NL190056C - Werkwijze voor de vervaardiging van opencellige microporeuze polypropeenfilms. - Google Patents

Werkwijze voor de vervaardiging van opencellige microporeuze polypropeenfilms.

Info

Publication number
NL190056C
NL190056C NLAANVRAGE7407177,A NL7407177A NL190056C NL 190056 C NL190056 C NL 190056C NL 7407177 A NL7407177 A NL 7407177A NL 190056 C NL190056 C NL 190056C
Authority
NL
Netherlands
Prior art keywords
polypropene
films
manufacture
open
cell microporous
Prior art date
Application number
NLAANVRAGE7407177,A
Other languages
English (en)
Other versions
NL7407177A (nl
NL190056B (nl
Original Assignee
Celanese Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Celanese Corp filed Critical Celanese Corp
Publication of NL7407177A publication Critical patent/NL7407177A/xx
Publication of NL190056B publication Critical patent/NL190056B/nl
Application granted granted Critical
Publication of NL190056C publication Critical patent/NL190056C/nl

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0002—Organic membrane manufacture
    • B01D67/0023—Organic membrane manufacture by inducing porosity into non porous precursor membranes
    • B01D67/0025—Organic membrane manufacture by inducing porosity into non porous precursor membranes by mechanical treatment, e.g. pore-stretching
    • B01D67/0027—Organic membrane manufacture by inducing porosity into non porous precursor membranes by mechanical treatment, e.g. pore-stretching by stretching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/04—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
    • B29C55/06—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique parallel with the direction of feed
    • B29C55/065—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique parallel with the direction of feed in several stretching steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/20—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for porous or cellular articles, e.g. of foam plastics, coarse-pored
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/10—Homopolymers or copolymers of propene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2359/00—Characterised by the use of polyacetals containing polyoxymethylene sequences only
    • C08J2359/02—Copolyoxymethylenes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/73—Processes of stretching
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/91—Product with molecular orientation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31—Surface property or characteristic of web, sheet or block

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Materials Engineering (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Molding Of Porous Articles (AREA)
NLAANVRAGE7407177,A 1973-05-30 1974-05-29 Werkwijze voor de vervaardiging van opencellige microporeuze polypropeenfilms. NL190056C (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00365365A US3843761A (en) 1973-05-30 1973-05-30 Process for preparing a thermoplastic microporous film involving a cold stretching step and multiple hot stretching steps

Publications (3)

Publication Number Publication Date
NL7407177A NL7407177A (nl) 1974-12-03
NL190056B NL190056B (nl) 1993-05-17
NL190056C true NL190056C (nl) 1993-10-18

Family

ID=23438584

Family Applications (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE7407177,A NL190056C (nl) 1973-05-30 1974-05-29 Werkwijze voor de vervaardiging van opencellige microporeuze polypropeenfilms.

Country Status (10)

Country Link
US (1) US3843761A (nl)
JP (1) JPS5747017B2 (nl)
BE (1) BE815725A (nl)
BR (1) BR7404451D0 (nl)
CA (1) CA1035517A (nl)
DE (1) DE2426193C2 (nl)
FR (1) FR2231504B1 (nl)
GB (1) GB1452977A (nl)
IT (1) IT1012965B (nl)
NL (1) NL190056C (nl)

