公开(公告)号：DE59807759D1

公开(公告)日：2003-05-08

申请号：DE59807759

申请日：1998-09-17

Applicant: BASF AG

Inventor： RUPANER ROBERT ,  LAWRENZ SVEN ,  DOBBELAAR JOHANNES ,  BAUER GERHARD ,  MUESELER FRANZ-JOSEF ,  KIRCHNER WERNER ,  MORRISON RONALD ,  NAHSTOLL JUERGEN ,  MEISTER MARTIN ,  BAECHER REINHARD ,  HUEBINGER WOLFGANG ,  SCHUMACHER GERHARD

IPC: C08F6/00

Abstract: A process is described for reducing the residual monomer content in a liquid solution, mixture, melt, suspension or dispersion of a polymer by postpolymerization with addition of a redox initiator system at a reaction temperature appropriate to it and with an extremely short mixing time of the liquid system in the production reactor by metering-gradually, in portions or continuously-at least one of the redox initiator components required to initiate polymerization of the residual monomers over a period (metering time) which is from about 10 to 250 times the mixing time of the liquid system in said reactor.

公开(公告)号：DE19842482A1

公开(公告)日：2000-03-23

申请号：DE19842482

申请日：1998-09-16

Applicant: BASF AG

Inventor： FULL JOACHIM ,  ARMBRUSTER HARALD ,  REHMER GERD ,  NAHSTOLL JUERGEN

IPC: G05B15/02 ,  G05B19/418 ,  G06Q50/00 ,  B01J19/00

公开(公告)号：DE59903724D1

公开(公告)日：2003-01-23

申请号：DE59903724

申请日：1999-09-14

Applicant: BASF AG

Inventor： FULL JOACHIM ,  REHMER GERD ,  ARMBRUSTER HARALD ,  NAHSTOLL JUERGEN

IPC: G05B15/02 ,  G05B19/418 ,  G06Q50/00

公开(公告)号：BR9812087A

公开(公告)日：2000-09-26

申请号：BR9812087

申请日：1998-09-17

Applicant: BASF AG

Inventor： RUPANER ROBERT ,  LAWRENZ SVEN ,  DOBBELAAR JOHANNES ,  BAUER GERHARD ,  MUESELER FRANZ-JOSEF ,  KIRCHNER WERNER ,  MORRISON BRADLEY RONALD ,  NAHSTOLL JUERGEN ,  MEISTER MARTIN ,  BOCHER REINHARD ,  HUEBINGER WOLFGANG H ,  SCHUMACHER GERHARD

IPC: C08F6/00

Abstract: A process is described for reducing the residual monomer content in a liquid solution, mixture, melt, suspension or dispersion of a polymer by postpolymerization with addition of a redox initiator system at a reaction temperature appropriate to it and with an extremely short mixing time of the liquid system in the production reactor by metering-gradually, in portions or continuously-at least one of the redox initiator components required to initiate polymerization of the residual monomers over a period (metering time) which is from about 10 to 250 times the mixing time of the liquid system in said reactor.

公开(公告)号：DE19856590A1

公开(公告)日：2000-06-15

申请号：DE19856590

申请日：1998-12-08

Applicant: BASF AG

Inventor： DOBBELAAR JOHANNES ,  RUPANER ROBERT ,  GERBERDING KARL ,  NEUTZNER JOSEF ,  VISSEREN MARINUS ,  SCHWAB RUDOLF ,  NAHSTOLL JUERGEN ,  MUESELER FRANZ-JOSEF ,  BAUER GERHARD ,  HARTMANN JUERGEN ,  MEISTER MARTIN ,  LAWRENZ SVEN

IPC: C08F2/00 ,  C08F2/22

Abstract: A process for the emulsion polymerization of olefinically saturated monomers comprises heating the reaction mixture by the addition of heated water or steam. A process to reduce the wall coating and coagulate formation during the radically initiated polymerization of olefinically unsaturated monomers in aqueous emulsions at a polymerization temperature of 35-120 deg C comprises heating the reaction mixture to at least the polymerization temperature by the addition of heated water and/or steam.