C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 323/20 (2006.01) C07C 319/14 (2006.01) C07C 319/22 (2006.01) C09K 15/14 (2006.01) C10L 1/24 (2006.01) C10M 135/30 (2006.01)
Patent
CA 2229721
The present invention relates generally to substantially liquid, chlorine-free, sulfur-bridged phenols useful as antioxidants and more specifically to the preparation of a substantially liquid, chlorine-free, sulfur-bridged, hindered phenol compositions, using 1-propanol as the reaction solvent, which are effective antioxidant(s) in lubricating oils and liquid organic fuels without causing excessive copper corrosion and which exhibit improved elastomer seal compatibility. The invention also includes lubricating oils and liquid organic fuels containing an antioxidant additive of the present invention, as well as a method of reducing oxidation in the lubricating oil or liquid organic fuel used in a machine such as an internal combustion engine.
La présente invention concerne généralement des phénols liquides, sans chlore, à pont sulfure substantiellement utiles comme antioxydants et plus spécifiquement la préparation de compositions de phénol encombré substantiellement liquides, sans chlore, à pont sulfure, à l'aide de propanol-1 comme solvant de réaction, qui sont des antioxydants efficaces dans les lubrifiants et les combustibles organiques liquides sans causer de corrosion excessive du cuivre et qui présentent une compatibilité améliorée avec les joints d'étanchéité élastomériques. L'invention porte également sur des lubrifiants et combustibles organiques liquides contenant un additif antioxydant issu de la présente invention, ainsi qu'une méthode pour réduire l'oxydation des lubrifiants et combustibles organiques liquides utilisés dans une machine comme un moteur à combustion interne.
Gatto Vincent J.
Kadkhodayan Abbas
Albemarle Corporation
Corporation Ethyl
Macrae & Co.
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