Patent ID: 6835335
Filing Date: 2004-12-28
Classification: C08G,C08L

Abstract:
A process for forming solid particles, comprising:a) combining in molten form a major component of a crystallizable condensation homopolymer and a minor component of a non-crystallizable condensation polymer, wherein said crystallizable condensation homopolymer and said non-crysatallizable condensation polymer each have a degree of polymerization of 2 to less than 48 prior to said combining; b) mixing said combined crystallizable condensation homopolymer and non-crystallizable condensation polymer in molten form to form a mixture, said mixture comprising 10 to 30 mol % of said non-crystallizable condensation polymer; c) forming said mixture into droplets; exposing said droplets to a thermal environment which results in the bulk of the droplet reaching within 15 seconds a temperature within Â±10Â° C. of the temperature at which the maximum rate of crystallization of said crystallizable condensation homopolymer occurs; and d) crystallizing at least a portion of said crystallizable condensation homopolymer in said mixture to form solid particles.