Diol phosphite adducts of olefins as multifunctional lubricants and additives for lubricants
AssigneeMobil Oil Corporation
InventorsLinda A. Benjamin, Andrew G. Horodysky, Derek A. Law, Shi-Ming Wu
Life of this patent
Estimating the term…
Abstract
Cyclic diol- and diol-ester phosphite adducts of olefins and polymeric olefins provide superior multifunctional and lubricating fluid media with internal synergistic multifunctional antiwear, antioxidant properties and extreme pressure/antiwear additives for both mineral and synthetic lubricating oils as well as liquid hydrocarbon fuels.
Claims19
An improved lubricant composition comprising a major proportion of an oil of lubricating viscosity or a grease prepared therefrom and a minor multifunctional antiwear, antioxidant, extreme pressure amount of olefin-phosphate adduct reaction products of (a) olefins or oligomers thereof having at least one free olefinic group and (b) aliphatic diol-derived phosphites having the following generalized structure:
- ##STR6## where R is an alkyl group of 1 to 12 carbon atoms, phenyl, or aralkyl and R optionally contains oxygen, sulfur or nitrogen or mixtures thereof.
An improved lubricant composition having multifunctional antioxidant/antiwear/extreme pressure characteristics comprising from about 0 to about 50 wt.% of an oil of lubricating viscosity or a grease prepared therefrom and from about 50 to about 100 wt% of a product of reaction between (a) olefins selected from the group consisting of C.sub.2 to about C.sub.80 hydrocarbyl alpha and internal olefins, or oligomers thereof having at least one free olefinic group and (b) aliphatic diol-derived phosphites having the following generalized structure:
- ##STR7## where R is an alkyl group of 1 to 12 carbon atoms, phenyl, or aralkyl and R optionally contains oxygen, sulfur or nitrogen or mixtures thereof.
A product of reaction made by reacting (a) C.sub.2 to about C.sub.80 hydrocarbyl alpha or internal olefin having at least one free olefinic group and (b) diol-derived phosphite having the following generalized structure:
- ##STR8## where R is an alkyl group of 1 to 12 carbon atoms, phenyl, or aralkyl and R optionally contains oxygen, sulfur or nitrogen or mixtures thereof and wherein (a) and (b) are reacted in a molar ratio of olefin to phosphite of from about 6:1 to about 1:6 at reaction temperatures varying from about 80.degree. to about 225.degree. C.
An improved lubricant composition comprising a major proportion of an oil of lubricating viscosity or a grease prepared therefrom and a minor multifunctional antiwear, antioxidant, extreme pressure amount of olefin-phosphite adduct reaction products of (a) olefins or oligomers thereof having at least one free olefinic group and (9) a mixture of diol-derived phosphites wherein said olefin-phosphite adduct is derived from the reaction of a C.sub.2 to about C.sub.60 olefin reactant, and said mixture of diol-derived phosphites are derived from a mixture of C.sub.4 to about C.sub.20 diols.
A product of reaction made by reacting (a) C.sub.2 to about C.sub.80 hydrocarbyl alpha or internal olefin having at least one free olefinic group and (b) a mixture of 1,2-hexadecane diol phosphite and 1,2-octadecane diol phosphite wherein (a) and (b) are reacted in a molar ratio of olefin to phosphite of from about 6:1 to about 1:6 at reaction temperatures varying from about 80.degree. to about 225.degree. C.
Dependencies are inferred from the claim text.