Borated epoxyhydrocarbon-phenol sulfide product and lubricant and fuel compositions containing same
AssigneeMobil Oil Corporation
InventorAndrew G. Horodysky
Life of this patent
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Abstract
Reduction of friction between metal parts in contact, reductions in corrosion of copper and oxidation of lubricants are made possible by adding to lubricant or liquid fuel a minor amount of a product made by reacting an epoxyhydrocarbon, a phenol sulfide and a boron compound.
Claims18
A product made by reacting (1) a phenol sulfide of the formula ##STR3## wherein R.sup.4, R.sup.5, R.sup.6, R.sup.7 and R.sup.8 are hydrogen or the same or different hydrocarbyl groups containing 1 to 18 carbon atoms in any isomeric structural arrangement, and wherein with respect to R.sup.5, R.sup.6 and R.sup.7 the total number of carbon atoms represented thereby cannot be less than 4 if 1 or 2 of such members are hydrogen, n and m are 1 to 4 and may be the same or different and p is 0 to 4 with (2) an epoxyhydrocarbon of the formula ##STR4## wherein R, R.sup.1, R.sup.2 and R.sup.3 are hydrogen or C.sub.1 to C.sub.30 hydrocaryl groups, at least one of which is a hydrocarbyl group and (3) a boron compound selected from the group consisting of metaborates, boric acid, boric oxide and alkyl borates of the formula
- (RO).sub.x B(OH).sub.y
- wherein R is a C.sub.1 to C.sub.6 alkyl group, x is 1 to 3 and y is 0 to 2, their sum being 3, the reaction being carried out at from about 80.degree. C. to about 260.degree. C. using respective molar ratios of reactants of from about 1:1:1 to about 1:6:8.
A composition comprising a major proportion of a lubricant and a friction reducing amount of a product made by reacting (1) a phenol sulfide of the formula ##STR5## wherein R.sup.4, R.sup.5, R.sup.6, R.sup.7 and R.sup.8 are hydrogen of the same or different hydrocarbyl groups containing 1 to 18 carbon atoms in any isomeric structural arrangement, and wherein with respect to R.sup.5, R.sup.6 and R.sup.7 the total number of carbon atoms respresented thereby cannot be less than 4 if 1 or 2 of such members are hydrogen, n and m are 1 to 4 and may be the same or different and p is 0 to 4 with (2) an epoxyhydrocarbon of the formula ##STR6## wherein R, R.sup.1, R.sup.2 and R.sup.3 are hydrogen or C.sub.1 to C.sub.30 hydrocarbyl groups, at least one of which is a hydrocarbyl group and (3) a boron compound selected from the group consisting of metaborates, boric acid, boric oxide and alkyl borates of the formula
- (RO).sub.x B(0H).sub.y
- wherein R is a C.sub.1 to C.sub.6 alkyl group, x is 1 to 3 and y is 0 to 2, their sum being 3, the reaction being carried out at from about 80.degree. C. to about 260.degree. C. using respective molar ratios of reactants of from about 1:1:1 to about 1:6:8.
A method of reducing fuel consumption in an internal combustion engine by (1) lubricating said engine with a composition comprising a major proportion of a lubricating oil and a friction reducing amount of a product made by reacting (a) a phenol sulfide of the formula ##STR7## wherein R.sup.4, R.sup.5, R.sup.6, R.sup.7 and R.sup.8 are hydrogen or the same or different hydrocarbyl groups containing 1 to 18 carbon atoms in any isomeric structural arrangement, and wherein with respect to R.sup.5, R.sup.6 and R.sup.7 to total number of carbon atoms respresented thereby cannot be less than 4 if 1 or 2 of such members are hydrogen, n and m are 1 to 4 and may be the same or different and p is 0 to 4 with (b) an epoxyhydrocarbon of the formula ##STR8## wherein R, R.sup.1, R.sup.2 and R.sup.3 are hydrogen or C.sub.1 to C.sub.30 hydrocarbyl groups, at least one of which is a hydrocarbyl group and (c) a boron compound selected from the group consisting of metaborates, boric acid, boric oxide and alkyl borates of the formula
- (RO).sub.x B(OH).sub.y
- wherein R is a C.sub.1 to C.sub.6 alkyl group, x is 1 to 3 and y is 0 to 2, their sum being 3, the reaction being carried out at from about 80.degree. C. to about 260.degree. C. using respective molar ratios of reactants of from about 1:1:1 to about 1:6:8.
Dependencies are inferred from the claim text.