Process for producing highly water-absortive polymers

Details Process for producing highly water-absortive polymers Process for producing highly water-absortive polymers

1992-01-22

1993-02-09

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526240, C08F 200

Patent

active

051854139

ABSTRACT:
There is provided a process for producing a substantially water-insoluble, highly water-absorptive polymer which comprises subjecting an aqueous solution of a monomer comprising as a main component acrylic acid and/or its alkali metal salt to polymerization in the presence of a hypophosphorous acid compound.

REFERENCES:
patent: 2789099 (1957-04-01), Rife et al.
patent: 4621127 (1986-11-01), Denzinger et al.
patent: 4772671 (1988-09-01), Steeman et al.
patent: 4774303 (1988-09-01), Denzinger et al.

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