Process for producing granular carboxylated-polymer particle...

Details Process for producing granular carboxylated-polymer particle... Process for producing granular carboxylated-polymer particle...

2007-05-01

2010-11-30

Boykin, Terressa M (Department: 1796)

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

Synthetic resins

Treating polymer containing material or treating a solid...

Reexamination Certificate

active

07842779

ABSTRACT:
An object of the invention is to provide a method for easily producing granular carboxyl group-containing polymer particles, which have a high bulk density and readily swell in water. The invention provides a method for producing a granular carboxyl group-containing polymer particle by producing a carboxyl group-containing polymer particle, preparing an aggregate of the carboxyl group-containing polymer particles by providing the carboxyl group-containing particles with moisture so that the carboxyl group-containing polymer particles absorb the moisture in an amount of 5 to 25% by weight and form the aggregate, drying the aggregate of the carboxyl group-containing polymer particles, and then grinding the dried aggregate.

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