公开(公告)号：DE59805252D1

公开(公告)日：2002-09-26

申请号：DE59805252

申请日：1998-06-18

Applicant: BASF AG

Inventor： FISCHER MICHAEL ,  MORRISON RONALD ,  SUTORIS FRIEDRICH ,  DURANT YVON

IPC: C08F2/00 ,  C08F2/22 ,  C08F2/24 ,  C08F4/00 ,  C08F4/04 ,  C08F4/28 ,  C08F4/34

Abstract: A process of free-radically initiated aqueous emulsion polymerization, in which monomers are polymerized in the presence of a N-oxyl radical and by means of special free-radical polymerization initiators at more than 100° C. and at pressures above the vapor pressure of the polymerization mixture.

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：DE59807748D1

公开(公告)日：2003-05-08

申请号：DE59807748

申请日：1998-06-18

Applicant: BASF AG

Inventor： MORRISON RONALD ,  MATHAUER KLEMENS ,  FISCHER MICHAEL ,  DURANT YVON

IPC: C08F2/22 ,  C08F4/00

Abstract: A process of free-radically initiated aqueous emulsion polymerization, in which polymerization is conducted in the presence of a stable N-oxyl radical and the diameter of the monomer droplets in disperse distribution in the aqueous medium is