Foamed polymer and process for production thereof

Details Foamed polymer and process for production thereof Foamed polymer and process for production thereof

1996-07-01

1997-04-29

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 54, 521 59, C08J 924, C08J 935

Patent

active

056249713

ABSTRACT:
A foamed isocyanate-based polymer having a cellular structure and comprising a non-surface cross-linked superabsorbent polymer, the foamed polymer being capable of: (i) absorbing at least about 10 times its weight of a 0.9 wt./wt. % aqueous NaCl solution maintained at a temperature of from about 20.degree. to about 25.degree. C., and (ii) retaining at least about 10 times its weight of absorbed aqueous NaCl solution which is bound to the superabsorbent polymer. A process for producing the foamed isocyanate-based polymer is also described. The process comprises the steps of: contacting an isocyanate, an active hydrogen-containing compound, an aqueous blowing agent, a catalyst and a non-surface cross-linked superabsorbent polymer, the superabsorbent polymer being capable of absorbing at least about 10 times its weight of a 0.9 wt./wt. % aqueous NaCl solution maintained at a temperature in the range of from about 20.degree. to about 25.degree. C.; and expanding the reaction mixture to produce the foamed isocyanate-based polymer. The active hydrogen-containing compound comprises from about 10% to 100% by weight of a hydrophilic active hydrogen-containing compound and from 0 to about 90% by weight a non-hydrophilic active hydrogen-containing compound. The foamed isocyanate-based polymer is ideally suitable for use in an absorption layer in a personal hygiene device.

REFERENCES:
patent: 3171820 (1965-03-01), Volz
patent: 3175025 (1965-03-01), Geen et al.
patent: 3781231 (1973-12-01), Janssen et al.
patent: 3799898 (1974-03-01), Lamplugh et al.
patent: 3900030 (1975-08-01), Bashan
patent: 4062817 (1977-12-01), Westerman
patent: 4066583 (1978-01-01), Spaulding
patent: 4167464 (1979-09-01), George
patent: 4190562 (1980-02-01), Westerman
patent: 4259452 (1981-03-01), Yukuta et al.
patent: 4394930 (1983-07-01), Korpman
patent: 4466993 (1984-08-01), Hou et al.
patent: 4486489 (1984-12-01), George
patent: 4725629 (1988-02-01), Garvey et al.
patent: 4731391 (1988-03-01), Garvey
patent: 4977892 (1990-12-01), Ewall
patent: 4985467 (1991-01-01), Kelly et al.
patent: 5328935 (1994-07-01), Van Phan et al.
patent: 5336695 (1994-08-01), Nass et al.
patent: 5338766 (1994-08-01), Phan et al.
"Urethane Chemicals Preliminary Data Sheet", Olin Urethane Chemical Scott Acquell Foam, Foam Division, Scott Paper Co.

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