Aktiebolaget Skf

Dries Muller

Dick Meijer

Sathwik Chatra Kalsanka Ramakrishna

John F Van De Sanden

Jos Holsnijders

Richard Schaake

Alejandro Sanz

Jeroen Bongaerts

Alexander De Vries

Rihard Pasaribu

Martines Maria Josef Noordman

Maarten Noordman

Piet Lugt

Van De John Sanden

A grease composition comprising a thickener and a lubricating base oil, wherein the lubricating base oil has a viscosity in the range of from 5-1000 cSt (at 40&#xb0; C.). The thickener is present in an amount of 5-40 wt. %, based on total weight of the grease composition. The thickener comprises an ester terminated oligomer which has the general formula: 'R1&#x2014;O&#x2014;[CO&#x2014;R2&#x2014;CO&#x2014;NH&#x2014;R3&#x2014;NH&#x2014;CO&#x2014;R2&#x2014;CO]n-O&#x2014;R1'. 'R1' represents a hydrocarbon group containing 4-22 carbon atoms. &#x201c;R2&#x201d; represents a hydrocarbon group containing 4-42 carbon atoms. &#x201c;R3&#x201d; represents a hydrocarbon group containing 2-9 carbon atoms. &#x201c;n&#x201d; represents an integer in the range of 1-20. The weight ratio between the lubricating base oil and the ester terminated oligomer (oil/oligomer) is larger than 1. The grease composition can be used for lubricating a mechanical component having a metal surface and/or for protecting a mechanical component having a metal surface against corrosion, wear and/or fretting.

Grease compositions and a method for making the same

A grease composition contains a mixture of a lubricating base oil, an ester-terminated polyamide and at least one polyolefin. The ester-terminated polyamide has the formula:R1-O&#x2014;CO&#x2014;R2-CO&#x2014;[NH&#x2014;R3-NH&#x2014;CO&#x2014;R2-CO]-O&#x2014;R1.R1 contains 4-22 carbon atoms, R2 contains 4-42 carbon atoms, R3 contains 2-9 carbon atoms and n is an integer in the range of 1-20. The grease composition can be used for lubricating a mechanical component having a metal surface and/or for protecting a mechanical component having a metal surface against corrosion, wear and/or fretting.

Grease compositions and method for making the same

A process for the manufacture of a lubricating grease composition, the process comprising steps of: (a) providing an essentially homogeneous liquid composition comprising a lubricating oil and a thickening polymer, and (b) flowing the liquid composition through a shear-mixing device to mix and cool the liquid composition to form a lubricating grease composition.

Polymer grease manufacturing process

The invention provides a process for preparing a protective layer on a tribological surface of a mechanical component, wherein the layer comprises a metal phosphate and/or metal sulphate having anti-wear and/or anti-fretting properties, and the process comprises subjecting the tribological surface of the component to a mechanical treatment which is carried out with a tool that moves at or along the tribological surface during which treatment the metal phosphate and/or metal sulphate in solid form is provided and the layer is formed on the surface of the mechanical component by means of deposition of the metal phosphate and/or metal sulphate compound.

Process for preparing a protective layer on a tribological surface of a mechanical component

A lubricant system is disclosed that is formed by contacting a fibrous network with oil and/or lubricating fluid having an affinity for the fibrous network. The fibrous network comprises oleophilic fibers having a diameter between 50 nm and 10 microns and a length that is at least times the diameter. In addition, the oleophilic fibers have an affinity for the oil and/or lubricating fluid.

Lubricant system and method of forming the same

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Nijmegen, Netherlands

Dries Muller