The Lubrizol Corporation

Other

Mahmud M Hussain

Peter Miatt

Paul E Adams

William D Abraham

Kurt F Wollenberg

Mariam Shamszad

A composition comprising an oil of lubricating viscosity and a compound represented by formula (I) wherein: Rand Rare each independently a hydrocarbyl group containing from about 4 to about 18 carbon atoms; p and q are each independently 0 or an integer from 1 to 3, and the sum of p and q is 1, 2, 3, 4, 5, or 6. The composition is effective at swelling seals. 

Seal swell agents for lubricating compositions

A composition comprising an oil of lubricating viscosity and a compound represented by formula (I) wherein: x is 0 or 1; Ris a hydrocarbyl group containing about 4 or about 18 carbon atoms; Ris an aliphatic hydrocarbyl group containing about 1 to about 12 carbon atoms; and y is 0 or 1, which composition is effective at swelling seals. 

A composition obtained by reacting an O,O'-dialkyldithiophosphoric acid with a hydroxyalkyl acrylate or a hydroxyalkyl methacrylate, and reacting the product thereof with a dialkylphosphite provides good antiwear protection.

Nitrogen-free phosphorus compounds and lubricants containing the same

The invention relates to a seal swell agent which is a substituted sulfonyldibenzene compound, and lubricating compositions containing the seal swell agent. The substituents on the benzene rings may be hydrocarbyl groups of 4 to 20 carbon atoms or alkylene groups of 1-2 carbon atoms with further functional groups.

A composition comprising an oil of lubricating viscosity and a compound represented by formula (I) wherein x is 0 or 1 and Ris a hydrocarbyl group containing about 4 to about 18 carbon atoms, which composition is effective at swelling seals. 

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Ann Arbor, MI, United States of America

Mahmud M Hussain