WO1997021857A3 - Polyarylene sulfide melt blowing methods and products - Google Patents

Polyarylene sulfide melt blowing methods and products Download PDF

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Publication number
WO1997021857A3
WO1997021857A3 PCT/US1996/018983 US9618983W WO9721857A3 WO 1997021857 A3 WO1997021857 A3 WO 1997021857A3 US 9618983 W US9618983 W US 9618983W WO 9721857 A3 WO9721857 A3 WO 9721857A3
Authority
WO
WIPO (PCT)
Prior art keywords
polyarylene sulfide
products
melt blowing
present
blowing methods
Prior art date
Application number
PCT/US1996/018983
Other languages
French (fr)
Other versions
WO1997021857A2 (en
Inventor
Colin F Harwood
Isaak Vasserman
Thomas C Gsell
Original Assignee
Pall 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 Pall Corp filed Critical Pall Corp
Priority to DE69605024T priority Critical patent/DE69605024T4/en
Priority to JP09522062A priority patent/JP3128246B2/en
Priority to EP96942079A priority patent/EP0813623B1/en
Priority to DE69605024A priority patent/DE69605024D1/en
Publication of WO1997021857A2 publication Critical patent/WO1997021857A2/en
Publication of WO1997021857A3 publication Critical patent/WO1997021857A3/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
    • D01F6/76—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from other polycondensation products
    • D01F6/765—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from other polycondensation products from polyarylene sulfides
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L81/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur with or without nitrogen, oxygen or carbon only; Compositions of polysulfones; Compositions of derivatives of such polymers
    • C08L81/02—Polythioethers; Polythioether-ethers
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/098—Melt spinning methods with simultaneous stretching
    • D01D5/0985—Melt spinning methods with simultaneous stretching by means of a flowing gas (e.g. melt-blowing)
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
    • D01F6/94—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of other polycondensation products
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene
    • 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
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2929—Bicomponent, conjugate, composite or collateral fibers or filaments [i.e., coextruded sheath-core or side-by-side type]

Abstract

The present invention provides a method of preparing polyarylene sulfide fibers, particularly polyphenylene sulfide fibers, comprising melt blowing a blend of polyarylene sulfide and a polyolefin, wherein the polyolefin is present in the blend in an amount of up to about 40 % by weight of the total blend. The present invention also provides fibers, webs, and other products prepared in accordance with the present inventive method.
PCT/US1996/018983 1995-12-11 1996-11-27 Polyarylene sulfide melt blowing methods and products WO1997021857A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE69605024T DE69605024T4 (en) 1995-12-11 1996-11-27 MELT BLOW PROCESS FOR POLYARYL SULFIDE AND ITEMS
JP09522062A JP3128246B2 (en) 1995-12-11 1996-11-27 Polyarylene sulfide melt blow molding methods and products
EP96942079A EP0813623B1 (en) 1995-12-11 1996-11-27 Polyarylene sulfide melt blowing methods and products
DE69605024A DE69605024D1 (en) 1995-12-11 1996-11-27 MELT BLOW PROCESS FOR POLYARYL SULFIDE AND ITEMS

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US57031395A 1995-12-11 1995-12-11
US08/570,313 1996-02-08
US08/598,475 US5690873A (en) 1995-12-11 1996-02-08 Polyarylene sulfide melt blowing methods and products
US08/598,475 1996-02-08

Publications (2)

Publication Number Publication Date
WO1997021857A2 WO1997021857A2 (en) 1997-06-19
WO1997021857A3 true WO1997021857A3 (en) 1997-08-07

Family

ID=27075302

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1996/018983 WO1997021857A2 (en) 1995-12-11 1996-11-27 Polyarylene sulfide melt blowing methods and products

Country Status (7)

