Patent ID: 9434804
Filing Date: 2016-09-06
CPC Classification: B60C,C08F,C08L

Claim Text:
1. A branched conjugated diene copolymer prepared by copolymerizing monomers consisting of a branched conjugated diene compound and a conjugated diene compound, wherein a copolymerization ratio of the branched conjugated diene compound is 1 to 40% by weight, a copolymerization ratio of the conjugated diene compound is 99 to 60% by weight, the branched conjugated diene compound is farnesene, the conjugated diene compound is 1,3-butadiene, and the branched conjugated diene copolymer has a weight-average molecular weight in a range of 3,000 to 3,000,000 and a number-average molecular weight in a range of 3,000 to 3,000,000 such that Mw/Mn is 20.0 or less, where Mw represents the weight-average molecular weight and Mn represents the number-average molecular weight.