Polyurethane curing agents

Details Polyurethane curing agents Polyurethane curing agents

1976-05-11

1979-01-23

Person, Sandra M.

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 62, 528 28, C08G 7104

Patent

active

041360923

ABSTRACT:
Isocyanate-terminated prepolymers can be cured with di- and triamino-s-triazines of formula ##STR1## where R is ##STR2## --S--R.sub.5 ; --O--R.sub.6 or ##STR3## where at least one of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is hydrogen; R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7 and R.sub.8 are hydrogen or an optionally substituted aromatic or aliphatic group and

REFERENCES:
patent: 3328321 (1967-06-01), Wismer et al.
patent: 3399151 (1968-08-01), Kaiser

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