利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

127 条记录 (耗时 0.032 秒)

    Membrane Barrier films and method of use
    4.
    发明申请
    Membrane Barrier films and method of use 审中-公开
    膜阻隔膜及其使用方法

    公开(公告)号：US20080035574A1

    公开(公告)日：2008-02-14

    申请号：US11890228

    申请日：2007-08-03

    申请人： Craig Y. Sabottke ,  Bal K. Kaul ,  Dennis G. Peiffer

    发明人： Craig Y. Sabottke ,  Bal K. Kaul ,  Dennis G. Peiffer

    IPC分类号： B01D61/14 ,  B01D69/10 ,  B01D71/00

    CPC分类号： B01D69/12 ,  B01D61/246 ,  B01D61/362 ,  B01D67/0002 ,  B01D2323/30 ,  C07C7/144 ,  C10G31/11

    摘要： This invention relates to a polymeric membrane assembly which incorporates one or more layers of protective barrier films or protective barrier membrane layers to protect the susceptible polymer membrane from deterioration due to contact with water, oxygen or a combination of both. This invention also relates to a process for utilizing these polymeric membrane assemblies in separation processes involving hydrocarbon feedstreams. More particularly, but not by way of limitation, this invention relates to the use of these polymeric membrane assemblies in processes involving the separation of aromatics from a hydrocarbon based feedstream.

    摘要翻译： 本发明涉及一种聚合物膜组件，其包含一层或多层保护屏障膜或保护屏障膜层，以保护敏感聚合物膜免受由于与水，氧气或两者的组合的接触而劣化。 本发明还涉及在涉及烃进料流的分离过程中利用这些聚合物膜组件的方法。 更具体地但不是限制性的，本发明涉及这些聚合物膜组件在涉及从基于烃的原料流中分离芳族化合物的方法中的用途。

    Method for inhibiting hydrate formation
    6.
    发明授权
    Method for inhibiting hydrate formation 失效
    抑制水合物形成的方法

    公开(公告)号：US06194622B1

    公开(公告)日：2001-02-27

    申请号：US09266387

    申请日：1999-03-11

    申请人： Dennis G. Peiffer ,  Christine A. Costello ,  Lawrence D. Talley ,  Pamela J. Wright

    发明人： Dennis G. Peiffer ,  Christine A. Costello ,  Lawrence D. Talley ,  Pamela J. Wright

    IPC分类号： C07C720

    CPC分类号： C07C7/20 ,  C09K8/52 ,  C09K2208/22 ,  Y10S585/95

    摘要： A method for inhibiting the formation of gas hydrates in a petroleum fluid having hydrate-forming constituents is claimed. More specifically, the method can be used to treat a petroleum fluid, such as natural gas conveyed in a pipe, to inhibit the formation of a hydrate flow restriction in the pipe. The hydrate inhibitors used for practicing the method comprise substantially water soluble homopolymers and copolymers of surfactant monomers, wherein the surfactant monomer unit may be represented by the formula: where R1 and R2 independently are hydrogen or a methyl group, M is a metal cation, n is a number sufficient to produce a number average molecular weight between 1000 and 6,000,000, and o is a number from 1 to 5.

    摘要翻译： 要求保护在具有水合物形成成分的石油液体中抑制气体水合物形成的方法。 更具体地，该方法可用于处理石油流体，例如在管道中输送的天然气，以抑制管道中的水合物流动限制的形成。 用于实施该方法的水合物抑制剂包含基本上水溶性表面活性剂单体的均聚物和共聚物，其中表面活性剂单体单元可以由下式表示：其中R1和R2独立地是氢或甲基，M是金属阳离子，n 是足以产生1000至600,000之间的数均分子量的数，o是1至5的数。

    Polymerizable cationic visco-elastic monomer fluids
    7.
    发明授权
    Polymerizable cationic visco-elastic monomer fluids 失效
    可聚合的阳离子粘弹性单体流体

    公开(公告)号：US5093448A

    公开(公告)日：1992-03-03

    申请号：US537839

    申请日：1990-06-13

    申请人： Dennis G. Peiffer

    发明人： Dennis G. Peiffer

    IPC分类号： C07C65/03 ,  C07C211/63 ,  C08F26/02 ,  C09K3/00 ,  C09K8/12 ,  C09K8/88

    CPC分类号： C09K8/882 ,  C07C211/63 ,  C07C65/03 ,  C08F26/02 ,  C09K3/00 ,  C09K8/12

    摘要： The synthesis of a novel family of cationic monomers capable of forming viscoelastic fluids are described within. These monomers are formed primarily through the reaction of allyl halides and dimethyl alkylamines. The rheological properties of the fluids can be dramatically modified with changes in alkyl length and/or counterion structure. In addition, it is noted that these viscoelastic fluids have properties quite similar to conventional polymer solutions even though the former structures are held together through physical forces and not through chemical bonding as in the latter materials. In addition, the properties of this unique family of cationic monomers are capable of forming viscoelastic fluids in high brine solutions. Even though the counterion attached to the monomer contributes greatly to the rheological properties, addition of soluble acid, bases and salts do not destroy (through ion exchange mechanisms) the viscoelastic properties of these fluids.

