Absorbent structures

Details Absorbent structures Absorbent structures

1985-06-28

1989-04-04

Bell, James J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428326, 428913, 521 25, 521 28, 524 52, 524548, 524556, 604368, C08D 520

Patent

active

048185981

ABSTRACT:
The present invention relates to absorbent structures in which hydrogel has improved ability to absorb salt-containing fluids due to inclusion within the absorbent structures of fibrous anion exchange materials. The absorbent structures of the present invention comprise hydrogel and fibrous anion exchange material (e.g., DEAE cellulose), and, optionally, fibrous cation exchange materials and/or conventional absorbent materials; said absorbent structures having an equilibrium pH of from about 5 to about 11. The present invention further relates to disposable absorbent products (e.g., diapers, incontinent pads, sanitary napkins) which comprise absorbent structures of the present invention.

REFERENCES:
patent: 3004895 (1961-10-01), Schwartz
patent: 3658790 (1972-04-01), Bernardin
patent: 3691154 (1972-09-01), Bernardin
patent: 3707148 (1972-12-01), Bryce
patent: 3793299 (1974-02-01), Zimmerer
patent: 3889678 (1975-06-01), Chatterjee et al.
patent: 4020271 (1977-04-01), Chatterjee
patent: 4026291 (1977-05-01), Nagano et al.

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