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公开(公告)号：US06517758B1
公开(公告)日：2003-02-11
申请号：US09494129
申请日：2000-01-28
IPC分类号： B29C4788
CPC分类号： C08J5/18 , C08J2301/02 , D01F2/00 , Y10S264/62
摘要： The invention relates to a process for the production of cellulosic moulded bodies in the form of flat or tubular films and cellulosic membranes in the form of flat or tubular films whereby a solution of cellulose in an aqueous tertiary amine oxide is extruded using an extrusion nozzle whereby the solution can as the case may be also contain additives such as stabilizing and softening agents, pore formers and so on whereby a moulded solution results which has two surfaces and the extruded moulded solution is led over a gap into a precipitation bath and drawn off from the precipitation bath. The process in accordance with the invention is characterized in that the two surfaces of the moulded solution in the gap are each exposed to at least one gaseous medium whereby the medium to which the first surface is exposed differs from the medium to which the second surface is exposed in composition, properties and/or the state of motion.
摘要翻译： 本发明涉及一种以扁平或管状薄膜形式的扁平或管状薄膜和纤维素膜形式的纤维素成型体的生产方法，由此纤维素在叔胺氧化胺水溶液中的溶液使用挤出喷嘴挤出，由此 溶液可以根据情况也可以含有稳定和软化剂，成孔剂等添加剂，由此形成具有两个表面的模制溶液和挤出的模制溶液被引导到沉淀浴中并从 沉淀浴。 根据本发明的方法的特征在于，间隙中的模制溶液的两个表面各自暴露于至少一种气体介质，由此暴露第一表面的介质不同于第二表面是 暴露于组成，性质和/或运动状态。
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2.发明授权
公开(公告)号：US5792412A
公开(公告)日：1998-08-11
申请号：US713377
申请日：1996-09-13
申请人： Yann-Per Lee , Ronald Bernz Holzwarth , Lanying Wu
发明人： Yann-Per Lee , Ronald Bernz Holzwarth , Lanying Wu
CPC分类号： A61F13/512 , B26F1/26 , Y10S264/62 , Y10S264/70 , Y10T428/24273 , Y10T428/24281 , Y10T428/249953 , Y10T428/249978 , Y10T428/268
摘要： This invention relates to a process for forming a single-layer, durably wettable polymeric web having a plurality of apertures. This process comprises melting a mixture of at least one thermoplastic polymer and at least one migratable surfactant and extruding the mixture to form a single-layer, substantially continuous polymeric film. The film is then apertured using high pressure fluid flows. Aperture formation is conducted when the single-layer polymeric film has a contact angle of at least about 30.degree., to minimize wash-off of the surfactant impregnated in the polymer web. The invention also relates to durably-wettable apertured webs.
摘要翻译： 本发明涉及一种用于形成具有多个孔的单层耐久湿润聚合物网的方法。 该方法包括将至少一种热塑性聚合物和至少一种可迁移表面活性剂的混合物熔融并挤出混合物以形成单层基本上连续的聚合物膜。 然后使用高压流体流动膜。 当单层聚合物膜具有至少约30°的接触角时进行孔形成，以最小化浸渍在聚合物网中的表面活性剂的洗脱。 本发明还涉及耐久湿润的有孔网。
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公开(公告)号：US5246582A
公开(公告)日：1993-09-21
申请号：US868965
申请日：1992-04-16
IPC分类号： B01D71/68
CPC分类号： B01D71/68 , Y10S264/48 , Y10S264/62
摘要： A synthetic hydrophilic membrane, and method for manufacturing thereof, in the form of hollow fibers or flat membranes for dialysis and/or ultrafiltration, containing a mixture of polysulfone and sulfonated polysulfone, the mixture containing 65 to 95 wt.% sulfonated polysulfone, possibly as a salt of sulfonic acid, and 35 to 5 wt.% unsulfonated polysulfone. Preferably, up to 12 wt.% water-soluble polymers, based on the total mixture, are added to the mixture of polysulfone and sulfonated polysulfone before formation of the membrane.
