Patent ID: 8969496
Filing Date: 2015-03-03
Classification: C08F,Y10S

Abstract:
1. A method for controlling the chain structure of a copolymer of a conjugated diene compound and a non-conjugated olefin, wherein introduction of the conjugated diene compound is controlled in the presence of the non-conjugated olefin and a polymerization catalyst so as to control the chain structure of the copolymer, and wherein the polymerization catalyst includes a metallocene-based composite catalyst represented by the following formula (A): wherein R each independently represents an unsubstituted or substituted indenyl group, the R being coordinated with M; M represents a lanthanoid element, scandium, or yttrium; X each independently represents a hydrocarbon group having 1 to 20 carbon atoms, the X being μ-coordinated with M and Q; Q represents a Group 13 element in the periodic table; Y each independently represents a hydrocarbon group having 1 to 20 carbon atoms or a hydrogen atom, the Y being coordinated with Q; and a and b each are 2.