Polyurethane prepared from diamine and prepolymer

Details Polyurethane prepared from diamine and prepolymer Polyurethane prepared from diamine and prepolymer

1981-04-03

1982-12-21

Cockeram, H. S.

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 68, C08G 1832

Patent

active

043650511

ABSTRACT:
A polyurethane prepared by reacting specifically identified substituted aromatic diamines with isocyanate-terminated prepolymer. Prepolymer is prepared by reacting polyisocyanate with polymeric polyol. Diamines are required to be selected from specified substituted butylbenzoates, benzonitriles or benzoates. The diamine curative is taught to enhance the processing of the prepolymer/diamine mixture for commercial application.

REFERENCES:
patent: 3681290 (1972-08-01), Mickel et al.
patent: 3929863 (1975-12-01), Blahak et al.
patent: 3991023 (1976-11-01), Blahak et al.
patent: 4054556 (1977-10-01), Van Gulick

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