RAPID CURE THERMOSETTING FUNCTIONAL POWDER COATINGS

摘要

Thermosetting powder coating compositions which are rapid curing at elevated temperatures and which exhibit extended shelf lives in the powder state are described. The powder coating compositions have utility as functional protective coatings against heat, corrosion and moisture for materials such as steel pipelines, steel reinforcing bar, deep well petroleum drilling pipes and electrical cables. The powder coatings comprise 1,3phenylenebis-2-oxazoline in combination with any two coreactants chosen from the group consisting of a nucleophile such as a phenolic compound, an electrophile such as a diacid dianhydride, and an epoxy resin.