GB1432419A - Process for producing cellular polyolefin - Google Patents

Process for producing cellular polyolefin

Info

Publication number
GB1432419A
GB1432419A GB3002273A GB3002273A GB1432419A GB 1432419 A GB1432419 A GB 1432419A GB 3002273 A GB3002273 A GB 3002273A GB 3002273 A GB3002273 A GB 3002273A GB 1432419 A GB1432419 A GB 1432419A
Authority
GB
United Kingdom
Prior art keywords
polyolefine
polytetrafluoroethylene
cellular
polyolefines
extruder
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
GB3002273A
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.)
Union Carbide Canada Ltd
Original Assignee
Union Carbide Canada 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
Application filed by Union Carbide Canada Ltd filed Critical Union Carbide Canada Ltd
Publication of GB1432419A publication Critical patent/GB1432419A/en
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
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
    • 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
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
    • 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
    • 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
    • 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
    • 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
    • C08J2427/00—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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Polymers & Plastics (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

1432419 Cellular polyolefines UNION CARBIDE CANADA Ltd 25 June 1973 [29 Sept 1972] 30022/73 Heading C3C Cellular polyolefines, e.g. polyethylene, are made by injecting a gas inert to the polyolefine, e.g. nitrogen, into a molten mass of a C 2 _ 4 olefine, which has been mixed with 0À01-0À20% by wt. of a finely divided polytetrafluoroethylene as a nucleating agent, the molten mass being maintained below the m.p. of the polytetrafluoroethylene, while continuing the mixing, and then cooling the mass. The polytetrafluoroethylene may be mixed with the polyolefine as an aqueous dispersion in an extruder, pelletized and then fed into an extruder where nitrogen is injected and the resultant cellular polyolefine is then extruded.
GB3002273A 1972-09-29 1973-06-25 Process for producing cellular polyolefin Expired GB1432419A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA152,854A CA977099A (en) 1972-09-29 1972-09-29 Process for producing cellular polyolefin

Publications (1)

Publication Number Publication Date
GB1432419A true GB1432419A (en) 1976-04-14

Family

ID=4094560

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3002273A Expired GB1432419A (en) 1972-09-29 1973-06-25 Process for producing cellular polyolefin

Country Status (4)

Country Link
CA (1) CA977099A (en)
DE (1) DE2347552A1 (en)
FR (1) FR2201315B1 (en)
GB (1) GB1432419A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0045064A2 (en) * 1980-07-25 1982-02-03 The Furukawa Electric Co., Ltd. Uniaxially drawn oriented polyolefin film for electric insulation and manufacturing method for the same

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU531473B2 (en) * 1977-12-16 1983-08-25 Sumitomo Electric Industries, Ltd. Foamed plastic insulated wire
US5034171A (en) * 1989-11-30 1991-07-23 Air Products And Chemicals, Inc. Process for extruding thermoplastic materials using low pressure inert gases as foaming agents

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1410006A (en) * 1963-12-03 1965-09-03 Union Carbide Canada Ltd New improved polyethylene and process for its manufacture
GB1143558A (en) * 1967-03-28

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0045064A2 (en) * 1980-07-25 1982-02-03 The Furukawa Electric Co., Ltd. Uniaxially drawn oriented polyolefin film for electric insulation and manufacturing method for the same
EP0045064A3 (en) * 1980-07-25 1982-02-10 The Furukawa Electric Co., Ltd. Uniaxially drawn oriented polyolefin film for electric insulation and manufacturing method for the same
US5006292A (en) * 1980-07-25 1991-04-09 The Furukawa Electric Co., Ltd. Manufacturing uniaxially drawn oriented polyolefin film for electric insulation

Also Published As

Publication number Publication date
FR2201315A1 (en) 1974-04-26
FR2201315B1 (en) 1976-04-09
DE2347552A1 (en) 1974-04-18
CA977099A (en) 1975-10-28

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19930624