A method for producing a polydiene, the method comprising the steps of: (i) forming an active catalyst by combining a lanthanide-containing compound, an alkylating agent, and a halogen source in the substantial absence of a sulfone, a sulfoxide, and a phosphine oxide; and (ii) polymerizing conjugated diene monomer in the presence of the active catalyst and a polymerization modulator selected from the group consisting of a sulfone, a sulfoxide, and a phosphine oxide.
US9505859B2
申请人:——
公开号:US9505859B2
公开(公告)日:2016-11-29
[EN] PROCESS FOR PRODUCING POLYDIENES<br/>[FR] PROCÉDÉ DE FABRICATION DE POLYDIÈNES
申请人:BRIDGESTONE CORP
公开号:WO2013075085A1
公开(公告)日:2013-05-23
A method for producing a polydiene, the method comprising the steps of: (i) forming an active catalyst by combining a lanthanide-containing compound, an alkylating agent, and a halogen source in the substantial absence of a sulfone, a sulfoxide, and a phosphine oxide; and (ii) polymerizing conjugated diene monomer in the presence of the active catalyst and a polymerization modulator selected from the group consisting of a sulfone, a sulfoxide, and a phosphine oxide.
Cyclobutyl phenyl sulfoxide and (SR)-cyclobutyl p-tolyl sulfoxide: new reagents for the spiroannelation of cyclopentanone