GB708903A - Improvements in or relating to gramophone records - Google Patents

Improvements in or relating to gramophone records

Info

Publication number
GB708903A
GB708903A GB1672050A GB1672050A GB708903A GB 708903 A GB708903 A GB 708903A GB 1672050 A GB1672050 A GB 1672050A GB 1672050 A GB1672050 A GB 1672050A GB 708903 A GB708903 A GB 708903A
Authority
GB
United Kingdom
Prior art keywords
relating
gramophone records
polyvinyl
plasticizer
stabilizer
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
GB1672050A
Inventor
William Edward Lord
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries 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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB1672050A priority Critical patent/GB708903A/en
Publication of GB708903A publication Critical patent/GB708903A/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
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/20—Compounding polymers with additives, e.g. colouring
    • C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
    • C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
    • 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
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2427/00—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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

A composition suitable for making gramophone record blanks is made by mixing on heated rollers amorphous carbon, e.g. acetylene black, with a polyvinyl acetal resin and incorporating the mix in a thermoplastic synthetic resinous material together with, if desired, a plasticizer, e.g. dioctyl phthalate and a stabilizer, e.g. lead stearate. Synthetic resins mentioned are polyvinyl chloroacetate and copolymers of vinyl chloride and vinylidene chloride. Specification 627,836 is referred to.
GB1672050A 1950-07-05 1950-07-05 Improvements in or relating to gramophone records Expired GB708903A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1672050A GB708903A (en) 1950-07-05 1950-07-05 Improvements in or relating to gramophone records

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1672050A GB708903A (en) 1950-07-05 1950-07-05 Improvements in or relating to gramophone records

Publications (1)

Publication Number Publication Date
GB708903A true GB708903A (en) 1954-05-12

Family

ID=10082434

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1672050A Expired GB708903A (en) 1950-07-05 1950-07-05 Improvements in or relating to gramophone records

Country Status (1)

Country Link
GB (1) GB708903A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2007200735B1 (en) * 2007-02-20 2008-08-28 Peter Lee Automatic winder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2007200735B1 (en) * 2007-02-20 2008-08-28 Peter Lee Automatic winder

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