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:
Jan. 11, 2011
Filed:
Jul. 28, 2010
Adel Farhan Halasa, Bath, OH (US);
Wen-liang Hsu, Cuyahoga Falls, OH (US);
Chad Aaron Jasiunas, Copley, OH (US);
Adel Farhan Halasa, Bath, OH (US);
Wen-Liang Hsu, Cuyahoga Falls, OH (US);
Chad Aaron Jasiunas, Copley, OH (US);
The Goodyear Tire + Rubber Company, Akron, OH (US);
Abstract
This invention discloses a process for synthesizing a dendrimer of a rubbery polymer comprising: (a) reacting a lithium terminated rubbery polymer with a halogenated tin containing compound to produce a polymer which is terminated with halogenated tin moieties, wherein the halogenated tin containing compound is of the structural formula: wherein X represents a halogen atom, wherein Zgroups can be the same or different and are selected from alkyl groups containing from 1 to 8 carbon atoms, wherein x represents an integer from 1 to 20, wherein the molar ratio of the lithium terminated rubbery polymer to halogen atoms in the halogenated tin containing compound is within the range of 2:n to (n−1):n, wherein n represents the number of halogen atoms that are bonded directly to tin atoms in the halogenated tin containing compound; (b) reacting the polymer which is terminated with halogenated tin moieties with a molar excess of a tertiary alcohol to produce a polymer which is terminated with hydroxy tin moieties; and (c) allowing the polymer which is terminated with the hydroxy tin moieties to couple under conditions sufficient to produce a dendrimer of the rubbery polymer.