Carl F Stachew

US Patent:

6770605, Aug 3, 2004

Filed:

Sep 11, 2000

Appl. No.:

09/659132

Inventors:

Carl F. Stachew - Portage MI
Gordon D. Lamb - Mickleover, GB
William D. Abraham - South Euclid OH
Mary Galic Raguz - Mentor OH

Assignee:

The Lubrizol Corporation - Wickliffe OH

International Classification:

C10M13344

US Classification:

508291, 508292, 508293

Abstract:

A composition suitable for reducing sludge and degradation of elastomer seals in engines comprises an oil of lubrication viscosity and a minor amount of a sludge preventing/seal protecting nitrogen containing dispersant, which is a reaction product of a hydrocarbyl-substituted succinic acylating agent having a limited amount of low molecular weight substituent; and a polyamine or condensed polyamine containing less than 20 mole percent of polyamine components of 6 or fewer nitrogen atoms.

US Patent:

20030171225, Sep 11, 2003

Filed:

Mar 3, 2003

Appl. No.:

10/378313

Inventors:

Carl Stachew - Portage MI, US
Gordon Lamb - Berkshire, GB
William Abraham - South Euclid OH, US
Mary Raguz - Mentor OH, US

Assignee:

The Lubrizol Corporation - Wickliffe OH

International Classification:

C10M133/44

US Classification:

508/291000, 508/292000, 508/293000

Abstract:

A composition suitable for reducing sludge and degradation of elastomer seals in engines comprises an oil of lubrication viscosity and a minor amount of a sludge preventing/seal protecting nitrogen containing dispersant, which is a reaction product of a hydrocarbyl-substituted succinic acylating agent having a limited amount of low molecular weight substituent; and a polyamine or condensed polyamine containing less than 20 mole percent of polyamine components of 6 or fewer nitrogen atoms.

US Patent:

62076248, Mar 27, 2001

Filed:

Jul 13, 2000

Appl. No.:

9/616202

Inventors:

Carl F. Stachew - Wickliffe OH
William D. Abraham - South Euclid OH
James A. Supp - Parma OH
James R. Shanklin - Concord OH
Gordon David Lamb - Shaker Heights OH

Assignee:

The Lubrizol Corporation - Wickliffe OH

International Classification:

C10M141/02;141/06

US Classification:

508290

Abstract:

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.

US Patent:

61212113, Sep 19, 2000

Filed:

Jul 17, 1998

Appl. No.:

9/118280

Inventors:

Carl F. Stachew - Wickliffe OH
William D. Abraham - South Euclid OH
James A. Supp - Parma OH
James R. Shanklin - Concord OH
Gordon David Lamb - Shaker Heights OH

Assignee:

The Lubrizol Corporation - Wickliffe OH

International Classification:

C10M13518

US Classification:

508304

Abstract:

Disclosed is a lubricating composition having a major amount of an oil of lubrication viscosity and a minor amount of (A) at least one thiocarbamate wherein the improvement comprises adding to said thiocarbamate (B) a sludge preventing and seal protecting amount of at least one aldehyde or epoxide or mixtures thereof.

US Patent:

60109866, Jan 4, 2000

Filed:

Jul 31, 1998

Appl. No.:

9/127679

Inventors:

Carl F. Stachew - Wickliffe OH
James R. Shanklin - Concord OH

Assignee:

The Lubrizol Corporation - Wickliffe OH

International Classification:

C10M14102
C10M14112

US Classification:

508185

Abstract:

Disclosed is a composition for reducing the copper-lead bearing corrosion of a formulation that includes a major amount of an oil of lubrication viscosity and a minor amount of a corrosion-reducing additive comprising: (A) a dispersant with a total base number of from 20 to 160 on an oil-free basis, with the proviso that the dispersant is substantially boron-free; (B) a metal salt of a phosphorus acid; and (C) a metal overbased composition comprising at least one carboxylate, phenate, or sulfonate wherein the metal is lithium, sodium, potassium, magnesium or calcium, and wherein the improvement comprises (D) a borate ester.

US Patent:

60081651, Dec 28, 1999

Filed:

Jul 31, 1998

Appl. No.:

9/127471

Inventors:

James R. Shanklin - Concord OH
Carl F. Stachew - Wickliffe OH

Assignee:

The Lubrizol Corporation - Wickliffe OH

International Classification:

C10M14102
C10M14112

US Classification:

508185

Abstract:

1. A composition for reducing the copper-lead bearing corrosion of a formulation that includes a major amount of an oil of lubrication viscosity and a minor amount of a corrosion-reducing additive comprising (A) a borated dispersant with a total base number of from 20 to 160 on an oil-free basis; (B) a metal salt of a phosphorus acid; and (C) a metal overbased composition comprising at least one carboxylate, phenate, or sulfonate wherein the metal is lithium, sodium, potassium, magnesium or calcium, and wherein the improvement comprises (D) a borate ester. The borated ester and borated dispersant provide from 20 to about 800 parts per million (ppm) mass of boron in the composition.