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
GB149345A
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.)
Callenders Cable and Construction Co Ltd
Original Assignee
Callenders Cable and Construction 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 Callenders Cable and Construction Co LtdfiledCriticalCallenders Cable and Construction Co Ltd
Priority to GB149345ApriorityCriticalpatent/GB581830A/en
Publication of GB581830ApublicationCriticalpatent/GB581830A/en
H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
H01B9/00—Power cables
H01B9/06—Gas-pressure cables; Oil-pressure cables; Cables for use in conduits under fluid pressure
H01B9/0611—Oil-pressure cables
Landscapes
Organic Insulating Materials
(AREA)
Compositions Of Macromolecular Compounds
(AREA)
Abstract
581,830. Impregnating compositions. CALLENDER'S CABLE & CONSTRUCTION CO., Ltd., and KING, A. Jan. 18, 1945, No. 1493. [Class 140] [Also in Group XXXVI] In a dielectric of impregnated fibrous material for insulating an electric cable, the impregnant within the fibrous material and in the interstices between the turns and layers contains at least 55 per cent. by weight of microcrystalline petroleum wax having a melting point of 80‹C. or higher. The impregnant may consist wholly of the wax, or it may consist of at least 55 per cent. of the wax and a mineral oil or plasticizer such as polyisobutene, polyisobutylene of the grades having a molecular weight between 20,000 and 100,000, or rosin, or a mixture of oil with one or more of these plasticizers, a suitable mixture of oil and polyisobutene being that sold under the Registered Trade Mark "Paratac." Specification 524,246 is referred to.
GB149345A1945-01-181945-01-18Improvements in the manufacture of electric cables
ExpiredGB581830A
(en)
A procedure for the preparation of non-emergency mixtures for the impregnation of the insulation of the high or low voltage electrical cables (Machine-translation by Google Translate, not legally binding)
Improvements in the preparation of impregnation mixtures in the manufacture of electrical cables based on insulation in impregnated paper (Machine-translation by Google Translate, not legally binding)