公开(公告)号：US4869857A

公开(公告)日：1989-09-26

申请号：US55049

申请日：1987-05-28

Applicant: Hajime Itoh ,  Hiroshi Takahashi ,  Kouji Ohbori ,  Hideaki Habara

Inventor： Hajime Itoh ,  Hiroshi Takahashi ,  Kouji Ohbori ,  Hideaki Habara

IPC: B01D67/00 ,  B01D69/06 ,  C08J9/28

CPC classification number: C08J9/28 ,  B01D67/0013 ,  B01D67/0016 ,  B01D69/02 ,  B01D69/06 ,  B01D2323/12 ,  B01D2325/022 ,  C08J2201/0502 ,  C08J2201/0544 ,  Y10S264/13

Abstract: Porous membranes are produced by dissolving a film-forming polymer in a good solvent for the polymer, forming a film of the resulting polymer solution, and forcibly contacting saturated steam or mist-containing steam with at least one surface of said film. Such porous membranes have pores having a narrow pore diameter distribution and extending in a direction substantially perpendicular to the membrane surface at a high surface pore density on at least one surface thereof.

公开(公告)号：US4272467A

公开(公告)日：1981-06-09

申请号：US866443

申请日：1978-01-03

Applicant: Burnett H. Johnson

Inventor： Burnett H. Johnson

IPC: B29C67/20 ,  C08J9/28 ,  B29D27/00

CPC classification number: C08J9/28 ,  B29C67/202 ,  C08J2201/0544

Abstract: Highly useful novel microcellular polymeric structures, especially films and fibers, are prepared from certain solid polymers. Aromatic polysulfones, polyimides, polyhydantoins, polyamides and polyparabanic acid are the preferred ones for the novel structures of the invention.

Abstract translation: 高效的新型微孔聚合物结构，特别是膜和纤维，由某些固体聚合物制备。 芳族聚砜，聚酰亚胺，聚乙内酰脲，聚酰胺和聚对苯二甲酸是本发明新型结构的优选的。

公开(公告)号：US4157424A

公开(公告)日：1979-06-05

申请号：US201295

申请日：1971-11-23

Applicant: David L. Boutle

Inventor： David L. Boutle

IPC: C08J9/26 ,  D06N3/00 ,  D06N3/06 ,  D06N3/14 ,  B29D27/04

CPC classification number: D06N3/0088 ,  C08J9/26 ,  D06N3/0052 ,  D06N3/0095 ,  D06N3/06 ,  D06N3/14 ,  C08J2201/0544 ,  Y10S264/13

Abstract: An improved microporous polymer material is made by coagulating, e.g. in water, a polymer solution containing dispersed microscopic particles of a removable filler soluble in a coagulating liquid.

Abstract translation: 改进的微孔聚合物材料通过凝结，例如， 在水中，含有溶解在凝结液中的可除去的填充物的分散微观粒子的聚合物溶液。

公开(公告)号：US4153760A

公开(公告)日：1979-05-08

申请号：US514628

申请日：1974-10-15

Applicant: Erik G. Sundberg ,  George A. Campbell ,  Edward I. Doucette

Inventor： Erik G. Sundberg ,  George A. Campbell ,  Edward I. Doucette

IPC: B29C67/20 ,  C08J9/28 ,  H01M2/14 ,  H01M2/16 ,  B29H7/20 ,  C04B33/32

CPC classification number: C08J9/28 ,  B29C67/202 ,  H01M2/14 ,  H01M2/1653 ,  C08J2201/0544 ,  Y10S264/17

Abstract: A process for producing a microporous plastic member useful as a battery separator which comprises(a) forming a coherent dough by mixing a vinyl chloride resin with a plasticizing amount of a first solvent and with finely divided particles of a filler which contains volatilizable constituent releasable therefrom by heating and which shrinks substantially and irreversibly upon release of said volatilizable constituent therefrom, an example of which is hydrated silica;(b) forming the solvent-containing dough into a shaped member;(c) extracting the first solvent from the member before any substantial evaporation of solvent occurs by contacting it with a second solvent in a liquid bath at a temperature substantially below the boiling point of any liquid present, the second solvent being one which is capable of dissolving the first solvent without dissolving the resin and the filler, thereby deplasticizing the member by extractively removing the first solvent from the member; and(d) thereafter heating the member at an elevated temperature but below the softening point of the resin until the filler is shrunk within the member by release of its volatilizable content.

