GB800815A - Electrical insulating materials composed of high molecular weight polycarbonates - Google Patents

Electrical insulating materials composed of high molecular weight polycarbonates

Info

Publication number
GB800815A
GB800815A GB16504/55A GB1650455A GB800815A GB 800815 A GB800815 A GB 800815A GB 16504/55 A GB16504/55 A GB 16504/55A GB 1650455 A GB1650455 A GB 1650455A GB 800815 A GB800815 A GB 800815A
Authority
GB
United Kingdom
Prior art keywords
dihydroxy compounds
electrical
polycarbonates
cycloaliphatic
molecular weight
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
GB16504/55A
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.)
Bayer AG
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Publication of GB800815A publication Critical patent/GB800815A/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
    • C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
    • 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
    • H01B3/42—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 polyesters; polyethers; polyacetals
    • H01B3/421—Polyesters
    • H01B3/426—Polycarbonates

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)
  • Compositions Of Macromolecular Compounds (AREA)
  • Laminated Bodies (AREA)
  • Organic Insulating Materials (AREA)

Abstract

High molecular weight polycarbonates produced from one or more aromatic dihydroxy compounds alone or in admixture with one or more saturated aliphatic or cycloaliphatic dihydroxy compounds are used as electrical insulating materials. The polycarbonates may contain fillers (e.g. kaolin, talcum, glass or mica), plasticizers (e.g. esters of phthalic or phosphoric acid) or pigments. The Specification lists many examples of aromatic dihydroxy compounds (especially di-(monohydroxyaryl)-alkanes) and aliphatic or cycloaliphatic dihydroxy compounds (including alkylene, oxy-or thio-alkylene, aromatic and cycloaliphatic glycols). The polycarbonates may be (a) moulded into blocks into which conductors, condensers and valves may be inserted; (h) made into films or fibres to be used for winding or covering electrical conductors; (c) made into films to be used as dielectrics in electrical condensers; (d) coated on to electrical conductors directly from a solution or melt; or (e) used to impregnate paper, woven materials, glass fibres or glass mats to be used as insulating material. The electrical properties are improved by heating the polycarbonate below its melting point. Specification 772,627 is referred to.
GB16504/55A 1954-07-01 1955-06-08 Electrical insulating materials composed of high molecular weight polycarbonates Expired GB800815A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE800815X 1954-07-01
DE337246X 1954-07-01
DE1137335X 1954-07-01
DE85762X 1954-07-01

Publications (1)

Publication Number Publication Date
GB800815A true GB800815A (en) 1958-09-03

Family

ID=74068198

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16504/55A Expired GB800815A (en) 1954-07-01 1955-06-08 Electrical insulating materials composed of high molecular weight polycarbonates

Country Status (5)

Country Link
JP (1) JPS378679B1 (en)
CH (1) CH337246A (en)
DK (1) DK85762C (en)
FR (1) FR1137335A (en)
GB (1) GB800815A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1210985B (en) * 1959-03-10 1966-02-17 Norddeutsche Kabelwerke Ag Method for producing an electrical insulating material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1210985B (en) * 1959-03-10 1966-02-17 Norddeutsche Kabelwerke Ag Method for producing an electrical insulating material

Also Published As

Publication number Publication date
DK85762C (en) 1958-06-23
FR1137335A (en) 1957-05-27
JPS378679B1 (en) 1962-07-19
CH337246A (en) 1959-03-31

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