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US 2022/0127541 A1Published application
Lubricant composition
AssigneePolybridge
InventorPascal XANTHOPOULOS
Life of this patent
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Abstract
The present invention relates to a lubricating composition comprising a base oil and an antioxidant additive, said antioxidant additive comprising a phenolic antioxidant, an amine antioxidant, and a tocopherol supplement comprising at least one member of the list consisting of: beta-tocopherol, delta-tocopherol and gamma-tocopherol. The present invention also relates to a use of a lubricating composition according to the invention, in a combustion engine.
Claims8
A lubricating composition comprising a base oil and an antioxidant additive, wherein:
- the content by weight of the antioxidant additive is between 0.5 and 1.5%,
- said antioxidant additive comprises a phenolic antioxidant, an amine antioxidant, and a tocopherol supplement,
- the antioxidant additive has a content by weight of tocopherol supplement between 5 and 30%,
- the tocopherol supplement comprises at least one element from the list consisting of:
- beta-tocopherol, delta-tocopherol and gamma-tocopherol,
- the sum of the contents by weight of beta-tocopherol, delta-tocopherol and gamma-tocopherol in the tocopherol supplement is greater than 50%.
3 more elements
Dependencies are inferred from the claim text.