Process for preparing novel diamines

Details Process for preparing novel diamines Process for preparing novel diamines

1989-10-30

1991-04-23

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 61, 528 64, C08G 1880

Patent

active

050101609

ABSTRACT:
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 an excess of polyoxyalkylene diamine with a diisocyanate in the presence of a polar solvent and have the following general structures: ##STR3## where B is alkyl group from diisocyanates, and R' has the same meaning as above.
These products are further used to prepare coatings with improved properties by reacting said amine products with isocyanates prepolymers and epoxy material.

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