Patent ID: 8507627
Filing Date: 2013-08-13
Classification: B60C,C08F,C08K,C08L

Abstract:
1. An aromatic vinyl compound-conjugated diene compound copolymer obtained by an addition polymerization of an aromatic vinyl compound and a conjugated diene compound in the presence of a polymerization catalyst composition comprising at least one complex selected from the group consisting of a metallocene complex represented by the following general formula (I): wherein M is a lanthanoid element, scandium or yttrium, Cp a metallocene complex represented by the following general formula (II): wherein M is a lanthanoid element, scandium or yttrium, Cp a half metallocene complex represented by the following general formula (III): wherein M is a lanthanoid element, scandium or yttrium, Cp wherein a content of cis-1,4 bond in a conjugated diene compound portion is not less than 80%, and a block quantity of the aromatic vinyl repeating unit portion as measured by NMR is not more than 13% based on the total amount of aromatic vinyl repeating units in the copolymer.