公开(公告)号：ES2207956T3

公开(公告)日：2004-06-01

申请号：ES99934213

申请日：1999-01-26

Applicant: BASF AG

Inventor： FISCHER WOLFGANG ,  BUCHNER EUGEN-WALTER ,  DEIMLING AXEL ,  GAUSEPOHL HERMANN ,  SCHADE CHRISTIAN

IPC: C08F2/00 ,  C08F279/02 ,  C08F287/00 ,  B01J19/18

Abstract: A process for preparing impact-modified styrene polymers (HIPS) omprises anionic polymerization of styrene in the presence of a rubber in one or more polymerization reactors in succession. The rubber is prepared in solution in an immediately upstream process. The heat of polymerization is utilized to remove the solvent for the rubber, this solvent having a boiling point lower than those of styrene and ethylbenzene, from at least one of the polymerization reactors via distillation with distillative cooling, and the solvent is reintroduced into the process of rubber preparation.

公开(公告)号：AU3250899A

公开(公告)日：1999-08-23

申请号：AU3250899

申请日：1999-01-26

Applicant: BASF AG

Inventor： FISCHER WOLFGANG ,  BUCHNER EUGEN-WALTER ,  DEIMLING AXEL ,  GAUSEPOHL HERMANN ,  SCHADE CHRISTIAN

IPC: B01J19/18 ,  C08F2/00 ,  C08F279/02 ,  C08F287/00

Abstract: A process for preparing impact-modified styrene polymers (HIPS) omprises anionic polymerization of styrene in the presence of a rubber in one or more polymerization reactors in succession. The rubber is prepared in solution in an immediately upstream process. The heat of polymerization is utilized to remove the solvent for the rubber, this solvent having a boiling point lower than those of styrene and ethylbenzene, from at least one of the polymerization reactors via distillation with distillative cooling, and the solvent is reintroduced into the process of rubber preparation.