Patent ID: 7452929
Filing Date: 2008-11-18
Classification: A01K,A61P

Abstract:
1. A method for incorporating a radiopaque additive into a polymer material and shaping such polymer material into an animal chew toy comprising: a. providing a polymer resin; b. providing a radiopaque additive; c. melt compounding said radiopaque additive into said polymer resin, to a first desired level of concentration of said additive in said polymer; d. recovering the product of step (c) and mixing said product with additional amounts of said polymer resin to provide a second level of desired concentration of said additive in said polymer, wherein said second level is lower than said first level; e. molding the product of step (d) in the form of an animal chew wherein said radiopague additive comprises a mixture of barium sulfate, calcium carbonate and silica.