公开(公告)号：DE19721400A1

公开(公告)日：1998-11-26

申请号：DE19721400

申请日：1997-05-22

Applicant: BASF AG

Inventor： FISCHER WOLFGANG DR ,  GAUSEPOHL HERMANN DR ,  LAETSCH STEFAN DR ,  SCHADE CHRISTIAN DR

IPC: C08F2/00 ,  C08F36/04 ,  C08F36/00

Abstract: The invention relates to a method for anionic polymerisation of dienes or of dienes and vinyl aromatic monomers in a vinyl aromatic monomer or mixture of monomers to form homopolydienes or copolymers or mixed homopolydienes and copolymers. The polymerisation is carried out in a tempered, hydraulically filled tubular flow reactor or a multitube flow reactor.

公开(公告)号：DE19633273A1

公开(公告)日：1998-02-26

申请号：DE19633273

申请日：1996-08-19

Applicant: BASF AG

Inventor： FISCHER WOLFGANG DR ,  LOTH WOLFGANG DR ,  WARZELHAN VOLKER DR ,  LAETSCH STEFAN DR

IPC: C08F4/44 ,  C08F4/50 ,  C08F12/04 ,  C08F36/04 ,  C08F297/04 ,  C08F12/06

Abstract: A process for the continuous production of styrene polymers (I) by anionic polymerisation in the presence of an alkali metal alkyl as initiator is claimed. The polymerisation is carried out continuously under non-isothermal conditions and without back mixing in the presence of a bivalent or higher metal alkyl or aryl (II) to full conversion. The reactor outlet temperature is kept below 300 deg C.

公开(公告)号：DE19738082A1

公开(公告)日：1999-03-04

申请号：DE19738082

申请日：1997-09-01

Applicant: BASF AG

Inventor： LAETSCH STEFAN DR ,  LOTH WOLFGANG DR ,  NIESNER NORBERT DR ,  FISCHER WOLFGANG DR

IPC: C08J5/00 ,  C08F12/08 ,  C08L25/04 ,  C08L25/06 ,  C08L53/02 ,  D01F6/22 ,  C08J5/18

Abstract: The invention relates to styrene polymers with a bimodal molecular weight distribution having a high molecular weight fraction determined from the representation of the molar mass distribution, of at least 5 surface percent, and a molecular weight at a maximum peak Mp of at least 800,000 g/mol. These styrene polymers can be obtained through anionic polymerisation from vinylaromatic monomers with at least one double initiator dose.

公开(公告)号：DE19731419A1

公开(公告)日：1999-01-28

申请号：DE19731419

申请日：1997-07-22

Applicant: BASF AG

Inventor： SCHADE CHRISTIAN DR ,  LAETSCH STEFAN DR ,  LOTH WOLFGANG DR ,  FISCHER WOLFGANG DR ,  GAUSEPOHL HERMANN DR ,  WARZELHAN VOLKER DR ,  FONTANILLE MICHAEL ,  DEFFIEUX ALAIN PROF DR ,  DESBOIS PHILIPPE

IPC: C08F36/04 ,  C08F279/02 ,  C08F297/04 ,  C08F12/08 ,  C08F12/12 ,  C08F12/36

Abstract: Continuous anionic (co)polymerisation of styrene or diene monomers with alkali metal alkyl (I) as initiator is carried out in the presence of an alkyl or aryl of an at least divalent metal as retarder (II). Also claimed are (a) an initiator containing (I) and (II); (b) a solution of the initiator in a (cyclo)aliphatic hydrocarbon; and (c) styrene polymers obtained by this process.

公开(公告)号：DE19721403A1

公开(公告)日：1998-11-26

申请号：DE19721403

申请日：1997-05-22

Applicant: BASF AG

Inventor： LAETSCH STEFAN DR ,  FISCHER WOLFGANG DR ,  GAUSEPOHL HERMANN DR ,  WARZELHAN VOLKER DR ,  SCHADE CHRISTIAN DR

IPC: C08F4/44 ,  C08F36/04 ,  C08F297/04 ,  C08F36/00

Abstract: A method for the anionic polymerisation of dienes or the copolymerisation of dienes and aromatic vinyl monomers in an aromatic vinyl monomer (mixture) to form polydiene (mixed) homo- or copolymers (P) comprises carrying out (co)polymerisation in the presence of an alkyl or aryl polyvalent metal compound without the addition of a Lewis base. Also claimed are (i) solutions of (P) in aromatic vinyl monomers or monomer mixtures prepared by this method and (ii) a process for the continuous preparation of impact-modified thermoplastic moulding materials containing a soft diene polymer phase dispersed in a hard aromatic vinyl matrix.

公开(公告)号：DE19715036A1

公开(公告)日：1998-10-15

申请号：DE19715036

申请日：1997-04-11

Applicant: BASF AG

Inventor： LAETSCH STEFAN DR ,  FISCHER WOLFGANG DR ,  LOTH WOLFGANG DR ,  GAUSEPOHL HERMANN DR ,  WARZELHAN VOLKER DR ,  FONTANILLE MICHEL ,  DEFFIEUX ALAIN ,  DESBOIS PHILIPPE

IPC: C08F36/04 ,  C08F279/02 ,  C08F297/04 ,  C08F12/00 ,  C08J5/00 ,  C08J5/18 ,  C08L25/04 ,  D01F6/22

Abstract: Continuous anionic (co)polymerisation of styrene or diene monomers with alkali metal alkyl (I) as initiator is carried out in the presence of an alkyl or aryl of an at least divalent metal as retarder (II). Also claimed are (a) an initiator containing (I) and (II); (b) a solution of the initiator in a (cyclo)aliphatic hydrocarbon; and (c) styrene polymers obtained by this process.