The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 03, 2010
Filed:
Nov. 21, 2001
Andrew Martin Bellamy, Stokesley, GB;
Charles Mark Lindall, Stockton-on-Tees, GB;
Calum Harry Mcintosh, Stockton-on-Tees, GB;
Martin Graham Partridge, Stockton-on-Tees, GB;
John Armstrong Young, Midlothian, VA (US);
Steven Charles Davies, Apex, NC (US);
Andrew Martin Bellamy, Stokesley, GB;
Charles Mark Lindall, Stockton-on-Tees, GB;
Calum Harry McIntosh, Stockton-on-Tees, GB;
Martin Graham Partridge, Stockton-on-Tees, GB;
John Armstrong Young, Midlothian, VA (US);
Steven Charles Davies, Apex, NC (US);
Johnson Matthey PLC, London, GB;
Performance Fibers, Inc., Richmond, VA (US);
Abstract
A catalyst composition for producing polyesters comprises: a) an organometallic compound obtained by reacting an orthoester or condensed orthoester of titanium, zirconium or aluminum, an alcohol containing at least two hydroxyl groups, a 2-hydroxy carboxylic acid and a base; and b) at least one compound comprising germanium, antimony or tin. Polyesters obtained by esterification reaction in the presence of the catalyst compositions according to the present invention exhibit improved melt properties and are particularly suitable for production of textile and commercial fibers, films and rigid packaging.