Hydrophilic polyurethane compositions

Details Hydrophilic polyurethane compositions Hydrophilic polyurethane compositions

1993-07-20

1994-02-01

Seidleck, James J.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525127, 525131, 525452, 525453, 525457, C08L 3906

Patent

active

052832988

ABSTRACT:
The present invention is directed to a hydrophilic composition which is the reaction product of a polyvinylpyrrolidone, an organic monoisocyanate, and an oxyalkylene group containing mono- or di- hydroxyl compound.

REFERENCES:
patent: 3216983 (1965-11-01), Shelanski et al.
patent: 4100309 (1978-07-01), Micklus et al.
patent: 4119094 (1978-10-01), Micklus et al.
patent: 4550126 (1985-10-01), Lorenz
patent: 4585666 (1986-04-01), Lambert
patent: 4589873 (1986-05-01), Schwartz et al.
patent: 4642267 (1987-02-01), Creasy et al.
patent: 4666437 (1987-05-01), Lambert
patent: 4729914 (1988-03-01), Kliment et al.
patent: 4835003 (1989-05-01), Becker et al.
Chapter 21 of the Handbook of Water Soluble Gums & Resins by Robert L. Davidson, 1980, "Polyvinylpyrrolidone", Blecher et al., pp. 21-1 to 21-21.

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