Gelled oil filling compounds

Details Gelled oil filling compounds Gelled oil filling compounds

H - Electricity

01

B

337/14, 400/3002

H01B 7/28 (2006.01) C08K 5/01 (2006.01) C09K 3/10 (2006.01) G02B 6/44 (2006.01)

Patent

CA 1259723

ABSTRACT A gelled oil filling compound primarily intended for optical cables which meets the standard drainage test at 70°C and is stable to prolonged exposure at -40°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 inhibit it, the preferred example being the polymer sold under the trade mark KRATON G1651 which has a centre segment which is a random copolymer of ethylene and butylene and two end segments consisting essentially of styrene units.

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