公开(公告)号：AT260937T

公开(公告)日：2004-03-15

申请号：AT00974512

申请日：2000-11-10

Applicant: BASF AG

Inventor： HEIDE WILFRIED ,  WICKEL STEFAN ,  DANIEL THOMAS ,  NILGES JOACHIM ,  HOFMANN JUERGEN

IPC: B01J14/00 ,  B01J19/00 ,  B01J19/20 ,  C08F2/01 ,  C08F2/10 ,  C08F220/00

公开(公告)号：BR0015680A

公开(公告)日：2002-08-06

申请号：BR0015680

申请日：2000-11-10

Applicant: BASF AG

Inventor： HEIDE WILFRIED ,  WICKEL STEFAN ,  DANIEL THOMAS ,  NILGES JOACHIM ,  HOFMANN JURGEN

IPC: B01J14/00 ,  B01J19/00 ,  B01J19/20 ,  C08F2/01 ,  C08F2/10 ,  C08F220/00

公开(公告)号：DE19955861A1

公开(公告)日：2001-05-23

申请号：DE19955861

申请日：1999-11-20

Applicant: BASF AG

Inventor： HEIDE WILFRIED ,  WICKEL STEFAN ,  DANIEL THOMAS ,  NILGES JOACHIM ,  HOFMANN JUERGEN

IPC: B01J14/00 ,  B01J19/00 ,  B01J19/20 ,  C08F2/01 ,  C08F2/10 ,  C08F220/00 ,  C08F220/06 ,  C08F220/56

Abstract: In a process for the continuous production of crosslinked, finely-divided gel polymers by co polymerisation of water-soluble mono-unsaturated monomers and poly-unsaturated comonomers in a multi-screw mixer-kneader, at least 5% of the heat of reaction is removed by evaporation of water, at least 25% with the product and the rest by cooling the reactor. A process for the continuous production of crosslinked, finely-divided gel polymers (I) involves the co polymerisation of (a) water-soluble mono-unsaturated monomers, (b) 0.001-5 mol% (based on a) monomers with at least two ethylenic double bonds and (c) 0-20 mol% water-insoluble mono-unsaturated monomers in 20-80 wt% aqueous solution in presence of initiators at 0-140 deg C, by feeding the monomer solution with the initiator and inert gas into a mixer-kneader with at least two parallel rotating shafts fitted with several kneading and transporting elements to move the materials through the mixer. In this process, at least 5% of the heat of reaction is removed by evaporation of water from the reaction mixture, at least 25% is removed with the product and the rest is removed by cooling the reactor walls.