GB954028A - A process for the stabilisation of polyvinyl chloride foam materials having closed cells - Google Patents

A process for the stabilisation of polyvinyl chloride foam materials having closed cells

Info

Publication number
GB954028A
GB954028A GB2616960A GB2616960A GB954028A GB 954028 A GB954028 A GB 954028A GB 2616960 A GB2616960 A GB 2616960A GB 2616960 A GB2616960 A GB 2616960A GB 954028 A GB954028 A GB 954028A
Authority
GB
United Kingdom
Prior art keywords
polyvinyl chloride
chloride foam
days
foam materials
closed cells
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
GB2616960A
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.)
Lonza Electric and Chemical Works Ltd
Original Assignee
Lonza Electric and Chemical Works 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 Lonza Electric and Chemical Works Ltd filed Critical Lonza Electric and Chemical Works Ltd
Publication of GB954028A publication Critical patent/GB954028A/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
    • C08J9/36—After-treatment
    • 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
    • C08J2327/00—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 a halogen; Derivatives of such polymers
    • C08J2327/02—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 a halogen; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2327/04—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 a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08J2327/06—Homopolymers or copolymers of vinyl chloride

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)

Abstract

Completely expanded polyvinyl chloride foam materials having closed cells and containing not more than 10% by weight of volatile plasticizer are stablized by maintaining them at 35 DEG to 105 DEG C. for at least 24 hours. The heat treatment may be repeated at intervals with cooling in between. In examples (1) a sheet of polyvinyl chloride foam containing 35% dioctyl phthalate was maintained at 50 DEG C. for 5 days (2) a sheet of polyvinyl chloride foam with no plastizer was heated at 60 DEG C., for 4 days (3) a test element with 45% plasticer was heated 3 times at 50 DEG C., for 2 days each time. Foam materials containing more than 10% of volatile solvent, (e.g. acetone or methyl ethyl ketone) must have their solvent content reduced by heating at low temperature, e.g. 25-30 DEG C., with ventilation before being treated according to the invention. The products have substantially constant volume even when subjected to strong fluctuations in temperature and are particularly suitable for buoyancy articles, e.g. life belts and life jackets.
GB2616960A 1959-07-30 1960-07-27 A process for the stabilisation of polyvinyl chloride foam materials having closed cells Expired GB954028A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH7639559A CH370915A (en) 1959-07-30 1959-07-30 Process for stabilizing foams

Publications (1)

Publication Number Publication Date
GB954028A true GB954028A (en) 1964-04-02

Family

ID=4534884

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2616960A Expired GB954028A (en) 1959-07-30 1960-07-27 A process for the stabilisation of polyvinyl chloride foam materials having closed cells

Country Status (3)

Country Link
CH (1) CH370915A (en)
ES (1) ES260008A1 (en)
GB (1) GB954028A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001029120A1 (en) * 1999-10-19 2001-04-26 Otto Bock Schaumstoffwerke Gmbh & Co. Kg Method for reducing emissions in materials open to diffusion

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001029120A1 (en) * 1999-10-19 2001-04-26 Otto Bock Schaumstoffwerke Gmbh & Co. Kg Method for reducing emissions in materials open to diffusion

Also Published As

Publication number Publication date
ES260008A1 (en) 1960-12-01
CH370915A (en) 1963-07-31

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