Families Citing this family (108)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4176148A (en) * 1971-08-30 1979-11-27 Princeton Chemical Research, Inc. Method of manufacturing microporous paper-like butene-1 polymer sheets
US4138459A (en) * 1975-09-08 1979-02-06 Celanese Corporation Process for preparing a microporous polymer film
JPS5579996A (en) * 1978-12-14 1980-06-16 Teijin Ltd Wet heat exchanger
GB2055855A (en) * 1979-08-07 1981-03-11 Ici Ltd Heat-treating polyolefin films
US4418510A (en) * 1979-09-12 1983-12-06 Lantech, Inc. Stretch wrapping apparatus and process
US4336679A (en) * 1979-11-21 1982-06-29 Lantech Inc. Film web drive stretch wrapping apparatus and process
JPS56159128A (en) * 1980-05-15 1981-12-08 Asahi Chem Ind Co Ltd Thermoplastic resin porous film and production thereof
US4387552A (en) * 1980-09-08 1983-06-14 Lantech, Inc. Wrapping apparatus
US4712686A (en) * 1980-09-08 1987-12-15 Lantech, Inc. Power assisted roller-stretch apparatus and process
US4530809A (en) * 1980-10-14 1985-07-23 Mitsubishi Rayon Co., Ltd. Process for making microporous polyethylene hollow fibers
US4413463A (en) * 1980-10-23 1983-11-08 Lantech, Inc. Roller stretch pass through stretching apparatus and process
US4472328A (en) * 1981-06-09 1984-09-18 Mitsubishi Chemical Industries, Ltd. Process for producing porous film or sheet
US4647416A (en) * 1983-08-03 1987-03-03 Shiley Incorporated Method of preparing a vascular graft prosthesis
US4550447A (en) * 1983-08-03 1985-11-05 Shiley Incorporated Vascular graft prosthesis
US4613643A (en) * 1984-02-09 1986-09-23 Tokuyama Soda Kabushiki Kaisha Porous sheet
JPS61121925A (ja) * 1984-11-19 1986-06-09 Mitsubishi Petrochem Co Ltd 通気性フイルムの製造方法
JPS61146308A (ja) * 1984-12-21 1986-07-04 Ube Ind Ltd 多孔質ポリプロピレン中空糸又はフイルムの製造法
US4650730A (en) * 1985-05-16 1987-03-17 W. R. Grace & Co. Battery separator
US4620956A (en) * 1985-07-19 1986-11-04 Celanese Corporation Process for preparing microporous polyethylene film by uniaxial cold and hot stretching
ZA865173B (en) * 1985-07-31 1987-03-25 Celanese Corp Immobilized liquid membrane
US5110326A (en) * 1985-07-31 1992-05-05 Celanese Corporation Immobilized liquid membrane
US4699857A (en) * 1986-10-15 1987-10-13 W. R. Grace & Co. Battery separator
US4713068A (en) * 1986-10-31 1987-12-15 Kimberly-Clark Corporation Breathable clothlike barrier having controlled structure defensive composite
US4713069A (en) * 1986-10-31 1987-12-15 Kimberly-Clark Corporation Baffle having zoned water vapor permeability
US4758239A (en) * 1986-10-31 1988-07-19 Kimberly-Clark Corporation Breathable barrier
US4861644A (en) * 1987-04-24 1989-08-29 Ppg Industries, Inc. Printed microporous material
US4833172A (en) * 1987-04-24 1989-05-23 Ppg Industries, Inc. Stretched microporous material
US4818600A (en) * 1987-12-09 1989-04-04 Kimberly-Clark Corporation Latex coated breathable barrier
US5013439A (en) * 1988-05-12 1991-05-07 Hoechst Celanese Corporation Microporous membranes having increased pore densities and process for making the same
US4994335A (en) * 1988-09-10 1991-02-19 Ube Industries, Ltd. Microporous film, battery separator employing the same, and method of producing them
US5173235A (en) * 1988-09-10 1992-12-22 Ube Industries, Ltd. Method of producing microporous film
CA2007160C (en) * 1989-01-09 1997-08-19 Gunilla E. Gillberg-Laforce Microporus membrane from cold-rolled precursor films
US4975469A (en) * 1989-03-20 1990-12-04 Amoco Corporation Oriented porous polypropylene films
US4973532A (en) * 1989-04-05 1990-11-27 Hoechst Celanese Corporation Battery separator with integral thermal fuse
JP2628788B2 (ja) * 1990-08-09 1997-07-09 宇部興産株式会社 微多孔性膜の製造方法及びその方法で製造される耐溶断性微多孔性膜
US5176953A (en) * 1990-12-21 1993-01-05 Amoco Corporation Oriented polymeric microporous films
US5981038A (en) * 1991-10-18 1999-11-09 3M Innovative Properties Company Minnesota Mining And Manufacturing Co. Laminate preventing transmissions of viral pathogens
US5690949A (en) * 1991-10-18 1997-11-25 Minnesota Mining And Manufacturing Company Microporous membrane material for preventing transmission of viral pathogens
