Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Compositions to be polymerized by wave energy wherein said...
Patent
1994-12-16
1996-09-03
Chapman, Mark
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Compositions to be polymerized by wave energy wherein said...
4284111, C08J 328
Patent
active
055524532
ABSTRACT:
An object of the present invention is to provide a water-absorptive material having a satisfactory water-absorptivity in an ion-exchanged water as well as an ionic aqueous solution and also having a satisfactory thermoplastic moldability, and also to provide a water-absorptive molded product having an excellent fabricability including heat-sealability.
Thus, the present invention provides a water-absorptive material crosslinked by irradiation with an ionizing radiation or ultraviolet rays, which comprises a hydrophilic high molecular compound having a weight average molecular weight of at least 10,000 obtained by reaction of (i) a polyalkylene oxide compound having an organic compound containing two active hydrogen groups addition-polymerized with an alkylene oxide comprising ethylene oxide as the main component and (ii) a polycarboxylic acid, a polycarboxylic acid anhydride, a lower alkyl ester of polycarboxylic acid or a diisocyanate.
REFERENCES:
patent: 5059630 (1991-10-01), Fujita et al.
patent: 5248431 (1993-09-01), Fujita et al.
English Abstracts of JP 5-339384.
Fujita Takeshi
Kakishita Osamu
Matsuo Katsuaki
Chapman Mark
Dai-Ichi Kogyo Seiyaku Co. Ltd.
Mitsubishi Plastics Inc.
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