Process for the production of finely divided polyisocyanates con

Details Process for the production of finely divided polyisocyanates con Process for the production of finely divided polyisocyanates con

1987-11-03

1988-07-12

Welsh, Maurice J.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524722, 524723, 524724, 528 52, 528 53, 252182, C08L 7500

Patent

active

047571055

ABSTRACT:
The present invention is directed to a process for the preparation of finely divided solid polyisocyanates containing urea groups by reacting organic polyisocyanates which are free from urea groups with water in an aqueous emulsion, characterized in that the reaction is carried out in the presence of an emulsion- and dispersion-stabilizing compound.

REFERENCES:
patent: 3906019 (1975-09-01), Campbell et al.
patent: 4680367 (1987-07-01), Kopp et al.

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