Alkylated 5,6,7,8-tetrahydronaphthalenols as antioxidants in lubricating oils and greases
US4392969A · kind A · utility
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6References
11Claims
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Inventor
Key dates
| Filing date | Sep 8, 1981 |
| Grant date | Jul 12, 1983 |
| Priority date | — |
| Expiry date | Sep 8, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2050/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Alkylated 5,6,7,8-tetrahydronaphthalenols are effective antioxidants for fuel oils, lubricating oils, greases, plastics, and rubbers over a wide temperature range. Di- and tri-alkylated tetrahydronaphthalenols are especially effective, with the di- and tri-isopropylated materials being preferred.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.