Organophosphoryl borates and lubricants and aqueous fluids containing the same
OwnerJames J. Schwind, S.Q. Abbas Rizvi +1inventors
InventorsJames J. Schwind, S.Q. Abbas Rizvi, Stephen A. DiBiase
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Abstract
A borate ester represented by one of the following formulae: ((R1)2 P(X2)X1R2O)3 B or 1 wherein each R1 is independently hydrocarbyl, a hydrocarbyloxy or a hydrocarbylthio group or both R1 on the same phosphorus atom taken together form a heterocyclic group; each X1 and X2 is independently an oxygen or sulfur; and each R2 is independently a hydrocarbylene group. These reaction products are useful as lubricant additives for oil-based and water-based functional fluids. These materials act as anti-wear, extreme pressure and friction modifying agents.
Claims33
A borate ester represented by one of the following formulae:
- ((R1)2 P(X2)X1R2O)3 B
- or
- 5
- wherein each R1 is independently hydrogen, a hydrocarbyl, a hydrocarbyloxy or a hydrocarbylthio group or both R1 on the same phosphorus atom taken together form a heterocyclic group;
- each X1 and X2 is independently an oxygen or sulfur;
- and each R2 is independently a hydrocarbylene group, provided that at least one R1 is other than hydrogen.
A borate ester prepared by reacting (A) a hydroxy-containing organophosphorus compound with (B) a boron compound, wherein the mixture is substantially free of dihydroxy phosphorus-free alcohols and dihydroxy fatty carboxylic esters.
A lubricating or functional fluid composition, comprising:
- a major amount of oil of lubricating viscosity, (i) a borate ester prepared by reacting a hydroxy-containing organophosphorus compound with a boron compound, and (ii) at least one sulfurized organic composition or a dithiocarbamate-containing compound.
Dependencies are inferred from the claim text.