公开(公告)号：ID24215A

公开(公告)日：2000-07-13

申请号：ID20000486

申请日：1998-09-17

Applicant: BASF AG

Inventor： RUPANER ROBERT ,  LAWRENZ SVEN ,  DOBBELAAR JOHANNES ,  BAUER GERHARD ,  MUESLER FRANSZ-JOSEF ,  KIRCHNER WERNER ,  MORRISON B R ,  NAHSTOLL JURGRN ,  MEISTER MARTIN ,  BACHER REINHARD ,  HUBINGER 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.