Gelled oil filling compounds

Details Gelled oil filling compounds Gelled oil filling compounds

1985-11-13

1987-12-01

Lee, John

Electricity: conductors and insulators

Feedthrough or bushing

Compression

174 23C, 523173, 524474, 524505, G02B 644

Patent

active

047099828

ABSTRACT:
A gelled oil filling compound primarily intended for optical cables which meets the standard drainage test at 70.degree. C. and is stable to prolonged exposure at -40.degree. C. consists essentially of a low aromatic hydrocarbon oil and a block copolymer with a molecular weight in the range 200,000 to 2,000,000. The block copolymer comprises at least one segment tending to confer solubility in the oil and at least one segment tending to inhabit it, the preferred example being the polymer sold under the trade mark KRATON G1651 which has a center segment which is a random copolymer of ethylene and butylene and two end segments consisting essentially of styrene units.

REFERENCES:
patent: 4324453 (1982-04-01), Patel
patent: 4369284 (1983-01-01), Chen
patent: 4464013 (1984-08-01), Sabia
patent: 4497538 (1985-02-01), Patel
patent: 4509821 (1985-04-01), Stenger
patent: 4617422 (1986-10-01), Hagger
Shell Chemical Co., Technical Bulletin SC:72-78: Solution Behaviour of Kraton G Thermoplastic Rubber (Jul. 1978).
Shell Chemical Co., Booklet: Kraton Thermoplastic Rubber: Typical Properties Kraton D: Kraton G. (Oct. 1982), Bulletin SC: 68-82.

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