Process for the manufacture of reinforced polyurethane foams

Details Process for the manufacture of reinforced polyurethane foams Process for the manufacture of reinforced polyurethane foams

1979-11-13

1981-01-06

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

252182, 521101, 521120, 521122, 521123, 521136, 521137, C08G 1814

Patent

active

042437555

ABSTRACT:
The invention relates to a process for the manufacture of reinforced polyurethane foams based on the reaction of organic polyisocyanates and polyols in the presence of filler dispersions. These dispersions are prepared by in situ crushing of the filler in the polyisocyanate or polyol to a particle size of less than 7 microns.

REFERENCES:
patent: 3523093 (1970-08-01), Stambergen
patent: 3869413 (1975-03-01), Blankenship
patent: 4073840 (1978-02-01), Saidla
patent: 4108791 (1978-08-01), Wasilczyk

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