Liquid polyisocyanate mixtures, a process for their preparation,

Details Liquid polyisocyanate mixtures, a process for their preparation, Liquid polyisocyanate mixtures, a process for their preparation,

1990-08-16

1991-07-02

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521128, 521160, 25218222, C08G 1814

Patent

active

050286366

ABSTRACT:
This invention relates to novel urethane-modified polyisocyanate mixtures of the diphenylmethane series prepared by a process comprising reacting polyisocyanates or polyisocyanate mixtures of the diphenylmethane series with certain monohydric and/or polyhydric alcohols and, optionally, subsequently mixing the initially modified products with polyisocyanates or polyisocyanate mixtures of the diphenylmethane series that have not been modified with urethane groups. This invention further relates to the use of the polyisocyanate mixtures in the preparation of polyurethane foams.

REFERENCES:
patent: 4261852 (1981-04-01), Carroll et al.

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