Process for preparing lithium soap greases containing borate salt with high dropping point
AssigneeExxon Research & Engineering Co.
InventorJames F. Stadler
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Abstract
This invention relates to a process of preparing a high dropping point grease comprising a combination of a selected lithium soap of hydroxy fatty acid and a lithium salt of boric acid wherein said lithium salt of boric acid is formed in situ in the presence of an additive amount of selected water soluble polyhydroxy compound.
Claims10
In a process of preparing a lithium soap grease composition of high dropping point comprising a major portion of lubricating oil and a thickener system whose essential components include a lithium soap of C.sub.12 to C.sub.24 hydroxy fatty acid and a lithium salt of boric acid the improvement wherein the lithium salt of boric acid is formed in situ in the presence of an effective additive amount of water soluble polyhydroxy alcohol or phenol.
Dependencies are inferred from the claim text.