N,N'-dialkylphenylenediamines as curing agents in polyurethane a

Details N,N'-dialkylphenylenediamines as curing agents in polyurethane a N,N'-dialkylphenylenediamines as curing agents in polyurethane a

1988-10-31

1990-08-14

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

528 67, 528 76, 528 77, 528 81, 528 83, 528 85, C08G 1832

Patent

active

049488619

ABSTRACT:
N,N'-dialkyl- and diarylphenylenediamines are effective curing agents in combination with other polyamines and polyols in reaction injection molding for a diverse class of polyisocyanates. The diamines provide a broad spectrum of cure times, as well as giving elastomers an interesting and useful diversity of properties. Such polyamines may be used as a constituent in a blend of polyamines as the isocyanate-reactive component, in which case the elastomer may be viewed as predominantly a polyurea, or as a constituent in a blend with polyols, in which case the elastomer may be viewed as an elastomer with both urethane and urea segments.

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