The Cleavage of Sulfides and Sulfones by Alkali Metals in Liquid Amines. III. The Cleavage of Alkyl Cycloalkyl and Dicycloalkyl Sulfides and Sulfones by Lithium in Methylamine
The Cleavage of Sulfides and Sulfones by Alkali Metals in Liquid Amines. III. The Cleavage of Alkyl Cycloalkyl and Dicycloalkyl Sulfides and Sulfones by Lithium in Methylamine
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 an organosulfide; and (ii) polymerizing conjugated diene monomer in the presence of the active catalyst and an organosulfide.
US9650456B2
申请人:——
公开号:US9650456B2
公开(公告)日:2017-05-16
[EN] PROCESS FOR PRODUCING POLYDIENES<br/>[FR] PROCÉDÉ DE FABRICATION DE POLYDIÈNES
申请人:BRIDGESTSONE CORP
公开号:WO2013138270A1
公开(公告)日:2013-09-19
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 an organosulfide; and (ii) polymerizing conjugated diene monomer in the presence of the active catalyst and an organosulfide.
The Cleavage of Sulfides and Sulfones by Alkali Metals in Liquid Amines. III. The Cleavage of Alkyl Cycloalkyl and Dicycloalkyl Sulfides and Sulfones by Lithium in Methylamine