Patent ID: 9169403
Filing Date: 2015-10-27
Classification: C08G,C09D,D07B,Y10T

Abstract:
1. A powder coating composition for prestressed concrete (PC) strand coating, wherein the powder coating composition has a melt viscosity of 3000 to 15000 poise, the powder coating composition comprises an epoxy resin and a curing agent, the curing agent is a diglycidylether-modified bisphenol A, the curing agent has a phenolic hydroxy equivalent within a range of 500 to 800 g/eq, a mixing ratio of the epoxy resin and the curing agent, which is an equivalent ratio of a phenolic hydroxy equivalent of the curing agent to an epoxy equivalent of the epoxy resin, is within a range of 0.7/1.0 to 1.5/1.0, and the powder coating composition is suitable for coating PC strands.