Abstract translation: 一种制造用作电池隔板的微孔塑料构件的方法，其包括（A）通过混合具有第一溶剂的增塑剂的乙烯基氯树脂和与其可释放的易挥发性成分的填充物的精细分散的颗粒形成相互缔合的方法 通过加热，可以大幅度地收缩并释放其中的挥发性成分，这是水合二氧化硅的一个例子; （B）将包含溶剂的成分形成成型成员; （C）在通过任何液体现象的沸点以下大量温度下在液体温度下与第二溶剂接触溶解剂的任何物质之前，从成员中提取第一溶剂，第二溶剂为可溶于 解决第一种溶剂，而不会破坏树脂和填料，通过从会员中抽出第一溶剂，彻底清除会员; 和（D）在高温下加热会员，然后在树脂的强度点之下加热会员，填充物通过释放其易挥发性内容而在会员中掉落。

公开(公告)号：US3931067A

公开(公告)日：1976-01-06

申请号：US498154

申请日：1974-08-16

Applicant: Bruce S. Goldberg ,  Dennis E. Johnson

Inventor： Bruce S. Goldberg ,  Dennis E. Johnson

IPC: B01D67/00 ,  C08J9/28 ,  C08J9/36 ,  C08J9/40 ,  C08K3/24 ,  C08K3/34 ,  C08K3/36 ,  C08K5/02

CPC classification number: B01D67/0093 ,  C08J9/28 ,  C08J9/36 ,  C08J9/40 ,  C08J2201/0544 ,  Y10S521/905

Abstract: A normally hydrophilic microporous material having a polymeric matrix and a filler dispersed throughout the matrix wherein the filler contains active polar groups, is rendered hydrophobic by exposing the material to a reactive compound. In one preferred embodiment of the invention the reactive compound is a silane or a silazane whereas in another preferred embodiment the reactive compound is a Werner-type complex of fatty acids coordinated with a metal. The treated microporous material is rendered impervious to water-based liquids but remains pervious with respect to vapors or gases.

公开(公告)号：US3920875A

公开(公告)日：1975-11-18

申请号：US25755572

申请日：1972-05-30

Applicant: SUZUKI TOSHO ,  AWANO KOICHI ,  KATSUHISA OGINO

Inventor： SUZUKI TOSHO ,  AWANO KOICHI ,  KATSUHISA OGINO

IPC: B41M5/00 ,  B41M5/52 ,  C08J3/09 ,  C08J7/02 ,  C08J7/04 ,  C08J9/28 ,  B41M5/14 ,  D21H5/00

CPC classification number: C08J9/28 ,  B41M5/508 ,  B41M5/52 ,  B41M5/5218 ,  B41M5/5227 ,  C08J3/096 ,  C08J7/02 ,  C08J7/047 ,  C08J2201/0544

Abstract: This invention relates to coated paper-like plastic films having a microporous surface layer and a method of producing the same. Such a coated plastic film is produced by coating plastic polymeric films with a coating composition comprising a resin, a plasticizer, an inorganic fine powder and dimethylformamide and then the coated plastic film is treated with water and subjected to drying. Also, in accordance with this invention, the coated plastic film is subjected to a heat-treatment before or after the coated plastic film is treated with water or after the coated plastic polymeric film is dried.

