公开(公告)号：US5258473A

公开(公告)日：1993-11-02

申请号：US663019

申请日：1991-03-01

申请人： Manfred Niessner ,  Stefan Wickel ,  Walter Schneider ,  Juergen Beck ,  Heinrich Hartmann ,  Thomas Meyer

发明人： Manfred Niessner ,  Stefan Wickel ,  Walter Schneider ,  Juergen Beck ,  Heinrich Hartmann ,  Thomas Meyer

IPC分类号： C08F2/08 ,  C08F2/10 ,  C08F20/06

CPC分类号： C08F2/10

摘要： Finely divided, water-soluble polymers are prepared by polymerization of water-soluble, monoethylenically unsaturated monomers in not less than 20% strength by weight aqueous solution in the presence of a polymerization initiator in a kneader by a process in which from 0.1 to 10% by weight, based on the total monomers, of a surfactant are used in the polymerization, the polymerization initially being carried out to a conversion of the monomers of not less than 60% in the absence of the surfactant or in the presence of not more than 50% of the amount of surfactant, and the remaining amount of surfactant then being added to the reaction mixture and the polymerization completed. The addition of surfactant causes the polymer gel to disintegrate with formation of fine particles.

摘要翻译： 通过在捏合机中聚合引发剂存在下，在不低于20重量％的重量水溶液中聚合水溶性单烯属不饱和单体，通过以下方法制备细分的水溶性聚合物，其中将0.1至10％ 在聚合过程中使用基于总单体的表面活性剂，在不存在表面活性剂的情况下，首先进行单体的转化率至少为60％，或者不超过 50％的表面活性剂，然后将表面活性剂的剩余量加入到反应混合物中并完成聚合。 加入表面活性剂会导致聚合物凝胶与细颗粒的形成分解。

公开(公告)号：US5073282A

公开(公告)日：1991-12-17

申请号：US341441

申请日：1989-04-21

申请人： Syed M. Ahmed

发明人： Syed M. Ahmed

IPC分类号： C08J3/09 ,  C08F2/08 ,  C08F2/44 ,  C08F20/10 ,  C08F20/12 ,  C08F265/04 ,  C08F291/00 ,  C08L25/00 ,  C08L25/04 ,  C10M161/00 ,  C10M171/00 ,  C10M177/00 ,  C10N20/06 ,  C10N40/14

CPC分类号： C08F2/08 ,  C08F265/04 ,  C10M171/001

摘要： Disclosed are electrorheological fluids which display improved stability against sedimentation, reduced current density and good electrorheological responses. In the preferred embodiment of this invention, these electrorheological fluids are prepared from monomers which are polymerized by dispersion polymerization in a low conductivity medium which also serves as the dispersion medium for the fluid.

公开(公告)号：US5070135A

公开(公告)日：1991-12-03

申请号：US337724

申请日：1989-04-13

申请人： Roelof Buter

发明人： Roelof Buter

IPC分类号： C08L33/06 ,  C08F2/08 ,  C08F279/00 ,  C08F279/02 ,  C08L33/04 ,  C08L51/04 ,  C09D133/04 ,  C09D133/06 ,  C09D151/00 ,  C09D151/04

CPC分类号： C08F2/08 ,  Y10S524/923

摘要： The present invention pertains to a dispersion in an organic liquid of an acrylate-based and/or methacylate-based addition polymer stabilized by a graft copolymer of a polybutadiene with particular monomer components grafted thereon. The present invention also pertains to coating compositions based upon such a dispersion and to a process of coating a substrate with the coating composition. Finally, the present invention relates to a process for the preparation of the stabilizer for the dispersion.

公开(公告)号：US5045395A

公开(公告)日：1991-09-03

申请号：US567844

申请日：1990-08-15

申请人： Wolfgang Podszun

发明人： Wolfgang Podszun

IPC分类号： C08F230/08 ,  C08F2/08 ,  C08F8/12 ,  C08F30/08 ,  C08F246/00

CPC分类号： C08F8/12 ,  Y10T428/2982

摘要： Crosslinked bead polymers having an average particle diameter in the range of from 0.5-10 .mu.m and a narrow particle size distribution can be prepared by polymerization of vinyl monomers and silane monomer units which contain a hydrolysable group, the polymerization being carried out in a non-aqueous, polar medium using a free-radical former as the initiator in the presence of a polymer which is soluble in this medium and acts as a dispersant, and furthermore in the presence of a low molecular weight surfactant, and the resulting polymer is then crosslinked by the action of an aqueous acid or base.

摘要翻译： 具有0.5-10μm平均粒径和窄粒度分布的交联珠粒聚合物可以通过含有可水解基团的乙烯基单体和硅烷单体单元的聚合来制备， 水溶液，极性介质，使用自由基形成剂作为引发剂，在可溶于该介质中并用作分散剂的聚合物存在下进一步在低分子量表面活性剂存在下，然后将得到的聚合物 通过酸或碱水溶液的作用进行交联。

公开(公告)号：US5015706A

公开(公告)日：1991-05-14

申请号：US247152

申请日：1988-09-21

申请人： Donald W. McQuigg ,  Heather K. Webb ,  Edward E. Sowers

发明人： Donald W. McQuigg ,  Heather K. Webb ,  Edward E. Sowers

IPC分类号： B01J31/06 ,  C07D213/74 ,  C08F2/08 ,  C08F12/00 ,  C08F26/06 ,  C08F212/14 ,  C08F226/06

CPC分类号： C07D213/74

摘要： A cross-linked polymer-supported 4-(N-benzyl-N-methylamino) pyridine material and process for its preparation in high yield and having effective physical and catalytic properties. The polymer-supported catalyst is characterizd by the suspension copolymerization of an organic phase containing the corresponding vinyl-substituted pyridine monomer, a styrene monomer, and a suitable cross-linking agent and free radical-generating catalyst in the presence of an aqueous phase containing a cellulose ether derivative as the stabilizing agent. The catalyst is further characterized by its yield in excess of 90% by weight and by its predominant and generally spherical and smooth bead form and substantially uniform size that is efficiently hard and durable and possesses sufficient catalytic activity for effective use in acylation, alkylation or other related reactions.

摘要翻译： 交联聚合物负载的4-（N-苄基-N-甲基氨基）吡啶材料及其高产率制备并具有有效物理和催化性能的方法。 聚合物负载的催化剂的特征是在含有相应的乙烯基取代的吡啶单体，苯乙烯单体和合适的交联剂和产生自由基的催化剂的有机相在含有 纤维素醚衍生物作为稳定剂。 催化剂的特征还在于其产率超过90重量％，其主要和通常为球形和平滑的珠粒形式和基本上均匀的尺寸，其有效硬度和耐久性并且具有足够的催化活性，有效用于酰化，烷基化或其它 相关反应。

公开(公告)号：US5010140A

公开(公告)日：1991-04-23

申请号：US363272

申请日：1989-05-31

申请人： Joseph A. Antonelli ,  Christopher Scopazzi ,  Mark M. Doherty

发明人： Joseph A. Antonelli ,  Christopher Scopazzi ,  Mark M. Doherty

IPC分类号： C08F2/08 ,  C08F2/14 ,  C08F2/38 ,  C08F265/06 ,  C08F290/04

CPC分类号： C08F2/08 ,  C08F265/06 ,  C08F290/046

摘要： Stabilized polymer dispersions in which the principal polymer contains a core component of acrylic polymers and stabilizer components which are polymers of ethylenically unsaturated monomers and which are grafted to the core component at the stabilizer ends, can be prepared using a catalytic chain transfer agent containing Co.sup.+2.

摘要翻译： 其中主要聚合物含有丙烯酸聚合物的核心组分和作为烯键式不饱和单体的聚合物的稳定剂组分并且在稳定剂末端被接枝到核心组分的稳定化聚合物分散体可以使用含有Co + 2。

公开(公告)号：US5006590A

公开(公告)日：1991-04-09

申请号：US414174

申请日：1989-09-28

申请人： Hisao Takeda ,  Mutsumi Kawano

发明人： Hisao Takeda ,  Mutsumi Kawano

IPC分类号： C08F2/10 ,  C08F2/08 ,  C08F2/16 ,  C08F2/44 ,  C08F20/34 ,  C08F20/36 ,  C08F20/52 ,  C08F20/60 ,  C08F220/34 ,  C08F220/60 ,  D21H17/37

CPC分类号： C08F220/60 ,  C08F220/34

摘要： The present invention relates to the preparation of a dispersion wherein a copolymer comprising an acrylic monomer containing a dialkylbenzylammonium group is dispersed in an aqueous solution of a salt as fine particle. Two cationic polymers are used in the polymerization of the above monomer in the aqueous solution of a salt. One of the cationic polymers is a (co)polymer comprising an acrylic monomer containing a trialkylammonium group which is soluble both in the aqueous solution of a salt and in water, while the other thereof is a copolymer comprising an acrylic monomer containing a dialkylbenzylammonium group which is soluble in water, but insoluble in the aqueous solution of a salt. The above aqueous solution of a salt is an aqueous solution of a polyvalent anion salt such as sulfate or phosphate. A dispersion of a water-soluble cationic polymer can be prepared by dissolving the above monomer in the aqueous solution and carrying out the polymerization in the presence of the above two polymers.

摘要翻译： 本发明涉及分散体的制备，其中包含含有二烷基苄基铵基团的丙烯酸单体的共聚物分散在作为细颗粒的盐的水溶液中。 上述单体在盐水溶液中聚合时使用两种阳离子聚合物。 阳离子聚合物之一是包含可溶于盐水溶液和水中的三烷基铵基团的丙烯酸单体的（共）聚合物，而另一种是包含含有二烷基苄基铵基团的丙烯酸单体的共聚物， 溶于水，但不溶于盐的水溶液。 上述盐的水溶液是多价阴离子盐如硫酸盐或磷酸盐的水溶液。 可以通过将上述单体溶解在水溶液中并在上述两种聚合物存在下进行聚合来制备水溶性阳离子聚合物的分散体。

公开(公告)号：US4973632A

公开(公告)日：1990-11-27

申请号：US371174

申请日：1989-06-26

申请人： Kinya Nagasuna ,  Takashi Namba ,  Koji Miyake ,  Kazumasa Kimura ,  Tadao Shimomura

发明人： Kinya Nagasuna ,  Takashi Namba ,  Koji Miyake ,  Kazumasa Kimura ,  Tadao Shimomura

IPC分类号： C08F220/06 ,  A61L15/24 ,  C08F2/08 ,  C08F2/32

CPC分类号： C08F2/32

摘要： This invention relates to a water-absorbent resin of a new, novel type obtained from polymerization of water-soluble ethylenically unsaturated monomer and a process for producing this resin.The water-absorbent resin in this invention has average particle diameter in a specially defined range and a narrow range of particle distribution, being superior in water-absorption capacity, and also, being superior in handling properties in a point of that, when being mixed with liquid, formation of a fish-eye is absent. The water-absorbent resin shows an angle-lacking, non-sphere shape and, in a case of shape like this, is superior in handling properties in a point that being hard in falling off from an basis material.Although the production process is performed to get a water-absorbent resin by carrying out polymerization in a reverse-phase suspension polymerization method, since the aqueous monomer solution is chosen from a specially defined viscosity range and dispersed and suspended by using a specially defined dispersing agent, a water-absorbent resin is easily obtainable wherein, not only the average particle diameter is controlled by adjusting the viscosity of an aqueous monomer solution, but also the particle diameter distribution is narrow. The water-absorbent resin obtained shows that a water-soluble component is small, so that it is very good for sanitary reasons. In this method, it is possible to vary the particle shape by changing up and down the viscosity of an aqueous monomer solution in an above-described specially defined range.The water-absorbent resin in this invention, because of having the above-described properties, is preferably used for sanitary materials and the like.

