Richard Yodice - Mentor OH, US John J. Johnson - Euclid OH, US Ross L. Beebe - Mentor OH, US Anthony J. Brzytwa - North Royalton OH, US
Assignee:
The Lubrizol Corproation - Wickliffe OH
International Classification:
C07C 329/00
US Classification:
558243
Abstract:
The present invention provides a low cost technique for synthesizing substituted trithiocarbonates and derivates thereof, by a one-step process which does not require solvent washes or re-crystallization steps, and results in practical yields more than double that of processes disclosed in the prior art.
Lubricating Compositions, Concentrates, And Greases Containing The Combination Of An Organic Polysulfide And An Overbased Composition Or A Phosphorus Or Boron Compound
This invention relates to a lubricating composition comprising a major amount of an oil of lubricating viscosity, (A) at least one organic polysulfide comprising at least about 90% dihydrocarbyl trisulfide, from about 0. 1% up to about 8% dihydrocarbyl disulfide, and less than about 5% dihydrocarbyl higher polysulfides, and (B) at least one overbased metal composition, at least one phosphorus or boron compound, or mixtures of two or more thereof. The invention also relates to concentrates and greases containing the above combination. The invention also relates to methods of making the organic polysulfide.
Linda Girard, Bruno Serafinowicz, Margaret Zupo, Anastasia Beaverhausen, Beverly Ettinger, Darlene Lusko, Paulina Nesteruk, Roy Londry, Julia Mills, Louise Archambault, Edward Carter