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:
Jun. 16, 2015
Filed:
Aug. 07, 2013
Chi Mei Corporation, Tainan, TW;
Chi Mei Corporation, Tainan, TW;
Abstract
Provided is a polymerization method of a modified copolymer of conjugated diene and vinyl aromatic hydrocarbon. A multi-functional vinyl benzene-based compound is reacted with an organic alkali metal compound to form a star shaped compound with multiple active sites. A conjugated diene monomer, a vinyl aromatic hydrocarbon monomer, and the star shaped compound with multiple active sites are reacted with each other to form a copolymer of conjugated diene and vinyl aromatic hydrocarbon. The copolymer of conjugated diene and vinyl aromatic hydrocarbon is then reacted with a modifier to form the modified copolymer of conjugated diene and vinyl aromatic hydrocarbon. The modifier is represented by formula 1,