Grease compositions

A method for manufacturing a grease composition, the grease composition having a base oil and a thickener that includes hydrophilic metal oxide particles and one or more amides that contain one or more unsaturated C—C bonds and/or at least one OH group, wherein the hydrophilic metal oxide particles have a BET specific surface area of at least 10 m2/g, wherein at least 80% of the hydrophilic metal oxide particles have a particle size in the range of from 5 nm to 900 μm, and wherein the amount of the thickener is in the range of from 0.1-40% by weight, based on the total weight of the grease composition, the method comprises:

• mixing the base oil, the hydrophilic metal oxide particles and the one or more amides that contain one or more unsaturated C—C bonds and/or at least one OH group in any possible order of sequence and
• subjecting before or after mixing the hydrophilic metal oxide particles, the one or more amides that contain one or more unsaturated C—C bonds and/or at least one OH group to a mechanical treatment, a thermal treatment or to both a mechanical treatment and a thermal treatment.

A grease composition for lubricating a bearing, a gearing or a coupling having a base oil and a thickener that includes hydrophilic metal oxide particles and one or more amides that contain one or more unsaturated C—C bonds and/or at least one OH group, wherein the hydrophilic metal oxide particles have a BET specific surface area of at least 10 m2/g, wherein at least 80% of the hydrophilic metal oxide particles have a particle size in the range of from 5 nm to 900 μm, and wherein the amount of the thickener is in the range of from 0.1-40% by weight, based on the total weight of the grease composition.