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    Manufacturing process for porous material
    4.
    发明授权
    Manufacturing process for porous material 失效
    多孔材料的制造工艺

    公开(公告)号：US06984733B2

    公开(公告)日：2006-01-10

    申请号：US10451194

    申请日：2001-12-19

    Applicant: Hans Berg ,  Mats Carlsson

    Inventor： Hans Berg ,  Mats Carlsson

    IPC: C08B37/00

    CPC classification number: C08J9/28 ,  C08B37/0039 ,  C08J3/075 ,  C08J2201/0544 ,  C08J2305/12

    Abstract: A method for the manufacture of a solid porous separation material based on a polysaccharide, said method comprising the steps of: (a) providing an aqueous solution (I) of a polysaccharide, (b) solidifying the solution, preferably by transforming the solution to a gel, and (c) optionally crosslinking the polysaccharide, with the proviso that, if step (c) is present, steps (b) and (c) may be carried out simultaneously. The method is characterized in that the polysaccharide provided in step (a) is modified by being inter-molecularly crosslinked to an extent such that the viscosity of the solution (I) is at least 110%, preferably at least 200%, of the viscosity of an aqueous solution (II) of the corresponding polysaccharide which has not been intermolecularly crosslinked and which is present in the same concentration as the inter-molecularly crosslinked polysaccharide is in solution (I)

    Abstract translation: 一种制备基于多糖的固体多孔分离材料的方法，所述方法包括以下步骤：（a）提供多糖的水溶液（I），（b）固化溶液，优选通过将溶液转化为 凝胶，和（c）任选地交联多糖，条件是如果存在步骤（c），则可以同时进行步骤（b）和（c）。 该方法的特征在于，步骤（a）中提供的多糖通过分子间交联而被改性，使得溶液（I）的粘度至少为粘度的110％，优选至少为200％ 未分子交联并且以与分子内交联的多糖相同的浓度存在的相应多糖的水溶液（II）在溶液（I）中，

    Manufacturing process for porous material
    5.
    发明申请
    Manufacturing process for porous material 失效
    多孔材料的制造工艺

    公开(公告)号：US20040039193A1

    公开(公告)日：2004-02-26

    申请号：US10451194

    申请日：2003-06-19

    Inventor： Hans Berg ,  Mats Carlsson

    IPC: C08B037/00

    CPC classification number: C08J9/28 ,  C08B37/0039 ,  C08J3/075 ,  C08J2201/0544 ,  C08J2305/12

    Abstract: A method for the manufacture of a solid porous separation material based on a polysaccharide, said method comprising the steps of: (a) providing an aqueous solution (I) of a polysaccharide, (b) solidifying the solution, preferably by transforming the solution to a gel, and (c) optionally cross-linking the polysaccharide, with the proviso that, if step (c) is present, steps (b) and (c) may be carried out simultancously. The method is characterised in that the polysaccharide provided in step (a) is modified by being inter-molecularly cross-linked to an extent such that the viscosity of solution (I) is at least 110%, preferably at least 200%, of the viscosity of an aqueous solution (II) of the corresponding polysacchaiide which has not been inter-molecularly cross-linked and which is present in the same concentration as the inter-molecularly cross-linked polysaccharide is in solution (I).

    Abstract translation: 一种制备基于多糖的固体多孔分离材料的方法，所述方法包括以下步骤：（a）提供多糖的水溶液（I），（b）固化溶液，优选通过将溶液转化为 凝胶，和（c）任选地交联多糖，条件是如果存在步骤（c），则可以同时进行步骤（b）和（c）。 该方法的特征在于，步骤（a）中提供的多糖通过分子内交联以使溶液（I）的粘度为至少110％，优选至少200％ 在溶液（I）中，未分子内交联并且以与分子内交联的多糖相同浓度存在的相应多糖的水溶液（II）的粘度。

    Microcellular foams
    7.
    发明授权
    Microcellular foams 失效
    微孔泡沫

    公开(公告)号：US5128382A

    公开(公告)日：1992-07-07

    申请号：US794124

    申请日：1991-11-15

    Applicant: Jarrell R. Elliott, Jr. ,  Gokul Srinivasan ,  Manish Dhanuka ,  Ranjan Akhaury

