Absorbents with improved water absorbing power

Details Absorbents with improved water absorbing power Absorbents with improved water absorbing power

1979-03-16

1981-02-17

Levin, Stanford M.

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

Synthetic resins

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

128284, 128285, 525 61, C08F 846

Patent

active

042516439

ABSTRACT:
Absorbent materials for aqueous fluids, which absorb fluid rapidly and swell uniformly, comprise modified polyvinyl alcohol polymers obtained by reacting in an anhydrous condition a polyvinyl alcohol polymer with a cyclic acid anhydride and causing partial crosslinking of said polymer. Absorbent articles such as diapers, sanitary napkins, sanitary tampons, blood absorbents for use in surgical operations, bandages and dressings comprise said absorbent materials and fluid absorbing holders therefor.

REFERENCES:
patent: 2403112 (1946-07-01), Muskat
patent: 2759909 (1956-08-01), Gordon et al.
patent: 2796413 (1957-06-01), Baer

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