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GB2019412A - Cross-Linked Low Density Linear Polyethylenes - Google Patents

Cross-Linked Low Density Linear Polyethylenes

Info

Publication number
GB2019412A
GB2019412A GB7911916A GB7911916A GB2019412A GB 2019412 A GB2019412 A GB 2019412A GB 7911916 A GB7911916 A GB 7911916A GB 7911916 A GB7911916 A GB 7911916A GB 2019412 A GB2019412 A GB 2019412A
Authority
GB
United Kingdom
Prior art keywords
low density
cross
polymers
blends
density linear
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.)
Granted
Application number
GB7911916A
Other versions
GB2019412B (en
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.)
Raychem Ltd
Original Assignee
Raychem Ltd
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
Priority claimed from US05/894,511 external-priority patent/US4275180A/en
Application filed by Raychem Ltd filed Critical Raychem Ltd
Publication of GB2019412A publication Critical patent/GB2019412A/en
Application granted granted Critical
Publication of GB2019412B publication Critical patent/GB2019412B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4439—Auxiliary devices
    • G02B6/4471—Terminating devices ; Cable clamps
    • G02B6/4476—Terminating devices ; Cable clamps with heat-shrinkable elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/26—Polyalkenes
    • B01D71/261—Polyethylene
    • 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
    • B29C61/00—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
    • B29C61/003—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor characterised by the choice of material
    • 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
    • C08L23/04—Homopolymers or copolymers of ethene
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/20—Conductive material dispersed in non-conductive organic material
    • H01B1/24—Conductive material dispersed in non-conductive organic material the conductive material comprising carbon-silicon compounds, carbon or silicon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
    • H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/08—Cable junctions
    • H02G15/18—Cable junctions protected by sleeves, e.g. for communication cable
    • H02G15/1806—Heat shrinkable sleeves

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Optics & Photonics (AREA)
  • Dispersion Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Graft Or Block Polymers (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Abstract

Cross-linked polymeric compositions, especially blends of polymers, comprise a linear low density ethylene homo or copolymer having a density, prior to cross-linking, of not more than 0.94 gm/cm<3> at 25 DEG C and containing less than 30 methyl groups per 1000 carbon atoms and substantially no long branches. The linear low density polymer may be blended with branched low density polyethylenes, linear high density polyethylenes or ethylene/unsaturated aliphatic ester copolymers. The polymers and blends are especially useful in the production of dimensionally recoverable articles such as heat-shrinkable sleeves and membranes for use as separators in electrolytic cells and batteries.
GB7911916A 1978-04-07 1979-04-05 Cross-linked low density linear polyethylenes Expired GB2019412B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/894,511 US4275180A (en) 1977-04-12 1978-04-07 Polymer compositions

Publications (2)

Publication Number Publication Date
GB2019412A true GB2019412A (en) 1979-10-31
GB2019412B GB2019412B (en) 1982-09-15

Family

ID=25403178

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7911916A Expired GB2019412B (en) 1978-04-07 1979-04-05 Cross-linked low density linear polyethylenes

Country Status (3)

Country Link
JP (1) JPS559677A (en)
BE (1) BE875387A (en)
GB (1) GB2019412B (en)