US5507949A (en) * 1992-03-20 1996-04-16 Monsanto Company Supported liquid membrane and separation process employing same
DK0561760T3 (da) * 1992-03-20 1999-05-25 Monsanto Co Ekstraktion af organiske forbindelser fra vandige opløsninger
US5891544A (en) * 1993-08-03 1999-04-06 The Procter & Gamble Company Web materials exhibiting elastic-like behavior
US5518801A (en) * 1993-08-03 1996-05-21 The Procter & Gamble Company Web materials exhibiting elastic-like behavior
US5916663A (en) * 1993-08-03 1999-06-29 Chappell; Charles W. Web materials exhibiting elastic-like behavior
WO1995014453A2 (en) * 1993-11-19 1995-06-01 The Procter & Gamble Company Absorbent article with structural elastic-like film web waist belt
US5554145A (en) 1994-02-28 1996-09-10 The Procter & Gamble Company Absorbent article with multiple zone structural elastic-like film web extensible waist feature
US5667911A (en) 1994-11-17 1997-09-16 Hoechst Celanese Corporation Methods of making cross-ply microporous membrane battery separator, and the battery separators made thereby
US5565281A (en) * 1994-12-02 1996-10-15 Hoechst Celanese Corporation Shutdown, bilayer battery separator
TW297171B (nl) 1994-12-20 1997-02-01 Hoechst Celanese Corp
US5786058A (en) * 1995-04-03 1998-07-28 Minnesota Mining & Mfg Thermally bonded viral barrier composite
US5682618A (en) * 1995-04-03 1997-11-04 Minnesota Mining And Manufacturing Company Viral resistant seam for protective apparel, and method of manufacturing same
CA2239425C (en) * 1995-12-04 2001-07-24 The Procter & Gamble Company Web materials having elastic-like and expansive zones
US5650214A (en) * 1996-05-31 1997-07-22 The Procter & Gamble Company Web materials exhibiting elastic-like behavior and soft, cloth-like texture
US6183856B1 (en) * 1996-07-25 2001-02-06 Mobil Oil Corporation Opaque polymeric films and processes for making same
US6444356B1 (en) 1996-11-01 2002-09-03 Jackson C. Ma Lithium battery with secondary battery separator
US5976220A (en) * 1996-12-09 1999-11-02 3M Innovative Properties Company Diffusional gas transfer system and method using same
US6015764A (en) * 1996-12-27 2000-01-18 Kimberly-Clark Worldwide, Inc. Microporous elastomeric film/nonwoven breathable laminate and method for making the same
US6111163A (en) * 1996-12-27 2000-08-29 Kimberly-Clark Worldwide, Inc. Elastomeric film and method for making the same
US5947944A (en) * 1996-12-30 1999-09-07 Kimberly-Clark Worldwide, Inc. Stretched-thinned films comprising low crystallinity polymers and laminates thereof
US5910136A (en) * 1996-12-30 1999-06-08 Kimberly-Clark Worldwide, Inc. Oriented polymeric microporous films with flexible polyolefins
US6179939B1 (en) 1997-05-12 2001-01-30 Kimberly-Clark Worldwide, Inc. Methods of making stretched filled microporous films
KR19990040319A (ko) 1997-11-17 1999-06-05 성재갑 고분자 표면의 이온 입자 조사에 의한 미세 기공 막의 제조
EP1044261A1 (en) 1997-12-29 2000-10-18 Monsanto Company A membrane process for making enhanced flavor fluids
US6020394A (en) * 1998-02-23 2000-02-01 Celgard Llc Crosslinking of polymers
WO2000013878A1 (en) * 1998-09-04 2000-03-16 The Procter & Gamble Company Method of manufacturing microporous film having zone of deformation
US6472045B1 (en) 1998-12-23 2002-10-29 Kimberly-Clark Worldwide, Inc. Liquid transfer material of a transversely extensible and retractable necked laminate of non-elastic sheet layers
US6475600B1 (en) 1998-12-23 2002-11-05 Kimberly-Clark Worldwide, Inc. Composite material having stretch and recovery including a layer of an elastic material and a transversely extensible and retractable necked laminate of non-elastic sheet layers
US6610383B1 (en) 1998-12-23 2003-08-26 Kimberly-Clark Worldwide, Inc. Transversely extensible and retractable necked laminate of no-elastic sheet layers
CN1209404C (zh) 1999-09-01 2005-07-06 埃克森化学专利公司 透气膜及其制备方法
JP2003519723A (ja) 2000-01-10 2003-06-24 エルジー・ケミカル・カンパニー・リミテッド 高結晶性ポリプロピレンの微細気孔膜、多成分系微細気孔膜及びその製造方法
AR027330A1 (es) * 2000-02-09 2003-03-26 Itw Mima Films Llc Un metodo para fabricar pelicula estirada de plastico
US6432586B1 (en) 2000-04-10 2002-08-13 Celgard Inc. Separator for a high energy rechargeable lithium battery
