Patent ID: 7288586
Filing Date: 2007-10-30
Classification: C08K,C08L,Y10T

Abstract:
1. A process for the manufacture of a preform comprising combining: solid polyester particles comprising a polyester polymer, solid polyamide particles comprising a polyamide polymer, and solid concentrate particles obtained by melt compounding a transition metal compound in an amount ranging from 1000 ppm to 10,000 ppm (by metal) and a polyester polymer having an It.V. of 0.55 dL/g to 1.15 dL/g in an amount of at least 40 wt. %, each based on the weight of the concentrate, wherein the transition metal is provided in an oxidation state other than zero into a melt processing zone, forming a melt, and forming a preform directly from the melt.