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. 01, 1997
Filed:
Apr. 26, 1996
Robert S Davidson, Edina, MN (US);
Robert W Ferguson, Maplewood, MN (US);
Barry E Heldman, Cottage Grove, MN (US);
Timothy J Diekmann, Wyoming, MN (US);
Anthony R Maistrovich, Woodbury, MN (US);
James A Higgins, River Falls, WI (US);
Mark D Gehlsen, Eagan, MN (US);
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Abstract
Described herein is a continuous process for polymerizing 1-alkenes. In this process, which operates free of any hydrogen control feed, the resultant polymer has an inherent viscosity that is closely centered around a predetermined targeted value. If desired, the targeted value can be changed while the process is being performed. The process is carried out in a reactor that allows for essentially plug flow of material passing therethrough. Additionally, the temperature profile of the reactor is controllable.