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:
Sep. 13, 2011
Filed:
Dec. 27, 2007
Steven Luo, Copley, OH (US);
Junko Kurazumi, Kodaira, JP;
Yoichi Ozawa, Kodaira, JP;
Timothy L. Tartamella, Silver Lake, OH (US);
Mark Smale, Hudson, OH (US);
Kevin Mccauley, Coventry Township, OH (US);
Steven Luo, Copley, OH (US);
Junko Kurazumi, Kodaira, JP;
Yoichi Ozawa, Kodaira, JP;
Timothy L. Tartamella, Silver Lake, OH (US);
Mark Smale, Hudson, OH (US);
Kevin McCauley, Coventry Township, OH (US);
Other;
Abstract
This invention relates to a method for producing functionalized cis-1,4-polydienes having a combination of a high cis-1,4-linkage content and a high functionality, the resulting polymers and the vulcanized products containing the polymers. The functionalized cis-1,4-polydienes of the present invention are produced by a method comprising the steps of: (1) preparing a reactive polymer by polymerizing conjugated diene monomer with a lanthanide-based catalyst in the presence of less than 20% by weight of organic solvent based on the total weight of monomer, organic solvent, and resulting polymer, where the lanthanide-based catalyst is the combination of or reaction product of (a) a lanthanide compound, (b) an aluminoxane, (c) an organoaluminum compound other than an aluminoxane, and (d) a halogen-containing compound; and (2) contacting the reactive polymer with a functionalizing agent.