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:
Dec. 20, 2005
Filed:
Nov. 10, 2000
Yoichi Ozawa, Kodaira, JP;
H. Jerrold Miller, Panama City, FL (US);
Koji Masaki, Fairlawn, OH (US);
Bridgestone Corporation, Tokyo, JP;
Abstract
A method for preparing a functionalized polymer comprising the steps of preparing a pseudo-living polymer by polymerizing conjugated diene monomer with a lanthanide-based catalyst, where said pseudo-living polymer is characterized by having greater than about 85 percent of the polymer in the cis microstructure and less than about 3 percent of the polymer is in the 1,2- or 3,4-microstructure, and reacting the pseudo-living polymer with at least one functionalizing agent defined by the formula (I) or (II)where Z is a substituent that will react or interact with organic or inorganic fillers; Ris a single bond or a divalent organic group; Ris a monovalent organic group or a divalent organic group that forms a cyclic organic group with Ror R; Ris a single bond, a divalent organic group, or a trivalent organic group that forms a cyclic organic group with Ror R; Ris a single bond, a divalent organic group, or a trivalent organic group that forms a cyclic organic group with Ror R; Ris a monovalent organic group or a divalent organic group that forms a cyclic organic group with Ror R; Ris a monovalent organic group or a divalent organic group that forms a cyclic organic group with Ror R; and Ris a monovalent organic group or a divalent organic group that forms a cyclic organic group with Ror R; with the proviso that each group attached to the imino carbon is attached via a carbon atom and R, R, R, R, R, R, Rand Z are substituents that will not protonate a pseudo-living polymer.