    摘要翻译： 介绍了能形成粘弹性流体的新型阳离子单体家族的合成。 这些单体主要通过烯丙基卤化物和二甲基烷基胺的反应形成。 可以用烷基长度和/或抗衡离子结构的变化来显着地改变流体的流变性质。 另外，应注意的是，这些粘弹性流体具有与常规聚合物溶液非常相似的性质，即使前者的结构通过物理力而不是通过化学粘合而保持在一起，如同在后一种材料中那样。 此外，这种独特的阳离子单体族的性质能够在高盐水溶液中形成粘弹性流体。 尽管附着于单体的抗衡离子对流变特性有很大的贡献，但是添加可溶性酸，碱和盐不会破坏（通过离子交换机理）这些流体的粘弹性。

    Interfacial viscosification of aqueous solutions utilizing interpolymer complex
    8.
    发明授权
    Interfacial viscosification of aqueous solutions utilizing interpolymer complex 失效
    使用互聚物复合物的水溶液的界面粘度

    公开(公告)号：US4942189A

    公开(公告)日：1990-07-17

    申请号：US387184

    申请日：1989-07-31

    申请人： Dennis G. Peiffer ,  Robert D. Lundberg ,  Ilan Duvdevani

    发明人： Dennis G. Peiffer ,  Robert D. Lundberg ,  Ilan Duvdevani

    IPC分类号： C08J3/00 ,  C08J3/07 ,  C08J3/09

    CPC分类号： C08J3/07 ,  C08J3/005 ,  C08J3/091 ,  Y10S524/924

    摘要： The present invention relates to a process for the viscosification of an aqueous liquid which includes the steps of forming a solvent system of an organic liquid or oil and a polar cosolvent, the polar cosolvent being less than about 15 weight percent of the solvent system, a viscosity of the solvent system being less than about 1,000 cps; forming an interpolymer complex of neutralized sulfonated polymer (water insoluble) and copolymer of styrene/vinylpyridine in the solvent system to form a solution, a concentration of the water insoluble interpolymer complex polymer in the solution being about 0.01 to about 0.5 weight percent, a viscosity of the solution being less than about 200 cps; the admixing or contacting said solution with about 5 to about 500 volume percent water, the water being immiscible with the organic liquid and the polar cosolvent and interpolymer complex transferring from the organic liquid to the water phase, thereby causing the water phase to gel (i.e., thicken). The large increase in viscosity of the aqueous phase is directly attributed to the formation of a large number of minute water-filled particles dispersed in the continuous aqueous phase.

    摘要翻译： 本发明涉及一种水性液体的增稠方法，其包括形成有机液体或油和极性助溶剂的溶剂体系的步骤，极性助溶剂小于溶剂体系的约15重量％， 溶剂体系的粘度小于约1,000cps; 在溶剂体系中形成中和磺化聚合物（水不溶性）和苯乙烯/乙烯基吡啶的共聚物的互聚物络合物以形成溶液，溶液中水不溶性互聚物络合物聚合物的浓度为约0.01至约0.5重量％，粘度 的溶液小于约200cps; 将所述溶液与约5至约500体积％的水混合或接触，所述水与有机液体和极性共溶剂和互聚物复合物不混溶，从有机液体转移到水相，从而使水相凝胶化（即 ， 加粗）。 水相的粘度大幅度上升直接归因于形成分散在连续水相中的大量微小水分散的颗粒。

    N-sulfoalkyl polyamide water soluble hydrophobically-associating rigid rod polymer
    10.
    发明授权
    N-sulfoalkyl polyamide water soluble hydrophobically-associating rigid rod polymer 失效
    N-磺烷基聚酰胺水溶性疏水缔合刚性棒聚合物

    公开(公告)号：US4894422A

    公开(公告)日：1990-01-16

    申请号：US286098

    申请日：1988-12-19

    申请人： Dennis G. Peiffer ,  Jeff J. Kaladas

    发明人： Dennis G. Peiffer ,  Jeff J. Kaladas

    IPC分类号： C08G69/26 ,  C08G69/48

    CPC分类号： C08G69/265 ,  C08G69/48

    摘要： A water soluble or brine soluble rod-like polymer characterized by the formula: ##STR1## wherein n and n' are a 2 to 22 straight chained or branched chained alkyl or cycloalkyl group, and the level of sulfonation is about 20 to about 100 mole %, and M is a tertiary amine or a metal cation selected from the group consisting of alumina, iron, lead, Groups IA, IIA, IB ad IIB of the Periodic Table of Elements and level of alkylation is about 1.0 to 60 mole %.

    摘要翻译： 特征为下式的水溶性或盐水可溶性棒状聚合物，其中n和n'是2至22个直链或支链链烷基或环烷基，磺化度约为 20至约100摩尔％，M为叔胺或金属阳离子，其选自氧化铝，铁，铅，元素周期表IA，IIA，IB和IIB族，烷基化水平约为1.0 至60摩尔％。