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4322575A (en) 1978-12-13 1982-03-30 Raychem Limited Flame retardant compositions
EP0077679A2 (en) * 1981-10-19 1983-04-27 Raychem Limited Fire protection system
US4390666A (en) * 1981-08-14 1983-06-28 Asahi Kasei Kogyo Kabushiki Kaisha Polyethylene blend composition
GB2122626A (en) * 1982-06-15 1984-01-18 Nat Distillers Chem Corp Heat resistant resin composition
EP0099640A1 (en) * 1982-06-23 1984-02-01 Sumitomo Electric Industries Limited Cross-linked polyethylene insulated cables
EP0115905A2 (en) * 1983-01-06 1984-08-15 Raychem Limited Dimensionally heat recoverable article
EP0117026A2 (en) * 1983-01-06 1984-08-29 Raychem Limited Method of enclosing cables and pipes
US4485217A (en) * 1983-04-13 1984-11-27 Mobil Oil Corporation Method for reducing shrinkage of injection molded linear low density polyethylene
US4495334A (en) * 1980-04-03 1985-01-22 Nippon Oil Company Ltd. Ethylene polymer blend compositions
US4514465A (en) * 1984-05-30 1985-04-30 W. R. Grace & Co., Cryovac Div. Storm window film comprising at least five layers
US4525257A (en) * 1982-12-27 1985-06-25 Union Carbide Corporation Low level irradiated linear low density ethylene/alpha-olefin copolymers and film extruded therefrom
US4551380A (en) * 1984-05-10 1985-11-05 W. R. Grace & Co., Cryovac Div. Oriented heat-sealable multilayer packaging film
WO1985005216A1 (en) * 1984-05-03 1985-11-21 Unifos Kemi Ab Insulation composition for cables
EP0117025A3 (en) * 1983-01-06 1985-12-18 Raychem Limited Arrangement for enclosing substrates
EP0169640A2 (en) * 1984-05-30 1986-01-29 W.R. Grace & Co.-Conn. Oriented film comprising at least five layers
US4587303A (en) * 1982-04-27 1986-05-06 Bp Chemicals Limited Polyethylene blend and film
US4614764A (en) * 1985-03-06 1986-09-30 Mobil Oil Corporation Linear low density ethylene polymers blended with modified linear low density ethylene polymers
US4659871A (en) * 1982-10-01 1987-04-21 Raychem Limited Cable with flame retarded cladding
US4678836A (en) * 1984-01-03 1987-07-07 The Dow Chemical Company Blends of ethylene/acrylic acid copolymers with linear low density polyethylene
US4775722A (en) * 1986-09-17 1988-10-04 Nippon Oil Company, Limited Thermoplastic elastomer compositions
US4816517A (en) * 1982-09-29 1989-03-28 Vulkor, Incorporated Crosslinked polymer interdispersions containing polyolefin and method of making
US4839235A (en) * 1986-06-30 1989-06-13 W. R. Grace & Co. Oxygen barrier film
EP0621121A2 (en) * 1993-04-22 1994-10-26 Stewing Nachrichtentechnik GmbH &amp; Co. KG Berlin Process for reducing the tearability of a thermally shrinkable web
WO1995011793A2 (en) * 1993-10-29 1995-05-04 Cellpack Gmbh Tubular plastics foil, its use and its method of production
US5434010A (en) * 1988-12-19 1995-07-18 Viskase Corporation Heat shrinkable very low density polyethylene terpolymer film
US5508319A (en) * 1991-06-21 1996-04-16 Montell North America Inc. High melt strength, ethylene polymer, process for making it, and use thereof
US5763032A (en) * 1993-05-18 1998-06-09 Raychem Limited Heat-shrinkable article
US6593386B1 (en) 1999-09-13 2003-07-15 Sealed Air Corporation (U.S.) Compitable linear and branched ethylenic polymers and foams therefrom
WO2006054926A1 (en) * 2004-11-16 2006-05-26 Borealis Technology Oy A crosslinkable polyethylene composition, an electric cable comprising it, and a process for its preparation
US11161952B2 (en) 2014-03-10 2021-11-02 Hickory Springs Manufacturing Company Methods of insulating piping and other materials using high temperature non-crosslinked polyethylene-based foam

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56147838A (en) * 1980-04-18 1981-11-17 Nippon Oil Co Ltd Composition for forming insulation layer
CA1195792A (en) * 1981-09-16 1985-10-22 William J. Michie, Jr. Drip irrigation tubing cross-linked by irradiation and extrudable tube forming composition
JPS58118839A (en) * 1982-01-08 1983-07-15 Hitachi Cable Ltd Semiconductive composition
US4427725A (en) 1982-02-11 1984-01-24 Raychem Limited Dimensionally-recoverable article
JPS60231747A (en) * 1984-05-02 1985-11-18 Mitsui Petrochem Ind Ltd Thermoplastic elastomer
JPS61225236A (en) * 1985-03-30 1986-10-07 Mitsubishi Cable Ind Ltd Resin composition
JPS61228045A (en) * 1985-03-30 1986-10-11 Mitsubishi Cable Ind Ltd Resin composition
GB8614369D0 (en) * 1986-06-12 1986-07-16 Raychem Ltd Blocking arrangement
US4760116A (en) * 1986-11-26 1988-07-26 E. I. Du Pont De Nemours And Company Monolayer polyethylene shrink film
JPH0356517A (en) * 1989-07-26 1991-03-12 Sumitomo Bakelite Co Ltd Production of silane-grafted copolymer and insulated electric wire therefrom
JP2023097144A (en) 2021-12-27 2023-07-07 国立大学法人大阪大学 Glass powder composite and method for producing glass powder composite

