a method for forming polyacrylic acid granules and granules prepared therefrom , wherein the granules are flowable , have comparable swelling characteristics and provide comparable tablet properties to powdered polyacrylic acid , have increased bulk density and contain minimal amounts of very small particles that can cause dusting and static adherence . the granules are used to prepare controlled - release tablets , especially for pharmaceutical purposes . the tablets prepared from granules obtained by the method of present invention have superior controlled release properties .