Low viscosity, chloride-free, low overbased alkyl-aryl-sulfonate, its application as an additive for lubricating oil, and methods of preparation
US6159912A · kind A · utility
2Cited by
4References
12Claims
0Family size
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Key dates
| Filing date | Nov 5, 1998 |
| Grant date | Dec 12, 2000 |
| Priority date | — |
| Expiry date | Nov 5, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2010/12
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A low overbased alkyl phenyl sulfonate prepared by the neutralization of sulfonic acid with a sulfurized high TBN calcium alkylphenate in the absence of chloride and in the absence of additional carboxylic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.