公开(公告)号：US4778601A

公开(公告)日：1988-10-18

申请号：US658600

申请日：1984-10-09

Applicant: George Lopatin ,  Larry Y. Yen

Inventor： George Lopatin ,  Larry Y. Yen

IPC: C08J9/26 ,  B01D67/00 ,  B01D71/26 ,  C08J9/28 ,  B01D13/00

CPC classification number: C08J9/28 ,  B01D67/003 ,  B01D67/0095 ,  B01D71/26 ,  B01D2323/12 ,  B01D2323/18 ,  B01D2325/30 ,  C08J2201/03 ,  C08J2201/052 ,  C08J2201/0543 ,  C08J2201/0546 ,  C08J2323/06

Abstract: Microporous membranes and methods for producing such membranes from ultrahigh molecular weight polyethylene are described. The method employs extrusion of a solution of UHMW-PE and porogen through a forming die followed by thermal phase separation of polymer and porogen. Microporous structures are created by removing porogen. Microporous membranes produced include membranes with good permeability to air and water making them particularly useful as filtration media and water-resistant breathable membranes.

Abstract translation: 描述了微孔膜和从超高分子量聚乙烯生产这种膜的方法。 该方法通过成形模挤出UHMW-PE和致孔剂溶液，然后热分解聚合物和致孔剂。 通过去除致孔剂产生微孔结构。 产生的微孔膜包括对空气和水具有良好渗透性的膜，使得它们特别用作过滤介质和防水透气膜。

公开(公告)号：US4434250A

公开(公告)日：1984-02-28

申请号：US335393

申请日：1981-12-29

Applicant: Erich Kessler

Inventor： Erich Kessler

IPC: B29B7/00 ,  B29C47/00 ,  B29C47/20 ,  B29C47/88 ,  B29C47/92 ,  B29C67/20 ,  B29K105/04 ,  B29L23/00 ,  C08J9/28 ,  B29D27/00 ,  B29F3/04

CPC classification number: B29C47/20 ,  B29C67/205 ,  C08J9/28 ,  B29C47/0023 ,  B29K2105/0073 ,  C08J2201/0543 ,  C08J2201/0546

Abstract: Method and apparatus for the production of porous tubing. One extrudes a homogeneous mixture of at least two components, one component a meltable polymer and the other component a liquid inert in relation to the polymer, both components forming a binary system which in liquid aggregate state displays a range of complete miscibility and a range with a miscibility gap, at a temperature above the separation temperature, substantially vertically upwardly using a circular slot nozzle and blowing of gas or dosing-in of liquid into the interior of the nozzle, into a bath, which displays a temperature below the separation temperature, allows the tubing to solidify, and extracts or lixiviates the tubing. Preferred embodiments include the use of water at a temperature from 15.degree. to 90.degree. C. as bath liquid; use of polypropylene as the polymer and N,N-bis-(2-hydroxyethyl)-hexadecylamine as liquid; blowing nitrogen gas into the interior of the nozzle; lixiviating with alcohol; thermally insulating the circular slot nozzle from the bath; having a non-insulated zone between the circular slot and the thermal insulation; the non-insulated zone of the nozzle having a breadth of about 0.5 to 1 mm; using thermal insulation based upon asbestos cement. The apparatus for the production of the porous tubing by extrusion of such homogeneous mixture contains a circular slot nozzle, having a circular slot and provided with means thermally insulating in relation to the bath liquid, displaying a zone without thermal insulation between said circular slot and said thermally means.

