Low overbased alkylaryl sulfonates
US6551967B2 · kind B2 · utility
26Cited by
8References
2Claims
0Family size
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Key dates
| Filing date | Nov 20, 1998 |
| Grant date | Apr 22, 2003 |
| Priority date | — |
| Expiry date | Nov 20, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M135/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Low overbased alkaline earth metal alkylaryl sulfonate having a Total Base Number of from about 2 to about 30, a dialkylate content of 0% to about 25% and a monoalkylate content of about 75% to about 90% or more, wherein the alkylaryl moiety is alkyltoluene or alkylbenzene in which the alkyl group is a C15-C21 branched chain alkyl group derived from a propylene oligomer are useful as lubricating oil additives.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.