公开(公告)号：US4813983A

公开(公告)日：1989-03-21

申请号：US170691

申请日：1988-03-14

申请人： Takashi Nohmi ,  Toshibumi Fukai

发明人： Takashi Nohmi ,  Toshibumi Fukai

IPC分类号： B01D53/22 ,  B01D69/12 ,  B01D71/28 ,  B01D71/68

CPC分类号： B01D69/12 ,  B01D69/125 ,  B01D71/28 ,  Y10T428/2938 ,  Y10T428/2967

摘要： There is disclosed a composite membrane comprising [A] a polysulfone type porous membrane capable of rejecting 90% or more of dextran molecules having a weight average molecular weight of 70,000 and [B] a specific styrene type resin coated on at least one side of the polysulfone type porous membrane in a thickness of 5 .mu.m or less and in an amount of 1.times.10.sup.-7 g/cm.sup.2 of the polysulfone type porous membrane, the styrene type resin being selected from the group consisting of (I) a specific styrene type linear polymer having a weight average molecular weight of 1.times.10.sup.-5 or more, (II) a specific blend polymer prepared by blending at least two different styrene type linear polymers each as defined above and (III) a specific crosslinked polymer selected from the group consisting of (i) a crosslinked polymer prepared by crosslinking a styrene type linear polymer having a weight average molecular weight of 1.times.10.sup.-3 or more and (ii) a crosslinked polymer prepared by blending at least two different styrene type linear polymers each having a weight average molecular weight of 1.times.10.sup.3. Such a composite membrane has been found to be advantageously employed for gas separation because of its high gas permeability and high selective gas permeability.

摘要翻译： 公开了一种复合膜，其包含[A]能够排除重均分子量为70,000的90％以上的葡聚糖分子的聚砜型多孔膜，[B]在所述聚砜多孔膜的至少一面上涂布特定苯乙烯类树脂 聚砜型多孔膜，其厚度为5μm以下，聚砜型多孔膜为1×10 -7 g / cm 2，苯乙烯类树脂选自（I）特定苯乙烯型线性 聚合物的重均分子量为1×10 -5以上，（II）通过将至少两种各自如上定义的不同苯乙烯型线型聚合物和（III）共混的特定共混聚合物，选自以下的特定交联聚合物： （i）通过交联重均分子量为1×10 -3或更高的苯乙烯型线性聚合物制备的交联聚合物和（ii）通过将至少两种不同的固体 每种重均分子量为1×10 3的线型聚合物。 已发现这种复合膜由于其高透气性和高选择性气体渗透性而有利地用于气体分离。

公开(公告)号：US4399035A

公开(公告)日：1983-08-16

申请号：US276366

申请日：1981-06-15

申请人： Takashi Nohmi ,  Takao Yamada

发明人： Takashi Nohmi ,  Takao Yamada

IPC分类号： C08J9/28 ,  B01D69/12 ,  B01D71/34 ,  B01D71/80 ,  C08J5/18 ,  D01D5/24 ,  F23C99/00 ,  B01D31/00

CPC分类号： B01D71/34 ,  B01D61/145 ,  B01D61/147 ,  B01D61/18 ,  B01D69/082 ,  D01D5/24

摘要： A screen type hollow filament microfilter made of a polyvinylidene fluoride type resin and having a layer structure of two kinds of layers with the support layer and the internal and external skin layers having an easily-controllable and wide average effective pore diameter of 0.05 to 1.0 .mu.m, characterized by having a high selectivity in permeation, a high permeability, a high porosity, an excellent mechanical strength and an excellent chemical resistance and an excellent inertness to living bodies. The microfilter, which has a number of excellent performances, can be produced by extruding a spinning solution comprising a polyvinylidene fluoride type resin, a solvent therefor and at least one kind of surfactant from an annular hollow filament spinning orifice and coagulating the extrudate by using coagulating liquids.

摘要翻译： PCT No.PCT / JP80 / 00102 Sec。 371日期：1981年6月15日 102（e）日期1981年6月15日PCT提交1980年5月13日PCT公布。 公开号WO81 / 00969 日期：1981年04月16日。一种由聚偏二氟乙烯类树脂制成的屏幕型中空丝微滤片，其具有两层的层状结构，其中支撑层和内外皮层具有容易控制和广泛的平均有效 孔径为0.05〜1.0μm，其特征在于具有高的渗透选择性，高渗透性，高孔隙率，优异的机械强度和优异的耐化学性和对生物体的极好的惰性。 具有许多优异性能的微过滤器可以通过将环状中空丝纺丝孔挤出包含聚偏二氟乙烯类树脂及其溶剂的纺丝溶液和至少一种表面活性剂，并通过使用凝结物 液体。

公开(公告)号：US4481260A

公开(公告)日：1984-11-06

申请号：US461992

申请日：1983-01-28

申请人： Takashi Nohmi

发明人： Takashi Nohmi

IPC分类号： B01D71/68 ,  D01D5/24 ,  D01F6/76 ,  D02G3/00

CPC分类号： D01F6/76 ,  B01D63/02 ,  B01D63/021 ,  B01D69/082 ,  B01D71/68 ,  D01D5/24 ,  Y10T428/2975

摘要： An aromatic polysulfone type resin hollow fiber membrane having a thickness of less than 100 .mu.m and a three-layer structure of inner and outer surface skin layers and a void layer disposed therebetween and connected thereto. The hollow fiber membrane of the kind has an improved burst strength, while exhibiting an extremely excellent water permeability. Such a hollow fiber membrane can be produced by a process which comprises extruding a spinning solution of an aromatic polysulfone type resin in an organic polar solvent for said resin, said solution containing a glycol and having a resin concentration of from 10 to 35% by weight, from an annular spinning nozzle of which the orifice width is 10 to 110 .mu.m while simultaneously injecting an internal coagulating liquid into the annular spinning nozzle at an inside bore thereof, thereby to obtain an extrudate in the form of a hollow fiber, and introducing said extrudate into an external coagulating liquid.

