The present invention pertains to a method for forming polyacrylic acid
granules and granules formed therefrom wherein the granules are flowable,
have an increased bulk density relative to the as polymerized polyacrylic
acids, and a low amount of dust which is generally characterized herein as
particles which pass through a 325 mesh screen. The granules formed by the
method of the present invention can be used to prepare controlled release
tablets, especially controlled release pharmaceutical tablets. The
controlled release properties of the tablets formed from granules prepared
according to the present invention are unexpectedly better than tablets
prepared from granules formed by other known granulation methods.
