The Lubrizol Corporation

James A Supp

William D Abraham

John S Manka

Stephen H Roby

Brent R Dohner

James R Shanklin, Jr

Carl F Stachew

Gordon David Lamb

Craig D Tipton

Richard Yodice

Mohamed G Fahmy

Disclosed is a lubricating composition having a major amount of an oil of lubrication viscosity and a minor amount of (A) a nitrogen containing dispersant with a total base number of from 20 to 160 on an oil-free basis wherein the improvement comprises adding to said dispersant; (B) a sludge preventing/seal protecting additive of at least one aldehyde or epoxide or mixtures thereof.

Engine oil having dispersant and aldehyde/epoxide for improved seal performance, sludge and deposit performance

Disclosed is a lubricating composition having a major amount of an oil of lubrication viscosity and a minor amount of

Engine oil having dithiocarbamate and aldehyde/epoxide for improved seal

This invention relates to a composition, comprising:

Mixed polysulfides and lubricants and functional fluids containing the

This invention relates to a composition, comprising: (A) a metal, amine or ammonium salt of a compound represented by the formula ##STR1## wherein in Formula (A-I), X.sup.1, X.sup.2 and X.sup.3 and X.sup.4 are independently O or S, X.sup.1 and X.sup.2 can be NR.sup.3, a and b are independently zero or 1, and R.sup.1, R.sup.2 and R.sup.3 are independently hydrocarbyl groups and R.sup.3 can be hydrogen; and (B) a thiocarbamate represented by the formula

Additive compositions for lubricants and functional fluids

This invention relates to a lubricating composition comprising a major amount of an oil of lubricating viscosity and a minor amount of

Lubricants and functional fluids containing heterocyclic compounds

This invention relates to compositions for improving fuel efficiency in internal combustion engines. The composition comprises a lubricant having an oil of lubricating viscosity and (A) a compound represented by the formula ##STR1## wherein in Formula (A-I), R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently hydrocarbyl groups, X.sup.1 and X.sup.2 are independently O or S, and n is zero to 3; and (B) an acylated nitrogen-containing compound having a substituent of at least 10 aliphatic carbon atoms. In one embodiment, the inventive composition further comprises (C) a second phosphorus compound other than (A), said second phosphorus compound being a phosphorus acid, phosphorus acid ester, phosphorus acid salt, or derivative thereof. In one embodiment, the inventive composition further comprises (D) an alkali or alkaline earth metal salt of an organic sulfur acid, carboxylic acid or phenol. In one embodiment, the inventive composition further comprises (E) a thiocarbamate. These compositions are useful in providing lubricating compositions and functional fluids with enhanced fuel efficiency properties.

Oil composition for improving fuel economy in internal combustion engines

This invention relates to a composition, comprising: (AT) reaction products of compounds represented by the formula (A)and compounds selected to reduce the polysulfide components of (A); and ##STR1## wherein in Formula (A), R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently hydrocarbyl groups, X.sup.1 and X.sup.2 are independently O or S, and n is zero to 3 (B) an acylated nitrogen-containing compound having a substituent of at least 10 aliphatic carbon atoms. In one embodiment, the inventive composition further comprises (C) a second phosphorus compound other than (A), said second phosphorus compound being a phosphorus acid, phosphorus acid ester, phosphorus acid salt, or derivative thereof. In one embodiment, the inventive composition further comprises (D) an alkali or alkaline earth metal salt of an organic sulfur acid, carboxylic acid or phenol. In one embodiment, the inventive composition further comprises (E) a thiocarbamate In one embodiment the inventive composition further comprises (F), a non-phosphorous organodisulfide. These compositions are useful in providing lubricating compositions and functional fluids with enhanced antiwear properties.

Additive compositions having reduced sulfur contents for lubricants and

This invention relates to a composition, comprising: (A) a compound represented by the formula ##STR1## wherein in Formula (A-I), G.sup.1 and G.sup.2 are independently R, OR, SR or NRR wherein each R is independently a hydrocarbyl group, X.sup.1 and X.sup.2 are independently O or S, and n is zero to 3; and (B) an acylated nitrogen-containing compound having a substituent of at least 10 aliphatic carbon atoms. In one embodiment, the inventive composition further comprises (C) a phosphorus compound. In one embodiment, the inventive composition further comprises (D) an alkali or alkaline earth metal salt of an organic sulfur acid, carboxylic acid or phenol. In one embodiment, the inventive composition further comprises (E) a thiocarbamate. These compositions are useful in providing lubricating compositions and functional fluids with enhanced antiwear properties.

This invention relates to a low-viscosity lubricating oil and functional fluid compositions, comprising: a major amount of an oil having a kinematic viscosity of up to about 4 cST at 100.degree. C.; and a minor antiwear amount of

Low-viscosity lubricating oil and functional fluid compositions

This invention relates to a composition, comprising: (A) a compound represented by the formula ##STR1## wherein in Formula (A-I), R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently hydrocarbyl groups, X.sup.1 and X.sup.2 are independently O or S, and n is zero to 3; and (B) an acylated nitrogen-containing compound having a substituent of at least 10 aliphatic carbon atoms, In one embodiment, the inventive composition further comprises (C) a second phosphorus compound other than (A), said second phosphorus compound being a phosphorus acid, phosphorus acid ester, phosphorus acid salt, or derivative thereof, In one embodiment, the inventive composition further comprises (D) an alkali or alkaline earth metal salt of an organic sulfur acid, carboxytic acid or phenol. In one embodiment, the inventive composition further comprises (E) a thiocarbamate. These compositions are useful in providing lubricating compositions and functional fluids with enhanced antiwear properties.

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Parma, OH, United States of America

James A Supp