Country Link
US (1) US5690873A (en)
EP (1) EP0813623B1 (en)
JP (1) JP3128246B2 (en)
CA (1) CA2182040C (en)
DE (2) DE69605024T4 (en)
GB (1) GB2308122B (en)
WO (1) WO1997021857A2 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6130292A (en) * 1995-12-11 2000-10-10 Pall Corporation Polyarylene sulfide resin composition
US6110589A (en) * 1995-12-11 2000-08-29 Pall Corporation Polyarylene sulfide melt blown fibers and products
JP3951078B2 (en) * 1998-05-27 2007-08-01 大日本インキ化学工業株式会社 Polyarylene sulfide melt blown nonwoven fabric and method for producing the same
US6752847B2 (en) * 2001-11-30 2004-06-22 Bha Group Holdings, Inc. High temperature polymer filtration medium
JP4686105B2 (en) * 2002-07-12 2011-05-18 タピルス株式会社 Heat resistant separator and manufacturing method thereof
KR20060065698A (en) * 2003-08-18 2006-06-14 셰브론 필립스 케미컬 컴퍼니 엘피 Polyphenylene sulfide composition and application
US20050269011A1 (en) * 2004-06-02 2005-12-08 Ticona Llc Methods of making spunbonded fabrics from blends of polyarylene sulfide and a crystallinity enhancer
US7641055B2 (en) * 2005-11-10 2010-01-05 Donaldson Company, Inc. Polysulfone and poly(N-vinyl lactam) polymer alloy and fiber and filter materials made of the alloy
US8221531B2 (en) * 2007-12-31 2012-07-17 Chevron U.S.A. Inc. Crosslinked polyimide membrane, method for making the same using organic titanate catalysts to facilitate crosslinking and method of using the membrane for fluid separation
EP2305861A4 (en) * 2008-07-18 2013-05-15 Toray Industries Polyphenylene sulfide fiber, process for producing the same, wet-laid nonwoven fabric, and process for producing wet-laid nonwoven fabric
WO2011040718A2 (en) * 2009-09-30 2011-04-07 주식회사 아모메디 Nanofiber membrane for western blot and preparation method thereof
EP3406780B1 (en) * 2017-05-22 2020-01-08 Axel Nickel Annealed meltblown nonwoven fabric with high compression hardness
CN111349993B (en) * 2018-12-24 2021-07-16 上海钱丰纺织品有限公司 Acid-resistant flame-retardant yarn and acid-resistant textile and clothing made of same

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0001281A1 (en) * 1977-09-19 1979-04-04 Phillips Petroleum Company Polyarylene sulfide compositions and process for improving their workability
EP0158989A2 (en) * 1984-04-16 1985-10-23 Phillips Petroleum Company Poly(arylene sulfide)composition containing an ethylene polymer
EP0292186A2 (en) * 1987-05-19 1988-11-23 Shakespeare Company Novel monofilaments, process for the preparation thereof and fabrics thereof
JPS63315655A (en) * 1987-06-16 1988-12-23 東レ株式会社 Polyphenylene sulfide melt blow nonwoven fabric and its production
EP0316195A2 (en) * 1987-11-12 1989-05-17 Asahi Kasei Kogyo Kabushiki Kaisha Polyallylene Sulfide nonwoven fabric
EP0339240A2 (en) * 1988-03-29 1989-11-02 NYSSEN, Peter, Roger Polyphenylene sulfide microfibres
JPH0280651A (en) * 1988-09-16 1990-03-20 Teijin Ltd Web composed of ultrafine fiber of polyphenylene sulfide and production of the same web
JPH0397757A (en) * 1989-09-12 1991-04-23 Dainippon Ink & Chem Inc Polyphenylene sulfide resin composition
JPH0711556A (en) * 1993-06-21 1995-01-13 Tonen Chem Corp Apparatus for producing melt blown nonwoven fabric
JPH07138860A (en) * 1993-06-21 1995-05-30 Tonen Chem Corp Polyarylene sulfide melt-blown nonwoven fabric, and its production
EP0709499A1 (en) * 1994-10-18 1996-05-01 Hoechst Celanese Corporation Melt-blown polyarylene sulfide microfibers and method of making the same