US6821915B2 (en) * 2000-05-03 2004-11-23 Kimberly-Clark Worldwide, Inc. Film having high breathability induced by low cross-directional stretch
AU2001294715A1 (en) 2000-09-26 2002-04-08 Clemson University Chaotic mixing method and structured materials formed therefrom
US6579343B2 (en) * 2001-03-30 2003-06-17 University Of Notre Dame Du Lac Purification of gas with liquid ionic compounds
US6824680B2 (en) 2001-05-07 2004-11-30 New Jersey Institute Of Technology Preparation of microporous films from immiscible blends via melt processing and stretching
JP2003085910A (ja) * 2001-09-11 2003-03-20 Sony Corp ディスクカートリッジ、ディスク記録媒体装置及びディスク記録再生装置
US6689509B2 (en) 2001-09-20 2004-02-10 Daramic, Inc. Laminated multilayer separator for lead-acid batteries
US6878226B2 (en) * 2002-01-08 2005-04-12 Wei-Ching Yu Continuous methods of making microporous battery separators
US7105089B2 (en) * 2003-03-13 2006-09-12 3M Innovative Properties Company Liquid—liquid extraction system and method
US7122709B2 (en) * 2003-03-13 2006-10-17 3M Innovative Properties Company Method for obtaining ethanol
US7182894B2 (en) * 2004-03-12 2007-02-27 Council Of Scientific & Industrial Research Process for the preparation of free standing membranes
ITMI20041150A1 (it) * 2004-06-09 2004-09-09 Novamont Spa Processo perla produzione di film biodegradabili aventi migliorate proprieta' meccaniche
KR100943697B1 (ko) * 2005-04-06 2010-02-23 에스케이에너지 주식회사 물성, 생산성 및 품질 균일도가 우수한 폴리에틸렌 미세다공막 및 그 제조방법
US7794593B2 (en) * 2005-11-30 2010-09-14 3M Innovative Properties Company Cross-flow membrane module
KR101231471B1 (ko) * 2007-10-02 2013-02-07 세키스이가가쿠 고교가부시키가이샤 열가소성 수지 연신 발포 시트 및 그의 제조 방법
TWI531511B (zh) * 2008-04-24 2016-05-01 沙地基本工業公司 可撓性中型散裝容器
TWI455967B (zh) * 2008-04-24 2014-10-11 Saudi Basic Ind Corp 不透明聚酯薄膜的製造方法
US9951008B2 (en) 2009-11-03 2018-04-24 University Of Notre Dame Du Lac Ionic liquids comprising heteraromatic anions
JP2011246658A (ja) * 2010-05-28 2011-12-08 Sekisui Chem Co Ltd プロピレン系樹脂微孔フィルム及びその製造方法
KR101943126B1 (ko) 2011-04-04 2019-01-28 아포러스, 인크. 개선된 배터리 분리막 및 그의 형성 방법
US20140377397A1 (en) * 2011-05-17 2014-12-25 Ole-Bendt Rasmussen Apparatus for manufacture of a polymer film, which is oriented under an angle to its longitudinal direction
CN102263220B (zh) * 2011-06-22 2014-09-24 广东博特动力能源有限公司 电池隔膜的制备方法
JP5861832B2 (ja) 2011-06-30 2016-02-16 Jnc株式会社 微多孔膜
US9362540B2 (en) 2011-09-17 2016-06-07 Sekisui Chemical Co., Ltd. Method for producing propylene-based resin microporous film and propylene-based resin microporous film
US20140349357A1 (en) 2011-12-14 2014-11-27 3M Innovative Properties Company Methods of producing butanol from non-cellulosic biomass
CN109037562A (zh) 2012-09-20 2018-12-18 赛尔格有限责任公司 薄电池隔板和方法
CN102908910A (zh) * 2012-11-16 2013-02-06 广东工业大学 一种聚偏氟乙烯多孔膜的制备方法
CN106574071B (zh) 2014-08-21 2020-05-29 W·W·严 微孔片材产品及其制备和使用方法
US10829600B2 (en) 2014-11-05 2020-11-10 William Winchin Yen Microporous sheet product and methods for making and using the same
JP2017535642A (ja) 2014-11-05 2017-11-30 イエン，ウイリアム・ウインチン 微孔性シート製品、ならびに、その製造方法及び使用方法
BR112018000507B1 (pt) 2015-07-10 2023-01-24 Berry Global, Inc Processo para a fabricação de um filme respirável microporoso
CN108778674B (zh) 2015-11-05 2022-02-11 贝瑞全球有限公司 聚合物膜和用于制造聚合物膜的方法
US11472085B2 (en) 2016-02-17 2022-10-18 Berry Plastics Corporation Gas-permeable barrier film and method of making the gas-permeable barrier film
EP3474909A1 (en) 2016-06-28 2019-05-01 Dow Global Technologies Llc Microporous films, and articles made therefrom
TWI758301B (zh) 2016-06-28 2022-03-21 美商陶氏全球科技有限責任公司 多層膜、包括多層膜之製品、製造多層膜之方法
US11680159B2 (en) 2019-09-30 2023-06-20 Ddp Specialty Electronic Materials Us, Llc Polyolefin-based microporous films via sequential cold and hot stretching of unannealed polypropylene copolymer films
WO2022197301A1 (en) 2021-03-18 2022-09-22 Ddp Specialty Electronic Materials Us, Llc Polyolefin-based microporous films via sequential cold and hot stretching of unannealed polypropylene copolymer films
US11674026B2 (en) 2021-03-18 2023-06-13 Ddp Specialty Electronic Materials Us, Llc Polyolefin-based microporous films via sequential cold and hot stretching of unannealed polypropylene copolymer films

