GB1048999A - Thermoplastic resin foams - Google Patents

Thermoplastic resin foams

Info

Publication number
GB1048999A
GB1048999A GB43151/63A GB4315163A GB1048999A GB 1048999 A GB1048999 A GB 1048999A GB 43151/63 A GB43151/63 A GB 43151/63A GB 4315163 A GB4315163 A GB 4315163A GB 1048999 A GB1048999 A GB 1048999A
Authority
GB
United Kingdom
Prior art keywords
copolymers
thermoplastic resin
extruding
rate
blowing agent
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
GB43151/63A
Inventor
Nolan Davidson Boyer
Kenneth Wayne Otto
Yves Michel Trehu
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB1048999A publication Critical patent/GB1048999A/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
    • C08J9/04—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
    • C08J9/147—Halogen containing compounds containing carbon and halogen atoms only
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
    • B29C44/50—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying
    • B29C44/505—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying extruding the compound through a flat die
    • 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
    • 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
    • C08J9/06—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 chemical blowing agent

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)
  • General Chemical & Material Sciences (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

A process for producing foamed articles comprises mixing a blowing agent with molten thermoplastic resin and extruding the resultant solution from a superatmospheric pressure zone into an atmospheric pressure zone, the rate of extruding being at least as high as the rate at which the resin fractures when extruded without dissolved blowing agent. Suitable resins are polyethylene, polypropylene, polybutene, polystyrene, ethylene copolymers, styrene copolymers, polyhexamethylene adipamide, polycaprolactam, polymethylmethacrylate, methylmethacrylate copolymers, polyoxymethylene, polyvinyl chloride, polyvinylidene chloride, polychlorotrifluoroethylene, copolymers of tetrafluoroethylene and hexafluoropropylene, polycarbonate resins and cellulose resins.
GB43151/63A 1963-11-05 1963-11-01 Thermoplastic resin foams Expired GB1048999A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP0032921 1963-11-05

Publications (1)

Publication Number Publication Date
GB1048999A true GB1048999A (en) 1966-11-23

Family

ID=7372980

Family Applications (1)

Application Number Title Priority Date Filing Date
GB43151/63A Expired GB1048999A (en) 1963-11-05 1963-11-01 Thermoplastic resin foams

Country Status (4)

Country Link
BE (1) BE639972A (en)
DE (1) DE1569257B2 (en)
GB (1) GB1048999A (en)
NL (1) NL300591A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1778630B1 (en) * 1967-05-26 1974-03-28 Ugine Kuhlmann PROCESS FOR MANUFACTURING UNPLACED POLYMERS OR COPOLYMERIC FOAMS
GB2143237A (en) * 1983-07-12 1985-02-06 Raychem Corp Electrically insulating foamed polymers
DE19740058C2 (en) * 1997-09-12 2001-10-31 Mannesmann Vdo Ag Process for the manufacture of a float, fuel-resistant float and use of particles pressed together and produced by extrusion
EP3162531A1 (en) * 2015-10-30 2017-05-03 Technoform Tailored Solutions Holding GmbH Method for manufacturing foamed profiles and foamed profiles obtainable by the method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2929829A1 (en) * 1979-07-23 1981-02-26 Basf Ag Quickly dissolving foamed lacquer resin prepn. - by extruding lacquer resin melt contg. distributed inert gas into lower pressure zone
JPS57109834A (en) * 1980-12-27 1982-07-08 Sekisui Plastics Co Ltd Foamed polystyrene sheet

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1778630B1 (en) * 1967-05-26 1974-03-28 Ugine Kuhlmann PROCESS FOR MANUFACTURING UNPLACED POLYMERS OR COPOLYMERIC FOAMS
GB2143237A (en) * 1983-07-12 1985-02-06 Raychem Corp Electrically insulating foamed polymers
DE19740058C2 (en) * 1997-09-12 2001-10-31 Mannesmann Vdo Ag Process for the manufacture of a float, fuel-resistant float and use of particles pressed together and produced by extrusion
EP3162531A1 (en) * 2015-10-30 2017-05-03 Technoform Tailored Solutions Holding GmbH Method for manufacturing foamed profiles and foamed profiles obtainable by the method

Also Published As

Publication number Publication date
BE639972A (en)
NL300591A (en)
DE1569257A1 (en) 1969-04-10
DE1569257B2 (en) 1972-09-07

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