Chemical compositions and their use as fuel additives
US5578091A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 1992 |
| Grant date | Nov 26, 1996 |
| Priority date | — |
| Expiry date | Oct 13, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10L1/2475
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Compounds of general formula (I) wherein X and Y are the same or different and are selected from the group consisting of SO.sub.3 (--), --CO--, --C(O)O(--), --R.sup.4 --C(O)O--, --NR.sup.3 C(O)--, --R.sup.4 O--, --R.sup.4 --C(O)O--, --R.sup.4 -- and --NC(O)--, R.sup.4 being --(CH.sub.2).sub.m -- where m is from 0 to 5 and R.sup.3 is defined below; X.sup.1 and Y.sup.1 are the same or different and are selected from the group consisting of (a), R.sup.1 and R.sup.2 being independently selected from the group consisting of alkyl, alkoxy alkyl or polyalkoxyalkyl groups that contain at least 10 carbon atoms in their main chain, and R.sup.3 being a hydrocarbyl group, each R.sup.3 in a compound of formula (I) being the same of different; A is, together with the carbon atoms with which it constitutes the ring structure in formula (I), an aromatic, non-aromatic, or aliphatic group, where any of such groups can be mono- or polycyclic and/or can include one or more hetero atoms selected from nitrogen, sulphur and oxygen; and Z is selected from nitro, hydroxy, alkyl, alkoxy, carboxy acid and carboxy ester, and their use as low temperature flow improvers for distillate fuels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.