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公开(公告)号：DE102005042604A1
公开(公告)日：2007-03-08
申请号：DE102005042604
申请日：2005-09-07
Applicant: BASF AG
Inventor： WEISMANTEL MATTHIAS , MARCO MICHAEL DE , ESBROECK DOMINICUS VAN , POSSEMIERS KARL J , KAEY RONNY DE
Abstract: Neutralization procedure comprises partially neutralizing at least an ethylenically unsaturated carboxylic acid compound with a base, where the neutralization takes place in a continuous process and the neutralized solution is at less than 70[deg]C. Independent claims are included for: (1) a procedure for production of water-absorbing polymer comprising a neutralization procedure; and (2) a device for continuous neutralization comprising a circular pipe (R), at least a first supply pipe (Z 1) and second supply pipe (Z 2) in the circular pipe, at least a heat exchanger (W 1) in the circular pipe, where the heat exchanger flows directly behind the supply pipes, at least a conduit (A), which flows directly behind the heat exchanger, a pump (P) and optionally a container (B) between the heat exchanger and the conduit.
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Patent Agency Ranking
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
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.
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公开(公告)号：DE102005042606A1
公开(公告)日：2007-03-08
申请号：DE102005042606
申请日：2005-09-07
Applicant: BASF AG
Inventor： MARCO MICHAEL DE , WEISMANTEL MATTHIAS , POSSMIERS KARL J , MEES FILIP , KAEY RONNY DE
Abstract: The invention relates to a neutralization process in which at least one ethylenically unsaturated carboxylic acid is preneutralized at least partly with a base, wherein the preneutralized solution is divided into at least two part-solutions and at least one part-solution is aftertreated so as to form part-solutions with different degree of neutralization and/or solids content, and also to an apparatus for carrying out the process.
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公开(公告)号：DE102005042605A1
公开(公告)日：2007-03-08
申请号：DE102005042605
申请日：2005-09-07
Applicant: BASF AG
Inventor： WEISMANTEL MATTHIAS , CLAESSENS LOUIS , POSSEMIERS KARL J , KAEY RONNY DE
Abstract: The invention relates to a neutralization process in which at least one ethylenically unsaturated carboxylic acid is neutralized at least partly with a base and at least one stream of the neutralization is determined continuously, and also to an apparatus for carrying out the process.
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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
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.
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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
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.
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