Alkaline earth metal hydrocarbyl phenates, their sulphurised...

Details Alkaline earth metal hydrocarbyl phenates, their sulphurised... Alkaline earth metal hydrocarbyl phenates, their sulphurised...

C - Chemistry, Metallurgy

10

M

253/107, 253/87

C10M 159/22 (2006.01)

Patent

CA 1305696

22935-934 ABSTRACT OF THE DISCLOSURE An additive concentrate suitable for incorporation into a finished lubricating oil composition, the additive concen- trate comprising: (a) a lubricating oil, (b) a lubricating oil soluble sulphurised or non- sulphurised alkaline earth metal hydrocarbyl phenate modified by incorporation of from greater than 2 to less than 40% by weight based on the weight of the concentrate of either (i) at least one carboxylic acid having the formula:- Image (I) wherein R is a C10 to C24 alkyl ox alkenyl group and R1 is either hydrogen, a C1 to C4 alkyl group or a -CH2-COOH group, or an an- hydride, acid chloride or ester thereof or (ii) a di- or polycar- boxylic 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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