Hydrophilic polyurethane composition

Details Hydrophilic polyurethane composition Hydrophilic polyurethane composition

1988-03-18

1989-03-07

Buffalow, Edith

Stock material or miscellaneous articles

Composite

Of polyamidoester

424423, 424432, 424443, 424445, 424447, 424449, 350410, 1283481, 128849, 128833, B32B 2700

Patent

active

048105821

ABSTRACT:
Water absorptive polyurethane composition, having high mechanical strength, is formed of A. about 25% to about 75% of a hydrophilic polyether polyurethane which is the reaction product of diethylene glycol and a polyoxyethylene glycol having a molecular weight of about 1000 to about 8000 with a polyisocyanate and B. about 75% to about 25% of a hydrophobic polyester polyurethane which is the reaction product of a polyfunctional polyester derived from the condensation of a polyol with a polybasic acid with a polyisocyanate.

REFERENCES:
patent: 3793241 (1974-02-01), Kyle et al.
patent: 3876581 (1975-04-01), Neogi
patent: 3928255 (1975-12-01), Milkovich et al.
patent: 3961629 (1976-06-01), Richter et al.
patent: 4279795 (1981-07-01), Yamashita et al.
patent: 4576156 (1986-03-01), Dyck et al.

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