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. 24, 2005
Filed:
Feb. 28, 2002
Yoichi Ozawa, Kodaira, JP;
David M. Roggeman, North Royalton, OH (US);
H. Jerrold Miller, Savannah, GA (US);
Koji Masaki, Hagashimurayama, JP;
Steven Luo, Akron, OH (US);
Thomas A. Antkowiak, Rittman, OH (US);
Yoichi Ozawa, Kodaira, JP;
David M. Roggeman, North Royalton, OH (US);
H. Jerrold Miller, Savannah, GA (US);
Koji Masaki, Hagashimurayama, JP;
Steven Luo, Akron, OH (US);
Thomas A. Antkowiak, Rittman, OH (US);
Bridgestone Corporation, Tokyo, JP;
Abstract
A continuous process for producing conjugated diene polymers comprising the steps of contacting, within an hydrocarbon solvent and within a continuous reactor, conjugated diene monomer and a catalyst composition prepared by combining: (a) a lanthanide compound, (b) an alkylating agent, and (c) a halogen-containing compound, and maintaining a non-ideal flow pattern within the continuous reactor so that 10% of the reagents entering the reactor at a reference time tare still present within the continuous reactor at a time t+xt, where tis the residence time corresponding to ideal flow within the continuous reactor and x is a numeral greater than 1.5.