts and end faces in said coated metal sheet, even when the coating composition does not contain chromium efficient. Background technique [0002] Pre-coated metal sheets, such as pre-coated steel sheets coated by coil coating, have been widely used in the prior art as home-related articles, such as, for example, for roofs, walls, shutters, garages, etc. Building materials for building structures, various household appliances, instrument panels, refrigeration showcases, steel furniture, kitchen equipment, etc. [0003] The home-re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/02C09D5/08C09D7/12B32B15/04B32B33/00
Inventor 坂本明久松田英树
Owner KANSAI PAINT CO LTD
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