Removal of unreacted tolylene diisocyanate from urethane prepoly

Details Removal of unreacted tolylene diisocyanate from urethane prepoly Removal of unreacted tolylene diisocyanate from urethane prepoly

1977-10-11

1979-09-25

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 60, 528 66, C08G 1870

Patent

active

041691750

ABSTRACT:
Disclosed herein are improved urethane prepolymers comprising the reaction product of a polyol with a monomeric isocyanate. The amount of residual unreacted monomeric isocyanate in said prepolymer is less than about 0.7% by weight of said prepolymer.

REFERENCES:
patent: 3415790 (1968-12-01), Davis et al.
patent: 3878157 (1975-04-01), Olstowski et al.

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