Process for granulating azobisamidine salts using an aqueous binder

Claim 1

A process for producing granules of an azobisamidine salt of the formula: ##STR5## wherein R 1 and R 2 are independently selected from the group consisting of C 1-6 alkyl, C 3-6 cycloalkyl and an aliphatic ring wherein R 1 and R 2 , together with the carbon to which they are attached, are bonded together to form a ring containing 4 to 8 carbon atoms; G is a guanyl group of the formula ##STR6## wherein R 3 and R 4 are independently selected from the group consisting of hydrogen, C 1-10 alkyl, C 1-10 alkyl substituted with a substituent selected from the group consisting of hydroxy, chloro, bromo, and phenyl, C 3-6 cycloalkyl, allyl, phenyl, phenyl substituted with a substituent selected from the group consisting of methyl, ethyl, methoxy, ethoxy, hydroxy, nitro, amino, acetyl and acetylamino; R 5 is a lower alkylene or lower alkylene having one or more substituents selected from the group consisting of C 1-4 alkyl and hydroxy; R 6 is hydrogen or a hydroxyalkyl; and X is selected from the group consisting of Cl, Br and CH 3 COO--, which comprises granulating a powder of azobisamidine salt using a mixture of water and a water-soluble organic solvent as a binder, wherein the mixture of water and a water-soluble organic solvent is adjusted to make the amount of water 5 to 18% by weight, based on the weight of the azobisamidine salt.