Infineum International Limited

Exxon Chemical Patents, Inc.

Dean B Clarke

Jacob I Emert

Ricardo A Bloch

David J Martella

Anne Young

Sonia Oberoi

Jai G Bansal

Dale Robert Carroll

Anne W Young

Jacob Emert

Anne Wai-Yu Young

Carl Waterson

Richard A Bloch

A lubricant additive concentrate containing (i) dispersant that is the polybutenyl succinimide reaction product of a polyamine and polybutenyl succinic anhydride (PIBSA) derived from polybutene having a number average molecular weight (M) of from about 1300 to about 2500 daltons and a terminal vinylidene content of at least about 50% and maleic anhydride via an ene maleation process; (ii) overbased magnesium colloidal detergent having a total base number (TBN) of from about 300 to about 900 mg KOH/g; and (iii) organic friction modifier selected from hydroxyalkyl alkyl amines of Cto Chydrocarbons, at least one hydroxyalkyl alkyl ether amines of Cto Chydrocarbons, at least one alkyl ester amine derived from triethanol amine having a Cto Chydrocarbyl substituent, at least one non-basic, fatty acid amide, or a mixture thereof; wherein the combined mass % of dispersant (i) and overbased magnesium colloidal detergent (ii) in said concentrate is from about 15 to about 50 mass %: the mass ratio of (i):(ii) is from about 1:1 to about 6:1; and the concentrate contains from about 2 to about 10 mass % of organic friction modifier (iii); the remainder of the concentrate being composed of base oil and additives other than dispersant (i), overbased magnesium colloidal detergent (ii) and organic friction modifier (iii).

Additive concentrates for the formulation of lubricating oil compositions

A viscosity index (VI) improver concentrate containing at least one VI improver, from 0 to about 5 mass % of lubricating oil flow improver (LOFI) and diluent oil, wherein the diluent oil has a kvof at least about 3.0 cSt and a CCS at &#x2212;35&#xb0; C. of less than 3700 cPs, and wherein at least about 98 mass % of the concentrate is composed of VI improver, LOFI and diluent oil.

Viscosity index improver concentrates

A homogenous product is formed by heating at a temperature in the range of from 50.degree. to 150.degree. C. a mixture of a benzotriazole and a 2,5-dihydrocarbyldithio-1,3,4-thiadiazole.

Method of solubilizing a benzotriazole with a thiadiazole

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Neshanic Station, NJ, United States of America

Dean B Clarke