Sulfur-containing compositions, and additive concentrates, lubricating oils, metal working lubricants and asphalt compositions containing same
US4740322A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1986 |
| Grant date | Apr 26, 1988 |
| Priority date | — |
| Expiry date | Jan 31, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/247
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Sulfur-containing compositions are described which are prepared by sulfurizing PA0 (A) at least one fatty acid ester of a polyhydric alcohol, or PA0 (B) at least one fatty acid, fatty acid ester of a monohydric alcohol, or a mixture thereof, or PA0 (C) at least one other olefin, or PA0 (D) mixtures of any two or more of (A), (B) and (C), in the presence of a catalytic amount of PA0 (E) at least one salt of at least one dithiocarbamic acid of the formula EQU R.sub.1 (R.sub.2)N--CSSH PA0 wherein R.sub.1 and R.sub.2 are each independently hydrocarbyl groups, or PA0 (F) at least one mercapto benzothiazole, or PA0 (G) mixtures of (E) and (F). Preferably, various mixtures of (A), (B) and (C) are sulfurized in accordance with the invention. The incorporation of a catalytic amount of salt of at least one dithiocarbamic acid of Formula I or at least one mercapto benzothiazole (or mixtures thereof) results in the preparation of sulfurized compositions which are characterized by excellent oil solubility and higher sulfur contents, and the compositions generally are lighter in color when compared to sulfurized compositions prepared in the absence of such catalysts. The sulfurized compositions …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.