Title: Alkaline earth metal hydrocarbyl phenates, their sulphurised derivates, their production and use thereof
Application Number: 87108239 Application Date: 1987.11.29
Publication Number: 1018941 Publication Date: 1988.06.15
Approval Pub. Date: 1992.11.04 Granted Pub. Date: 1992.11.04
International Classifi-cation: C10M129/95
Applicant(s) Name: BP Chemicals Ltd. Address:
Inventor(s) Name: Charles Cane;Jhon Crawford;Sean Patrick O
Attorney & Agent: XU RUXUN
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), wherein R is 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 composition having a TBN greater than 300.
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