Modified polyisocyanates, a process for their production and the

Details Modified polyisocyanates, a process for their production and the Modified polyisocyanates, a process for their production and the

1992-03-30

1993-01-12

Welsh, Maurice J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

525123, 525127, C08L 4700

Patent

active

051791463

ABSTRACT:
Modified polyisocyanates having an NCO group content of from 10 to 45% by weight, comprising a a) a polyisocyanate component consisting essentially of an organic polyisocyanate having an NCO group content of from 15 to 50% by weight which is liquid at room temperature, and b) 2 to 100% by weight, based on the weight of component a), of a polymer modifier consisting of at least one graft rubber which is dispersed in swollen form in component a), and a process for the production of the new modified polyisocyanates are described. The modified polyisocyanates are also useful in the production of plastics by the isocyanate polyaddition process.

REFERENCES:
"Polyurethane", Kunststoff-Handbuch 7, Carl Hanser Verlag, MunchenWien (1983), pp. 78 se seq.

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