GB578915A - Improvements in or relating to electric insulating materials - Google Patents

Improvements in or relating to electric insulating materials

Info

Publication number
GB578915A
GB578915A GB920642A GB920642A GB578915A GB 578915 A GB578915 A GB 578915A GB 920642 A GB920642 A GB 920642A GB 920642 A GB920642 A GB 920642A GB 578915 A GB578915 A GB 578915A
Authority
GB
United Kingdom
Prior art keywords
rubber
butadiene
polyisobutylene
polystyrene
polyethylene
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
GB920642A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB920642A priority Critical patent/GB578915A/en
Publication of GB578915A publication Critical patent/GB578915A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
    • H01B3/442—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from aromatic vinyl compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L21/00—Compositions of unspecified rubbers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Organic Insulating Materials (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Electric insulating material, particularly for insulated wire or cable, containing rubber and polystyrene, but not vulcanizing ingredients, is heated, without mechanical working such as milling, to at least 90 DEG C. for a time sufficient to cause substantial hardening of the material but insufficient to decompose it. The term "rubber" includes unvulcanized natural rubber, cyclised and synthetic rubber, as well as mixtures of these; and the term "synthetic rubber" includes polymers of butadiene or substituted butadiene, copolymers of butadiene and styrene, copolymers of an olefine and diolefine and linear substantially saturated hydrocarbon polymers, e.g. polyisobutylene. In examples, the treatment is described of compositions comprising polystyrene, crepe rubber, polyisobutylene and polyethylene alone, or paraffin wax together with (a) polyethylene, (b) talc or (c) zinc oxide. In another example, the processing of a mixture of a copolymer of butadiene and styrene, polystyrene, polyisobutylene, polyethylene and paraffin wax is described. Specification 577,943 is referred to.
GB920642A 1942-07-03 1942-07-03 Improvements in or relating to electric insulating materials Expired GB578915A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB920642A GB578915A (en) 1942-07-03 1942-07-03 Improvements in or relating to electric insulating materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB920642A GB578915A (en) 1942-07-03 1942-07-03 Improvements in or relating to electric insulating materials

Publications (1)

Publication Number Publication Date
GB578915A true GB578915A (en) 1946-07-17

Family

ID=9867460

Family Applications (1)

Application Number Title Priority Date Filing Date
GB920642A Expired GB578915A (en) 1942-07-03 1942-07-03 Improvements in or relating to electric insulating materials

Country Status (1)

Country Link
GB (1) GB578915A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2606163A (en) * 1949-01-05 1952-08-05 Dow Chemical Co Interpolymers of styrene with styrene-butadiene copolymers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2606163A (en) * 1949-01-05 1952-08-05 Dow Chemical Co Interpolymers of styrene with styrene-butadiene copolymers

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