利索-全球专利检索

  1. Login
  2. Sign Up

Search Results

97 records (took 0.015 seconds)

    Water-soluble etherified starches
    33.
    发明授权
    Water-soluble etherified starches 失效
    水溶性醚化淀粉

    公开(公告)号：US6001995A

    公开(公告)日：1999-12-14

    申请号：US952771

    申请日：1997-11-21

    Applicant: Andreas Schrell ,  Bernd Huber

    Inventor： Andreas Schrell ,  Bernd Huber

    IPC: C08B31/12 ,  C08L1/24 ,  C08L3/08 ,  D01F2/00 ,  D01F2/02 ,  D01F2/04 ,  D01F2/06 ,  D01F2/10 ,  D06P3/66 ,  C08B31/08

    CPC classification number: D01F2/10 ,  C08B31/125 ,  C08L1/24 ,  D01F2/00 ,  D01F2/04 ,  D01F2/06 ,  C08L3/08

    Abstract: Aminated cellulose fiber obtained by adding one or more starches etherified with C.sub.2 -C.sub.5 -alkylamines which may additionally be substituted in the alkyl moiety by 1 to 2 further hydroxyl and methoxy groups and whose amino group is a primary or C.sub.1 -C.sub.4 -alkyl-substituted secondary, tertiary or quaternary amino or ammonium group and having a degree of substitution between 0.1 and 3 to a viscose dope, an alkali cellulose or a cellulose solution and spinning fiber therefrom.

    Abstract translation: PCT No.PCT / EP96 / 02084第 371日期：1997年11月21日 102（e）日期1997年11月21日PCT提交1996年5月15日PCT公布。 WO96 / 37642 PCT出版物 日期：1996年11月28日通过加入一种或多种与C2-C5-烷基胺醚化的淀粉得到的胺化纤维素纤维，其可以在烷基部分另外被1至2个羟基和甲氧基取代，并且其氨基是伯或C1- C4烷基取代的仲，叔或季氨基或铵基，并且对粘胶原液，碱纤维素或纤维素溶液的取代度为0.1至3，并由其纺丝。

    Hollow cellulose dialysis fibers
    35.
    发明授权
    Hollow cellulose dialysis fibers 失效
    中空纤维素透析纤维

    公开(公告)号：US5192440A

    公开(公告)日：1993-03-09

    申请号：US798897

    申请日：1991-11-27

    Applicant: Gunter von Sengbusch

    Inventor： Gunter von Sengbusch

    IPC: A61M1/18 ,  B01D65/10 ,  B01D69/08 ,  B01D71/10 ,  D01F2/04

    CPC classification number: B01D65/102 ,  B01D69/08 ,  B01D71/10

    Abstract: A cellulose dialysis membrane in the form of a hollow fiber is formed from cellulose-cuoxam solutions. An internal cavity is formed by a liquid or a gas. The membrane has a UFR of at least 4 ml/m.sup.2 . h . mm Hg. The hydrogel components of the cellulose are distributed in cells with a mean free path length of 3-10 nm in the membrane wall in a log-normal distribution. The mean free path length is the distance between the cells and is determined by the freeze-etching replica method after swelling of the membrane with water. More than 65% of all the hydrogel cell interfaces of the membrane have a form factor between 1.0 and 5.0. In addition, the UFR of the membrane after storage for more than ten days in a humid atmosphere at 20.degree. C. and 100% relative humidity is more than 50% of the value determined immediately after drying or after storage in a dry environment.

    Abstract translation: 中空纤维形式的纤维素透析膜由纤维素 - 立克唑溶液形成。 内腔由液体或气体形成。 膜具有至少4ml / m 2的UFR。 H 。 mm Hg。 纤维素的水凝胶组分以对数正态分布在膜壁中分布在平均自由程长度为3-10nm的细胞中。 平均自由程长度是细胞之间的距离，并且在用水溶胀膜之后通过冷冻蚀刻复制法确定。 超过65％的膜的水凝胶细胞界面的形状因子在1.0和5.0之间。 另外，在20℃，100％相对湿度的潮湿环境中，超过10天的保存后的膜的UFR大于干燥后立即干燥后或在干燥环境下储存后的值的50％以上。

    Method of producing dialyzing membrane
    38.
    发明授权
    Method of producing dialyzing membrane 失效
    透析膜的制造方法

    公开(公告)号：US4164437A

    公开(公告)日：1979-08-14

    申请号：US809486

    申请日：1977-06-23

    Applicant: Werner Henne ,  Gustav Dunweg ,  Werner Schmitz ,  Raimund Pohle ,  Friedrich Lawitzki

    Inventor： Werner Henne ,  Gustav Dunweg ,  Werner Schmitz ,  Raimund Pohle ,  Friedrich Lawitzki

    IPC: A61M1/18 ,  A61M20060101 ,  A61M1/14 ,  A61M1/36 ,  B01D20060101 ,  B01D15/00 ,  B01D71/06 ,  B29D20060101 ,  B32B20060101 ,  B32B5/00 ,  B32B23/14 ,  C08J20060101 ,  C08J5/00 ,  C08J5/18 ,  D01F20060101 ,  D01F1/08 ,  D01F2/04

    CPC classification number: B01D71/10 ,  B01D69/04 ,  B01D69/06 ,  B01D69/08 ,  B01D69/12 ,  B01D69/147

    Abstract: A dialyzing membrane, especially for hemodialysis, formed as a hollow fiber, tubular foil or flat sheet by regeneration of cellulose from a cuprammonium solution, the membrane comprising at least two firmly adhered cellulosic layers including at least one dialyzing layer consisting essentially of a semipermeable regenerated cellulose and at least one adsorbent layer consisting of said regenerated cellulose containing embedded therein fine particles of an adsorbent material in an amount of up to 95% by weight with reference to the dry weight of the adsorbent layer, preferably 1 to 90% and especially 20 to 70% by weight, when the adsorbent layer is part of a hollow fiber structure. The dialyzing membrane of the invention is produced by a method requiring at least two cuprammonium cellulose solutions, one of which is free of adsorbent particles and another of which contains a suspension of adsorbent particles, the different solutions being spun from adjacent spinning slots for immediate layer to layer contact and then introduced over a short air gap into a coagulating or precipitating bath to entrap the adsorbent particles in the spun layer in which the particles were originally suspended. Isopropyl myristate is particularly advantageous as a liquid filler for the axial duct or canal of a hollow membrane.

    Abstract translation: 特别是用于血液透析的透析膜通过从铜铵溶液中再生纤维素而形成为中空纤维，管状箔或扁平片，所述膜包含至少两个牢固粘附的纤维素层，所述至少一个透析层基本上由半透性再生的 纤维素和由所述再生纤维素组成的至少一个吸附剂层，其中包含相对于吸附剂层的干重优选为至多95重量％的吸附剂材料的细颗粒，优选为1至90％，特别是20 至70重量％时，吸附剂层为中空纤维结构体的一部分。 本发明的透析膜通过需要至少两种铜铵纤维素溶液的方法生产，其中一种不含吸附剂颗粒，另一种含有吸附剂颗粒的悬浮液，不同的溶液是从相邻的纺丝槽纺成立即层 层叠接触，然后通过短气隙引入凝结或沉淀浴中，以将吸附剂颗粒捕获在颗粒最初悬浮的纺丝层中。 肉豆蔻酸异丙酯作为中空膜的轴向管道或管道的液体填料是特别有利的。

Patent Agency Ranking