GB783034A - Improvements in or relating to foamed polystyrene - Google Patents

Improvements in or relating to foamed polystyrene

Info

Publication number
GB783034A
GB783034A GB29716/55A GB2971655A GB783034A GB 783034 A GB783034 A GB 783034A GB 29716/55 A GB29716/55 A GB 29716/55A GB 2971655 A GB2971655 A GB 2971655A GB 783034 A GB783034 A GB 783034A
Authority
GB
United Kingdom
Prior art keywords
carbon dioxide
polystyrene
aliphatic hydrocarbon
per cent
products
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
GB29716/55A
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.)
Beazer East Inc
Original Assignee
Koppers Co 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 Koppers Co Inc filed Critical Koppers Co Inc
Publication of GB783034A publication Critical patent/GB783034A/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
    • C08J9/0066—Use of inorganic compounding ingredients
    • 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
    • C08J2325/00—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 an aromatic carbocyclic ring; Derivatives of such polymers
    • C08J2325/02—Homopolymers or copolymers of hydrocarbons
    • C08J2325/04—Homopolymers or copolymers of styrene
    • C08J2325/06—Polystyrene

Landscapes

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

Abstract

Foamed polystyrene is prepared by extruding at 280 DEG to 450 DEG F a composition of polystyrene particles with four and a half to nine per cent of an aliphatic hydrocarbon of boiling range 30-90 DEG C., homogeneously admixed with a carbon dioxide-liberating agent and an organic acid having at least 3.0 milli-equivalents of acidic hydrogen per gram, an acid salt or boric acid in an amount to produce upon reaction a total of from one-tenth to five per cent, based on the polystyrene particles containing the aliphatic hydrocarbon, of water and carbon dioxide. The polystyrene may be of the high impact type, i.e. containing elastomers. The hydrocarbon may be petroleum ether, particularly the pentane and/or hexane fractions. A number of acids is listed. The carbon dioxide-liberating agent may be a carbonate or bicarbonate of an alkaline earth metal. The products may have a density of up to 20 lbs. per cubic foot. Flame-retardant products may be produced by addition of highly halogenated non-volatile hydrocarbons and antimony trioxide. Specification 777,384 is referred to.
GB29716/55A 1954-11-16 1955-10-18 Improvements in or relating to foamed polystyrene Expired GB783034A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US783034XA 1954-11-16 1954-11-16

Publications (1)

Publication Number Publication Date
GB783034A true GB783034A (en) 1957-09-18

Family

ID=22143173

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29716/55A Expired GB783034A (en) 1954-11-16 1955-10-18 Improvements in or relating to foamed polystyrene

Country Status (1)

Country Link
GB (1) GB783034A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0041380A1 (en) * 1980-05-29 1981-12-09 Sekisui Kagaku Kogyo Kabushiki Kaisha Process for producing polyethylene foams

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0041380A1 (en) * 1980-05-29 1981-12-09 Sekisui Kagaku Kogyo Kabushiki Kaisha Process for producing polyethylene foams

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