Bp Chemicals (additives) Limited

Lubrizol Adibis Holdings (uk) Limited

Lubrizol Adibis Holdings Limited

Bp Chemicals (additive) Limited

Stephen J Cook

Sean P O'Connor

Charles Cane

John Crawford

Andrew Pearce

Sean P O'Conner

Richard Leahy

An additive concentrate having a TBN greater than 300 suitable for incorporation into a finished lubricating oil composition comprising:

Highly overbased lubricating oil additive concentrates their preparation

A detergent concentrate composition suitable for incorporation into a finished lubricating oil comprises: (A) an additive concentrate comprising:

Detergent compositions

Lubricating oil compositions

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.

A detergent concentrate composition suitable for incorporation into a finished lubricating oil comprises:

A lubricating oil composition suitable for use in low- or medium-speed diesel engines comprising a fuel oil with a residual oil content characterised in that the lubricating oil composition further comprises a 'black paint' reducing amount of the product obtained by the reaction at elevated temperature of a hydrocarbyl-substituted succinic anhydride with either serine or an aminosalicylic acid.

An overbased metal salt of a hydrocarbyl-substituted sulphurised or non-sulphurised phenol, a calixarene having a substituent hydroxyl group or groups available for reaction with metal base or a linear phenol/formaldehyde resin wherein the metal moiety comprises a first metallic component which is at least one alkaline earth metal and a second metallic component which is at least one of either (i) at least one alkali metal or (ii) at least one metal selected from Groups IIIa, IVa, Va, VIa, VIIa and VIII of either the first or the second transition series of the Periodic Table of the Elements, the weight ratio of the first metal component to the second metal component being in the range from 1000:1 to 2:1.

Overbased metal salts, their preparation and use

An additive concentrate having a TBN greater than 300 suitable for incorporation into a finished lubricating oil comprises: (I) a lubricating oil soluble overbased alkaline earth metal hydrocarbyl salicylate modified by reaction to incorporate (a) an aldehyde, and (b) from 2 to 40% by weight, based on the weight of the concentrate, of either (i) at least one carboxylic acid having the formula: ##STR1## wherein R.sup.3 is a C.sub.10 to C.sub.24 alkyl or alkenyl group and R.sup.4 is either hydrogen, a C.sub.1 to C.sub.4 alkyl group or a CH.sub.2 COOH group, or an anhydride or ester thereof, or (ii) a di- or poly-carboxylic acid containing from 36 to 100 carbon atoms or an acid anhydride, acid chloride or ester thereof, and (II) a lubricating oil.

Alkaline earth metal hydrocarbyl salicylate concentrates, their

An additive concentrate composition having a TBN greater than 300 suitable for incorporation into a finished lubricating oil composition comprising:

Alkaline earth metal sulphurised hydrocarbyl phenate-containing additive

Lubricating oil additives

A process for producing a lubricating oil dispersant additive comprises: step (1) reacting compound (A), wherein compound (A) is a hydrocarbyl-substituted or a substituted hydrocarbyl-substituted succinic acid or anhydride or ester thereof, with compound (B) of formula (I)

Succinimide derivatives and processes for their preparation

Non-sulphurized overbased metal salts of sulphur-free calixarenes having a substituent hydroxyl group or groups available for reaction with metal base and their preparation are claimed. The salts are useful as additives to lubricating oils by reason of their acids neutralization capability, their detergent and their antioxidant properties.

Process for the production of overbased calixarates

A process for producing a lubricating oil dispersant additive comprises:

Bis-succinimide derivatives

Non-sulphurized overbased metal salts of sulphur-free calixarenes having a substituent hydroxyl group or groups available for reaction with metal base are claimed. The salts are useful as additives to lubricating oils by reason of their acids neutralization capability, their detergent and their antioxidant properties.

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North Humberside, United Kingdom

Stephen J Cook