CONTINUOUS PROCESS FOR THE PRODUCTION OF A SUPERABSORBENT POLYMER
    1.
    发明申请
    CONTINUOUS PROCESS FOR THE PRODUCTION OF A SUPERABSORBENT POLYMER 有权
    用于生产超吸收聚合物的连续方法

    公开(公告)号:US20100105808A1

    公开(公告)日:2010-04-29

    申请号:US12575071

    申请日:2009-10-07

    IPC分类号: C08F2/16

    CPC分类号: C08F2/14 C08F2/16

    摘要: The present invention relates to a continuous process for the production of a superabsorbent polymer comprising providing an acidic liquid aqueous monomer mixture containing dissolved oxygen; continuously feeding the aqueous monomer mixture to a reactor; introducing a source of carbonate or hydrogen carbonate into the aqueous monomer mixture prior to entry into the reactor thereby forming a gas phase comprising carbon dioxide and at least a part of the dissolved oxygen, the gas phase being dispersed in the liquid phase; subjecting the gas/liquid mixture to at least partial phase separation immediately prior to or after entry into the reactor and at least partially removing the separated gaseous phase; subjecting the liquid phase in the reactor to free-radical polymerization to obtain the superabsorbent polymer, and continuously removing the superabsorbent polymer from the reactor.

    摘要翻译: 本发明涉及制备超吸收性聚合物的连续方法,其包括提供含有溶解氧的酸性液体含水单体混合物; 连续地将含水单体混合物进料到反应器中; 在进入反应器之前将碳酸盐或碳酸氢盐引入含水单体混合物中,从而形成包含二氧化碳和至少一部分溶解氧的气相,气相分散在液相中; 在气体/液体混合物进入反应器之前或之后立即进行至少部分相分离,并至少部分除去分离的气相; 将反应器中的液相进行自由基聚合以获得超吸收性聚合物,并从反应器中连续除去超吸收性聚合物。

    Powdery, crosslinked absorbent polymers, method for the production thereof, and their use
    2.
    发明授权
    Powdery, crosslinked absorbent polymers, method for the production thereof, and their use 有权
    粉状,交联的吸收性聚合物,其制备方法及其用途

    公开(公告)号:US06620889B1

    公开(公告)日:2003-09-16

    申请号:US09914466

    申请日:2001-08-29

    IPC分类号: C08F842

    摘要: The invention relates to crosslinked polymerizates which are capable of absorbing, which are based on partially neutralized, monoethylenically unsaturated monomers that carry acidic groups, which exhibit improved properties, in particular, with regard to their ability to transport liquids when in a swollen state, and which have been subsequently crosslinked on the surface thereof with a combination consisting of an organic crosslinker compound, with the exception of polyols, and of a cation provided in the form of a salt in an aqueous solution.

    摘要翻译: 本发明涉及能够吸收的交联聚合物,其基于部分中和的携带酸性基团的单烯属不饱和单体,其表现出改进的性能,特别是关于其在膨胀状态下运输液体的能力,以及 随后在其表面上用除了多元醇之外的有机交联剂化合物和在水溶液中以盐形式提供的阳离子的组合交联。

    Process for the production of a superabsorbent polymer
    3.
    发明授权
    Process for the production of a superabsorbent polymer 有权
    用于生产超吸收性聚合物的方法

    公开(公告)号:US08063121B2

    公开(公告)日:2011-11-22

    申请号:US12575124

    申请日:2009-10-07

    IPC分类号: C08G18/08

    CPC分类号: C08F2/16

    摘要: The present invention relates to a process for the production of a superabsorbent polymer comprising preparing an aqueous mixture of monomers selected to provide after polymerization a superabsorbent polymer; feeding said monomer mixture to a reactor; subjecting the aqueous monomer mixture in the reactor to free-radical polymerization to obtain a superabsorbent polymer gel; removing the superabsorbent polymer gel from the reactor; and drying the superabsorbent polymer gel. Where at least one off-gas stream removed from any stage of the process is subjected to scrubbing with a basic aqueous solution prior to venting to obtain an aqueous scrubber solution that is at least partially recycled to any of the above steps of the process.

