Title:
【発明の名称】ジエン重合体のビニル芳香族化合物溶液の製造方法、およびこれにより得られた溶液の重合によるビニル芳香族化合物の耐衝撃性重合体の製造方法
Document Type and Number:
Japanese Patent JP2003506535
Kind Code:
A
Abstract:
A process for preparing a solution of high molecular weight polymers of conjugated dienes in a vinylaromatic hydrocarbon by anionic polymerization of the diene in the presence of an alkyllithium as catalyst and a process for preparing impact-modified polymers of vinylaromatic compounds is described. The first process comprises firstly polymerizing the diene in solution in an aromatic hydrocarbon which is free of ethylenic double bonds to a molecular weight below about 105, then adding a trialkylaluminum in a molar excess relative to the alkyllithium, diluting the solution obtained with the vinylaromatic compound and then coupling the polydiene with a polyepoxide or an alkyl (meth)acrylate to give a high molecular weight polymer. The solution obtained in this way is further processed to give an impact-modified polymer of a vinylaromatic hydrocarbon by polymerizing the solution prepared as described, if desired after addition of further amounts of a vinylaromatic compound, in a manner known per se.
Inventors:
Jungling, Stephan
Gauzepol, Hermann
Wolzeran, Volker
Gauzepol, Hermann
Wolzeran, Volker
Application Number:
JP2001515723A
Publication Date:
February 18, 2003
Filing Date:
August 01, 2000
Export Citation:
Assignee:
BASF Akchen Gezel Shaft
International Classes:
C08C19/44; C08F4/48; C08F4/52; C08F36/04; C08F2/06; C08F279/02; (IPC1-7): C08F279/02; C08F2/06; C08F4/48; C08F36/04
Attorney, Agent or Firm:
Sato Eto