ES8502637A1 - Un procedimiento para producir un material poroso de polimero de politetrafluoroetileno - Google Patents

Un procedimiento para producir un material poroso de polimero de politetrafluoroetileno

Info

Publication number
ES8502637A1
ES8502637A1 ES525496A ES525496A ES8502637A1 ES 8502637 A1 ES8502637 A1 ES 8502637A1 ES 525496 A ES525496 A ES 525496A ES 525496 A ES525496 A ES 525496A ES 8502637 A1 ES8502637 A1 ES 8502637A1
Authority
ES
Spain
Prior art keywords
porous ptfe
materials
larger
densification
coarse
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
ES525496A
Other languages
English (en)
Other versions
ES525496A0 (es
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WL Gore and Associates Inc
Original Assignee
WL Gore and Associates Inc
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27023364&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES8502637(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from US06/416,466 external-priority patent/US4482516A/en
Application filed by WL Gore and Associates Inc filed Critical WL Gore and Associates Inc
Publication of ES525496A0 publication Critical patent/ES525496A0/es
Publication of ES8502637A1 publication Critical patent/ES8502637A1/es
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • B29C55/005—Shaping by stretching, e.g. drawing through a die; Apparatus therefor characterised by the choice of materials
    • 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
    • D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F6/08—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polymers of halogenated hydrocarbons
    • D01F6/12—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polymers of halogenated hydrocarbons from polymers of fluorinated hydrocarbons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
    • B29K2027/18—PTFE, i.e. polytetrafluorethene, e.g. ePTFE, i.e. expanded polytetrafluorethene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • 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
    • C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
    • C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2327/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C08J2327/18—Homopolymers or copolymers of tetrafluoroethylene

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Textile Engineering (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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PROCEDIMIENTO PARA LA PRODUCCION DE UN MATERIAL POROSO DE POLIMERO DE POLITETRAFLUOROETILENO, QUE ESTA FORMADO POR NODULOS RELATIAVEMNTE GRANDES INTERCONECTADOS POR FIBRILLAS RELATIVAMENTE LARGAS.COMPRENDE LAS SIGUIENTES OPERACIONES: PRIMERA, SE PREPARA UN MATERIAL A PARTIR DE UN PRODUCTO EXTRUIDO DE POLITETRAFLUOROETILENO, QUE SE EXTRUYE EN FORMA DE PASTA, Y DEL CUAL SE ELIMINA TODO EL LUBRICANTE AUXILIAR DE EXTRUSION; SEGUNDA, SE AUMENTA SUSTANCIALMENTE LA DENSIDAD DE DICHO PRODUCTO EXTRUIDO SE CO; Y POR ULTIMO, SE ESTIRA EL PRODUCTO EXTRUIDO SECO Y SE DENSIFICA A UNA TEMPERATURA ELEVADA PERO INFERIOR A LA TEMPERATURA DE FUSION CRISTALINA.
ES525496A 1982-09-10 1983-09-08 Un procedimiento para producir un material poroso de polimero de politetrafluoroetileno Expired ES8502637A1 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US41646582A 1982-09-10 1982-09-10
US06/416,466 US4482516A (en) 1982-09-10 1982-09-10 Process for producing a high strength porous polytetrafluoroethylene product having a coarse microstructure

Publications (2)

Publication Number Publication Date
ES525496A0 ES525496A0 (es) 1985-01-16
ES8502637A1 true ES8502637A1 (es) 1985-01-16

Family

ID=27023364

Family Applications (1)

Application Number Title Priority Date Filing Date
ES525496A Expired ES8502637A1 (es) 1982-09-10 1983-09-08 Un procedimiento para producir un material poroso de polimero de politetrafluoroetileno

Country Status (7)

Country Link
EP (1) EP0106496B2 (es)
DE (1) DE3377288D1 (es)
DK (1) DK410383A (es)
ES (1) ES8502637A1 (es)
FI (1) FI77880C (es)
NO (1) NO833230L (es)
PT (1) PT77321B (es)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3608158A1 (de) * 1986-03-12 1987-09-17 Braun Melsungen Ag Mit vernetzter gelatine impraegnierte gefaessprothese und verfahren zu ihrer herstellung
US4867881A (en) * 1987-09-14 1989-09-19 Minnesota Minning And Manufacturing Company Orientied microporous film
DE3879613T2 (de) * 1987-10-19 1993-10-07 Gore & Ass Schnellrückstellbares PTFE und Verfahren zu dessen Herstellung.
US4877661A (en) * 1987-10-19 1989-10-31 W. L. Gore & Associates, Inc. Rapidly recoverable PTFE and process therefore
US4902423A (en) * 1989-02-02 1990-02-20 W. L. Gore & Associates, Inc. Highly air permeable expanded polytetrafluoroethylene membranes and process for making them
US5296292A (en) * 1990-09-04 1994-03-22 W. L. Gore & Associates, Inc. Elongated cylindrical tensile article
CA2192457C (en) * 1994-07-27 2002-02-19 Thane L. Kranzler High strength porous ptfe sheet material
US5552100A (en) * 1995-05-02 1996-09-03 Baxter International Inc. Method for manufacturing porous fluoropolymer films
US6923927B2 (en) 2000-10-03 2005-08-02 Atrium Medical Corporation Method for forming expandable polymers having drugs or agents included therewith
US6616876B1 (en) 2000-10-03 2003-09-09 Atrium Medical Corporation Method for treating expandable polymer materials
AU2002225660A1 (en) * 2001-11-21 2003-06-10 Atrium Medical Corporation Method for treating expandable polymer materials and products produced therefrom
AU2002358691A1 (en) 2001-12-14 2003-06-30 Aesculap Ag And Co. Kg Vessel prosthesis, particularly for the replacement of aorta segments near the heart
EP1355204A3 (en) * 2002-04-19 2004-04-14 W.L. Gore & Associates, Inc. Polytetrafluoroethylene film & manufacture of same
DE112020005959T5 (de) * 2019-12-05 2022-09-22 Nitto Denko Corporation Gestreckte poröse polytetrafluorethylen-membran, luftdurchlässiges medium, bei dem diese verwendet wird, und filterelement, bei dem diese verwendet wird
EP4335538A1 (en) * 2019-12-13 2024-03-13 W. L. Gore & Associates, Inc. Porous polytetrafluoroethylene membrane having a macro-textured surface and method for making the same

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3962153A (en) * 1970-05-21 1976-06-08 W. L. Gore & Associates, Inc. Very highly stretched polytetrafluoroethylene and process therefor
CA962021A (en) * 1970-05-21 1975-02-04 Robert W. Gore Porous products and process therefor
US4049589A (en) * 1973-03-19 1977-09-20 Sumitomo Electric Industries, Ltd. Porous films of polytetrafluoroethylene and process for producing said films
JPS5334868A (en) * 1976-09-13 1978-03-31 Sumitomo Electric Industries Fine porous tube

Also Published As

Publication number Publication date
ES525496A0 (es) 1985-01-16
EP0106496B2 (en) 1996-09-11
PT77321A (en) 1983-10-01
DK410383D0 (da) 1983-09-09
FI77880B (fi) 1989-01-31
EP0106496A3 (en) 1986-02-19
FI77880C (fi) 1989-05-10
NO833230L (no) 1984-03-12
EP0106496A2 (en) 1984-04-25
FI833179A0 (fi) 1983-09-06
FI833179A (fi) 1984-03-11
DE3377288D1 (en) 1988-08-11
DK410383A (da) 1984-03-11
PT77321B (en) 1986-02-06
EP0106496B1 (en) 1988-07-06

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