Method for reducing residual acrylic acid in acrylic acid polyme

Details Method for reducing residual acrylic acid in acrylic acid polyme Method for reducing residual acrylic acid in acrylic acid polyme

1987-05-11

1988-08-23

Nielsen, Earl

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524832, 524916, 528486, 604372, C08F 606, C08F 624, C08F 2202

Patent

active

047661739

ABSTRACT:
A method for reducing the residual acrylic acid present in water-insoluble polyacrylic acid water absorbent gel polymers which comprises treating these polymers with at least 0.5 mole of either amino acid cysteine or lysine per mole of acrylic acid present in said waters for at least 15 minutes at a temperature of at least 80.degree. C.

REFERENCES:
patent: 4320040 (1982-03-01), Fujita et al.
patent: 4339373 (1982-07-01), Robinson
patent: 4525509 (1985-06-01), Hunter et al.
patent: 4604411 (1986-08-01), Yada et al.
patent: 4654039 (1987-03-01), Brandt et al.

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