GB2014153A - Foamed ethylene copolymer articles - Google Patents

Foamed ethylene copolymer articles

Info

Publication number
GB2014153A
GB2014153A GB7900164A GB7900164A GB2014153A GB 2014153 A GB2014153 A GB 2014153A GB 7900164 A GB7900164 A GB 7900164A GB 7900164 A GB7900164 A GB 7900164A GB 2014153 A GB2014153 A GB 2014153A
Authority
GB
United Kingdom
Prior art keywords
cross
ethylene copolymer
cells
weight
articles
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.)
Withdrawn
Application number
GB7900164A
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB7900164A priority Critical patent/GB2014153A/en
Publication of GB2014153A publication Critical patent/GB2014153A/en
Withdrawn legal-status Critical Current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
    • C08J9/04—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
    • 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
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/08—Copolymers of ethene

Abstract

Articles having a closed cellular foam structure are made from an ethylene copolymer having up to 45% by weight of comonomer and which contains 0.2 to 6% by weight of a cross-linking agent. The article is made by (a) moulding a cross-linkable composition comprising the copolymer, which is then (b) cross-linked and (c) removed from the mould. A physical foaming agent, e.g. CO2 or nitrogen, is diffused at high pressure into the cross linked preform and then this pressure is removed. This expands the foaming agent to produce the closed-cellular foam. The final article has bulk density 0.01 to 0.5 g/cm<3>. Preferably 95% of the cells have a diameter below 0.8 mm with most cells having diameters of 0.01 to 0.1 mm. Preferred copolymers include vinyl acetate and methyl ethyl or butyl esters of acrylic and methacrylic acids.
GB7900164A 1977-11-01 1979-01-03 Foamed ethylene copolymer articles Withdrawn GB2014153A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7900164A GB2014153A (en) 1977-11-01 1979-01-03 Foamed ethylene copolymer articles

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4539477 1977-11-01
GB7900164A GB2014153A (en) 1977-11-01 1979-01-03 Foamed ethylene copolymer articles

Publications (1)

Publication Number Publication Date
GB2014153A true GB2014153A (en) 1979-08-22

Family

ID=26265584

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7900164A Withdrawn GB2014153A (en) 1977-11-01 1979-01-03 Foamed ethylene copolymer articles

Country Status (1)

Country Link
GB (1) GB2014153A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4391923A (en) 1982-09-27 1983-07-05 E. I. Du Pont De Nemours & Co. Low density closed-cell foamed articles from ethylene copolymer/vinyl or vinylidene halide blends
US4394459A (en) 1981-09-18 1983-07-19 E. I. Du Pont De Nemours & Co. Fast-curing foamable composition based on ethylene terpolymers
US4434253A (en) 1982-09-27 1984-02-28 E. I. Du Pont De Nemours And Company Low density closed-cell foamed articles from ethylene copolymer/vinyl or vinylidene halide blends
EP0113903A2 (en) * 1982-12-20 1984-07-25 Japan Styrene Paper Corporation Process for producing prefoamed polymer particles
WO2015177571A1 (en) 2014-05-23 2015-11-26 Zotefoams Plc Method for producing three dimensional foam articles
EP2590797B1 (en) * 2010-07-06 2017-12-06 Rehau AG & Co Cabinet roll-fronts

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4394459A (en) 1981-09-18 1983-07-19 E. I. Du Pont De Nemours & Co. Fast-curing foamable composition based on ethylene terpolymers
US4391923A (en) 1982-09-27 1983-07-05 E. I. Du Pont De Nemours & Co. Low density closed-cell foamed articles from ethylene copolymer/vinyl or vinylidene halide blends
US4434253A (en) 1982-09-27 1984-02-28 E. I. Du Pont De Nemours And Company Low density closed-cell foamed articles from ethylene copolymer/vinyl or vinylidene halide blends
EP0113903A2 (en) * 1982-12-20 1984-07-25 Japan Styrene Paper Corporation Process for producing prefoamed polymer particles
EP0113903A3 (en) * 1982-12-20 1985-06-19 Japan Styrene Paper Corporation Process for producing prefoamed polymer particles
EP2590797B1 (en) * 2010-07-06 2017-12-06 Rehau AG & Co Cabinet roll-fronts
WO2015177571A1 (en) 2014-05-23 2015-11-26 Zotefoams Plc Method for producing three dimensional foam articles
US10675792B2 (en) 2014-05-23 2020-06-09 Zotefoams Plc Method for producing three dimensional foam articles

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)