New sulfured compounds, their preparation and their use as additives for lubricating oils
US5415794A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 1994 |
| Grant date | May 16, 1995 |
| Priority date | — |
| Expiry date | May 10, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M2221/043
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Novel sulfurized compounds, their preparation and use. The compounds are based on the general formula EQU {[R-S.sub.x --(CH.sub.2).sub.n --].sub.z CH.sub.3-z --(CH.sub.2).sub.p --}.sub.2 S.sub.y, in which R is a monovalent hydrocarbon radical having 1 to 30 carbon atoms, optionally functionalized; x is a number equal to or greater than 1; z is an integer equal to 1 or 2; when z=1, n is an integer from 0 to 3 and p is an integer from 0 to 3, with n+p being an integer from 0 to 3; when z=2, n is an integer from 1 to 3 and p is an integer from 0 to 3; and y is a number equal to or greater than 1, at least one of the numbers x and y being strictly greater than 1. The sulphurized compounds can be used as extreme pressure or wear prevention additives in lubricating oils, in particular in oils for gear systems and those used in working metal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.