Family Cites Families (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2411660A (en) * 1943-05-22 1946-11-26 Fred W Manning Method of making filter cartridges, abrasive sheets, scouring pads, and the like
US3825380A (en) * 1972-07-07 1974-07-23 Exxon Research Engineering Co Melt-blowing die for producing nonwoven mats
US3895091A (en) * 1973-04-27 1975-07-15 Phillips Petroleum Co Production of fibers from phenylene sulfide polymers
US4021281A (en) * 1973-08-31 1977-05-03 Pall Corporation Continuous production of nonwoven tubular webs from thermoplastic fibers and products
US3912695A (en) * 1974-04-08 1975-10-14 Phillips Petroleum Co Fibrous articles from phenylene sulfide polymers
US4110265A (en) * 1977-03-01 1978-08-29 Ionics Inc. Ion exchange membranes based upon polyphenylene sulfide
JPS55142757A (en) * 1979-04-17 1980-11-07 Asahi Chemical Ind Production of polyester extremely fine fiber web
JPS5633511A (en) * 1979-08-27 1981-04-04 Daihatsu Motor Co Ltd Device for measuring fuel consumption of internal combustion engine for vehicle
JPS5716954A (en) * 1980-06-27 1982-01-28 Toray Industries Long fiber nonwoven fabric comprising aromatic sulfide polymer fiber and method
JPS5831112A (en) * 1981-08-06 1983-02-23 Toray Ind Inc Polyphenylene sulfide fiber
US4500706A (en) * 1982-08-09 1985-02-19 Phillips Petroleum Company Method of producing extrusion grade poly(arylene sulfide)
JPH0796724B2 (en) * 1985-03-22 1995-10-18 呉羽化学工業株式会社 High-performance polyarylene thioether fiber and method for producing the same
JPS61289162A (en) * 1985-06-11 1986-12-19 日本バイリーン株式会社 Production of heat resistant nonwoven fabric
US4610916A (en) * 1985-10-31 1986-09-09 Shakespeare Company Monofilaments, and fabrics thereof
US4707228A (en) * 1986-06-06 1987-11-17 Treadwell Corporation Diaphragm for electrolytic and electrochemical cells
US5244467A (en) * 1986-09-26 1993-09-14 Toray Industries, Inc. Method for production of polyphenylene sulfone fibers
WO1988002414A1 (en) * 1986-09-26 1988-04-07 Toray Industries, Inc. Polyphenylene sulfone fiber and process for its production
DE3750923T3 (en) * 1986-09-30 1999-03-25 Sumitomo Chemical Co Thermoplastic resin composition.
JPS63213562A (en) * 1987-03-03 1988-09-06 Mitsui Petrochem Ind Ltd Fiber-reinforced and heat-resistant polyolefin composition
JPS63219653A (en) * 1987-03-06 1988-09-13 東レ株式会社 Extremely fine multifilament nonwoven fabric and its production
US4726987A (en) * 1987-04-03 1988-02-23 Gates Formed-Fibre Products, Inc. Fire retardant structural textile panel
US4806407A (en) * 1987-05-19 1989-02-21 Shakespeare Company Monofilaments, fabrics thereof and related process
US4801492A (en) * 1987-05-19 1989-01-31 Shakespeare Company Novel monofilaments and fabrics thereof
US5009519A (en) * 1987-05-28 1991-04-23 Tatum David M Sealing assembly for relatively movable members
IT1205166B (en) * 1987-06-22 1989-03-15 Testori Spa Flli POROUS SEPARATOR ELEMENT COMPLETELY CONSTITUTED BY POLYPHENYLENE SULFIDE, FOR WATER ELECTROLYSIS
US5043112A (en) * 1987-10-09 1991-08-27 The Dow Chemical Company Process for forming articles comprising poly(phenylene sulfide) (PPS)
US4921558A (en) * 1987-11-16 1990-05-01 Phillips Petroleum Company Poly(arylene sulfide) composites
JPH01146955A (en) * 1987-12-03 1989-06-08 Kureha Chem Ind Co Ltd Polyphenylene sulfide resin composition and its production
CA1335127C (en) * 1988-02-15 1995-04-04 Motonobu Furuta Thermoplastic resin composition
JPH0249023A (en) * 1988-05-25 1990-02-19 Mitsubishi Gas Chem Co Inc Resin composition
DE3829766A1 (en) * 1988-09-01 1990-03-22 Akzo Gmbh METHOD FOR PRODUCING MEMBRANES
DE3900915A1 (en) * 1989-01-13 1990-07-26 Bayer Ag ARYLENE SULFIDE POLYMER MOLDS WITH IMPROVED PROCESSABILITY
JP2674181B2 (en) * 1989-02-09 1997-11-12 住友化学工業株式会社 Thermoplastic resin composition
JPH0341151A (en) * 1989-07-10 1991-02-21 Sumitomo Chem Co Ltd Thermoplastic resin composition
JP2926513B2 (en) * 1989-12-11 1999-07-28 住友化学工業株式会社 Resin composition and method for producing the same
US5021288A (en) * 1990-01-04 1991-06-04 The Dow Chemical Company Microfibers of syndiotactic vinyl aromatic polymers, nonwoven mats of the microfibers
KR960003932B1 (en) * 1990-03-28 1996-03-23 미쯔이 도오아쯔가가꾸 가부시끼가이샤 Modified polyolefin composition
US5300568A (en) * 1990-06-11 1994-04-05 Sumitomo Chemical Company, Limited Thermoplastic resin composition
JP3019106B2 (en) * 1990-10-08 2000-03-13 東ソー株式会社 Method for producing polyarylene sulfide
US5227427A (en) * 1990-12-17 1993-07-13 Polyplastics Co., Ltd. Polyarylene sulfide resin composition and process for the preparation of the same
US5266621A (en) * 1991-03-21 1993-11-30 Phillips Petroleum Company Polymethylpentene compositions
JP3036710B2 (en) * 1991-05-16 2000-04-24 日本ジーイープラスチックス株式会社 Polyphenylene sulfide resin composition
EP0527055B1 (en) * 1991-08-06 1997-11-05 Tosoh Corporation Process for the preparation of polyarylene sulfide
US5180775A (en) * 1991-09-03 1993-01-19 Eastman Kodak Company Blends of copoly(arylene sulfide) and ethylene-propylene rubber
JPH05230609A (en) * 1992-02-19 1993-09-07 Nisshin Steel Co Ltd Manufacture of hot-dip aluminum plated chromium-containing steel sheet
US5430102A (en) * 1993-03-08 1995-07-04 General Electric Modified high heat amorphous crystalline blends
DE69418751T2 (en) * 1993-03-19 1999-11-11 Mitsubishi Chem Corp Thermoplastic resin composition
US5424012A (en) * 1994-01-11 1995-06-13 Cylatec Corp. Method for purging thermoplastic extruders

