Chevron Research Company

Chevron Research & Technology Company

Chevron Chemical Company LLC

Vernon R Small

Thomas V Liston

Anatoli Onopchenko

Warren Lowe

William W Willis, Jr

Jean Louis Le Coent

Jean-Louis Marie Le Coent

Elaine S Yamaguchi

Christopher G Salentine

John McDonald

Melanie F Tobias

Ita Suharti Suwandi

Gerrit J Polhaar

Torrey A Pennebaker

William Woodford Willis, Jr

Non-thixotropic, sodium-free lubricant additive having from 10% to 50% of a liquid organic diluent and from 30% to 90% of a substituted hydrocarbaryl metal salt. At least 30 mole percent of the metal in the metal salt is lithium, and the salt is essentially free of sodium. The BN of the non-thixotropic lubricant additive attributable to the lithium is less than 150. This additive is useful for decreasing black sludge deposits and piston deposits.

Detergent containing lithium metal having improved dispersancy and deposit control

Processes for preparing normal and overbased metal sulfurized alkylphenates. The processes am characterized by a sulfurization reaction using a lower carboxylic acid catalyst which does not use a polyol promoter, e.g., ethylene glycol. The process affords a metal sulfurized phenate product which is essentially free of polyol oxidation products. The products are useful as additives for lubricating oils.

Methods for preparing normal and overbased phenates

Processes for preparing normal and overbased calcium sulfurized alkylphenates. The processes are characterized by a sulfurization reaction using a lower carboxylic acid catalyst which does not use a polyol promoter, e.g., ethylene glycol. The process affords a calcium sulfurized phenate product which is essentially free of polyol oxidation products. The products are useful as additives for lubricating oils.

Disclosed are lubricating oil compositions for use in 2-cycle railroad diesel engines having silver surfaced engine parts, which composition comprises an effective amount of a silver wear inhibiting compound. A method for inhibiting wear of silver-surfaced parts in railroad engines and a drive train of a two-cycle railroad diesel engine comprising silver wrist-pin bearings and the lubricating oil composition comprising the wear-inhibitor are also disclosed.

Lubricating oil compositions for railroad diesel engines

Borated alkyl catechols can be stabilized by the addition of certain defined dialkylamines. Lubricating oils containing a borated alkyl catecholdialkylamine complex are effective in reducing oxidation, wear and deposits in an internal combustion engine.

Dialkylamine complexes of borated alkyl catechols and lubricating oil

Borated alkyl catechols having a 3:2 mole ratio of catechol to boron can be stabilized by the addition of certain defined trialkylamines. Lubricating oils containing a 3:2 borated alkyl catechol-trialkylamine complex are effective in reducing oxidation, wear and deposits in an internal combustion engine.

Trialkylamine complexes of certain borated alkyl catechols and

Lubricating oils containing a borated alkyl catechol-dialkylamine complex are effective in reducing oxidation, wear and deposits in an internal combustion engine.

Dialkylamine complexes of borated higher carbon number alkyl catechols

Borated alkyl catechols can be stabilized by the addition of certain defined monoalkylamines. Lubricating oils containing a borated alkyl catechol-monoalkylamine complex are effective in reducing oxidation, wear and deposits in an internal combustion engine.

Monoalkylamine complexes of borated higher carbon number alkyl catechols

Borated alkyl catechols having a 3:2 mole ratio of alkyl catechol to boron can be stabilized by the addition of certain defined trialkylamines. Lubricating oils containing a 3:2 borated alkyl catechol-trialkylamine complex are effective in reducing oxidation, wear and deposits in an internal combustion engine.

Trialkylamine complexes of borated higher carbon number alkyl catechols

Borated alkyl catechols can be stabilized by the addition of certain defined monoalkylamines. Lubricating oils containing a borated alkyl catecholmonoalkylamine complex are effective in reducing oxidation, wear and deposits in an internal combustion engine.

Monoalkylamine complexes of borated alkyl catechols and lubricating oil

Lubricating oils containing a borated alkyl catechol-diethylamine complex are effective in reducing oxidation, wear and deposits in an internal combustion engine.

Diethylamine complexes of borated alkyl catechols and lubricating oil

Borated alkyl catechols can be stabilized by the addition of diethylamine. Lubricating oils containing a borated alkyl catecholdiethylamine complex are effective in reducing oxidation, wear and deposits in an internal combustion engine.

This invention relates to normally liquid lubricating oil additives which provide both antioxidant and friction-modifying properties when added to lubricating oil. In particular, this invention relates to C.sub.18 to C.sub.24 alkyl catechol lubricating oil additives which are normally liquid at typical storage temperatures.

Normally liquid C.sub.18 to C.sub.24 monoalkyl catechols

This invention relates to normally liquid lubricating oil additives which provide both anti-oxidant and friction-modifying properties when added to lubricating oil. In particular, this invention relates to C.sub.14 to C.sub.18 alkyl catechol lubricating oil additives which are normally liquid at typical storage temperatures.

Normally liquid C.sub.14 to C.sub.18 monoalkyl catechols

Lubricating oils containing borated long-chain 1,2-alkane diols have been found to reduce fuel consumption in an internal combustion engine.

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Rodeo, CA, United States of America

Vernon R Small