    摘要翻译: 本发明涉及一种制备超吸收性聚合物的方法,包括制备选择用于在聚合后提供超吸收性聚合物的单体的水性混合物; 将所述单体混合物进料到反应器中; 使反应器中的含水单体混合物进行自由基聚合以获得超吸收性聚合物凝胶; 从反应器中除去超吸收性聚合物凝胶; 并干燥超吸收聚合物凝胶。 在从该方法的任何阶段除去的至少一个废气流在排气之前用碱性水溶液进行洗涤,以获得至少部分地循环到本方法的任何上述步骤的水性洗涤器溶液。

    PROCESS FOR THE PRODUCTION OF A SUPERABSORBENT POLYMER
    5.
    发明申请
    PROCESS FOR THE PRODUCTION OF A SUPERABSORBENT POLYMER 有权
    制备超吸收聚合物的方法

    公开(公告)号:US20100099799A1

    公开(公告)日:2010-04-22

    申请号:US12575146

    申请日:2009-10-07

    IPC分类号: C08F2/16

    CPC分类号: C08F2/16 C08F2/00

    摘要: The present invention relates to a process for the production of a superabsorbent polymer comprising preparing an aqueous mixture of monomers selected to provide after polymerization a superabsorbent polymer; feeding said monomer mixture to a reactor; subjecting the aqueous monomer mixture in the reactor to free-radical polymerization to obtain a superabsorbent polymer gel; removing the superabsorbent polymer from the reactor; and working-up the superabsorbent polymer removed from the reactor to obtain a final product, whereby a basic aqueous medium comprising carbonate and/or hydrogen carbonate is fed to the superabsorbent polymer gel.

    摘要翻译: 本发明涉及一种制备超吸收性聚合物的方法,包括制备选择用于在聚合后提供超吸收性聚合物的单体的水性混合物; 将所述单体混合物进料到反应器中; 使反应器中的含水单体混合物进行自由基聚合以获得超吸收性聚合物凝胶; 从反应器中除去超吸收性聚合物; 并处理从反应器中除去的超吸收性聚合物以获得最终产物,由此将包含碳酸盐和/或碳酸氢盐的碱性水性介质加入到超吸收性聚合物凝胶中。

    Powdery, cross-linked absorbent polymers, method for the production thereof, and their use
    6.
    发明授权
    Powdery, cross-linked absorbent polymers, method for the production thereof, and their use 失效
    粉状,交联的吸收性聚合物,其制备方法及其用途

    公开(公告)号:US08445596B2

    公开(公告)日:2013-05-21

    申请号:US11673137

    申请日:2007-02-09

    IPC分类号: C08L33/02 C08F8/00

    摘要: The invention relates to crosslinked polymerizates which are capable of absorbing, which are based on partially neutralized, monoethylenically unsaturated monomers that carry acidic groups, which exhibit improved properties, in particular, with regard to their ability to transport liquids when in a swollen state, and which have been subsequently crosslinked on the surface thereof with a combination consisting of an organic crosslinker compound, with the exception of polyols, and of a cation provided in the form of a salt in an aqueous solution.

    摘要翻译: 本发明涉及能够吸收的交联聚合物,其基于部分中和的携带酸性基团的单烯属不饱和单体,其表现出改进的性能,特别是关于其在膨胀状态下运输液体的能力,以及 随后在其表面上用除了多元醇之外的有机交联剂化合物和在水溶液中以盐形式提供的阳离子的组合交联。

    PROCESS FOR RECYCLING POLYMER FINES
    7.
    发明申请
    PROCESS FOR RECYCLING POLYMER FINES 审中-公开
    回收聚合物精华的方法

    公开(公告)号:US20120302445A1

    公开(公告)日:2012-11-29

    申请号:US13574945

    申请日:2011-01-18

    摘要: The present invention relates to a process for producing a water-absorbing polymer structure based on acid group-containing monomers, comprising the process steps of: i) providing a monomer solution comprising the optionally partly neutralized, acid group-containing monomer; ii) mixing the monomer solution with fines which consist at least to an extent of 90% by weight, based on the total weight of the fines, of particles having a particle size of less than 850 μm, to obtain a monomer solution mixed with fines; wherein the mixing in process step ii) is effected in a mixer in which a first stream of the fines and at least one further stream of the monomer solution are passed from different directions simultaneously to a rotating mixing tool.

