Water-resisting oil base filling media for use in electric...

Details Water-resisting oil base filling media for use in electric... Water-resisting oil base filling media for use in electric...

Category

C - Chemistry, Metallurgy

Subcategory

09

Subsubcategory

K

CPC

400/1700, 400/40

IPC codes

C09K 3/00 (2006.01) H01B 3/22 (2006.01)

Type

Patent

Patent number

CA 1117678

Description

Abstract Waterproof filling medium, used in telecommunication cables with cellular insulation of polyethylene or polypropylene, is based on a mineral oil (with or without a gelling agent such as microcrystalline wax) and includes two non-polar additives. The first is soluble and of low enough molecular weight to reduce significantly the osmotic pressure of the base, but does not diffuse into the insulation below 80 °C; and the second is polymeric and of high enough molecular weight to increase the resistance to flow to obtain the required non-draining property. Filling of cells in the insulation is inhibited.

Application Number

313557

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