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3549743A (en) * 1967-05-15 1970-12-22 Chemcell Ltd Multistage drawing technique
BE758823A (fr) * 1969-11-13 1971-05-12 Celanese Corp Pellicule de polymere microporeux a cellules ouvertes et son obtention

Also Published As

Publication number Publication date
DE2426193A1 (de) 1974-12-19
US3843761A (en) 1974-10-22
DE2426193C2 (de) 1984-08-30
NL7407177A (nl) 1974-12-03
CA1035517A (en) 1978-08-01
NL190056B (nl) 1993-05-17
BR7404451D0 (pt) 1975-09-30
IT1012965B (it) 1977-03-10
JPS5747017B2 (nl) 1982-10-06
FR2231504B1 (nl) 1978-01-27
FR2231504A1 (nl) 1974-12-27
GB1452977A (en) 1976-10-20
BE815725A (fr) 1974-12-02
JPS5022068A (nl) 1975-03-08

Similar Documents

Publication Publication Date Title
NL190056C (nl) Werkwijze voor de vervaardiging van opencellige microporeuze polypropeenfilms.
NL7503691A (nl) Werkwijze voor de vervaardiging van beklede films.
NL7414283A (nl) Werkwijze voor de bereiding van silanen.
NL7416288A (nl) Werkwijze voor de bereiding van dialkylthiofos- faten.
NL183514C (nl) Werkwijze voor de bereiding van aldehyden.
NL7410730A (nl) Werkwijze voor de bereiding van 5-fluorcytosine.
NL153205B (nl) Werkwijze voor de bereiding van organotintrihalogeniden.
NL161976C (nl) Werkwijze voor de bereiding van diepvries-patates frites.
NL158169B (nl) Werkwijze voor de bereiding van (+)-2-aminobutanol-1.
NL7409050A (nl) Werkwijze voor de bereiding van cefalospo- rine-verbindingen.
NL7511224A (nl) Werkwijze voor de vervaardiging van elektroband.
NL7415435A (nl) Werkwijze voor de bereiding van cefalosporine- verbindingen.
NL7409325A (nl) Werkwijze voor de selectieve vinylanaloge polymerisatie van norborneen.
NL7414734A (nl) Werkwijze voor de continue vervaardiging van laminaatbanden.
NL7414635A (nl) Werkwijze voor de bereiding van acetonine.
NL7416714A (nl) Werkwijze voor de bereiding van 1-aminoantra- chinon.
NL151347B (nl) Werkwijze voor de bereiding van diprenylverbindingen.
NL179279C (nl) Werkwijze voor de bereiding van tereftalonitril.
NL7503876A (nl) Werkwijze voor de bereiding van hydrazinocefa- losporineverbindingen.
NL7504718A (nl) Werkwijze voor de bereiding van 5-nitro- imidazoolverbindingen.
NL7410433A (nl) Werkwijze voor de bereiding van tereftaal- dialdehyde.
NL7412527A (nl) Werkwijze voor de vervaardiging van glazen erpen.
NL180104C (nl) Werkwijze voor de bereiding van benzylpyrimidinen.
NL7413660A (nl) Werkwijze voor de bereiding van trimethyl-p-ben- zochinon.
NL163204C (nl) Werkwijze voor de bereiding van beta-isoforon.

Legal Events

Date Code Title Description
BA A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
A85 Still pending on 85-01-01
V4 Discontinued because of reaching the maximum lifetime of a patent