EP 2334767 B1 20130529 - FATTY ESTER COMPOSITIONS WITH IMPROVED OXIDATIVE STABILITY
Title (en)
FATTY ESTER COMPOSITIONS WITH IMPROVED OXIDATIVE STABILITY
Title (de)
FETTESTERZUSAMMENSETZUNGEN MIT VERBESSERTER OXIDATIONSSTABILITÄT
Title (fr)
COMPOSITIONS D'ESTERS GRAS DOTÉES D'UNE STABILITÉ AMÉLIORÉE À L'OXYDATION
Publication
Application
Priority
- EP 2009061136 W 20090828
- US 9261708 P 20080828
Abstract (en)
[origin: WO2010023277A1] Compositions containing unsaturated fatty esters may be stabilized against atmospheric oxidation by the addition of an antioxidant package containing at least onenitroxide free-radical scavenger and at least one alkylalkanolamine. Compositions treated in this manner show good resistance to atmospheric oxidation and resultant viscosity increase.An advantage of the nitroxide free-radical scavenger is that it stops the oxidation of the unsaturated fatty esters already during the initiation stage. Moreover, it is much less volatile than for example the known alkylhydroxylamine oxygen scavengers. By the use of a nitroxide free- radical scavenger, the composition can thus be stabilized for a longer period of time. The stability period is moreover less affected by the supply of oxygen to the composition. The solubility problem of the nitroxide in the fatty ester component can be solved by dissolving the nitroxide first in the alkylalkanolamine.
IPC 8 full level
C10L 1/14 (2006.01); C10L 1/22 (2006.01); C11B 5/00 (2006.01)
CPC (source: EP US)
C10L 1/14 (2013.01 - EP US); C10L 1/22 (2013.01 - EP US); C11B 5/005 (2013.01 - EP US); C10L 1/19 (2013.01 - EP US); C10L 1/2225 (2013.01 - EP US); C10L 1/23 (2013.01 - EP US); C10L 1/232 (2013.01 - EP US); C10L 1/2412 (2013.01 - EP US); C10L 1/2425 (2013.01 - EP US)
Designated contracting state (EPC)
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 SE SI SK SM TR
DOCDB simple family (publication)
WO 2010023277 A1 20100304; AU 2009286657 A1 20100304; BR PI0917345 A2 20151117; CA 2734885 A1 20100304; CN 102131902 A 20110720; EP 2334767 A1 20110622; EP 2334767 B1 20130529; US 2011154724 A1 20110630
DOCDB simple family (application)
EP 2009061136 W 20090828; AU 2009286657 A 20090828; BR PI0917345 A 20090828; CA 2734885 A 20090828; CN 200980133084 A 20090828; EP 09782335 A 20090828; US 200913059375 A 20090828