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.
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[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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