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:
Jan. 28, 2014
Filed:
Nov. 12, 2010
Luc Moens, Sint-Genesius-Rode, BE;
Luc Moens, Sint-Genesius-Rode, BE;
Cytec Surface Specialties, S.A., Brussels, BE;
Abstract
The present invention relates to polyesters that can be prepared from renewable resources and/or recycled materials and the production process thereof. In particular, hydroxyl-functional or carboxyl-functional polyesters containing moieties of terephthalic acid and/or isophthalic acid, ethylene glycol, a dianhydrohexitol, and of one or more linear chain dicarboxylic acids are provided. Further, the polyesters have a number average molecular weight, as measured by gel permeation chromatography, of from 400 to 15000 daltons, more preferably from 550 to 15000 daltons. The polyesters of the invention can basically be prepared from recycled polyethylene terephthalate and from renewable polyacids and/or polyols. The present invention further provides a process to produce such polyesters via glycolysis of a polyethylene terepthalate and/or a polyethylene isophthalate with a dianhydrohexitol.