Difunctional isocyanate-terminated polyoxyalkylene diamine prepo

Details Difunctional isocyanate-terminated polyoxyalkylene diamine prepo Difunctional isocyanate-terminated polyoxyalkylene diamine prepo

1987-07-27

1988-08-02

Welsh, Maurice J.

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 49, 528 68, 528 76, C08G 1880

Patent

active

047614650

ABSTRACT:
Diisocyanate and polyoxyalkylene diamine reaction products which contain as the principle reaction component, a diamine having the formula: ##STR1## wherein R' independently represents hydrogen or methyl and x is a number having an average value of at least 1 to about 60 and a diisocyanate of the formula: ##STR2## The products of the invention are obtained by reacting a polyoxyalkylene diamine with an excess of diisocyanate in the presence of a polar solvent to obtain products with the following general structures: ##STR3## where B is alkyl group from diisocyanates. These products and the corresponding blocked isocyanate prepolymer are further used to prepare coatings by reaction with polyoxyalkylene polyamine.

REFERENCES:
patent: 4686242 (1987-08-01), Turner et al.

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