H - Electricity – 01 – B
Patent
H - Electricity
01
B
H01B 3/20 (2006.01) C08G 18/36 (2006.01) C10M 169/00 (2006.01) G02B 6/44 (2006.01) H01B 3/30 (2006.01) H01B 7/285 (2006.01)
Patent
CA 2226561
A grease composition for use as a cable filling material which contains about 25 to 75 parts by weight of castor oil or a ricinoleate polyol, about 13 to 71 parts by weight of a hydroxy-terminated polymer of polymerized castor oil or the reaction product of a polyisocyanate compound and castor oil or a ricinoleate polyol, and about 4 to 12 parts by weight of colloidal particles such as silica, clay or mixtures thereof. Optionally, an antioxidant component can be added to impart high temperature resistance, a bleed inhibitor, typically of a rubber component, can be added to improve bleed resistance, a water blocking agent of a superabsorbent compound can be added to reduce water transmission, microspheres can be added to reduce the weight of the formulation, and/or conventional additives such as fungicides, bacteriocides etc. can be included. The invention also relates to an article of manufacture such as a cable having a sheath surrounding a plurality of optical fibers therein, with one of the grease compositions of the invention located therein.
L'invention porte sur une graisse de remplissage de câbles comportant environ 25 à 75 parties en poids d'huile de ricin ou d'un polyol de ricinoléate, environ 13 à 71 parties en poids d'un polymère à terminaison hydroxyle d'huile de ricin polymérisée ou du produit de réaction d'un composé de polyisocyanate et d'huile de ricin ou de polyol de ricinoléate, et environ 4 à 12 parties en poids de particules colloïdales telles que de la silice, de l'argile ou des mélanges de celles-ci. On peut ajouter facultativement un antioxydant améliorant la résistance aux hautes températures, un inhibiteur de ressuage, en principe un composant à base de caoutchouc, on peut également ajouter un agent hydrophobe ou un superabsorbant pour réduire le transfert de l'eau, des microsphères pour réduire le poids de la formulation, et/ou des additifs usuels tels que des fongicides, des bactéricides etc. L'invention porte également sur un produit manufacturé tel qu'un câble comprenant une gaine entourant un faisceau de fibres optiques et remplie de l'une des compositions de graisses objet de l'invention.
Caschem Inc.
Osler Hoskin & Harcourt Llp
LandOfFree
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