GB1089562A - Improvements relating to foamed polyvinyl aromatic resin products - Google Patents

Improvements relating to foamed polyvinyl aromatic resin products

Info

Publication number
GB1089562A
GB1089562A GB22745/64A GB2274564A GB1089562A GB 1089562 A GB1089562 A GB 1089562A GB 22745/64 A GB22745/64 A GB 22745/64A GB 2274564 A GB2274564 A GB 2274564A GB 1089562 A GB1089562 A GB 1089562A
Authority
GB
United Kingdom
Prior art keywords
resin
surface skin
extrusion
zone
aromatic resin
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
GB22745/64A
Inventor
John Harold Gilbert
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.)
Monsanto Chemicals Ltd
Original Assignee
Monsanto Chemicals 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 Monsanto Chemicals Ltd filed Critical Monsanto Chemicals Ltd
Priority to SE6985/65A priority Critical patent/SE313180B/xx
Priority to DE1569185A priority patent/DE1569185B2/en
Priority to US460215A priority patent/US3431164A/en
Publication of GB1089562A publication Critical patent/GB1089562A/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
    • C08J9/34—Chemical features in the manufacture of articles consisting of a foamed macromolecular core and a macromolecular surface layer having a higher density than the core
    • 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
    • C08J9/22—After-treatment of expandable particles; Forming foamed products
    • 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
    • B29L2007/00—Flat articles, e.g. films or sheets
    • 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

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

Abstract

An extruded foamed product of polyvinyl-aromatic resin comprises a mass of substantially parallel elongated cells enclosed by a surface skin, the cells being orientated substantially at right-angles to the surface skin. The preferred resin is polystyrene. The surface skin is normally orientated in the direction of extrusion, is of a fibrous nature and is peelable from the rest of the poduct. The blowing agent is a normally gaseous substance or a volatile liquid. Preferred blowing agents are C1-C5 aliphatic hydrocarbons, e.g. a butane. The foamable composition preferably contains a nucleating agent, e.g. finely divided silica. The product may be produced by extruding a foamable polyvinylaromatic resin composition through a die orifice into a zone of lower pressure defined by stationary surfaces that are cooled so as to solidify the resin in contact with them and are spaced progressively further apart from each other along the direction of extrusion such that foaming of the resin occurs as it moves through the zone.
GB22745/64A 1964-06-02 1964-06-02 Improvements relating to foamed polyvinyl aromatic resin products Expired GB1089562A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE6985/65A SE313180B (en) 1964-06-02 1965-05-26
DE1569185A DE1569185B2 (en) 1964-06-02 1965-06-01 Process for the continuous production of a plate or pipe profile from a foamable thermoplastic resin
US460215A US3431164A (en) 1964-06-02 1965-06-01 Foamed polyvinylaromatic resin products having elongated cells at right angles to a surface skin and their manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE680955 1966-05-12

Publications (1)

Publication Number Publication Date
GB1089562A true GB1089562A (en) 1967-11-01

Family

ID=3848725

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22745/64A Expired GB1089562A (en) 1964-06-02 1964-06-02 Improvements relating to foamed polyvinyl aromatic resin products

Country Status (2)

Country Link
BE (1) BE680955A (en)
GB (1) GB1089562A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102762643A (en) * 2009-12-18 2012-10-31 旭化成建材株式会社 Phenolic resin foamed plate and method for producing same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102762643A (en) * 2009-12-18 2012-10-31 旭化成建材株式会社 Phenolic resin foamed plate and method for producing same

Also Published As

Publication number Publication date
BE680955A (en) 1966-11-14

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