Hydrophilic graft polymer, production process therefor, composit

Details Hydrophilic graft polymer, production process therefor, composit Hydrophilic graft polymer, production process therefor, composit

1997-12-16

2000-12-26

Buttner, David

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

Synthetic resins

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

525 63, 252180, C08F28306, C02F 510

Patent

active

06166149&

ABSTRACT:
The invention provides: 1) a composition comprising a hydrophilic graft polymer of 60 to 98 wt %, a polyether compound of 20 to 40 wt %, and an unsaturated carboxylic acid type polymer of 0 to 5 wt %; 2) a polymer which is obtained by graft-polymerizing a monoethylenically unsaturated monomer onto a polyether compound having a repeating unit of --RCH--CH.sub.2 --O-- of 30 mol % or more of the polyether compound, and has a purity of at least 75%; and 3) a scale inhibitor comprising a polymer which is obtained by graft-polymerizing a monoethylenically unsaturated monomer onto a polyether compound having ethylene oxide of 80 mol % or more as a structural unit, and has a hydroxyl group value of 30 mgKOH/g or more and an acid value of 200 mgKOH/g or more.

REFERENCES:
patent: 3963805 (1976-06-01), Chu
patent: 4612352 (1986-09-01), Schafer et al.
patent: 4659481 (1987-04-01), Chen
patent: 5420211 (1995-05-01), Hughes et al.
patent: 5952432 (1999-09-01), Yamaguchi

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