FR2266589A1 - High density thermoplastic foam sheet - from compsn. contg. micronised talc as nucleating agent and (halogenated) hydrocarbon blowing agent - Google Patents

High density thermoplastic foam sheet - from compsn. contg. micronised talc as nucleating agent and (halogenated) hydrocarbon blowing agent

Info

Publication number
FR2266589A1
FR2266589A1 FR7412190A FR7412190A FR2266589A1 FR 2266589 A1 FR2266589 A1 FR 2266589A1 FR 7412190 A FR7412190 A FR 7412190A FR 7412190 A FR7412190 A FR 7412190A FR 2266589 A1 FR2266589 A1 FR 2266589A1
Authority
FR
France
Prior art keywords
blowing agent
talc
compsn
contg
halogenated
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
FR7412190A
Other languages
French (fr)
Other versions
FR2266589B1 (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.)
Orkem SA
Original Assignee
Chimique des Charbonnages SA
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 Chimique des Charbonnages SA filed Critical Chimique des Charbonnages SA
Priority to FR7412190A priority Critical patent/FR2266589A1/en
Publication of FR2266589A1 publication Critical patent/FR2266589A1/en
Application granted granted Critical
Publication of FR2266589B1 publication Critical patent/FR2266589B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • B29C44/3442—Mixing, kneading or conveying the foamable material
    • 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
    • C08J9/0066—Use of inorganic compounding ingredients
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/22—Expanded, porous or hollow particles
    • C08K7/24—Expanded, porous or hollow particles inorganic
    • C08K7/26—Silicon- containing compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles

Landscapes

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

Abstract

Thermoplastic cellular sheets are produced by conventional extrusion through a cylindrical die using >=2% micronised talc as nucleating agent and 0.5-1 5% low boiling (fluorochlorinated or chlorinated) hydrocarbon or an inert gas as blowing agent. The sheets have higher density than obtd. with the 'Direct Gasing' method, even when using a low content of blowing agent. The amt. of talc is pref. >=5% and particle size of the talc is 0.25-50 mu, pref. 5 mu. The blowing agent is pref. fluorochloro-methane and the thermoplastic is pref. polystyrene in powder or bead form.
FR7412190A 1974-04-05 1974-04-05 High density thermoplastic foam sheet - from compsn. contg. micronised talc as nucleating agent and (halogenated) hydrocarbon blowing agent Granted FR2266589A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7412190A FR2266589A1 (en) 1974-04-05 1974-04-05 High density thermoplastic foam sheet - from compsn. contg. micronised talc as nucleating agent and (halogenated) hydrocarbon blowing agent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7412190A FR2266589A1 (en) 1974-04-05 1974-04-05 High density thermoplastic foam sheet - from compsn. contg. micronised talc as nucleating agent and (halogenated) hydrocarbon blowing agent

Publications (2)

Publication Number Publication Date
FR2266589A1 true FR2266589A1 (en) 1975-10-31
FR2266589B1 FR2266589B1 (en) 1976-10-08

Family

ID=9137367

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7412190A Granted FR2266589A1 (en) 1974-04-05 1974-04-05 High density thermoplastic foam sheet - from compsn. contg. micronised talc as nucleating agent and (halogenated) hydrocarbon blowing agent

Country Status (1)

Country Link
FR (1) FR2266589A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2396041A1 (en) * 1977-06-30 1979-01-26 Haut Rhin Manufacture Machines Foamed flame-proofed polystyrene extrudate, e.g. packaging foil - contains aluminium hydroxide and inorganic lubricant, e.g. talcum
EP0055437A2 (en) * 1980-12-27 1982-07-07 Sekisui Kaseihin Kogyo Kabushiki Kaisha A continuous process for the production of polystyrene foamed articles

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2396041A1 (en) * 1977-06-30 1979-01-26 Haut Rhin Manufacture Machines Foamed flame-proofed polystyrene extrudate, e.g. packaging foil - contains aluminium hydroxide and inorganic lubricant, e.g. talcum
EP0055437A2 (en) * 1980-12-27 1982-07-07 Sekisui Kaseihin Kogyo Kabushiki Kaisha A continuous process for the production of polystyrene foamed articles
EP0055437A3 (en) * 1980-12-27 1984-07-25 Sekisui Kaseihin Kogyo Kabushiki Kaisha A continuous process for the production of polystyrene foamed articles

Also Published As

Publication number Publication date
FR2266589B1 (en) 1976-10-08

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Legal Events

Date Code Title Description
ST Notification of lapse