摘要翻译： 用于透析和/或超滤的中空纤维或平膜形式的合成亲水膜及其制造方法，其包含聚砜和磺化聚砜的混合物，所述混合物含有65至95重量％的磺化聚砜，可能为 磺酸盐和35〜5重量％的未磺化聚砜。 优选地，在形成膜之前，将高达12重量％的基于总混合物的水溶性聚合物加入聚砜和磺化聚砜的混合物中。
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4.发明授权
公开(公告)号：US5215692A
公开(公告)日：1993-06-01
申请号：US829024
申请日：1992-05-01
CPC分类号： B01D67/0093 , C08J7/12 , C08J7/16 , B01D2323/38 , Y10S264/48 , Y10S264/62
摘要： Halogen-substitutable hydrogen atoms are linked to nitrogen atoms of a polymer, with ethylenically-unsaturated monomers. By using inorganic or organic hypohalogenites and/or organic N-halogen derivatives as halogenation means, hydrogen atoms on the nitrogen atoms of the polymer membranes or polymer formed materials are replaced by halogen atoms and part of these are removed by reducing agents in the presence of ethylenically unsaturated monomers, with radical grafting of these on to the nitrogen atoms, after which the remaining halogen atoms are removed by reducing agents in the absence of monomers.
摘要翻译： PCT No.PCT / EP90 / 01498 Sec。 371日期：1992年5月1日 102（e）日期1992年5月1日PCT提交1990年9月6日PCT公布。 出版物WO91 / 03310 日期1991年3月21日。可氢原子的氢原子与烯属不饱和单体连接在聚合物的氮原子上。 通过使用无机或有机次卤酸盐和/或有机N-卤素衍生物作为卤化手段，聚合物膜的氮原子上的氢原子或聚合物形成的材料被卤素原子替代，并且其中的一部分在还原剂存在下被还原剂除去 烯键式不饱和单体，将它们自由基接枝到氮原子上，然后在不存在单体的情况下通过还原剂除去剩余的卤素原子。
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公开(公告)号：US5143616A
公开(公告)日：1992-09-01
申请号：US2680
申请日：1991-05-15
申请人： David B. Pall , Stephen A. Geibel
发明人： David B. Pall , Stephen A. Geibel
CPC分类号： B01D63/087 , B01D63/061 , B01D63/065 , B01D63/081 , B01D69/10 , Y10S264/48 , Y10S264/62
摘要： A composite structure, particularly a filter structure, is provided comprising a support having a surface and a porous membrane formed integrally to the surface of the support. The support preferably includes means for directing a fluid away from the surface of the support. The support surface is at least slightly soluble in a solvent. The porous membrane comprises a resin soluble in the solvent and precipitated while the casting solution is in contact with a porous substrate and the surface of the support. The membrane is formed and integrally secured to the surface of the support contemporaneously.
摘要翻译： 提供复合结构，特别是过滤器结构，其包括具有与支撑体的表面整体形成的表面和多孔膜的支撑件。 支撑件优选地包括用于将流体引导离开支撑体的表面的装置。 载体表面至少微溶于溶剂。 多孔膜包括可溶于溶剂中的树脂，并且在浇铸溶液与多孔基材和载体的表面接触时沉淀。 膜同时形成并一体地固定在支撑体的表面上。
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公开(公告)号：US5096637A
公开(公告)日：1992-03-17
申请号：US623856
申请日：1990-12-05
CPC分类号： B01D61/145 , A61L2/0017 , A61L2/022 , B01D61/142 , B01D69/02 , B01D69/12 , C07K1/34 , Y10S264/48 , Y10S264/62
摘要： A composite membrane and process utilizing the membrane which is capable of selectively removing particles such as viral particles from a solution such as a protein solution is provided. The membrane comprises a porous membrane substrate, a surface skin having ultrafiltration separation properties and an intermediate porous zone between the substrate and the skin which intermediate zone has an average pore size smaller than that of the substrate. The intermediate zone is free of voids which break the skin and which directly fluid communicate with the substrate. The composite is capable of a log reduction value of at least 3 (99.9% removal) of particles selectively from solution.
摘要翻译： 提供一种复合膜和利用该膜的方法，其能够从诸如蛋白质溶液的溶液中选择性地除去诸如病毒颗粒的颗粒。 膜包括多孔膜基底，具有超滤分离性能的表面皮肤和在基底和皮肤之间的中间多孔区，该中间区的平均孔径小于基底的平均孔径。 中间区域没有空隙，其破坏皮肤并且与基底直接流体连通。 复合材料能够从溶液中选择性地减少至少3（99.9％去除）颗粒的对数减少值。
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公开(公告)号：US4933085A
公开(公告)日：1990-06-12
申请号：US333548
申请日：1989-04-04
CPC分类号： B01D69/08 , B01D71/64 , Y10S264/48 , Y10S264/62
摘要： A method of manufacturing an integral asymmetrical membrane for the separation of liquid or gaseous mixtures. A membrane-forming agent in the form of a polyetherimide is mixed with a solvent that is miscible with water. The resulting mixture is introduced into or accommodated in a geometrical form. The form is then brought into contact with a precipitating agent.
