GB1005119A - Foamed polystyrene - Google Patents

Foamed polystyrene

Info

Publication number
GB1005119A
GB1005119A GB38601/63A GB3860163A GB1005119A GB 1005119 A GB1005119 A GB 1005119A GB 38601/63 A GB38601/63 A GB 38601/63A GB 3860163 A GB3860163 A GB 3860163A GB 1005119 A GB1005119 A GB 1005119A
Authority
GB
United Kingdom
Prior art keywords
amide
weight
benzene
dinitrosoterephthalic
disulphohydrazide
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
GB38601/63A
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.)
Shell Internationale Research Maatschappij BV
Original Assignee
Shell Internationale Research Maatschappij BV
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 Shell Internationale Research Maatschappij BV filed Critical Shell Internationale Research Maatschappij BV
Publication of GB1005119A publication Critical patent/GB1005119A/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
    • 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
    • B29C44/507—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 an annular 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
    • C08J9/0095—Mixtures of at least two compounding ingredients belonging to different one-dot groups
    • 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
    • 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)
  • 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

An expandable composition comprises poly styrene, a volatile hydrocarbon, a quantity not exceeding 1% by weight of a nitrogenliberating, organic compound decomposing between 100 DEG and 200 DEG C., and an oxide or hydroxide of a metal of Group II or III of the Periodic System. Suitable organic nitrogen compounds are azodicarbonamide, azodiisobutyronitrile, benzene sulphohydrazide, benzene m-disulphohydrazide, diphenyl sulphone-3,31-disulphohydrazide, 4,41-oxybis-benzene sulphohydrazide, dinitroso pentamethylene tetramine, N,N1-dimethyl - N,N1 - dinitrosoterephthalic amide, N,N1 - diethyl - N,N1 - dinitrosoterephthalic amide, N,N1 - dimethyl - N,N1 - dinitrosophthalic amide, and N,N1-ethylene-dibenzamide. Preferred metal oxides or hydroxides are those of zinc, magnesium and aluminium with calcium oxide especially preferred, these compounds being used in quantities up to 1% by weight, and usually 0.1-0.6%. Specified hydrocarbons include butane, pentane, neopentane, hexane, cyclohexane and petroleum ether, used in quantities of 5-6% by weight. The composition may be extruded as a tube and blown up to between 3 and 10 times its original diameter while being stretched simultaneously in the longitudinal direction. Specification 783,034 is referred to.
GB38601/63A 1962-10-03 1963-10-01 Foamed polystyrene Expired GB1005119A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL283871 1962-10-03

Publications (1)

Publication Number Publication Date
GB1005119A true GB1005119A (en) 1965-09-22

Family

ID=19754153

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38601/63A Expired GB1005119A (en) 1962-10-03 1963-10-01 Foamed polystyrene

Country Status (3)

Country Link
BE (1) BE638083A (en)
GB (1) GB1005119A (en)
NL (1) NL283871A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3399098A (en) * 1963-10-17 1968-08-27 Nippon Kakoh Seishi Kk Method for production of foamed polyethylene

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3399098A (en) * 1963-10-17 1968-08-27 Nippon Kakoh Seishi Kk Method for production of foamed polyethylene

Also Published As

Publication number Publication date
NL283871A (en)
BE638083A (en)

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