Friction-improved polymers for DLC-coated surfaces
AssigneeEvonik Oil Additives GmbH
InventorsBoris Eisenberg, Torsten Stoehr
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Abstract
The present invention relates to a component part comprising at least two components movable with respect to one another, between the surfaces of which is provided a film formed by a lubricant oil composition, the surface of at least one of the movable components being formed at least partly by a diamond-like-carbon layer (DLC layer) and the lubricant oil composition comprising at least one polymer comprising repeat units derived from amine derivatives of at least one polar ethylenically unsaturated monomer.
Claims17
An element comprising at least two components movable with respect to one another, between surfaces of which is disposed a film comprising a lubricant oil composition, wherein a surface of at least one of the movable components comprises a diamond-like-carbon layer (DLC layer) and the lubricant oil composition comprises 0.5 to 15% by weight of a polymer comprising a repeat unit derived from an amine derivative of at least one polar ethylenically unsaturated monomer, the amine derivative being derived from N-phenyl-1,4-phenylenediamine,
- wherein:
- the polar ethylenically unsaturated monomer from which the amine derivative is derived is maleic anhydride.
Dependencies are inferred from the claim text.