Sulphurized alkaline earth metal hydrocarbyl phenates, their pro

Details Sulphurized alkaline earth metal hydrocarbyl phenates, their pro Sulphurized alkaline earth metal hydrocarbyl phenates, their pro

1997-12-16

2000-07-18

Johnson, Jerry D.

Solid anti-friction devices, materials therefor, lubricant or se

Lubricants or separants for moving solid surfaces and...

Organic -co- compound

508574, C10M15922

Patent

active

060907606

ABSTRACT:
An additive concentrate suitable for incorporation into a finished lubricating oil composition is disclosed. The additive concentrate comprises: (a) a lubricating oil; (b) a lubricating oil soluble sulphurized 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 formula (I), ##STR1## wherein R is C.sub.10 to C.sub.24 alkyl or alkenyl group and R.sup.1 is either hydrogen, a C.sub.1 to C.sub.4 alkyl group or a --CH.sub.2 --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 composition having a TBN greater than 300. A process for making the foregoing additive concentrate is disclosed. A finished lubricating oil composition containing the foregoing additive concentrate is also disclosed.

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