Patent
Process for preparing overbased zinc phosphorodithioates
TLDR
In this paper, over-based zinc diorganophosphorodithioates are prepared from a DPG and basic zinc compound in the presence of isopropyl alcohol.Abstract:
Overbased zinc diorganophosphorodithioates are prepared from a diorganophosphorodithioic acid and basic zinc compound in the presence of isopropyl alcohol. The reaction products obtained are used as additives for lubricating oils to impart useful properties thereto.read more
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Patent
Lower-ash lubricating oil having ultra-neutral zinc dialkyldithiophosphates
TL;DR: In this article, a zinc dialkyldithiophosphate having a zinc to phosphorus weight ratio in the range of from 0.95:1 to 1.04:1 was used as a base oil.
Patent
Lubricant and fuel compositions containing an organo-substituted diphenyl sulfide
TL;DR: In this paper, a combination of an organo, ring-substituted diphenyl sulfide, e.g., a monoalkyldiphenyl sulphide, and a succinic dispersant component is presented.
Patent
Manufacture of dihydrocarbyl dithiophosphates
TL;DR: In this paper, an alcohol and/or a carboxylic acid or carboxylate is used to reduce the proportion of sediment obtained in the manufacture of a metal or ammonium dihydrocarbyl dithiophosphate, for use as an antiwear agent/antioxidant in crankcase lubricating oils.
Patent
Basic metal dihydrocarbylphosphorodithioates
Richard Yodice,Alan C. Clark +1 more
TL;DR: In this article, basic metal dihydrocarbylphosphorodithioates and phosphoromonothioates are prepared by employing a catalytic amount of an alkali metal or alkaline earth metal hydroxide or mixtures thereof.