    摘要翻译: 本发明涉及一种基于含有酸基团的单体制备吸水聚合物结构的方法,包括以下工艺步骤:i)提供包含任选部分中和的含酸基单体的单体溶液; ii)将单体溶液与细粒混合,细粉至少达到基于细粉总重量的90重量%,粒径小于850μm的颗粒,以获得与细粒混合的单体溶液 ; 其中工艺步骤ii)中的混合在混合器中进行,其中细粉的第一流和单体溶液的至少一个另外的流同时从不同的方向通过到旋转的混合工具。

    PROCESS FOR THE PRODUCTION OF A SUPERABSORBENT POLYMER
    9.
    发明申请
    PROCESS FOR THE PRODUCTION OF A SUPERABSORBENT POLYMER 有权
    制备超吸收聚合物的方法

    公开(公告)号:US20100105809A1

    公开(公告)日:2010-04-29

    申请号:US12575124

    申请日:2009-10-07

    IPC分类号: C08F2/16

    CPC分类号: C08F2/16

    摘要: The present invention relates to a process for the production of a superabsorbent polymer comprising preparing an aqueous mixture of monomers selected to provide after polymerization a superabsorbent polymer; feeding said monomer mixture to a reactor; subjecting the aqueous monomer mixture in the reactor to free-radical polymerization to obtain a superabsorbent polymer gel; removing the superabsorbent polymer gel from the reactor; and drying the superabsorbent polymer gel. Where at least one off-gas stream removed from any stage of the process is subjected to scrubbing with a basic aqueous solution prior to venting to obtain an aqueous scrubber solution that is at least partially recycled to any of the above steps of the process.

    摘要翻译: 本发明涉及一种制备超吸收性聚合物的方法,包括制备选择用于在聚合后提供超吸收性聚合物的单体的水性混合物; 将所述单体混合物进料到反应器中; 使反应器中的含水单体混合物进行自由基聚合以获得超吸收性聚合物凝胶; 从反应器中除去超吸收性聚合物凝胶; 并干燥超吸收聚合物凝胶。 在从该方法的任何阶段除去的至少一个废气流在排气之前用碱性水溶液进行洗涤,以获得至少部分地循环到本方法的任何上述步骤的水性洗涤器溶液。

    Powdery, cross-linked polymers which absorb aqueous liquids and blood, method for the production thereof and their use
    10.
    发明授权
    Powdery, cross-linked polymers which absorb aqueous liquids and blood, method for the production thereof and their use 有权
    用于吸收含水液体和血液的粉末状交联聚合物,其生产方法及其用途

    公开(公告)号:US06605673B1

    公开(公告)日:2003-08-12

    申请号:US09914470

    申请日:2001-08-29

    IPC分类号: C08F842

    摘要: The invention relates to crosslinked polymerizates which are capable of absorbing, which are based on partially neutralized, monoethylenically unsaturated monomers that carry acidic groups, which exhibit improved properties, in particular, with regard to their ability to transport liquids when in a swollen state, and which are subsequently crosslinked on the surface thereof at temperatures ≧150° C. with a combination consisting of polyol used as a subsequent crosslinker compound and of a cation provided in the form of an aqueous solution.

    摘要翻译: 本发明涉及能够吸收的交联聚合物,其基于部分中和的携带酸性基团的单烯属不饱和单体,其表现出改进的性能,特别是关于其在膨胀状态下运输液体的能力,以及 其随后在温度> 150℃下在其表面上与由用作随后的交联剂化合物的多元醇组成的组合和以水溶液形式提供的阳离子交联。