Solid anti-friction devices – materials therefor – lubricant or se – Lubricants or separants for moving solid surfaces and... – Compound of indeterminate structure – prepared by reacting an...
Patent
1997-04-18
1998-08-11
Medley, Margaret
Solid anti-friction devices, materials therefor, lubricant or se
Lubricants or separants for moving solid surfaces and...
Compound of indeterminate structure, prepared by reacting an...
508398, 508460, C10M15922, C10M15920, C10M15924
Patent
active
057927359
ABSTRACT:
A lubricating oil composition suitable for use in low or medium speed diesel engines comprises a fuel oil with a residual oil content characterised in that the lubricating oil composition further comprises a hydrocarbyl-substituted phenate concentrate having a TBN greater than 300, and at least one of a hydrocarbyl-substituted salicylate and a hydrocarbyl-substitute sulphonate. The hydrocarbyl-substituted phenate is preferably one modified by incorporation of a carboxylic acid of the formula RCH(R.sub.1)CO.sub.2 H where R is a C.sub.10 -C.sub.24 alkyl group and R.sub.1 is hydrogen or a C.sub.1 to C.sub.4 alkyl group e.g. stearic acid.
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Cook Stephen James
Crawford John
O'Connor Sean Patrick
BP Chemicals (Additives) Limited
Medley Margaret
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