Patent ID: 6495698
Filing Date: 2002-12-17
Classification: A01N,C02F

Abstract:
A shape-retentive article which comprises a binder-free pressure compacted tablet or puck comprised of at least one pressure-compactible 1,3-dihalo-5,5-dimethylhydantoin in which one of the halogen atoms is a chlorine atom, and the other halogen atom is a bromine or chlorine atom, said hydantoin prior to compaction (i) being devoid of prior treatment to impart compactibility to the solids, and (ii) when said other halogen atom is a chlorine atom, having an average particle size in the range of about 100 to about 300 microns, with 50% of the particles having a particle size of at least about 70 microns, and when said other halogen atom is a bromine atom, having an average particle size in the range of about 250 to about 350 microns, with 50% of the particles having a particle size of at least about 170 microns, said shape-retentive article being comprised of compacted particles of said hydantoin which have undergone compression in a die without undergoing breakage or delamination of the tablet or puck on removal from a die.