N-substituted tetrahydroquinolines for use as antioxidants in lubricants
US4965006A · kind A · utility
10Cited by
8References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 2, 1989 |
| Grant date | Oct 23, 1990 |
| Priority date | — |
| Expiry date | Feb 2, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/20
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Composition containing (a) at least one lubricant, hydraulic oil or metal-working fluid based on mineral oil or synthetic oils and (b) 0.05-5% by weight, based on the total weight of the lubricant, hydraulic oil or metal-working fluid composition, of at least one compound of the formula I, ##STR1## where R.sup.1 and R.sup.2 are independently alkyl, aryl, substituted aryl or benzyl, R.sup.3 is hydrogen or methyl, R.sup.4 and R.sup.5 are independently hydrogen, methyl, methoxy, chloro or nitro, R.sup.6 is alkyl, alkenyl, aralkyl or substituted benzyl, and R.sup.13 is hydrogen or methyl.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.