Lubricant grease comprising spent bleaching earths
OwnerManuela Toscanini, Ornella Cianoinventors
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Abstract
A lubricant grease is described comprising at least one base oil, at least one main thickening agent, and optionally one or more additives comprising a second thickening agent in smaller quantities than said main thickening agent and a polymer additive, wherein said main thickening agent is one or more spent bleaching earths, and is present in a quantity up to 80%-90% by weight relative to the weight of the total composition of the grease, and wherein the base oil is fossil oil or oil of biological origin, renewable oil and/or biodegradable oil, or combinations thereof, preferably Group I mineral base oils (GPI), said lubricant grease being an infusible grease and classifiable according to the NLGI scale.
Claims19
A lubricant grease comprising
- at least one base oil or mixtures of base oils,
- at least one first thickening agent,
- optionally, a second thickening agent, preferably in smaller quantities than the quantities of said first main thickening agent;
- and/or
- optionally, a polymer additive, possibly provided with water barrier properties,
- wherein said first thickening agent is one or more spent bleaching earths (SBE) and is present in a quantity from 10% up to 90% by weight relative to the total weight of the composition of said grease, and
- wherein said at least one or more base oils are fossil oils, synthetic oils, oils of biological origin, renewable oils and/or biodegradable oils, preferably except for UCOs (Used Cooking oils), or combinations thereof,
- said lubricant grease having a consistency classified according to the NLGI scale,
- said lubricant grease preferably being an infusible grease.
Dependencies are inferred from the claim text.