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公开(公告)号：US4859338A
公开(公告)日：1989-08-22
申请号：US229524
申请日：1988-08-08
申请人： Friedrich Behr
发明人： Friedrich Behr
IPC分类号： C01F7/42 , B01D39/20 , B01D71/02 , C22C38/00 , C22C38/28 , C23C26/00 , F01N3/022 , B01D29/00
CPC分类号： B01D67/0046 , B01D39/2027 , B01D67/0048 , B01D71/02 , C23C26/00 , F01N3/022 , B01D2239/0471 , B01D2325/22 , B01D67/0055 , F01N2330/06 , F01N2330/14 , F01N2370/22 , Y02T10/20 , Y10S264/48 , Y10S264/62
摘要： A filter for separating solid particles, whose diameters are generally smaller than 5 .mu.m, from flowing gases or liquids. A covering layer with columnar and/or platelet-shaped oxides is formed on a body consisting of porous steel foil at least in and around the pores.
摘要翻译： 用于从流动的气体或液体中分离其直径通常小于5微米的固体颗粒的过滤器。 至少在孔内和周围，在由多孔钢箔组成的主体上形成具有柱状和/或片状氧化物的覆盖层。
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9.发明授权Highly aromatic anisotropic polyurea/urethane membranes and their use for the separation of aromatics from non-aromatics 失效高芳香族各向异性聚脲/聚氨酯膜及其用于将芳族化合物与非芳族化合物分离的用途
公开(公告)号：US4828773A
公开(公告)日：1989-05-09
申请号：US108821
申请日：1987-10-14
CPC分类号： C10G31/11 , B01D67/0009 , B01D67/0011 , B01D69/08 , B01D69/12 , B01D71/76 , C08G18/10 , B01D2323/08 , B01D2323/12 , B01D71/54 , Y10S264/48 , Y10S264/62
摘要： An anisotropic elastomeric membrane preferably made from polyurea/urethane has been prepared. These anisotropic membranes are made from the corresponding polymeric material by preparing the polymeric material in a good solvent containing less than 5 vol % non-solvent, producing a film of the polymer solution on a support with a maximum pore size less than 20 microns, subjecting the film to conditions such that the solvent vapor pressure-time factor is 1000 mm Hg-min. or less, preferably 200 mm Hg-min or less, most preferably approaching 0 mm Hg-min and quenching the membrane film in a non-solvent yielding a three-layered anisotropic membrane.
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公开(公告)号：US4337320A
公开(公告)日：1982-06-29
申请号：US247397
申请日：1981-03-25
申请人： Misao Morinaga
发明人： Misao Morinaga
CPC分类号： C08J9/0061 , C08G18/6275 , C08L75/04 , C08J2327/06 , C08J2475/00 , Y10S264/03 , Y10S264/42 , Y10S264/62 , Y10S264/77
摘要： An expandable vinyl chloride resin composition for foaming under atmospheric pressure which comprises a resin ingredient comprising (A) a vinyl chloride homopolymer or copolymer having substantially no active hydrogens, (B) a vinyl chloride copolymer having active hydrogens and (C) a thermoplastic polyurethane resin, and a crosslinking agent, a foaming agent, a thermal stabilizer and a plasticizer, the ratio of the components (A), (B) and (C) being 30 to 90:5 to 40:5 to 40 by weight. The composition is expanded under atmospheric pressure to give a foam of a high expansion ratio which has uniform and fine cells and shows an excellent rubber-like elasticity.
摘要翻译： 一种用于在大气压下发泡的可发性氯乙烯树脂组合物，其包含树脂成分，其包含（A）基本上不含活性氢的氯乙烯均聚物或共聚物，（B）具有活性氢的氯乙烯共聚物和（C）热塑性聚氨酯树脂 ，交联剂，发泡剂，热稳定剂和增塑剂，成分（A），（B）和（C）的比例为30〜90:5〜40:5〜40。 将该组合物在大气压下膨胀，得到具有均匀细小的细胞并具有优异的橡胶状弹性的高膨胀率的泡沫。
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