Lubricating oil additive composition and lubricating oil composition
US12195691B2 · kind B2 · utility
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14Claims
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Key dates
| Filing date | Dec 28, 2021 |
| Grant date | Jan 14, 2025 |
| Priority date | — |
| Expiry date | Jan 12, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/30
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A lubricating oil additive composition that is suitable as a load bearing additive, and is excellent in wear resistance, extreme pressure property, and thermal stability, and a lubricating oil composition containing the lubricating oil additive composition. A lubricating oil additive composition containing a poly(meth)acrylate-based copolymer (X) containing a structural unit (a) derived from a particular alkyl (meth)acrylate (A), a structural unit (b) derived from a particular hydroxy group containing (meth)acrylate (B), and a structural unit (c) derived from a particular phosphorus-containing (meth)acrylate (C).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.