Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1981-10-08
1983-06-21
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...
525381, 525382, C08F 832
Patent
active
043895131
ABSTRACT:
A highly absorbent resin which is essentially a polyamine-crosslinked, partial neutralization product obtained by reaction of an alkali metal hydroxide with a carboxyl-containing polymer selected from the froup consisting of alpha-olefin-maleic anhydride copolymers, vinyl compound-maleic anhydride copolymers, polyacrylic acid, polymethacrylic acid, and mixtures thereof, the degree of neutralization of the said neutralization product being 0.4 to 0.8 equivalent of total carboxyl groups of the said carboxyl-containing polymer, the amount of polyamine as a crosslinking agent being not more than 2 parts by weight per 100 parts by weight of the neutralization product on the uncrosslinked basis, the resin being capable of absorbing at least 20 times its own weight of distilled water. The resin has good resistance to heat and good durability in the hydrous condition.
REFERENCES:
patent: 3506625 (1970-04-01), Patinkin
patent: 3678016 (1972-07-01), Zimmerman et al.
patent: 3786113 (1974-01-01), Vassileff
patent: 4085060 (1978-04-01), Vassileff
patent: 4241682 (1980-12-01), Konstandt
Kuraray Company Limited
Lieberman Paul
Sellers Robert E. L.
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