GB616687A - Improvements in and relating to insulated electrical conductors - Google Patents

Improvements in and relating to insulated electrical conductors

Info

Publication number
GB616687A
GB616687A GB28536/46A GB2853646A GB616687A GB 616687 A GB616687 A GB 616687A GB 28536/46 A GB28536/46 A GB 28536/46A GB 2853646 A GB2853646 A GB 2853646A GB 616687 A GB616687 A GB 616687A
Authority
GB
United Kingdom
Prior art keywords
butyl rubber
formula
zinc oxide
stearic acid
sulphur
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
GB28536/46A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB616687A publication Critical patent/GB616687A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/08—Cable junctions
    • H02G15/18—Cable junctions protected by sleeves, e.g. for communication cable
    • H02G15/196—Cable junctions protected by sleeves, e.g. for communication cable having lapped insulation

Abstract

An adhesive synthetic rubber insulating tape for repairing the cured natural or synthetic rubber covering of an electric cable consists of a solid interpolymer having a major proportion of an iso-olefine and a minor proportion of a diolefine (e.g. Butyl rubber). The following formulae are given. .Formula A.Parts by weight .Butyl Rubber.55.5 .Diatomaceous Earth.32.0 .Mineral Oil Plasticizer.2.5 .Paraffin.2.5 .Zinc Oxide.2.0 .Stearic Acid.2.0 .Sulphur.2.0 .Selenium diethyldithiocarbamate.1.0 .2-mercaptothiazoline.0.5 This formula may be varied as desired for example by omission of the curing agents. Formula B.Parts by weight .Butyl Rubber.40.0 .Zinc Oxide.2.0 .Stearic Acid.1.5 .Clay.43.75 .Mineral Oil Plasticizer.2.0 .Carbon Black.4.0 .Paraffin.2.0 .H.C. Magnesia.7.0 .Sulphur.0.6 .Lead peroxide.1.4 .Selenium diethyldithio carbamate.3.0 .Formula C. .Butyl Rubber.55.62 .Zinc Oxide.2.16 .Stearic Acid.1.69 .Mineral Oil Plasticizer.2.76 .Paraffin.2.76 .Diatomaceous earth.32.5 .Micronized Sulphur.1.69 .Tetramethylthiuram disulphide.0.57 .Mercaptobenzothiazole.0.25 The tape, which is stated to have good physical, electrical and ozone-resistant properties, may be secured to the cable insulation by means of an adhesive containing an interpolymer of a major proportion of an iso-olefine, specifically iso-butylene and a minor proportion of a conjugated diolefine, preferably isoprene. A satisfactory composition contains:- ..Parts by weight .Butyl Rubber.1000 .Zinc Oxide.50 .Stearic Acid.30 .Micronized Sulphur.40 .Selenium diethyldithiocarbamate.20 .2-mercaptothiazoline.10 The resulting compound is converted into a cement by mixing with a suitable solvent such as naphtha to produce an adhesive of the desired consistency. Specification 591,627 and U.S.A. Specification 2,356,128 are referred to.
GB28536/46A 1945-09-26 1946-09-24 Improvements in and relating to insulated electrical conductors Expired GB616687A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US616687XA 1945-09-26 1945-09-26

Publications (1)

Publication Number Publication Date
GB616687A true GB616687A (en) 1949-01-25

Family

ID=22037313

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28536/46A Expired GB616687A (en) 1945-09-26 1946-09-24 Improvements in and relating to insulated electrical conductors

Country Status (1)

Country Link
GB (1) GB616687A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2929863A (en) * 1956-10-17 1960-03-22 United States Steel Corp Insulated oil well cable

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2929863A (en) * 1956-10-17 1960-03-22 United States Steel Corp Insulated oil well cable

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