Additive compositions having reduced sulfur contents for...

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C - Chemistry, Metallurgy

10

M

C10M 137/10 (2006.01) C10M 141/10 (2006.01) C10M 163/00 (2006.01)

Patent

CA 2231322

This invention relates to a composition, comprising: (AT) reaction products of compounds represented by the formula (A)and compounds selected to reduce the polysulfide components of (A); and (See Fig. I) wherein in Formula (A), R1, R2, R3 and R4 are independently hydrocarbyl groups, X1 and X2 are independently O or S, and n is zero to 3 (B) an acylated nitrogen-containing compound having a substituent of at least 10 aliphatic carbon atoms. In one embodiment, the inventive composition further comprises (C) a second phosphorus compound other than (A), said second phosphorus compound being a phosphorus acid, phosphorus acid ester, phosphorus acid salt, or derivative thereof. In one embodiment, the inventive composition further comprises (D) an alkali or alkaline earth metal salt of an organic sulfur acid, carboxylic acid or phenol. In one embodiment, the inventive composition further comprises (E) a thiocarbamate In one embodiment the inventive composition further comprises (F), a non-phosphorous organodisulfide. These compositions are useful in providing lubricating compositions and functional fluids with enhanced antiwear properties.

Cette invention porte sur une composition formée de (AT), produits de réaction de composés représentés par la formule (A) et de composés choisis de façon à réduire les composants de type polysulfure de (A); et (voir la fig. I) où, dans la formule (A), R1, R2, R3 et R4 sont, de façon indépendante, des groupes hydrocarbyle, X1 et X2 sont, de façon indépendante, O ou S, et n est compris entre zéro et 3, et (B) est un composé azoté acylé ayant un substituant à chaîne aliphatique d'au moins 10 atomes de carbone. Selon l'une des variantes, la composition de cette invention comprend aussi (C), un deuxième composé phosphoré autre que (A), ledit deuxième composé étant un acide phosphoré, un ester d'acide phosphoré, un sel d'acide phosphoré ou un dérivé de ceux-ci. Selon une autre variante, la composition de l'invention comprend aussi (D), un sel de métal alcalin ou alcalino-terreux d'un acide organique soufré, d'un acide carboxylique ou d'un phénol. Selon un autre variante, la composition de cette invention comprend aussi (E),un thiocarbamate. Selon un autre variante, la composition de cette invention comprend aussi (F),un organodisulfure non phosphoré. Ces compositions sont utiles pour la préparation de compositions lubrifiantes et de fluides de transmission d'énergie à propriétés antiusure améliorées.

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