Detergent compositions
US6008166A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 1997 |
| Grant date | Dec 28, 1999 |
| Priority date | — |
| Expiry date | Aug 1, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M2219/089
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A detergent concentrate composition suitable for incorporation into a finished lubricating oil comprises: (A) an additive concentrate comprising: PA1 (a) a lubricating oil, and PA1 (b) a lubricating oil soluble sulphurised or non-sulphurised alkaline earth metal hydrocarbyl phenate modified by reaction to incorporate from greater than 2 to less than 40% by weight based on the weight of the concentrate (A) of either (i) at least one carboxylic acid having the formula: ##STR1## wherein R is a C.sub.10 to C.sub.24 alkyl or alkenyl group and R.sup.1 is either hydrogen, a C.sub.1 to C.sub.4 alkyl group or a --CH.sub.2 -COOH group, or an anhydride or ester thereof, or (ii) a di- or polycarboxylic acid containing from 36 to 100 carbon atoms or an anhydride or ester thereof, the concentrate having a BN greater than 300 and a viscosity at 100.degree. C. of less than 1000 cSt, and (B) an additive concentrate comprising: PA1 (a) a lubricating oil, and PA1 (b) a lubricating oil soluble sulphurised or non-sulphurised alkaline earth metal hydrocarbyl phenate, that has not been modified or has been modified by reaction to incorporate less than 0.1% by weight based on the weight of the concentrate…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.