    Inventor： Jarrell R. Elliott, Jr. ,  Gokul Srinivasan ,  Manish Dhanuka ,  Ranjan Akhaury

    IPC: C08J9/28

    CPC classification number: C08J9/28 ,  C08J2201/05 ,  C08J2201/0544

    Abstract: Supercritical drying has distinct advantages in generating microcellular materials. The dimensional stability of the polymer is not affected on drying because the supercritical process does not go through the two phase path and therefore the effect of capillary forces is absent. This helps in maintaining the morphology of the final polymer structure and better control over cell size.Organic microcellular foams were prepared by polymerizing directly in a near-critical fluid and pursuing the supercritical drying in the same reactor. The critical variables are the choice of a diluent with a strong enough solvent power to stabilize the polymer matrix, but with a low enough critical temperature to permit critical point drying without damage to the polymer matrix.

    Abstract translation: 超临界干燥在产生微孔材料方面具有明显的优势。 聚合物的尺寸稳定性不受干燥影响，因为超临界过程不经过两相路径，因此不存在毛细管作用。 这有助于维持最终聚合物结构的形态并更好地控制细胞的大小。 通过在近临界流体中直接聚合并在同一反应器中进行超临界干燥来制备有机微孔泡沫。 关键变量是选择具有足够强的溶剂能力的稀释剂以稳定聚合物基质，但具有足够低的临界温度以允许临界点干燥而不损坏聚合物基质。

    Process for producing microporous powders and membranes
    9.
    发明授权
    Process for producing microporous powders and membranes 失效
    生产微孔粉末和膜的方法

    公开(公告)号：US4968733A

    公开(公告)日：1990-11-06

    申请号：US401854

    申请日：1989-09-01

    Applicant: Heinz-Joachim Muller ,  Friedbert Wechs

    Inventor： Heinz-Joachim Muller ,  Friedbert Wechs

    IPC: B01D61/14 ,  A61M1/16 ,  B01D67/00 ,  B01D71/16 ,  B01D71/30 ,  B01D71/32 ,  B01D71/34 ,  B01D71/38 ,  B01D71/40 ,  B01D71/50 ,  B01D71/64 ,  B01D71/66 ,  B01D71/68 ,  C08J3/14 ,  C08J9/28 ,  D01D5/24 ,  D01F6/76 ,  D01F6/78 ,  D01F6/94

    CPC classification number: B01D67/0018 ,  B01D67/003 ,  B01D71/68 ,  C08J3/14 ,  C08J9/28 ,  B01D2323/12 ,  B01D2325/022 ,  C08J2201/052 ,  C08J2201/0544 ,  Y10S424/07

    Abstract: A process produces microporous powders or shaped articles, in particular membranes in the form of flat films, tubular films or hollow fibers, which may be used for controlled release of an active compound, for dialysis, gas separation, ultrafiltration or microfiltration, from polyvinylidene fluoride and/or polyphenylene sulfide and/or polysulfone and/or polyacrylonitrile and/or ethylene/vinyl alcohol copolymer and/or ethylene/chlorotrifluoroethylene copolymer and/or polyethersulfone and/or polyether-imide and/or polymethyl methacrylate and/or polycarbonate and/or cellulose triacetate. The process utilizes phase separation by means of thermally induced triggering or triggering induced by a non-solvent of a solution of the polymer in a mixture containing .epsilon.-caprolactam as the essential dissolving constituent. The solution may be formed before the phase separation is triggered.

    Abstract translation: 一种方法产生微孔粉末或成型制品，特别是可以用于透明，气体分离，超滤或微滤的用于透析，气体分离，超滤或微过滤的平板，管状膜或中空纤维形式的膜，由聚偏二氟乙烯 和/或聚苯硫醚和/或聚砜和/或聚丙烯腈和/或乙烯/乙烯醇共聚物和/或乙烯/氯三氟乙烯共聚物和/或聚醚砜和/或聚醚酰亚胺和/或聚甲基丙烯酸甲酯和/或聚碳酸酯和/或 三醋酸纤维素。 该方法利用通过由含有ε-己内酰胺作为必需溶解成分的混合物的聚合物溶液的非溶剂引起的热引发触发或引发相分离。 在触发相分离之前可以形成溶液。

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