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47 条记录 (耗时 0.026 秒)

    Preparation of finely divided polymer powders
    3.
    发明授权
    Preparation of finely divided polymer powders 失效
    精细分散的聚合物粉末的制备

    公开(公告)号：US5795926A

    公开(公告)日：1998-08-18

    申请号：US795307

    申请日：1991-11-21

    申请人： Manfred Niessner ,  Norbert Grund ,  Wilfried Heide ,  Heinrich Hartmann

    发明人： Manfred Niessner ,  Norbert Grund ,  Wilfried Heide ,  Heinrich Hartmann

    IPC分类号： B01D21/01 ,  C02F1/54 ,  C02F1/56 ,  C02F11/00 ,  C02F11/14 ,  C08F2/32 ,  C08F6/00 ,  C08F6/24 ,  C09K3/00 ,  C08K00/00

    CPC分类号： C02F1/56 ,  C02F1/54 ,  C08F2/32 ,  Y10T428/2982

    摘要： A process is described for the preparation of finely divided polymer powders by polymerizing water-soluble monomers in the aqueous phase of a water-in-oil emulsion in the presence of water-in-oil emulsifiers and polymerization initiators, removing the water from the resultant water-in-oil polymer suspension by azeotropic distillation, and isolating the suspended, finely divided polymer powder, either the polymerization of the water-soluble monomers being carried out in the presence of from 0.1 to 10% by weight, based on the monomers employed in the polymerization, of protective colloids, or the protective colloids being added to the water-in-oil polymer suspension after the polymerization is complete. The polymerization is preferably carried out in the presence of surfactant. The finely divided pulverulent polymers are used as flocculants or thickeners for aqueous systems.

    摘要翻译： 描述了一种通过在油包水乳化剂和聚合引发剂的存在下在水包油乳液的水相中聚合水溶性单体来制备细碎聚合物粉末的方法，从所得物中除去水 通过共沸蒸馏将油包水聚合物悬浮液分离，并分离悬浮的细碎聚合物粉末，基于所用的单体，水溶性单体的聚合在0.1至10重量％的存在下进行 在保护胶体的聚合中，或在聚合完成后加入到油包水聚合物悬浮液中的保护胶体。 聚合优选在表面活性剂存在下进行。 精细分散的粉末聚合物用作水系统的絮凝剂或增稠剂。

    Preparation of bead polymers from water-soluble, ethylenically unsaturated monomers
    4.
    发明授权
    Preparation of bead polymers from water-soluble, ethylenically unsaturated monomers 失效
    从水溶性烯属不饱和单体制备珠聚合物

    公开(公告)号：US4879361A

    公开(公告)日：1989-11-07

    申请号：US168825

    申请日：1988-03-16

    申请人： Gerd Rehmer ,  Manfred Niessner ,  Wilfried Heide ,  Heinrich Hartmann ,  Karl-Clemens Peters

    发明人： Gerd Rehmer ,  Manfred Niessner ,  Wilfried Heide ,  Heinrich Hartmann ,  Karl-Clemens Peters

    IPC分类号： C08F2/00 ,  C08F2/32 ,  C08F257/00

    CPC分类号： C08F2/32

    摘要： Polymers in bead form are prepared from water-soluble ethylenically unsaturated monomers by a reverse suspension polymerization of a liquid in the presence of polymerization initiators and protective colloids obtainable by grafting polymers (A) containing (a) aromatic monovinyl monome from 40 to 100% by weight (b) C.sub.3-6 monoethylenically unsaturated carboxylic acid and/or maleic anhydride from 0 to 60% by weight (c) other monoethylenically unsaturated monomers from 0-20% by weight, as copolymerized units with the proviso that the sum of the weight (a) to (c) is always 100 and the polymer (A) has a molecular weight (number average) from 500 to 20,000 and a hydrogenation iodine number from 1.3 to 51 with a fixed monomer mixture at given concentration levels.

