Secondary aromatic diamines as curing agents in polyurethane and

Details Secondary aromatic diamines as curing agents in polyurethane and Secondary aromatic diamines as curing agents in polyurethane and

1987-03-20

1989-01-31

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 78, C08G 1832, C08G 1848, C08G 1885, C08G 1886

Patent

active

048016748

ABSTRACT:
N,N'-disubstituted diamines 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 diamines 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.

REFERENCES:
patent: 4152510 (1979-05-01), Blahak et al.
patent: 4324867 (1982-04-01), Patton, Jr. et al.
patent: 4495081 (1985-01-01), Vanderhider et al.
patent: 4552945 (1985-11-01), Alberino et al.
patent: 4578446 (1986-03-01), House et al.
patent: 4667009 (1987-05-01), Ewen et al.

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