公开(公告)号：US3753932A

公开(公告)日：1973-08-21

申请号：US3753932D

申请日：1970-12-23

Applicant: DU PONT

Inventor： JENKINS FRANCIS EDWARD

IPC: C08J9/26 ,  C08F47/10 ,  C08J1/26

CPC classification number: B32B5/32 ,  B32B5/20 ,  B32B27/065 ,  B32B27/08 ,  B32B2266/06 ,  C08J9/26 ,  C08J2201/0502 ,  C08J2201/0544

Abstract: A PROCESS FOR PREPARING MICROPOROUS OPEN-CELLED CELLULAR POLYMERIC STRUCTURES WHICH COMPRISES (A) DISSOLVING THE STARTING POLYMER IN A CHLOROFULOROCARBON SOLVENT, (B) COOLING THE RESULTING SOLUTION TO AT LEAST THE SOLIDIFICATION TEMPERATURE OF THE CHLOROFLUOROCARBON SOLVENT, AND (C) REMOVING THE CHLOROFLUOROCARBON SOLVENT, AND (C) FIED SOLUTION AT A TEMPERATURE EQUAL TO OR LOWER THAN THE SOLIDIFICATION TEMPERATURE OF SAID CHLOROFLUOROCARBON.

公开(公告)号：US3654066A

公开(公告)日：1972-04-04

申请号：US3654066D

申请日：1969-04-25

Applicant: KURARAY CO

Inventor： FUKUSHIMA OSAMU ,  ENOMOTO YUYA ,  SAITO YOSHITAMI

IPC: B29C44/56 ,  C08J9/28 ,  D06N3/00 ,  D06N3/14 ,  B32B3/26 ,  B32B27/40

CPC classification number: C08J9/28 ,  B29C44/5627 ,  C08J2201/0544 ,  D06N3/0043 ,  D06N3/14 ,  Y10T428/249953 ,  Y10T428/249979 ,  Y10T442/3325 ,  Y10T442/469 ,  Y10T442/647

Abstract: A POROUS POLYMERIC SHEET HAVING A SPECFIC GRAVITY OF LESS THAN 0.7 AND A THICKNESS OF 0.05 TO 2.0 MM. AND CONTAINING PORES INCLINED AT AN ANGLE OF LESS THAN 80* AGAINST THE PLANE OF THE SHEET AND HAVING A LENGTH OF 0.03 TO 10 MM. A SHEET MATERIAL COMPRISING SAID POROUS POLYMERIC SHEET AND A SUBSTRATE BOUND TO THE LOWER SURFACE OF SAID POROUS POLYMERIC SHEET. SAID POROUS POLYMERIC SHEET IS PRODUCED BY IMMERSING A POLYMER SOLUTION APPLIED TO A SUPPORT INTO A COAGULATION BATH UNDER A CONDITION OF RAPID COAGULATION RAPIDLY THE UPPER PORTION OF THE SOLUTION AND TO FORM MACROPORES IN THE INNER PORTION; STRESSING THE UPPER PORTION IN TRANSVERSE DIRECTION, THAT IS, A DIRECTION PARALLEL TO THE PLANE OF THE SUPPORT, IN THE BATH TO SHIFT THE UPPER PORTION TO TRANSVERSE DIRECTION AND TO INCLINE THE PORES FORMED; TREATING FURTHER THE LAYER WITH THE BATH TO COMPLETE THE COAGULATION, THEREBY FORMING POROUS STRUCTURE CONTAINING PORES INCLINED AT AN ANGLE OF LESS THAN 80* AGAINST THE PLANE; AND PEELING OFF THE RESULTING POROUS POLYMERIC SHEET FROM THE SUPPORT.

公开(公告)号：US3524791A

公开(公告)日：1970-08-18

申请号：US3524791D

申请日：1967-07-03

Applicant: DU PONT

Inventor： BETHMAN DONALD C ,  JAEGER JOSEPH ,  MANWARING WILLIAM F

IPC: D06N3/00 ,  C08J9/28 ,  D06N3/14 ,  D04H11/08

CPC classification number: D06N3/14 ,  C08J9/28 ,  C08J2201/0544 ,  Y10S428/904 ,  Y10T428/2395 ,  Y10T442/2033 ,  Y10T442/2139

公开(公告)号：US3516883A

公开(公告)日：1970-06-23

申请号：US3516883D

申请日：1967-02-01

Applicant: DU PONT

Inventor： HARPER LEE R

IPC: C08J9/28 ,  D06N3/14 ,  B32B3/00

CPC classification number: D06N3/14 ,  C08J9/28 ,  C08J2201/0544 ,  Y10S428/904 ,  Y10T442/2057