GB692429A - Process for dimensionally stabilizing oriented films of crystalline vinylidene chloride-vinyl chloride copolymers - Google Patents

Process for dimensionally stabilizing oriented films of crystalline vinylidene chloride-vinyl chloride copolymers

Info

Publication number
GB692429A
GB692429A GB927250A GB927250A GB692429A GB 692429 A GB692429 A GB 692429A GB 927250 A GB927250 A GB 927250A GB 927250 A GB927250 A GB 927250A GB 692429 A GB692429 A GB 692429A
Authority
GB
United Kingdom
Prior art keywords
per cent
film
vinyl chloride
vinylidene chloride
oven
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
GB927250A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB927250A priority Critical patent/GB692429A/en
Priority to FR1018034D priority patent/FR1018034A/en
Publication of GB692429A publication Critical patent/GB692429A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions 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; Compositions of derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions 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; Compositions of derivatives of such polymers
    • C08L27/02—Compositions 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; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/04—Compositions 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; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08L27/08—Homopolymers or copolymers of vinylidene chloride

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)

Abstract

Oriented films of crystalline vinylidene chloride-vinyl chloride copolymers, in which the crystallites are oriented with their major axes parallel with the surfaces of the films, are dimensionally stabilized by heating them to a temperature between 125 DEG and 10 DEG C. below the softening point of the copolymer for 10-150 seconds while so securing the film as to permit 10-70 and preferably 30-50 per cent of the linear shrinkage in the direction of longitudinal and /or transverse restraint which the film would exhibit without restraint, cooling the film to at least 100 DEG C. under sufficient tension to prevent further shrinkage, and finally releasing the film. The invention is particularly applicable to plasticized films containing (apart from plasticizer) about 88-93 per cent of vinylidene chloride and 7-12 per cent of vinyl chloride. In an example a cut sheet of a film composed of a vinylidene chloride vinyl chloride copolymer plasticized with 7 per cent of its weight of di-(alpha-phenyl-ethyl) ether and having a softening point of 168 DEG C. is heated for 20 seconds in an oven at 140 DEG C. while fastened in a frame permitting 50 per cent of the normal linear and transverse shrinkage to occur and is removed from the oven and cooled to room temperature while still in the frame. The treated film shrinks less than 2 per cent when hung in an oven at 100 DEG C. for 30 minutes. Specification 692,430 is referred to.
GB927250A 1950-04-14 1950-04-14 Process for dimensionally stabilizing oriented films of crystalline vinylidene chloride-vinyl chloride copolymers Expired GB692429A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB927250A GB692429A (en) 1950-04-14 1950-04-14 Process for dimensionally stabilizing oriented films of crystalline vinylidene chloride-vinyl chloride copolymers
FR1018034D FR1018034A (en) 1950-04-14 1950-04-18 Improvements in a dandruff treatment process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB927250A GB692429A (en) 1950-04-14 1950-04-14 Process for dimensionally stabilizing oriented films of crystalline vinylidene chloride-vinyl chloride copolymers

Publications (1)

Publication Number Publication Date
GB692429A true GB692429A (en) 1953-06-03

Family

ID=9868773

Family Applications (1)

Application Number Title Priority Date Filing Date
GB927250A Expired GB692429A (en) 1950-04-14 1950-04-14 Process for dimensionally stabilizing oriented films of crystalline vinylidene chloride-vinyl chloride copolymers

Country Status (2)

Country Link
FR (1) FR1018034A (en)
GB (1) GB692429A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1226915B (en) * 1955-10-29 1966-10-13 Kalle Ag Process for increasing the adhesive strength of layers of other substances on films made of high molecular weight polyalkylene terephthalates

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1226915B (en) * 1955-10-29 1966-10-13 Kalle Ag Process for increasing the adhesive strength of layers of other substances on films made of high molecular weight polyalkylene terephthalates

Also Published As

Publication number Publication date
FR1018034A (en) 1952-12-24

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