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:
Jul. 31, 2007
Filed:
Nov. 01, 2004
Michael William Gardner, North Yorkshire, GB;
Jill Barbara Cunningham, Cleveland, GB;
Derek J. Winter, Middlesbrough, GB;
Stephen D. Jenkins, Cleveland, GB;
Michael William Gardner, North Yorkshire, GB;
Jill Barbara Cunningham, Cleveland, GB;
Derek J. Winter, Middlesbrough, GB;
Stephen D. Jenkins, Cleveland, GB;
Invista North America S.AR.L., Wilmington, DE (US);
Abstract
A method for enhancing solid state polymerization of polyethylene terephthalate is disclosed in which at least one monomeric unit of diacid and/or dimethyl ester comprising at least one pendant chemical side group is copolymerized with a diol and a diacid or a dimethyl ester. The at least one pendant chemical side group may include groups chosen from tertiary butyl, hexyl, pentyl, butyl, propyl, ethyl, methyl, nitrosyl (NO) and sulfonyl (SO) groups.