Cited By (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4322575A (en) 1978-12-13 1982-03-30 Raychem Limited Flame retardant compositions
US4495334A (en) * 1980-04-03 1985-01-22 Nippon Oil Company Ltd. Ethylene polymer blend compositions
US4390666A (en) * 1981-08-14 1983-06-28 Asahi Kasei Kogyo Kabushiki Kaisha Polyethylene blend composition
EP0077679A2 (en) * 1981-10-19 1983-04-27 Raychem Limited Fire protection system
EP0077679A3 (en) * 1981-10-19 1984-07-18 Raychem Limited Fire protection system
US4587303A (en) * 1982-04-27 1986-05-06 Bp Chemicals Limited Polyethylene blend and film
GB2122626A (en) * 1982-06-15 1984-01-18 Nat Distillers Chem Corp Heat resistant resin composition
EP0099640A1 (en) * 1982-06-23 1984-02-01 Sumitomo Electric Industries Limited Cross-linked polyethylene insulated cables
US4816517A (en) * 1982-09-29 1989-03-28 Vulkor, Incorporated Crosslinked polymer interdispersions containing polyolefin and method of making
US4659871A (en) * 1982-10-01 1987-04-21 Raychem Limited Cable with flame retarded cladding
US4525257A (en) * 1982-12-27 1985-06-25 Union Carbide Corporation Low level irradiated linear low density ethylene/alpha-olefin copolymers and film extruded therefrom
EP0115905A3 (en) * 1983-01-06 1985-10-09 Raychem Limited Dimensionally heat recoverable article
EP0117026A3 (en) * 1983-01-06 1985-10-09 Raychem Limited Heat-recoverable article
EP0117025A3 (en) * 1983-01-06 1985-12-18 Raychem Limited Arrangement for enclosing substrates
EP0117026A2 (en) * 1983-01-06 1984-08-29 Raychem Limited Method of enclosing cables and pipes
EP0115905A2 (en) * 1983-01-06 1984-08-15 Raychem Limited Dimensionally heat recoverable article
US4485217A (en) * 1983-04-13 1984-11-27 Mobil Oil Corporation Method for reducing shrinkage of injection molded linear low density polyethylene
US4678836A (en) * 1984-01-03 1987-07-07 The Dow Chemical Company Blends of ethylene/acrylic acid copolymers with linear low density polyethylene
WO1985005216A1 (en) * 1984-05-03 1985-11-21 Unifos Kemi Ab Insulation composition for cables
AU578095B2 (en) * 1984-05-03 1988-10-13 Neste Oy Insulation composition for cables
US4551380A (en) * 1984-05-10 1985-11-05 W. R. Grace & Co., Cryovac Div. Oriented heat-sealable multilayer packaging film
EP0169640A3 (en) * 1984-05-30 1987-02-04 W.R. Grace & Co. Oriented film comprising at least five layers
US4643943A (en) * 1984-05-30 1987-02-17 W. R. Grace & Co., Cryovac Div. Multi-layer polyolefin shrink film
EP0169640A2 (en) * 1984-05-30 1986-01-29 W.R. Grace & Co.-Conn. Oriented film comprising at least five layers
US4514465A (en) * 1984-05-30 1985-04-30 W. R. Grace & Co., Cryovac Div. Storm window film comprising at least five layers
US4614764A (en) * 1985-03-06 1986-09-30 Mobil Oil Corporation Linear low density ethylene polymers blended with modified linear low density ethylene polymers
US4839235A (en) * 1986-06-30 1989-06-13 W. R. Grace & Co. Oxygen barrier film
US4775722A (en) * 1986-09-17 1988-10-04 Nippon Oil Company, Limited Thermoplastic elastomer compositions
US5434010A (en) * 1988-12-19 1995-07-18 Viskase Corporation Heat shrinkable very low density polyethylene terpolymer film
US5508319A (en) * 1991-06-21 1996-04-16 Montell North America Inc. High melt strength, ethylene polymer, process for making it, and use thereof
US5552104A (en) * 1991-06-21 1996-09-03 Montell North America Inc. High melt strength, ethylene polymer, process for making it, and use thereof
EP0621121A3 (en) * 1993-04-22 1994-12-07 Stewing Nachrichtentechnik Process for reducing the tearability of a thermally shrinkable web.
EP0621121A2 (en) * 1993-04-22 1994-10-26 Stewing Nachrichtentechnik GmbH &amp; Co. KG Berlin Process for reducing the tearability of a thermally shrinkable web
US5763032A (en) * 1993-05-18 1998-06-09 Raychem Limited Heat-shrinkable article
WO1995011793A3 (en) * 1993-10-29 1995-06-22 Cellpack Gmbh Tubular plastics foil, its use and its method of production
WO1995011793A2 (en) * 1993-10-29 1995-05-04 Cellpack Gmbh Tubular plastics foil, its use and its method of production
US6593386B1 (en) 1999-09-13 2003-07-15 Sealed Air Corporation (U.S.) Compitable linear and branched ethylenic polymers and foams therefrom
US6716914B2 (en) 1999-09-13 2004-04-06 Sealed Air Corporation (U.S.) Compatible linear and branched ethylenic polymers and foams therefrom
US6887912B2 (en) 1999-09-13 2005-05-03 Sealed Air Corporation (Us) Compatible linear and branched ethylenic polymers and foams therefrom
WO2006054926A1 (en) * 2004-11-16 2006-05-26 Borealis Technology Oy A crosslinkable polyethylene composition, an electric cable comprising it, and a process for its preparation
EA011958B1 (en) * 2004-11-16 2009-06-30 Бореалис Текнолоджи Ой A crosslincable polyethylene composition, an electric cable comprising it, and a process for its preparation
US11161952B2 (en) 2014-03-10 2021-11-02 Hickory Springs Manufacturing Company Methods of insulating piping and other materials using high temperature non-crosslinked polyethylene-based foam

Also Published As

Publication number Publication date
GB2019412B (en) 1982-09-15
BE875387A (en) 1979-10-08
JPS559677A (en) 1980-01-23
JPH0322416B2 (en) 1991-03-26

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Legal Events

Date Code Title Description
713A Proceeding under section 13 patents act 1977
PE20 Patent expired after termination of 20 years

Effective date: 19990404