Chevron Research Company

Warren Lowe

Thomas V Liston

Robert A Stayner

Vernon R Small

Brian R Kennedy

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

Disclosed is a novel composition formed from the reaction of (a) an alkylphenol; (b) sulfur; (c) an alkaline earth metal and (d) an olefin. The composition is useful as a lubricating oil additive and provides both oxidation and corrosion control.

Sulfurized alkylphenol-olefin reaction product lubricating oil additive

Disclosed is a lubricating oil additive composition which imparts improved oxidation properties to internal combustion engine crankcase lubricants which comprises:

Synergistic antioxidant lubricating oil additive composition

A lubricating oil additive composition which imparts improved oxidation properties to crankcase lubricants comprises an antioxidant selected from aromatic or alkyl sulfides and polysulfides, sulfurized olefins, sulfurized carboxylic acid esters and sulfurized ester-olefins, and a tertiary amine of the formula (R).sub.3 N wherein each R is independently C.sub.1 -C.sub.35 alkyl and at least one R contains at least 11 carbon atoms. Lubricating oil compositions containing this additive composition are also disclosed.

Lubricating oil additive composition

A lubricating oil additive composition which imparts improved oxidation properties to crankcase lubricants comprises an antioxidant selected from aromatic or alkyl sulfides and polysulfides, sulfurized olefins, sulfurized carboxylic acid esters and sulfurized ester-olefins, and a hydroxy amine of the formula: ##STR1## WHEREIN A and A' are C.sub.2 -C.sub.10 alkylene, R is C.sub.1 -C.sub.30 alkyl, Y is H, C.sub.1 -C.sub.6 alkyl of --A--OH, y is 0, 1 or 2, and x is 1 or 2. Lubricating oil compositions containing this additive composition are also disclosed.

Lubricating oil antioxidant additive composition

A lubricating oil additive composition which imparts improved oxidation properties to crankcase lubricants comprises a antioxidant selected from aromatic and alkyl sulfides and polysulfides, sulfurized olefins, sulfurized carboxylic acid esters and sulfurized ester-olefins, and a secondary amine of the formula: ##STR1## wherein R and R' are aliphatic radicals. Lubricating oil compositions containing this additive composition are also disclosed.

Disclosed is a lubricating oil additive composition which imparts improved oxidation properties to crankcase lubricants which comprises:

Antioxidant additive composition and lubricating oil containing same

Disclosed is a lubricating oil additive composition which imparts improved oxidation properties to crankcase lubricants which comprises: (1) an antioxidant selected from aromatic or alkyl sulfides and polysulfides, sulfurized olefins, sulfurized carboxylic acid esters and sulfurized ester-olefins, and (2) an oil-soluble quaternary ammonium halide. Lubricating oil compositions containing this additive composition are also disclosed.

Disclosed is a lubricating oil additive composition which imparts improved oxidation properties to crankcase lubricants which comprises: (1) an antioxidant selected from aromatic or alkyl sulfides and polysulfides, sulfurized olefins, sulfurized carboxylic acid esters and sulfurized ester-olefins, and (2) an oil-soluble iodo-containing hydrocarbon. Lubricating oil compositions containing this additive composition are also disclosed.

Disclosed is a water-rinsable soldering fluid comprising a mixture of a polyalkylene ether and a polyamide. The polyamide is formed from the reaction of a carboxylic acid and a polyalkylene polyamine.

Water-rinsable soldering fluid containing a polyamide dispersant

An anti-wear additive for lubricating compositions comprising (A) 1 part by weight of a sulfurized acid prepared by sulfurizing an acid of the formula R-COOH wherein R is C.sub.10 -C.sub.40 alkenyl, said sulfurized acid having a minimum sulfur content of 3% by weight and (B) 1-100 parts by weight of a phosphate of the formula ##STR1## wherein each of R.sup.2, R.sup.3, and R.sup.4 is independently a C.sub.6 -C.sub.20 aromatic or C.sub.1 -C.sub.20 aliphatic hydrocarbon group.

Antiwear additive and lubricating oil composition containing same

A lubricating oil additive composition which imparts improved oxidation properties to crankcase lubricants comprises an antioxidant selected from aromatic and alkyl sulfides and polysulfides, sulfurized olefins, sulfurized carboxylic acid esters and sulfurized ester-olefins, and a secondary amine of the formula: ##STR1## wherein R and R' are aliphatic radicals. Lubricating oil compositions containing this additive composition are also disclosed.

A lubricating oil additive composition which imparts improved oxidation properties to crankcase lubricants comprises an antioxidant selected from aromatic or alkyl sulfides and polysulfides, sulfurized olefins, sulfurized carboxylic acid esters and sulfurized ester-olefins, and a tertiary amine of the formula (R).sub.3 N wherein each R is independently C.sub.3 -C.sub.10 alkyl, phenyl or phenyl substituted by 1 or 2 alkyl groups of up to 12 carbon atoms. Lubricating oil compositions containing this additive composition are also disclosed.

A lubricating oil additive composition which imparts improved oxidaton properties to crankcase lubricants comprises an antioxidant selected from aromatic or alkyl sulfides and polysulfides, sulfurized olefins, sulfurized carboxylic acid esters and sulfurized ester-olefins, and a primary amine of the formula: ##STR1## wherein each A is independently hydrogen or alkyl, R is alkyl or alkenyl of at least 6 carbon atoms, R.sup.1 is an alkyl group of at least 2 carbon atoms, x is an integer from 2 to 4, y is 1 to 4, and Het forms with the N atom, a 5- or 6-membered heterocyclic ring optionally containing an additional N or O hetero atom. Lubricating oil compositions containing this additive composition are also disclosed. Zn dithiophosphates may, also, be used in the additive composition.

Growing community of inventors

El Cerrito, CA, United States of America

Warren Lowe