Borate ester lubricant additives

Details Borate ester lubricant additives Borate ester lubricant additives

C - Chemistry, Metallurgy

07

F

C07F 5/04 (2006.01) C10M 139/00 (2006.01) C10M 159/12 (2006.01)

Patent

CA 2524340

Disclosed are borate and boronate compounds of the formulae (I) and (II), where R1, R2 and R3 are independently hydrogen, straight or branched chain alkyl of 1 to 24 carbon atoms, straight or branched chain alkenyl of 2 to 24 carbon atoms, cycloalkyl of 5 to 12 carbon atoms, aryl of 6 to 10 carbon atoms, aralkyl of 7 to 15 carbon atoms, alkaryl of 7 to 15 carbon atoms; Ar is substituted or unsubstituted aryl of 6 to 10 carbon atoms; and R4 and R5 are independently defined as for R1, and may also be hydroxyphenyl or alkylated hydroxyphenyl, or R4 and R5 together with the -OBO- group form a substituted or unsubstituted 5 or 6 membered ring. The borate and boronate compounds are effective as antiwear, extreme pressure, and friction modifying additives for lubricating oils and fuels.

L'invention concerne des composés borate et boronate de formule (I) et (II) dans lesquelles R¿1?, R¿2? et R¿3? sont indépendamment hydrogène, alkyle à chaîne linéaire ou ramifiée comprenant entre 1 et 24 atomes de carbone, alcényle à chaîne linéaire ou ramifiée comprenant entre 2 et 24 atomes de carbone, cycloalkyle comprenant entre 5 et 12 atomes de carbone, aryle comprenant entre 6 et 10 atomes de carbone, aralkyle comprenant entre 7 et 15 atomes de carbone, alkaryle comprenant entre 7 et 15 atomes de carbone; Ar représente aryle substitué ou non substitué comprenant entre 6 et 10 atomes de carbone; et R¿4? et R¿5? sont indépendamment définis de la même manière que R¿1?, et peuvent également représenter hydroxyphényle ou hydroxyphényle alkylé, ou R¿4? et R¿5? forment avec le groupe -OBO- un cycle substitué ou non substitué à 5 ou 6 éléments. Ces composés borate et boronate sont efficaces en tant qu'additifs anti-usure, extrême-pression, et modificateurs de frottement destinés à des huiles et à des combustibles de lubrification.

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