Lubricant composition
US5268113A · kind A · utility
13Cited by
6References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 20, 1992 |
| Grant date | Dec 7, 1993 |
| Priority date | — |
| Expiry date | Aug 20, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/28
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Lubricants can be stabilized against oxidation by the addition of PA0 a) a sterically hindered amine and PA0 b) a phenol of formula I ##STR1## wherein A, is hydrogen, alkyl, cycloalkyl, phenylalkyl, phenyl or alkylthiomethyl, B is alkyl, cycloalkyl, phenylalkyl, phenyl or alkylthiomethyl and X is hydrogen, alkyl or substituted alkyl. It is preferred to use phenols of formula I which contain a thioether group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.