Lubricating oil additive and lubricating oil composition containing same
US8183192B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 3, 2010 |
| Grant date | May 22, 2012 |
| Priority date | — |
| Expiry date | Sep 30, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2070/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An overbased salt of an oligomerized alkylhydroxyaromatic compound for use in a lubricating oil composition is disclosed, wherein the alkyl group of the alkylhydroxyaromatic compound is derived from an olefin mixture comprising propylene oligomers having an initial boiling point of at least about 195° C. and a final boiling point of greater than 325° C. and up to about 400° C. as measured by ASTM D86. Also disclosed is a propylene oligomer having an initial boiling point of at least about 195° C. and a final boiling point of greater than 325° C. and up to about 400° C. as measured by ASTM D8, wherein the propylene oligomer contains a distribution of carbon atoms that comprise at least about 50 weight percent of C14 to C20 carbon atoms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.