Sulphurised alkaline earth metal hydrocarbyl phenates, their...

Details Sulphurised alkaline earth metal hydrocarbyl phenates, their... Sulphurised alkaline earth metal hydrocarbyl phenates, their...

C - Chemistry, Metallurgy

10

M

253/87

C10M 159/22 (2006.01)

Patent

CA 1305697

22935-935 ABSTRACT OF THE DISCLOSURE SULPHURISED ALKALINE EARTH METAL HYDROCARBYL PHENATES, THEIR PRODUCTION AND USE THEREOF A process is provided for preparing additive concentrate suitable for incorporation into a finished lubricating oil composition, the additive concentrate comprising: (a) a lubricating oil, (b) a lubricating oil soluble sulphurised alkaline earth metal hydrocarbyl phenate modified by incorporation of from greater than 2 to 35% by weight based on the weight of the composition of either (i) at least one carboxylic acid having the formula:- Image wherein R is a C10 to C24 alkyl or alkenyl group and R1 is either hydrogen, a C1 to C4 alkyl group or a -CH2-COOH group, or an anhydride, acid chloride or ester thereof or (ii) a di- or polycarboxylic acid containing from 36 to 100 carbon atoms or an anhydride, acid chloride or ester thereof, the concentrate having a TBN greater than 300.

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