Abstract translation: 用于生产多孔管的方法和设备。 一个挤出至少两个组分的均匀混合物，一个组分是可熔融聚合物，另一个组分是相对于聚合物惰性的液体，两个组分形成二元体系，其以液体聚集状态显示出一系列完全混溶性， 在高于分离温度的温度下，使用圆形狭缝喷嘴基本上垂直向上的混合间隙，将气体吹入或喷入喷嘴内部的液体进入浴中，该浴显示出低于分离温度的温度， 允许管道固化，并提取或浸泡管道。 优选的实施方案包括使用15℃至90℃的水作为浴液; 使用聚丙烯作为聚合物和N，N-双 - （2-羟乙基） - 十六胺作为液体; 将氮气吹入喷嘴的内部; 用酒精浸泡; 将圆形狭槽喷嘴与浴槽隔热; 在圆形槽和绝热之间具有非绝缘区; 所述喷嘴的非绝缘区域具有约0.5至1mm的宽度; 使用基于石棉水泥的保温。 用于通过挤出这种均匀混合物生产多孔管的装置包含一个圆形狭缝喷嘴，该圆形狭缝喷嘴具有一个圆形槽并且设置有相对于浴液热绝缘的装置，在所述圆形槽和所述 热意味着。

公开(公告)号：US3954927A

公开(公告)日：1976-05-04

申请号：US497603

申请日：1974-08-16

Applicant: Irl N. Duling ,  John C. Merges, Jr.

Inventor： Irl N. Duling ,  John C. Merges, Jr.

IPC: C08J9/26 ,  C08J9/28 ,  B29D27/00

CPC classification number: C08J9/26 ,  C08J9/28 ,  C08F110/02 ,  C08J2201/042 ,  C08J2201/0543 ,  C08J2201/0546 ,  C08J2323/06

Abstract: A method is disclosed for preparing a porous structure of ultra high molecular weight polyethylene. A heterogeneous composite of the polyethylene and a particular hydrocarbon is heated to a temperature above the melting point of the hydrocarbon but below the melting point of the polyethylene. The composite is then shaped. After such shaping the temperature is then raised to a temperature above the melting point of the polyethylene and maintained until complete fusion of the polyethylene particles occurs. Thereafter the hydrocarbon is extracted from the cooled shaped structure.

Abstract translation: 公开了一种制备超高分子量聚乙烯多孔结构的方法。 将聚乙烯和特定烃的非均相复合物加热到高于烃的熔点但低于聚乙烯的熔点的温度。 然后将复合材料成型。 在这种成形之后，将温度升高到高于聚乙烯的熔点的温度，并保持直到聚乙烯颗粒完全熔化。 此后，从冷却的结构中提取烃。

公开(公告)号：US3887730A

公开(公告)日：1975-06-03

申请号：US28248172

申请日：1972-08-21

Applicant: PHILIP MORRIS INC

Inventor： RAINER NORMAN B ,  WILSON PETER ALLEN

IPC: A24D3/08 ,  C08J3/02 ,  C08J9/28 ,  B44D1/09 ,  A24D1/00

CPC classification number: C08J3/02 ,  A24D3/08 ,  C08J9/28 ,  C08J2201/0543 ,  C08J2201/0546 ,  C08J2325/04 ,  Y10S428/904

Abstract: Microporous styrene polymers are provided having randomly interconnected open network of irregularly shaped pores whose walls consist of cohered spherical particles of the polymer. These microporous styrene polymers are produced by mixing styrene polymer latex with a water-soluble ether, casting, molding, or impregnating the resulting mixture into a fibrous material, heating same to a temperature of from about 80*C to about 120*C and removing the ether.

Abstract translation: 提供微孔苯乙烯聚合物，其具有随机互连的不规则形状的孔的开放网络，其壁由聚合物的聚焦球形颗粒组成。 这些微孔苯乙烯聚合物通过将苯乙烯聚合物胶乳与水溶性醚混合，将所得混合物浇铸，模塑或浸渍成纤维材料，将其加热至约80℃至约120℃的温度并除去 以太。

公开(公告)号：US3450650A

公开(公告)日：1969-06-17

申请号：US3450650D

申请日：1964-05-28

Applicant: YUASA BATTERY CO LTD

Inventor： MURATA KAZUO

IPC: B29C67/20 ,  C08J9/28 ,  H01M2/14 ,  C08F47/08 ,  C08J1/26

CPC classification number: H01M2/14 ,  B29C67/202 ,  C08J9/28 ,  C08J2201/0502 ,  C08J2201/0543 ,  C08J2201/0546 ,  H01M2300/0005 ,  Y10S264/13