Method for removing diluent from a polymer extrudate, and its applications
    3.
    发明授权
    Method for removing diluent from a polymer extrudate, and its applications 有权
    从聚合物挤出物中除去稀释剂的方法及其应用

    公开(公告)号:US08426553B2

    公开(公告)日:2013-04-23

    申请号:US12808095

    申请日:2008-12-12

    Abstract: A method for removing a process solvent (P-sol) from a polymer extrudate, especially in connection with a process for producing a microporous membrane. The method involves contacting the extrudate with chlorinated hydrocarbon (CHC) and hydrofluoroether (HFE) in a first stage; contacting the extrudate from the first stage with HFE in a second stage; combining the first and second waste streams and then separating the P-sol from the combined streams to make an HFE-CHC stream; cooling the HFE-CHC stream to make an HFE-rich phase and a CHC-rich phase; and conducting the CHC-rich phase and/or the HFE-rich phase to step (A).

    Abstract translation: 一种从聚合物挤出物中除去工艺溶剂(P-sol)的方法,特别是与微孔膜的制造方法相关的方法。 该方法包括在第一阶段使挤出物与氯化烃(CHC)和氢氟醚(HFE)接触; 在第二阶段将来自第一阶段的挤出物与HFE接触; 组合第一和第二废物流,然后将P-sol与合并的流分离以制备HFE-CHC流; 冷却HFE-CHC流以形成富含HFE的相和富CHC相; 并且将富CHCl相和/或富HFE相进行到步骤(A)。

    Porous cured epoxy resin
    4.
    发明授权
    Porous cured epoxy resin 有权
    多孔固化环氧树脂

    公开(公告)号:US08186519B2

    公开(公告)日:2012-05-29

    申请号:US11794698

    申请日:2006-01-06

    Abstract: A porous object comprising a three-dimensional network skeleton of a cured epoxy resin and having interconnecting pores, characterized in that the three-dimensional network skeleton forms a non-particle-aggregation type porous object constituted of a three-dimensional branched columnar structure, the proportion of aromatic-ring-derived carbon atoms to all the carbon atoms as a component of the cured epoxy resin is 0.10-0.65, and the porous object has a porosity of 20-80% and an average pore diameter of 0.5-50 μm.

    Abstract translation: 一种多孔物体,其包含固化环氧树脂的三维网状骨架并具有互连孔,其特征在于,所述三维网状骨架形成由三维分支柱状结构体构成的非粒子聚集型多孔体, 作为固化环氧树脂的组分的芳族环衍生的碳原子与所有碳原子的比例为0.10-0.65,多孔物质的孔隙率为20-80%,平均孔径为0.5-50μm。

    MONOLITHIC ORGANIC COPOLYMER
    6.
    发明申请
    MONOLITHIC ORGANIC COPOLYMER 有权
    单晶有机共聚物

    公开(公告)号:US20080097037A1

    公开(公告)日:2008-04-24

    申请号:US11551181

    申请日:2006-10-19

    Abstract: The present invention relates to a monolithic organic copolymer prepared by copolymerization of at least one monomer of the group consisting of styrene, (C1-C3)alkylstyrene, (meth)acrylic acid and esters thereof with a crosslinker in the presence of a macroporogen and a microporogen, wherein a) the sum of said at least one monomer of the group and the crosslinker is 10-20%, preferably 10-15%, by volume of the reaction mixture, with the rest being essentially macroporogen and microporogen, and the degree of said copolymerization is at least 70%, preferably at least 90%, more preferably at least 99%, or b) the sum of said at least one monomer of the group and the crosslinker is 30-50%, preferably 35-45%, by volume of the reaction mixture, with the rest being essentially macroporogen and microporogen, and the degree of said copolymerization is in the range of 25-60%, preferably 35-50%. These copolymers can be used in high-performance liquid chromatography for the separation of biopolymers as well as small molecules.

    Abstract translation: 本发明涉及由至少一种由苯乙烯,(C 1 -C 3 -C 3)烷基苯乙烯,(甲基)丙烯酸烷基酯,(甲基) 丙烯酸及其酯与大分子原子和微原子存在下的交联剂,其中a)基团和交联剂的所述至少一种单体之和为10-20%,优选10-15%(体积) 所述反应混合物其余基本上是大孔原子和微孔,并且所述共聚的程度为至少70%,优选至少90%,更优选至少99%,或b)所述至少一种单体的总和 该基团和交联剂是反应混合物的体积的30-50%,优选35-45%,其余基本上是大孔隙和微孔,并且所述共聚的程度在25-60%的范围内 35-50%。 这些共聚物可用于高效液相色谱分离生物聚合物以及小分子。

    Asymmetric membranes of polytetrafluoroethylene and process for making
them
    10.
    发明授权
    Asymmetric membranes of polytetrafluoroethylene and process for making them 失效
    聚四氟乙烯的不对称膜及其制备方法

    公开(公告)号:US5653882A

    公开(公告)日:1997-08-05

    申请号:US440608

    申请日:1995-05-15

    Abstract: This invention relates to methods for preparing membranes of polyfluoroethylene (PTFE) and to the asymmetric membranes fabricated thereby. Such membranes are useful as separation and ultrafiltration membranes. The membranes are produced as a single layer. Method steps including contacting a substrate with a solution of PTFE in a perfluorinated cycloalkane solvent at a high temperature to cause a film of such solution to be coated on the substrate, removing the coated substrate from the solution and rapidly cooling it by contact with a second solvent, removing the coated substrate from the second solvent, drying the film, and optionally separating film from substrate.

    Abstract translation: 本发明涉及制备聚氟乙烯(PTFE)的膜的方法和由其制造的不对称膜。 这种膜可用作分离和超滤膜。 膜被制成单层。 方法步骤包括在高温下将基材与PTFE溶液在全氟化环烷烃溶剂中接触以使该溶液的膜涂覆在基材上,从溶液中除去涂覆的基材并通过与第二种 溶剂,从第二溶剂中除去涂覆的基材,干燥膜,以及任选地从基材上分离膜。

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