公开(公告)号：DE102005042609A1

公开(公告)日：2007-03-08

申请号：DE102005042609

申请日：2005-09-07

Applicant: BASF AG

Inventor： WEISMANTEL MATTHIAS ,  MARCO MICHAEL DE ,  DAIS ANDREAS ,  ESBROECK DOMINICUS VAN ,  POSSEMIERS KARL J ,  KAEY RONNY DE ,  MIERT LEO VAN

IPC: C08F2/04 ,  C08F2/01 ,  C08F2/38 ,  C08F20/06

Abstract: The invention relates to a process for continuously preparing water-absorbing polymer particles by mixing a monomer solution with a redox initiator consisting of at least one oxidizing agent and at least one reducing agent and polymerizing it, wherein the monomer solution is mixed with at least one oxidizing agent upstream of the polymerization reactor and the at least one reducing agent is metered into the polymerization reactor, and also to an apparatus for performing the process.

公开(公告)号：DE102005042608A1

公开(公告)日：2007-03-08

申请号：DE102005042608

申请日：2005-09-07

Applicant: BASF AG

Inventor： WEISMANTEL MATTHIAS ,  MARCO MICHAEL DE ,  DAIS ANDREAS ,  ESBROECK DOMINICUS VAN ,  POSSEMIERS KARL J ,  KAEY RONNY DE ,  MIERT LEO VAN

IPC: C08F2/44 ,  C08F2/01 ,  C08F20/06

Abstract: The present invention relates to a process for continuously preparing water-absorbing polymers by mixing a monomer solution with at least one crosslinker and polymerizing the resulting mixture, wherein the residence time of the mixture between the addition of the at least one crosslinker and the entry into the polymerization reactor is less than 180 seconds, and also to an apparatus for performing the process.

公开(公告)号：DE102005042607A1

公开(公告)日：2007-03-08

申请号：DE102005042607

申请日：2005-09-07

Applicant: BASF AG

Inventor： WEISMANTEL MATTHIAS ,  FUNK RUEDIGER ,  ESBROECK DOMINICUS VAN ,  POSSEMIERS KARL J ,  KAEY RONNY DE ,  MIERT LEO VAN

IPC: C08F2/04 ,  C08F2/01 ,  C08F20/06

Abstract: The invention relates to a process for preparing water-absorbing polymer particles, comprising the inertization of monomer solutions, wherein the monomer solution, based on the dissolved monomer, comprises from 0.001 to 0.016% by weight of at least one polymerization inhibitor and at least 50% by volume of the inert gas used to inertize the monomer solution is transferred into the polymerization reactor together with the inertized monomer solution, and also to apparatus for performing the process.