    摘要翻译： 珠粒形式的聚合物通过在聚合引发剂存在下通过液体的反向悬浮聚合和保护性胶体由水溶性烯键式不饱和单体制备，所述保护胶体可通过将含有（a）芳族单乙烯基单体的聚合物（A）从40至100％ 重量（b）0-6％重量的（c）C 3-6单烯属不饱和羧酸和/或马来酸酐，（c）0-20％重量的其它单烯属不饱和单体作为共聚单元，条件是重量之和 （a）〜（c）总是为100，聚合物（A）的分子量（数均）为500〜20,000，加氢碘值为1.3〜51。

    Preparation of bead polymers based on water-soluble ethylenically unsaturated monomers by reverse suspension polymerization
    6.
    发明授权
    Preparation of bead polymers based on water-soluble ethylenically unsaturated monomers by reverse suspension polymerization 失效
    通过反相悬浮聚合制备基于水溶性烯属不饱和单体的珠粒聚合物

    公开(公告)号：US4739009A

    公开(公告)日：1988-04-19

    申请号：US36737

    申请日：1987-04-10

    申请人： Wilfried Heide ,  Heinrich Hartmann ,  Christos Vamvakaris

    发明人： Wilfried Heide ,  Heinrich Hartmann ,  Christos Vamvakaris

    IPC分类号： C08F2/32

    CPC分类号： C08F2/32

    摘要： Bead polymers are prepared by reverse suspension polymerization by a process in which an aqueous solution of water-soluble ethylenically unsaturated monomers are polymerized in an aliphatic hydrocarbon using an inorganic suspending agent based on a modified finely divided mineral and, in addition, from 0.1 to 5% by weight, based on the monomers used, of a nonionic surfactant, in the presence of a polymerization initiator, with the formation of a water-in-oil polymer suspension.

    摘要翻译： 珠粒聚合物是通过反应悬浮聚合制备的，其中水溶性烯键式不饱和单体的水溶液是使用基于改性细碎矿物的无机悬浮剂在脂族烃中聚合的方法制备的，另外还有0.1至5 在聚合引发剂的存在下，基于所用单体的非离子表面活性剂重量％，形成油包水聚合物悬浮液。

    Preparation of finely divided, gel-like, water-swellable copolymers
    7.
    发明授权
    Preparation of finely divided, gel-like, water-swellable copolymers 失效
    精细分散，凝胶状，水溶性共聚物的制备

    公开(公告)号：US5149750A

    公开(公告)日：1992-09-22

    申请号：US438876

    申请日：1989-11-20

    申请人： Manfred Niessner ,  Stefan Wickel ,  Wilfried Heide ,  Heinrich Hartmann

    发明人： Manfred Niessner ,  Stefan Wickel ,  Wilfried Heide ,  Heinrich Hartmann

    IPC分类号： A61L15/60 ,  C08F2/10 ,  C08F2/20 ,  C08F2/24 ,  C08F220/04 ,  C08F220/06 ,  C08F290/00 ,  C08F290/04 ,  C08F299/02

    CPC分类号： C08F2/10 ,  A61L15/60 ,  Y10S526/909 ,  Y10S526/93

    摘要： Finely divided, gel-like, water-swellable copolymers are prepared by copolymerizing(a) 100 parts by weight of water-soluble, monoethylenically unsaturated monomers,(b) from 0.01 to 5 parts by weight of monomers containing two or more ethylenically unsaturated double bonds and(c) from 0 to 20 parts by weight of water-insoluble, monoethylenically unsaturated monomersin 20-80% strength by weight aqueous solution in the presence of a polymerization initiator and from 0.1 to 10% by weight, based on the monomers used in the copolymerization, of a surfactant, by a process in which the monomers are copolymerized in the presence of initially from 0 to 50% by weight of the amount of surfactant to a conversion of not less than 60%, the remaining amount of surfactant is then added to the reaction mixture and the copolymerization is completed and the resulting gel particles dried.

    摘要翻译： 通过共聚合（a）100重量份的水溶性单烯属不饱和单体，（b）0.01至5重量份含有两个或更多个烯属不饱和双键的单体，制备细分，凝胶状，水溶胀性共聚物 键，和（c）0-20重量份的在聚合引发剂存在下的20-80％重量比的水溶液和基于单体的0.1-10％重量的水不溶性单烯属不饱和单体 用于表面活性剂的共聚中，其中单体在最初为0至50重量％的表面活性剂的量存在下进行共聚，转化率不低于60％，表面活性剂的剩余量 然后加入到反应混合物中，共聚完成，所得凝胶颗粒干燥。