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:
May. 04, 1993
Filed:
Feb. 19, 1992
Applicant:
Inventors:
Andrew P Kahn, Wayne, PA (US);
Robert G Gastinger, West Chester, PA (US);
Rangasamy Pitchai, West Chester, PA (US);
Assignee:
Arco Chemical Technology, L.P., Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
568617 ; 560240 ;
Abstract
A process for producing tetrahydrofuran polymers having a narrow molecular weight distribution is disclosed. Tetrahydrofuran is polymerized in the presence of a carboxylic acid anhydride and amorphous silica-alumina. The process overcomes the need for costly post-treatment techniques such as distillation and selective solvent extraction.
Kahn, Andrew. (1993). Preparation of tetrahydrofuran polymers having a narrow molecular weight (U.S. Patent No. 5208385). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5208385
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile