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. 21, 2003
Filed:
Apr. 23, 2001
Donald Ross Kelsey, Fulshear, TX (US);
Betty Marrou Scardino, Katy, TX (US);
Kailash Dangayach, Houston, TX (US);
Houston Slade Brown, Houston, TX (US);
Hans Reitz, Rosbach, DE;
Eckhard Seidel, Frankfurt am Main, DE;
Fritz Wilhelm, Karben, DE;
Shell Oil Company, Houston, TX (US);
Abstract
According to the invention, a polytrimethylene terephthalate is provided having 0.6 to less than 2 mole percent dipropylene glycol. Such compositions have a reduced tendency to generate acrolein when heated in air. These PTT polymer compositions exhibit improved and enhanced dyeability as compared to conventional PTT made by the DMT process and the TPA polycondensation/solid state polymerization processes.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile