Polyurethane hydrogel and method for the production of the same

Details Polyurethane hydrogel and method for the production of the same Polyurethane hydrogel and method for the production of the same

1976-08-17

1978-10-03

Tillman, Murray

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

210 54, B01D 5302, C08G 1832, C08J 306

Patent

active

041183541

ABSTRACT:
The improved polyurethane hydrogel is produced by dispersing a reaction product obtained by the reaction of a polyisocyanate having at least two isocyanate groups with a polyether. The polyether comprises a plurality of alkylene oxides, 50 to 90% by weight of which is ethylene oxide, added at random to a polyalcohol having at least two terminal hydroxyl groups in an amount of an average molecular weight within the range of 1,000 to 4,000 per said hydroxyl terminal group of said polyalcohol. The improved polyurethane hydrogel can have a greater water content and is highly stable and highly elastic.

REFERENCES:
patent: 2726219 (1955-12-01), Hill
patent: 2948691 (1960-08-01), Windemuth et al.
patent: 3181612 (1965-05-01), West
patent: 3847722 (1974-11-01), Kistner
patent: 3894131 (1975-07-01), Steech

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