Synthetic polymers by polyisocyanate polyaddition process

Details Synthetic polymers by polyisocyanate polyaddition process Synthetic polymers by polyisocyanate polyaddition process

C - Chemistry, Metallurgy

08

G

402/154, 403/31

C08G 18/38 (2006.01) C08G 18/40 (2006.01) C08G 18/50 (2006.01)

Patent

CA 1179098

ABSTRACT Synthetic polymers and a process for their prepara- tion by a polyisocyanate polyaddition reaction are described. Synthetic polymers are provided by the reaction of a polyiso- cyanate with substantially an equivalent amount of an oligomeric para-, meta- or di-meta-aminobenozic acid ester or amide having the formula Image wherein n is an integer of from 2 to 4; each x is one or two; each benzoyl nucleus is para-, meta- or di-meta- amino-substi- tuted; each Z is -O- or -?-; and G is an n-valent radical which may be obtained by the removal of hydroxyl or amino groups from an n-valent oligomeric polyol or polyamine having a molecular weight of from about 400 to about 6,000. Useful synthetic polymeric products can be simply and effectively provided by reaction of the polyisocyanate and the oligomeric aminobenzoic acid ester or amide reactants without the requirement of additional curative or chain-extending agents.

365946

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