Chevron Chemical Company LLC

Other

William W Willis, Jr

Jean-Louis Marie Le Coent

Jacques Cazin

Thierry Triconnet

Vernon R Small

Jean Louis Le Coent

John McDonald

Robert L Freerks

Torrey A Pennebaker

Dispersant detergent additives for lubricating oils prepared by neutralization, carboxylation, sulfurization-overalkalinization, carbonation, distillation, filtering and degassing from alkyl phenols containing 35-85% by weight of linear alkyl substituents. The process does not require, during the neutralizing phase, the presence of a third solvent, which, by forming an azeotropic mixture with water promote the elimination of water arising from the neutralizing reaction. The additives of the invention have improved stability to hydrolysis and improved dispersion properties, improved compatibility and improved foaming properties.

Detergent-dispersant additives for lubricating oils of the sulphurized and superalkalized alkaline earth alkylsalicylate-alkylphenate type

Detergent-dispersant additives for lubricating oils of the sulphurised

A lubricating oil composition for internal combustion engines giving improved soot dispersancy. That lubricating oil composition has a mixture of borated and carbonated polyalkylene succinimides derived from different molecular weight polyalkylenes. The molecular weight of the polyalkylenes from which the carbonated polyalkylene succinimide is derived is at least 300 greater than the molecular weight of the polyalkylenes from which the borated polyalkylene succinimide is derived.

Polyalkylene succinimide composition useful in internal combustion

Detergent-dispersant additives for lubricating oils of the sulfurized

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.

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Pinole, CA, United States of America

William W Willis, Jr