COMPOSITION DE REMPLISSAGE DE CABLES, NOTAMMENT A FIBRES OPTIQUES

L'INVENTION CONCERNE UNE COMPOSITION DE REMPLISSAGE D'UN CABLE, NOTAMMENT D'UN CABLE CONTENANT AU MOINS UNE FIBRE OPTIQUE, UTILISABLE ENTRE -50C ET 80C.SELON L'INVENTION, CETTE COMPOSITION COMPREND:I.80 A 95 EN POIDS D'AU MOINS UNE BASE LUBRIFIANTE DE VISCOSITE INFERIEURE A 7000MMS A -40C, ETII.20 A 5 EN POIDS D'UN PRODUIT GELIFIANT.SON POINT DE GOUTTE EST SUPERIEUR A 120C ET SA PENETRABILITE AU CONE EST COMPRISE ENTRE 250 ET 400 DIXIEMES DE MILLIMETRE A 25C, ET ENTRE 150 ET 250 DIXIEMES DE MILLIMETRE A -40C. 1. A composition for filling a cable, which contains at least one optical fibre and which can be used between -50 degrees C and + 80 degrees C, said composition being characterised in that it can be injected at a temperature below 60 degrees C, and in that it is composed of : i) 80 to 95% by weight of at least one lubricant base of a viscosity lower than 6000 mPa.s at -40 degrees C, and ii) 20 to 5% by weight of a gelling product belonging to the group comprising the hydroxysubstituted hydrophobic soaps of saturated higher fatty acids, alone or mixed with soaps of saturated higher fatty acids of alkaline and alkaline-earth metals, Bentone and colloidal silica, and in that its dropping point is higher than 120 degrees C and its cone penetrability is between 250 and 400 tenths of a millimetre at +25 degrees C and between 150 and 250 tenths of a millimetre at -40 degrees C.