EP 2500402 A1 20120919 - Antioxidant additive composition, a solution thereof, and a method for improving the storage stability of biodiesel fuel (variants)
Title (en)
Antioxidant additive composition, a solution thereof, and a method for improving the storage stability of biodiesel fuel (variants)
Title (de)
Antioxidationszusatzstoffzusammensetzung, Lösung daraus und Verfahren zur Verbesserung der Lagerstabilität von Biodieselkraftstoff (Varianten)
Title (fr)
Composition d'additif anti-oxydant, solution associée et procédé d'amélioration de la stabilité de stockage de carburant biodiesel (variantes)
Publication
Application
Priority
RU 2011110454 A 20110318
Abstract (en)
This invention relates to the petrochemical industry, in particular, to a method for improving the storage stability of biodiesel fuel via using an antioxidant additive. A method for improving the storage stability of biodiesel fuel, comprising addition of an alkylphenol-based antioxidant additive via providing an initial solution that contains 6 to 48 mass % of the alkylphenol-based composition comprised of, mass %: 2,6-di- tert -butyl-4-methylcyclohexanone - 0.2 - 0.3; 2,6-di- tert -butylphenol - 0,7 - 6.0; 2- sec -6- tert- butyl- p-cresol- 1.5 - 5.0; 4,6-di- tert -butyl- o -cresol - 3.0 - 8.0; 2,4-di- tert -butylphenol - 0.3 - 0.5; 2,4-di- tert -butyl-6-dimethylminomethylphenol- 2.0 - 5.0; 4,4-methylene-bis(2,6-di- tert -butylphenol) - 0.1 - 0.3; and 2,6-di- tert -butyl-4-methylphenol - to the balance, dissolved in biodiesel fuel; and adding the solution of the composition to the biodiesel fuel to reach a concentration of the composition of from 0.002 to 1.6 mass % based on the entire biodiesel fuel solution. The technical result consists of a considerable improvement of the storage stability of biodiesel fuel with a reduced amount of the antioxidant additive. The antioxidant additive used inhibits precipitation during the shelf life of biodiesel fuel for a longer period of time.
IPC 8 full level
C10L 1/14 (2006.01)
CPC (source: BR EP US)
C10L 1/14 (2013.01 - BR EP US); C10L 1/18 (2013.01 - BR EP US); C10L 1/1832 (2013.01 - EP US); C10L 1/1857 (2013.01 - EP US); C10L 1/2235 (2013.01 - EP US); C10L 2200/0476 (2013.01 - EP US); C10L 2230/081 (2013.01 - EP US); C10L 2230/14 (2013.01 - EP US); C10L 2300/40 (2013.01 - EP US)
Citation (applicant)
- US 2006219979 A1 20061005 - ASBAHR HARK-OLUF [DE], et al
- EP 0189049 A1 19860730 - HENKEL KGAA [DE]
- RU 2340655 C2 20081210 - LANGSESS DOJCHLAND GMBKH [DE]
- WO 2008065015 A1 20080605 - CIBA HOLDING INC [CH], et al
- DE 10252715 A1 20040527 - BAYER AG [DE]
- SIMKOVSKY, N.M., ECKER, A.: "Effect of Antioxidants on the Oxidation stability of Rapeseed Oil Methyl Esters", ANALYTIK, 1999, pages 317 - 318
Citation (search report)
- [A] US 2009094887 A1 20090416 - CALVERT NANCY R [US], et al
- [A] DE 10252714 A1 20040527 - BAYER AG [DE]
- [A] US 2006218855 A1 20061005 - ASBAHR HARK-OLUF [DE], et al
- [A] US 2006219979 A1 20061005 - ASBAHR HARK-OLUF [DE], et al
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 2500402 A1 20120919; AR 082550 A1 20121219; BR PI1104326 A2 20130521; BR PI1104326 B1 20191008; US 2012233912 A1 20120920
DOCDB simple family (application)
EP 11176692 A 20110805; AR P110102909 A 20110810; BR PI1104326 A 20111006; US 201113195363 A 20110801