Epoxy-polyurethane anti-corrosive paint and preparation method thereof

A technology of anti-corrosion coating and polyurethane, applied in the direction of polyurea/polyurethane coating, anti-corrosion coating, coating, etc., can solve the problems of easy wear and damage, poor appearance quality, affecting the appearance quality and appearance image of metal plates, etc.

Inactive Publication Date: 2010-06-30
李岳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current coatings used for spraying metal surfaces have unsatisfactory spraying effects, and there are defects such as poor appeara

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0006] The product of the addition reaction of 1mol bisphenol A and 4mol epichlorohydrin - bisphenol A glycidyl ether (epoxy equivalent 371) 85.5kg, bisphenol A glycidyl ether (epoxy equivalent 188) 14.5kg, bisphenol A 27.5kg, N-methylethanolamine 5kg; B consists of polyether polyol resin I 100kg, polyisocyanate 64kg, methyl isobutyl ketone 50kg, coal tar 50kg, talcum powder 50kg.

[0007] The preparation method of polyester polyol A is: the product of 1mol bisphenol A and 4mol epichlorohydrin addition reaction-bisphenol A glycidyl ether (epoxy equivalent 371) 85.5kg, the glycidyl ether of bisphenol A ( Epoxy equivalent 188) 14.5kg, bisphenol A 27.5kg mixed, with sodium hydroxide as catalyst, heated and stirred at 200°C for 10h to obtain high molecular weight epoxy resin (epoxy equivalent 2050), and then added N-formazol 5 kg of ethanolamine was stirred and reacted at 110° C. for 3 h to obtain polyether polyol resin I (hydroxyl equivalent 356). In 100kg of the obtained polyet...

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Abstract

The invention relates to an epoxy-polyurethane anti-corrosive paint and a preparation method thereof, and the epoxy-polyurethane anti-corrosive paint comprises the components in parts by weight: polyester polyol A and paint B, wherein A comprises 85.5 parts of bisphenol A glycidyl ether (with the epoxy equivalent weight of 371) which is the product of addition reaction between 1mol of bisphenol A and 4mol of epoxy chloropropane, 14.5 parts of bisphenol A glycidyl ether (with the epoxy equivalent weight of 188), 27.5 parts of bisphenol A and 5 parts of N-methylethanolamine; and B comprises 100 parts of polyether polyol resin, 64 parts of polyisocyanate, 50 parts of methylisobutylketone, 50 parts of coal tar and 50 parts of talcum powder. The paint has excellent corrosion resistance and flexibility, and especially excellent organic solvent dissolubility and mixed solubility with asphalt or other substitutions, thus being suitable for being taken as anti-corrosive paint and heavy-duty coating.

Description

Technical field: [0001] The invention belongs to a coating and a preparation method thereof, in particular to an epoxy-polyurethane anticorrosion coating and a preparation method thereof. Background technique: [0002] The current coatings used for spraying metal surfaces have unsatisfactory spraying effects, and have defects such as poor appearance quality, easy division, easy wear damage, dull luster, etc., thereby affecting the appearance quality and appearance image of the metal plate. Invention content: [0003] The object of the present invention is to overcome the deficiencies in the above-mentioned prior art, and provide a kind of epoxy-polyurethane anticorrosion coating that is easy to spray, has good application effect, and has a bright surface after spraying. The technical scheme of the present invention is: be divided into polyester polyol A and coating B two parts, A is made of the product of 1mol bisphenol A and 4mol epichlorohydrin addition reaction-bispheno...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D5/08C08G18/58
Inventor 李岳
Owner 李岳
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