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0001281A1 (en) * 1977-09-19 1979-04-04 Phillips Petroleum Company Polyarylene sulfide compositions and process for improving their workability
EP0158989A2 (en) * 1984-04-16 1985-10-23 Phillips Petroleum Company Poly(arylene sulfide)composition containing an ethylene polymer
EP0292186A2 (en) * 1987-05-19 1988-11-23 Shakespeare Company Novel monofilaments, process for the preparation thereof and fabrics thereof
JPS63315655A (en) * 1987-06-16 1988-12-23 東レ株式会社 Polyphenylene sulfide melt blow nonwoven fabric and its production
EP0316195A2 (en) * 1987-11-12 1989-05-17 Asahi Kasei Kogyo Kabushiki Kaisha Polyallylene Sulfide nonwoven fabric
EP0339240A2 (en) * 1988-03-29 1989-11-02 NYSSEN, Peter, Roger Polyphenylene sulfide microfibres
JPH0280651A (en) * 1988-09-16 1990-03-20 Teijin Ltd Web composed of ultrafine fiber of polyphenylene sulfide and production of the same web
JPH0397757A (en) * 1989-09-12 1991-04-23 Dainippon Ink & Chem Inc Polyphenylene sulfide resin composition
JPH0711556A (en) * 1993-06-21 1995-01-13 Tonen Chem Corp Apparatus for producing melt blown nonwoven fabric
JPH07138860A (en) * 1993-06-21 1995-05-30 Tonen Chem Corp Polyarylene sulfide melt-blown nonwoven fabric, and its production
EP0709499A1 (en) * 1994-10-18 1996-05-01 Hoechst Celanese Corporation Melt-blown polyarylene sulfide microfibers and method of making the same

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 8906, Derwent World Patents Index; Class A26, AN 89-043266, XP002028784 *
DATABASE WPI Section Ch Week 9018, Derwent World Patents Index; Class A26, AN 90-134630, XP002028783 *
DATABASE WPI Section Ch Week 9512, Derwent World Patents Index; Class A26, AN 95-085945, XP002028782 *
DATABASE WPI Section Ch Week 9530, Derwent World Patents Index; Class A26, AN 95-229173, XP002028781 *
PATENT ABSTRACTS OF JAPAN vol. 015, no. 282 (C - 0850) 17 July 1991 (1991-07-17) *

Also Published As

Publication number Publication date
CA2182040C (en) 2006-07-11
DE69605024T4 (en) 2000-10-19
GB2308122B (en) 1999-06-09
US5690873A (en) 1997-11-25
EP0813623B1 (en) 1999-11-03
GB9623122D0 (en) 1997-01-08
GB2308122A (en) 1997-06-18
WO1997021857A2 (en) 1997-06-19
EP0813623A2 (en) 1997-12-29
DE69605024D1 (en) 1999-12-09
CA2182040A1 (en) 1997-06-12
JP3128246B2 (en) 2001-01-29
DE69605024T2 (en) 2000-04-20
JPH11501089A (en) 1999-01-26

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