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. 02, 1999
Filed:
Dec. 31, 1996
Applicant:
Inventors:
William L Hergenrother, Akron, OH (US);
Tristram W Bethea, Bath, OH (US);
Assignee:
Bridgestone Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F / ;
U.S. Cl.
CPC ...
556 87 ; 526173 ; 526176 ; 526190 ; 526336 ; 526335 ; 526340 ; 524571 ; 524572 ; 524575 ; 525248 ; 525370 ; 525375 ; 5253323 ; 5253329 ; 5253319 ; 502152 ;
Abstract
Triorgano substituted-tin lithium initiators are made in a dimethyl ether solvent. The substitution of dimethyl ether as the solvent for the traditional tetrahydrofuran solvent results in an initiator for anionic polymerizations that can produce less 1,2-vinyl repeat units. The dimethyl ether is also easier to remove from the polymerization media because it has a boiling point at one atmosphere of minus 24.8.degree. C. and thus is a gas at 25.degree. C.
Hergenrother, William. (1999). Synthesis of tributyltin lithium (U.S. Patent No. 5877336). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5877336
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile