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93 条记录 (耗时 0.024 秒)

    Preparation of asymmetric membranes by the solvent extraction of polymer components from polymer blends
    44.
    发明授权
    Preparation of asymmetric membranes by the solvent extraction of polymer components from polymer blends 失效
    通过聚合物共混物溶剂萃取聚合物组分制备不对称膜

    公开(公告)号：US4868222A

    公开(公告)日：1989-09-19

    申请号：US67321

    申请日：1987-06-29

    申请人： Chieh-Chun Chau ,  Ritchie A. Wessling

    发明人： Chieh-Chun Chau ,  Ritchie A. Wessling

    IPC分类号： B01D67/00 ,  C08J9/00 ,  C08J9/26

    CPC分类号： B01D67/0093 ,  B01D67/003 ,  B01D69/02 ,  C08J9/00 ,  C08J9/26 ,  B01D2323/30 ,  B01D2325/022

    摘要： Asymmetric membranes are prepared by selectively treating a major surface of an incompatible polymer blend prepared by melt blending having at least one extractable polymer component and then contacting the polymer blend with a solvent to extract the extractable polymer component. The treated surface becomes the dense layer of the membrane. The major surface is treated by crosslinking, by contacting the surface with a crosslinking agent which is subsequently cured, or by contacting the surface with an agent which reacts with groups on the surface and imparts a polar character to it.

    摘要翻译： 通过选择性地处理由具有至少一种可提取聚合物组分的熔融共混制备的不相容的聚合物共混物的主表面，然后使聚合物共混物与溶剂接触以提取可萃取的聚合物组分来制备不对称膜。 被处理的表面变成膜的致密层。 主表面通过交联处理，通过使表面与随后固化的交联剂接触，或通过使表面与与表面上的基团反应并赋予其极性特性的试剂接触来处理。

    Addition polymerizable aromatic sulfonium salts and polymers thereof
    46.
    发明授权
    Addition polymerizable aromatic sulfonium salts and polymers thereof 失效
    加成可聚合芳族锍盐及其聚合物

    公开(公告)号：US4528384A

    公开(公告)日：1985-07-09

    申请号：US164744

    申请日：1980-06-30

    申请人： Donald L. Schmidt ,  Thomas C. Klingler ,  Ritchie A. Wessling

    发明人： Donald L. Schmidt ,  Thomas C. Klingler ,  Ritchie A. Wessling

    IPC分类号： C08F2/28 ,  C08F12/32 ,  C07D333/16 ,  B05D1/36

    CPC分类号： C08F2/28 ,  C08F12/32

    摘要： Novel polymers having high activity as cationic surface-active agents are prepared by the addition polymerization of ethylenically unsaturated aromatic sulfonium salts, e.g., ##STR1## When such polymers are heated and/or dried, they are irreversibly converted to inert, nonionic residues without the elimination of odorous by-products.The novel sulfonium salt polymers having relatively low molecular weight and low charge density are particularly useful as surfactants or emulsifiers in the emulsion polymerization of ethylenically unsaturated monomers such as styrene, butadiene, alkyl acrylates and the like. The polymers having high molecular weight and high charge density are useful as thickeners and flocculants.

    摘要翻译： 通过烯键式不饱和芳族锍盐的加成聚合制备具有高活性的阳离子表面活性剂的新型聚合物，例如，当加热和/或干燥这些聚合物时，它们不可逆地转化为惰性的非离子残余物， 消除恶臭副产品。 具有相对低分子量和低电荷密度的新型锍盐聚合物在烯属不饱和单体如苯乙烯，丁二烯，丙烯酸烷基酯等的乳液聚合中特别可用作表面活性剂或乳化剂。 具有高分子量和高电荷密度的聚合物可用作增稠剂和絮凝剂。

    Novel isothiouronium salts
    47.
    发明授权
    Novel isothiouronium salts 失效
    新型异硫脲盐

    公开(公告)号：US4214096A

    公开(公告)日：1980-07-22

    申请号：US48954

    申请日：1979-06-15

    申请人： Thomas C. Klingler ,  Ritchie A. Wessling ,  Dale S. Gibbs

    发明人： Thomas C. Klingler ,  Ritchie A. Wessling ,  Dale S. Gibbs

    IPC分类号： B01F17/00 ,  C07C335/32 ,  C09D5/44 ,  C07C157/02 ,  C07C157/05 ,  C07C161/00

    CPC分类号： C07C335/32 ,  B01F17/0057 ,  C09D5/448

    摘要： Novel isothiouronium salts are herein described which correspond to the formula ##STR1## wherein R and R' are each independently hydrocarbyl or inertly-substituted hydrocarbyl of at least 4 carbon atoms; R.sub.1 -R.sub.4 are each independently alkyl or hydroxyalkyl of 1 to 4 carbon atoms, or R.sub.1 and R.sub.3 are joined to form a 5- or 6-membered heterocyclic ring; n is 0 or 1; and A.sup..crclbar. is an inert neutralizing anion. The isothiouronium salts are surprisingly effective dispersing agents and are used in forming electrodepositable latexes.

    摘要翻译： 本文描述了新的异硫脲鎓盐，其对应于下式：其中R和R'各自独立地为至少4个碳原子的烃基或惰性取代的烃基; R 1 -R 4各自独立地为具有1至4个碳原子的烷基或羟烷基，或者R 1和R 3连接形成5-或6-元杂环; n为0或1; 而A（ - ）是惰性中和阴离子。 异硫脲盐是惊人的有效的分散剂，并用于形成可电沉积胶乳。

    Cationic structured-particle latexes
    48.
    发明授权
    Cationic structured-particle latexes 失效
    阳离子结构化颗粒

    公开(公告)号：US4056501A

    公开(公告)日：1977-11-01

    申请号：US569723

    申请日：1975-04-21

    申请人： Dale S. Gibbs ,  Earl H. Wagener ,  Ritchie A. Wessling

    发明人： Dale S. Gibbs ,  Earl H. Wagener ,  Ritchie A. Wessling

    IPC分类号： C08C1/06 ,  C08F291/00 ,  C08L9/08

    CPC分类号： C08C1/06 ,  C08F291/00

    摘要： Structured-particle latexes are prepared from nonionic or slightly cationic latexes, either preformed or polymerized in situ, by emulsion polymerizing monomeric materials which include an ethylenically unsaturated, activated-halogen monomer such as vinylbenzyl chloride in the absence of a sufficient amount of a surfactant to initiate new particles whereby the activated-halogen monomer is copolymerized on the surface of the existing particles which are dispersed in an aqueous media. The resulting structured-particle latex may then be reacted with a nucleophile such as dimethyl sulfide or trimethyl amine to form a latex having stabilizing "onium" groups such as sulfonium groups or quaternary ammonium groups chemically bound at or near the surface of the polymer particles which are dispersed in aqueous media. The cationic latexes are suitable for coatings and organic pigments.

    Process for electrodeposition of cross-linked polymer coatings
    49.
    发明授权
    Process for electrodeposition of cross-linked polymer coatings 失效
    电沉积交联聚合物涂层的方法

    公开(公告)号：US4017372A

    公开(公告)日：1977-04-12

    申请号：US569722

    申请日：1975-04-21

    申请人： Earl H. Wagener ,  Ritchie A. Wessling ,  Dale S. Gibbs

    发明人： Earl H. Wagener ,  Ritchie A. Wessling ,  Dale S. Gibbs

    IPC分类号： C09D5/44 ,  C25D13/06

    CPC分类号： C09D5/4488

    摘要： A method for electrodeposition of an adherent, water-resistant, cross-linked, organic coating on an electroconductive surface comprising (a) placing the elecroconductive surface to be coated in contact with an aqueous dispersion containing a water-insoluble, essentially electrically non-conductive, film-forming, organic polymer as cation-active, structured particles wherein a substantial portion of the cation-activity is provided by pH independent cationic groups which are chemically bound to the polymer at or near the particle surface and (b) passing an electric current from an electrode through the latex to the electroconductive surface in such a direction that the electroconductive surface is negatively charged, i.e., becomes a cathode in an electrophoretic cell. By use of alternating current both electrodes become coated with an adherent coating of polymer.

    摘要翻译： 一种用于在导电表面上电粘附，防水，交联的有机涂层的方法，包括（a）将待涂覆的导电表面与含有水不溶性，基本上不导电的水分散体接触 成膜，有机聚合物作为阳离子活性的结构化颗粒，其中大部分阳离子活性由pH独立的阳离子基团提供，所述阳离子基团与颗粒表面处或附近的聚合物化学结合，和（b）通过电 电流从电极通过胶乳到导电表面，使得导电表面带负电，即在电泳池中成为阴极。 通过使用交流电，两个电极都涂覆有聚合物的粘附涂层。