Process for producing a superabsorbent polymer

Details Process for producing a superabsorbent polymer Process for producing a superabsorbent polymer

1991-05-20

1991-12-24

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

264 25, 521915, 521149, 526240, 5263077, 528481, 528500, 528503, C08J 928

Patent

active

050753444

ABSTRACT:
This invention provides an improved process for producing a superabsorbent polymer with reduced residual monomer content which comprises partially drying a crosslinked, partially neutralized polymer gel, then raising the temperature of the gel using microwaves or RF radiation in the absence of circulating air and thereafter completing the drying.

REFERENCES:
patent: 4920202 (1990-04-01), Irie et al.

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