公开(公告)号：AU748776B2

公开(公告)日：2002-06-13

申请号：AU8079998

申请日：1998-08-18

Applicant: BASF AG

Inventor： HUBINGER WOLFGANG ,  WUNDER RAINER ,  BAUER GERHARD ,  DOBBELAAR JOHANNES ,  LAWRENZ SVEN ,  MUESELER FRANZ-JOSEF ,  NAHSTOLL JURGEN ,  RUPANER ROBERT ,  SCHMIDT CHRISTIAN-ULRICH

IPC: B01D17/00 ,  B01J19/00 ,  B01J19/18 ,  B01J19/24 ,  C08F6/00 ,  C08J3/03 ,  B01D47/04

Abstract: A method for cooling dispersions or liquids (D/L) after a deodorising process comprising (a) passing steam through the D/L in a boiler (1), causing it to foam, (b) taking the foam from the top of the boiler into an evacuated separator (4) through a jet (5) and thus breaking the foam, (c) condensing the water vapour from the foam in a heat exchanger (8) and removing organic volatiles, and (d) returning the broken foam to (1). This process is continued until the D/L is deodorised to the required extent, then the hot D/L is cooled by transferring it from the bottom of (1) to the evacuated separator (4) via jet (5), the water vapour produced is condensed in (8) as before, and the cooled D/L is taken off at the bottom of (4).

公开(公告)号：AU8079998A

公开(公告)日：1999-02-25

申请号：AU8079998

申请日：1998-08-18

Applicant: BASF AG

Inventor： HUBINGER WOLFGANG ,  WUNDER RAINER ,  BAUER GERHARD ,  DOBBELAAR JOHANNES ,  LAWRENZ SVEN ,  MUESELER FRANZ-JOSEF ,  NAHSTOLL JURGEN ,  RUPANER ROBERT ,  SCHMIDT CHRISTIAN-ULRICH

IPC: B01D17/00 ,  B01J19/00 ,  B01J19/18 ,  B01J19/24 ,  C08F6/00 ,  C08J3/03 ,  B01D47/04

Abstract: A method for cooling dispersions or liquids (D/L) after a deodorising process comprising (a) passing steam through the D/L in a boiler (1), causing it to foam, (b) taking the foam from the top of the boiler into an evacuated separator (4) through a jet (5) and thus breaking the foam, (c) condensing the water vapour from the foam in a heat exchanger (8) and removing organic volatiles, and (d) returning the broken foam to (1). This process is continued until the D/L is deodorised to the required extent, then the hot D/L is cooled by transferring it from the bottom of (1) to the evacuated separator (4) via jet (5), the water vapour produced is condensed in (8) as before, and the cooled D/L is taken off at the bottom of (4).

公开(公告)号：AU9626398A

公开(公告)日：1999-04-05

申请号：AU9626398

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 JURGEN ,  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.