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. 08, 1988
Filed:
Sep. 22, 1986
Anthony J Bell, Stow, OH (US);
Adel F Halasa, Bath, OH (US);
Kenneth F Castner, Uniontown, OH (US);
George F Balogh, N. Canton, OH (US);
The Goodyear Tire & Rubber Company, Akron, OH (US);
Abstract
Metals from Groups I and II of the periodic table are commonly used to initiate the polymerization of conjugated diolefin monomers into polymers. The polymers formed in such polymerizations are terminated with the metal used to initiate the polymerization and are sometimes referred to as living polymers. Reactive end groups can be affixed to the chain ends of such polymers by utilizing the process of this invention. Such reactive end groups can subsequently be reacted with the backbone of other polymer chains. This results in the formation of a polymer having a reduced number of dangling chain ends. The functionalizing agents which can be utilized in the preparation of such polymers include hexachlorocyclopentadiene, tetraalkylthiuram disulfides, and chlorinated phenyl fulvenes.