Cable grease composition and articles incorporating same
AssigneeCasChem, Inc.
InventorsMelvin Brauer, Yuan C. Chu
Life of this patent
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Abstract
A grease composition for use as a cable filling material which contains about 75 to 95 parts by weight of a base component of a polyol or ester having a molecular weight of at least about 3000 and about 2 to 20 parts by weight of colloidal particles such as silica. Optionally, an antioxidant component can be added to impart high temperature resistance or a rubber component can be added to improve bleed resistance. Also, an article of manufacture of a cable having a sheath with one of the grease compositions of the invention located therein, and a method for filling the cable with such grease compositions.
Claims21
A cable filling material of a grease composition consisting essentially of about 75 to 95 parts by weight of a polyol comprising a polybutadiene diol, triol or tetrol and having a molecular weight of at least about 3000;
- and about 2 to 15 parts by weight of colloidal particles of silica, clay or mixtures thereof.
A cable filling material of a grease composition consisting essentially of about 75 to 95 parts by weight of a polyester polyol having a hydroxy functionality of at least 2 and a molecular weight of at least about 3000;
- and about 2 to 15 parts by weight of colloidal particles of silica, clay or mixtures thereof.
A cable filling material of a grease composition consisting essentially of about 75 to 95 parts by weight of a polyol having a hydroxy functionality of at least 2 and a molecular weight of at least about 3000;
- about 2 to 15 parts by weight of colloidal particles of silica, clay or mixtures thereof;
- and about 2 to about 5 parts by weight of an antioxidant of a sterically hindered phenolic compound so that the composition has an oxidative induction time of at least about 10 minutes at 190.degree. C. in a pure oxygen environment.
Dependencies are inferred from the claim text.