Patent ID: 8137888

Claim:
A method for the preparation of shaped polymeric particles comprising the steps of: a) combining one or more organic solvents with a polyester material to form an organic phase, wherein the polyester material is formed from at least one diol and at least one multicarboxylic aromatic acid and has a solubility parameter of greater than 9.0 (cal/cm 3 ) 1/2 , the one or more organic solvents includes at least a first solvent having a solubility parameter of less than 9.0 (cal/cm 3 ) 1/2 , and the difference in solubility parameters for the polyester material and the at least first solvent is between 1.0 and 3.0 (cal/cm 3 ) 1/2 ; b) dispersing the organic phase in an aqueous phase comprising a particulate stabilizer and homogenizing the resultant mixture, wherein the particulate stabilizer is silicon dioxide; c) evaporating the one or more organic solvents to form shaped polymeric particles having a width/length average aspect ratio of less than 0.92; and d) washing and drying the resultant product.