Process for the production of polyisocyanates

Details Process for the production of polyisocyanates Process for the production of polyisocyanates

1975-05-08

1977-03-22

Torrence, Dolph H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 25A, 260 25AT, 260 25AD, 260248NS, 260389, 260453A, 260453AL, 260453AM, 260453AB, 260470, 260471C, C07C119042, C07C119045, C07C119048

Patent

active

040137015

ABSTRACT:
The instant invention relates to a process for producing modified polyisocyanates suitable for the production of hydrophilic foams, wherein an organic polyisocyanate is heat treated with a water-containing, organic sulphonic acid at a specified molar ratio and for a specified time. The invention further relates to the use of such modified polyisocyanates in producing a hydrophilic polyurethane foam.

REFERENCES:
patent: 3826769 (1974-07-01), Carlson

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