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US 2023/0340353 A1Published application
Industrial oil composition
AssigneeCitizen Watch Co., Ltd.
InventorYuji AKAO
Life of this patent
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Abstract
An industrial oil composition contains a mineral or a synthetic oil as a base oil, and a neutral phosphite ester derivative represented by the following formula (B) and a 2,6-di-t-butylphenol derivative represented by the following formula (C) as antioxidants. In the formula (B), Rb21 to Rb24 each independently represent an aliphatic hydrocarbon group of 10 to 16 carbon atoms. In the formula (C), Rc1 represents a straight-chain or a branched alkyl group of 1 to 12 carbon atoms.
Claims4
An industrial oil composition comprising;
- a mineral or a synthetic oil as a base oil, and
- a neutral phosphite ester derivative represented by the following formula (B) and a 2,6-di-t-butylphenol derivative represented by the following formula (C) as antioxidants:
- in the formula (B), Rb21 to Rb24 each independently represent an aliphatic hydrocarbon group of 10 to 16 carbon atoms, Rb25 to Rb28 each independently represent a straight-chain or branched alkyl group of 1 to 6 carbon atoms, Rb291 and Rb292 each independently represent a hydrogen atom or a straight-chain or branched alkyl group of 1 to 5 carbon atoms, and a total number of carbon atoms of Rb291 and Rb292 is 1 to 5,
- in the formula (C), Rc1 represents a straight-chain or branched alkyl group of 1 to 12 carbon atoms.
1 more element
Dependencies are inferred from the claim text.