Lubricant composition for shock absorbers, additive for friction adjustment, lubricant additive, shock absorber and friction adjustment method for lubricant composition for shock absorbers
AssigneeKYB Corporation
InventorShinji Kato
Life of this patent
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Abstract
To provide a lubricant composition for shock absorbers, a friction adjusting additive for a lubricant for shock absorbers, and a lubricant additive, each capable of satisfying both operational stability and ride comfort and improving the ride comfort further. The lubricant composition for shock absorbers contains a base oil and a friction adjusting agent and the friction adjusting agent contains a first zinc dithiophosphate represented by the following formula 1: [in the formula 1, R11 to R14 are alkyl groups in which one or more and three or less is/are a primary alkyl group and the other(s) is/are a secondary alkyl group].
Claims11
A lubricant composition for shock absorbers, comprising a base oil and a friction adjusting agent, wherein the friction adjusting agent contains a first zinc dithiophosphate represented by the following formula 1:
- [in the formula 1, R11 to R14 are alkyl groups in which one or more and three or less is/are a primary alkyl group and the other(s) is/are a secondary alkyl group].
A friction adjusting additive for a lubricant for shock absorbers, comprising a first zinc dithiophosphate represented by the following formula 1:
- [in the formula 1, R11 to R14 are alkyl groups in which one or more and three or less is/are a primary alkyl group and the other(s) is/are a secondary alkyl group].
A lubricant additive, comprising a first zinc dithiophosphate represented by the following formula 1:
- [in the formula 1, R11 to R14 are alkyl groups in which one or more and three or less is/are a primary alkyl group and the other(s) is/are a secondary alkyl group].
A method of adjusting the friction of a lubricant for shock absorbers, comprising adding, to a lubricant composition for shock absorbers containing a base oil and a friction adjusting agent, a first zinc dithiophosphate represented by the following formula 1 as the friction adjusting agent:
- [in the formula 1, R11 to R14 are alkyl groups in which one or more and three or less is/are a primary alkyl group and the other(s) is/are a secondary alkyl group].
Dependencies are inferred from the claim text.