Process for granulating a water-absorbent resin employing (a) wa

Details Process for granulating a water-absorbent resin employing (a) wa Process for granulating a water-absorbent resin employing (a) wa

1986-12-03

1988-03-22

Lilling, Herbert J.

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

Synthetic resins

Treating polymer containing material or treating a solid...

524 37, 524 42, 524 43, 524 44, 524493, 524503, 524504, 528499, 528501, 528503, C08J 312, C08K 344

Patent

active

047329688

ABSTRACT:
A water-absorbent resin having an appropriate particle size and a narrow particle size distribution can be obtained by adding a powdered inorganic material in a proportion of 0.000005-0.2 part by weight to 1 part by weight of a water-absorbent resin containing therein a carboxylate as a component of the polymer with agitation in an inert solvent in the presence of 0.1-5.0 parts by weight of water and 0.005-0.2 part by weight of a surfactant and then removing water and the inert solvent by distillation.

REFERENCES:
patent: 4093776 (1978-06-01), Aoki et al.
patent: 4320207 (1982-03-01), Watanabe et al.
patent: 4340706 (1982-07-01), Obayashi et al.
patent: 4360651 (1982-11-01), Dinbergs
patent: 4410673 (1983-10-01), Schulz et al.
patent: 4435523 (1984-03-01), Dinbergs
patent: 4446261 (1984-05-01), Yamasaki et al.
patent: 4459396 (1984-07-01), Yamasaki et al.
patent: 4507438 (1985-03-01), Obayashi et al.
patent: 4541871 (1985-09-01), Obayashi et al.
patent: 4663383 (1987-05-01), Lowe et al.

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