Patent ID: 6135987
Filing Date: 2000-10-24
Classification: A61F,C08G,D01F,D04H,Y10T

Abstract:
A process for forming a synthetic fiber, comprising:a. providing a first component of an aliphatic polyester polymer;b. providing a second component of a multicarboxylic acid;c. mixing said first component aliphatic polyester polymer and said second component multicarboxylic acid to form an unreacted specified thermoplastic composition;d. melt blending said unreacted specified thermoplastic composition in an extruder or mixer;e. lubricating said extruder by said second component multicarboxylic acid;f. providing a nucleating agent provided by said second component multicarboxylic acid; andg. crystallizing said specified thermoplastic composition in the presence of said second component multicarboxylic acid nucleating agent to form a mean crystal size less than about 120 Angstroms.