GB1408741A - Process for extruding a foamed closed-cell polyolefin extrudate substantially free from cell collapse by use of a barrier material - Google Patents

Process for extruding a foamed closed-cell polyolefin extrudate substantially free from cell collapse by use of a barrier material

Info

Publication number
GB1408741A
GB1408741A GB118574A GB118574A GB1408741A GB 1408741 A GB1408741 A GB 1408741A GB 118574 A GB118574 A GB 118574A GB 118574 A GB118574 A GB 118574A GB 1408741 A GB1408741 A GB 1408741A
Authority
GB
United Kingdom
Prior art keywords
cell
polyolefine
extruding
barrier material
mixture
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
GB118574A
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.)
Polytech Systems Inc
Original Assignee
Polytech Systems 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
Application filed by Polytech Systems Inc filed Critical Polytech Systems Inc
Priority to GB118574A priority Critical patent/GB1408741A/en
Publication of GB1408741A publication Critical patent/GB1408741A/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
    • C08J9/14—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 organic
    • C08J9/143—Halogen containing compounds
    • 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
    • C08J2457/00—Characterised by the use of unspecified polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

1408741 Closed cell polyolefine foams POLYTECH SYSTEMS Inc 10 Jan 1974 01185/74 Heading C3C [Also in Division B5] A closed cell polyolefine foam article, e.g. a rod, is made by extruding a mixture of molten polyolefine resin, a particulate nucleating agent, at least one fluorocarbon expanding agent and 1-20% by wt., based on the resin, of an acrylic resin and/or impact polystyrene which acts as a barrier material for blocking gas migration through the cell walls as the foam is being generated. The polyolefine may be polyethylene. The expanding agent may be a mixture of dichlorodifluoromethane and monochlorodifluoromethane. The acrylic resin may be an acrylic resin. The extruded mixture may contain an ionomer, zinc stearate, calcium silicate (as nucleating agent) and naphtha.
GB118574A 1974-01-10 1974-01-10 Process for extruding a foamed closed-cell polyolefin extrudate substantially free from cell collapse by use of a barrier material Expired GB1408741A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB118574A GB1408741A (en) 1974-01-10 1974-01-10 Process for extruding a foamed closed-cell polyolefin extrudate substantially free from cell collapse by use of a barrier material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB118574A GB1408741A (en) 1974-01-10 1974-01-10 Process for extruding a foamed closed-cell polyolefin extrudate substantially free from cell collapse by use of a barrier material

Publications (1)

Publication Number Publication Date
GB1408741A true GB1408741A (en) 1975-10-01

Family

ID=9717653

Family Applications (1)

Application Number Title Priority Date Filing Date
GB118574A Expired GB1408741A (en) 1974-01-10 1974-01-10 Process for extruding a foamed closed-cell polyolefin extrudate substantially free from cell collapse by use of a barrier material

Country Status (1)

Country Link
GB (1) GB1408741A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4251584A (en) * 1977-10-31 1981-02-17 Hoechst Aktiengesellschaft Foamed polyolefin film or sheet product
EP0055460A1 (en) * 1980-12-23 1982-07-07 The Dow Chemical Company Blended polyethylene-polystyrene compositions suitable for preparation of closed cell foam products

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4251584A (en) * 1977-10-31 1981-02-17 Hoechst Aktiengesellschaft Foamed polyolefin film or sheet product
EP0055460A1 (en) * 1980-12-23 1982-07-07 The Dow Chemical Company Blended polyethylene-polystyrene compositions suitable for preparation of closed cell foam products

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee