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:
Mar. 23, 2021
Filed:
Oct. 31, 2017
Applicant:
Bridgestone Corporation, Chuo-ku, JP;
Inventor:
Kevin M. McCauley, Akron, OH (US);
Assignee:
Bridgestone Corporation, Chuo-ku, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08F 136/06 (2006.01); C08F 36/06 (2006.01); C08F 4/54 (2006.01); C08F 4/619 (2006.01); C08F 36/04 (2006.01); C08F 4/602 (2006.01);
U.S. Cl.
CPC ...
C08F 136/06 (2013.01); C08F 4/602 (2013.01); C08F 4/619 (2013.01); C08F 36/04 (2013.01); C08F 36/06 (2013.01); C08F 2410/01 (2013.01);
Abstract
A method is described for the formation of an active catalyst system for use in the in-line bulk polymerization of polydienes. The method provides a homogeneous, active catalyst system which is capable of being transported to a polymerization reactor for use without causing blockages in piping, thereby saving time and production costs. The catalyst system is formed in-line in a continuous method to avoid prolonged storage periods of the catalyst that can otherwise lead to degradation and disposal of the aged catalyst system.