公开(公告)号：US4972027A

公开(公告)日：1990-11-20

申请号：US271268

申请日：1988-11-15

申请人： Osamu Isozaki ,  Noboru Nakai ,  Shinji Sugiura ,  Satoru Ito ,  Seiji Takami

发明人： Osamu Isozaki ,  Noboru Nakai ,  Shinji Sugiura ,  Satoru Ito ,  Seiji Takami

IPC分类号： C08F2/08 ,  C08K5/00 ,  C09D143/04

CPC分类号： C08K5/0091 ,  C08F2/08 ,  C09D143/04

摘要： Disclosed is a composition curable at a low temperature and characterized in that the composition comprises:(a) a nonaqueous dispersion of a particulate polymer insoluble in an organic liquid and prepared by polymerizing a radical-polymerizable unsaturated monomer in the organic liquid in the presence of a dispersion stabilizer resin, the stabilizer resin being at least one of a copolymer comprising as its monomer components an oxirane-containing vinyl monomer and an alkoxysilane-containing vinyl monomer and a vinyl copolymer comprising as its monomer components a polysiloxane macromonomer and an oxirane-containing vinyl monomer,(b) a chelate compound admixed with a nonaqueous dispersion.

摘要翻译： 本发明公开了一种可在低温下固化的组合物，其特征在于该组合物包括：（a）不溶于有机液体的颗粒状聚合物的非水分散体，其通过在有机液体存在下使可自由基聚合的不饱和单体聚合而制备 分散稳定剂树脂，所述稳定剂树脂是包含作为其单体组分的含环氧乙烷的乙烯基单体和含烷氧基硅烷的乙烯基单体和乙烯基共聚物中的至少一种，其包含作为其单体组分的聚硅氧烷大分子单体和含环氧乙烷的乙烯基共聚物 乙烯基单体，（b）与非水分散体混合的螯合化合物。

公开(公告)号：US4912184A

公开(公告)日：1990-03-27

申请号：US152002

申请日：1988-02-03

申请人： Yutaka Akasaki ,  Naoya Yabuuchi ,  Tatsuro Ohki

发明人： Yutaka Akasaki ,  Naoya Yabuuchi ,  Tatsuro Ohki

IPC分类号： C08F2/08

CPC分类号： C08F2/08 ,  Y10S526/909

摘要： A process for producing monodisperse vinyl polymer fine particles is disclosed, which comprises polymerizing at least one monomer selected from the group consisting of vinyl aromatic compounds, acrylic esters, and methacrylic esters as dissolved in an organic solvent or a mixed solvent of water and an organic solvent, which is capable of dissolving said monomer or monomers but incapable of dissolving a produced polymer, wherein said polymerizing is carried out in the presence of partially saponified polyvinyl alcohol having a degree of saponification of from 5 to 75 mol % and a number average degree of polymerization of from 100 to 3,000 as a dispersion stabilizer and in the presence of a polymerization initiator. Monodisperse polymer particles having a particle size of the order of micron with a narrow size distribution can be obtained through the one-step polymerization.

摘要翻译： 公开了一种生产单分散乙烯基聚合物微粒的方法，其包括将至少一种选自乙烯基芳族化合物，丙烯酸酯和甲基丙烯酸酯的单体溶解在有机溶剂或水和有机溶剂的混合溶剂中 溶剂，其能够溶解所述单体或单体，但不能溶解所生产的聚合物，其中所述聚合在皂化度为5至75mol％和数均分子量的部分皂化的聚乙烯醇存在下进行 的聚合作为分散稳定剂为100〜3000，在聚合引发剂的存在下进行。 通过一步聚合，可以获得具有窄尺寸分布的微米量级的单分散聚合物颗粒。