Process for the production of highly water-absorbing but less wa

Details Process for the production of highly water-absorbing but less wa Process for the production of highly water-absorbing but less wa

1980-08-19

1982-09-28

Lieberman, Paul

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

Synthetic resins

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

521 31, 521 34, 525119, 526287, 526317, 526320, 5263231, 5263232, C08L 6300, C08F 2020, C08F12020

Patent

active

043519229

ABSTRACT:
A highly water-absorbing but less water-soluble hydrogel is produced by polymerizing at least one hydrophilic ethylenically unsaturated monomer, e.g., ethylenically unsaturated carboxylic acid, ethylenically unsaturated sulfonic acid, or derivatives thereof, in the presence of a specific difunctional compound, e.g., polyethyleneglycol diglycidyl ether, polyethyleneglycol diacrylate, etc.

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patent: 3335112 (1967-08-01), Marks
patent: 3501553 (1970-03-01), Farber
patent: 3697467 (1972-10-01), Haughney
patent: 3751399 (1973-08-01), Lee
patent: 3850892 (1974-11-01), Shen
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patent: 3988274 (1976-10-01), Masuhara
patent: 4075148 (1978-02-01), Zatmann
patent: 4076921 (1978-02-01), Stol
patent: 4268641 (1981-05-01), Koenig
patent: 4277582 (1981-07-01), Mueller
patent: 4295762 (1981-10-01), Slovinsky

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