Hydrophilic polyvinylpyrrolidone compositions having a low coeff

Details Hydrophilic polyvinylpyrrolidone compositions having a low coeff Hydrophilic polyvinylpyrrolidone compositions having a low coeff

1991-11-21

1993-10-05

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...

525123, 525125, 528 76, 528 69, C08L 7504

Patent

active

052506207

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:
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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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