Curing agents in polyurethane manufacture

Details Curing agents in polyurethane manufacture Curing agents in polyurethane manufacture

C - Chemistry, Metallurgy

08

G

402/142

C08G 18/10 (2006.01) C08G 18/32 (2006.01) C08G 18/80 (2006.01)

Patent

CA 1248280

"CURING AGENTS IN POLYURETHANE MANUFACTURE" ABSTRACT Polyurethanes may be conveniently made by curing disocyanate- terminated urethane prepolymers with a N,N'-dialkylmethylenedianiline. The diamine N,N'-di(2-butyl)-4,4'-methylenedianiline is a particularly useful diamine. The resulting polyurethanes often are thermoplastic rather than thermosetting, making them especially useful as coatings, adhesives, and sealants. Such secondary aromatic diamines have acceptable pot lives and afford products with a variety of properties.

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