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

1987-12-09

1989-02-21

Anderson, Harold D.

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 80, 528 81, 528 83, 528 84, 528 85, C08G 1832, C08G 1830, C08G 1834

Patent

active

048066168

ABSTRACT:
N,N'-dialkyl- and diaylphenylenediamines 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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patent: 4736009 (1988-04-01), House et al.
patent: 4757096 (1988-07-01), Berthevas et al.

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