GB370741A - Improvements in and relating to electrical conductors - Google Patents

Improvements in and relating to electrical conductors

Info

Publication number
GB370741A
GB370741A GB17720/31A GB1772031A GB370741A GB 370741 A GB370741 A GB 370741A GB 17720/31 A GB17720/31 A GB 17720/31A GB 1772031 A GB1772031 A GB 1772031A GB 370741 A GB370741 A GB 370741A
Authority
GB
United Kingdom
Prior art keywords
composition
olefine
sulphur
polysulphide compound
relating
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
GB17720/31A
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
Publication of GB370741A publication Critical patent/GB370741A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/2806Protection against damage caused by corrosion

Landscapes

  • Compositions Of Macromolecular Compounds (AREA)

Abstract

A plastic composition for insulating electric cables comprises an olefine polysulphide compound formed by the reaction of soluble polysulphides with methylene bodies, such as olefine dihalides or formaldehydes, preferably in the presence of dispersing agents such as precipitated magnesium hydroxide, as described in Specifications 302,270, [Class 70, Indiarubber &c.], and 359,000. To facilitate working of the composition, softening agents such as crude rubber, fatty acids, soaps and phenol-sulphur compounds, as well as "sulphur carriers" such as zinc oxide and litharge, may be incorporated in the olefine polysulphide compound. The composition may also include fillers, such as whiting, carbon black, magnesium oxide or carbonate and waxes, together with accelerators and antioxidants, such as diphenylguanidine hexamethylenetetramine and betanaphthylamine. The composition may be annealed, either before or after application to the cable, at a temperature of 200-300 DEG F., preferably 287 DEG F., for a period of 40-60 minutes.
GB17720/31A 1930-07-14 1931-06-18 Improvements in and relating to electrical conductors Expired GB370741A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US370741XA 1930-07-14 1930-07-14

Publications (1)

Publication Number Publication Date
GB370741A true GB370741A (en) 1932-04-14

Family

ID=21892298

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17720/31A Expired GB370741A (en) 1930-07-14 1931-06-18 Improvements in and relating to electrical conductors

Country Status (1)

Country Link
GB (1) GB370741A (en)

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