摘要翻译： 具有厚度小于100μm的芳香族聚砜型树脂中空纤维膜和内表皮层和外表皮层的三层结构以及与其连接的空隙层。 这种中空纤维膜具有改善的破裂强度，同时表现出非常优异的透水性。 这样的中空纤维膜可以通过以下方法制造：包括在所述树脂的有机极性溶剂中挤出芳香族聚砜型树脂的纺丝溶液，所述溶液含有乙二醇，树脂浓度为10〜35重量％ 从孔宽度为10〜110μm的环状纺丝喷嘴，同时在内孔中将内部凝结液喷入环状纺丝喷嘴，得到中空纤维状的挤出物，引入 所述挤出物成为外部凝结液。

公开(公告)号：US4822489A

公开(公告)日：1989-04-18

申请号：US491340

申请日：1983-04-20

申请人： Takashi Nohmi ,  Yasuo Hashino

发明人： Takashi Nohmi ,  Yasuo Hashino

IPC分类号： B01D71/68 ,  C08L81/06 ,  D01D5/24 ,  D01F6/02 ,  D01F6/28 ,  B01D13/00

CPC分类号： D01D5/24 ,  B01D67/0016 ,  B01D69/02 ,  B01D69/082 ,  B01D71/68

摘要： An aromatic polysulfone type resin hollow fiber membrane having a thickness of 100 to 600 .mu.m and a five-layer structure of an outer surface layer, an outer void layer, an intermediate layer, an inner void layer and an inner surface layer and wherein the inner and outer void layers are present in a thickness ratio of the inner void layer to the outer void layer of 1.5 to 0.6, the intermediate layer has a thickness of 5 to 70 .mu.m, and each of the outer and inner surface layers has an extremely small thickness. The hollow fiber membrane of the kind is excellent in heat resistance, acid resistance, alkali resistance, chemicals resistance and has an improved mechanical strength as well as a high water permeability. The hollow fiber membrane with such excellent properties can be obtained by a process which comprises extruding into an air space a spinning solution of an aromatic polysulfone type resin in an organic polar solvent for said resin, said solution containing a glycol and having a resin concentration of from 15 to 35% by weight, from an annular spinning nozzle to obtain an extrudate in the form of a hollow fiber, allowing the thus obtained extrudate to run in the air space while simultaneously injecting an internal coagulating liquid into the annular spinning nozzle at an inside bore thereof, and subsequently introducing said extrudate into a coagulating liquid bath.

摘要翻译： PCT No.PCT / JP82 / 00329 Sec。 371日期：1983年4月20日 102（e）日期1983年4月20日PCT提交1982年8月23日PCT公布。 出版物WO83 / 00705 日本1983年3月3日。具有厚度为100〜600μm的芳香族聚砜型树脂中空纤维膜和外表层的5层结构，外部空隙层，中间层，内部空隙层和 内表面层，其中所述内部空隙层和所述外部空隙层的厚度与所述外部空隙层的厚度比为1.5〜0.6，所述中间层的厚度为5〜70μm， 外表面层和内表面层具有非常小的厚度。 这种中空纤维膜的耐热性，耐酸性，耐碱性，耐化学性优异，机械强度提高，透水性高。 具有这样优异性能的中空纤维膜可以通过以下方法获得：包括将空气中的芳族聚砜型树脂的纺丝溶液在所述树脂的有机极性溶剂中挤出，所述溶液含有二醇并且树脂浓度为 15至35重量％，从环形纺丝喷嘴获得中空纤维形式的挤出物，使得所得挤出物在空气空间中运行，同时将内部凝结液注入环形纺丝喷嘴中 其内孔，然后将所述挤出物引入凝固液浴中。

公开(公告)号：US4229297A

公开(公告)日：1980-10-21

申请号：US2028

申请日：1979-01-09

申请人： Takashi Nohmi ,  Takao Yamada ,  Yoshinao Doi

发明人： Takashi Nohmi ,  Takao Yamada ,  Yoshinao Doi

IPC分类号： B01D37/00 ,  B01D61/14 ,  B01D67/00 ,  B01D69/02 ,  B01D71/26 ,  C10G31/11 ,  C10G33/06 ,  C10M175/00 ,  C11B3/16

CPC分类号： C10G31/11 ,  B01D17/085 ,  B01D67/0027 ,  B01D67/003 ,  B01D69/02 ,  Y10S210/05

摘要： A specific porous membrane is found to be extremely useful for permeation-separation of an oil from an oil-containing emulsion. By contacting a stable oil-containing emulsion of either water-in-oil type or oil-in-water type with the surface of a specific porous membrane having at its surface a critical surface tension of less than 35 dynes/cm to not less than 20 dynes/cm and having an average pore diameter of 0.03 .mu.m to 5 .mu.m, a pore radius distribution of not more than 1.5 and a porosity of 1 to 85%, only the oil can be permeation-separated, without permeation of the liquid immiscible with the oil, with high selectivity and high oil permeation.

摘要翻译： 发现特定的多孔膜对于从含油乳液中渗透分离油非常有用。 通过将油包水型或水包油型稳定的含油乳液与其表面上具有小于35达因/厘米的临界表面张力的特定多孔膜表面接触，使其不小于 20达因/厘米，平均孔径为0.03微米至5μm，孔半径分布不大于1.5，孔隙率为1至85％，只有油渗透分离，不渗透 液体与油不混溶，具有高选择性和高油渗透性。