Fuel oil composition
US7497880B2 · kind B2 · utility
0Cited by
4References
16Claims
0Family size
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Inventor
Key dates
| Filing date | May 28, 2004 |
| Grant date | Mar 3, 2009 |
| Priority date | — |
| Expiry date | Nov 20, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10L1/224
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A fuel oil composition comprising a fuel oil and 0.1 to 10,000 ppm of a polymeric condensation product which is formed by the reaction of an aliphatic aldehyde or ketone, or a reactive equivalent, with either (i) a straight or branched chain C1-C7 alkyl ester of p-hydroxybenzoic acid, or with (ii) a branched chain C8-C16 alkyl ester of p-hydroxybenzoic acid, or with (iii) a mixture of long chain C8-C18 alkyl esters of p-hydroxybenzoic acid, at least one of said alkyls being branched. The polymeric condensation product improves the cold flow characteristics of the fuel oil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.