Petroleum additive having excellent storage stability and heat stability comprising an alkaline earth metal salt of aromatic hydroxycarboxylic acid or a sulfurized mixture thereof
US5895777A · kind A · utility
10Cited by
7References
10Claims
0Family size
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Key dates
| Filing date | Dec 6, 1996 |
| Grant date | Apr 20, 1999 |
| Priority date | — |
| Expiry date | Dec 6, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M159/22
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
A petroleum additive having excellent storage stability and heat stability, which comprises an alkaline earth metal salt of aromatic hydroxycarboxylic acid containing a higher aliphatic carboxylic acid, a higher aliphatic amine or a higher aliphatic amide, or a sulfurized mixture thereof. A process for improving storage stability, heat stability and viscosity character of the petroleum additive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.