Phosphazene derivatives and use of same as stabilizers for...

Details Phosphazene derivatives and use of same as stabilizers for... Phosphazene derivatives and use of same as stabilizers for...

C - Chemistry, Metallurgy

08

G

C08G 79/02 (2006.01) C07F 9/6581 (2006.01) C07F 9/6593 (2006.01) C10M 107/38 (2006.01) C10M 169/00 (2006.01) C10M 169/04 (2006.01)

Patent

CA 2102739

New phosphazene derivatives, fully substituted by aromatic groups and perfluoropolyethereal chains, are utilized as stabilizers for oils and greases based on perfluoropolyethers. Such derivatives inhibit the degradation process affecting the perfluoropolyethereal chains when these are subjected to high temperatures in an oxidizing atmosphere and in the presence of metals, such as for example aluminium, titanium, vanadium and their alloys, or steels.

De nouveaux dérivés du phosphazène, avec substitution complète par des groupes aromatiques et des chaînes perfluoropolyéthérées, sont utilisés comme stabilisateurs pour des huiles et des graisses à base de perfluoropolyéthers. Ces dérivés empêchent la dégradation des chaînes perfluoropolyéthérées lorsque celles-ci sont exposées à des températures élevées dans une atmosphère oxydante et en présence de métaux, comme par exemple l'aluminium, le titane, le vanadium et leurs alliages, ou les aciers.

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