Liquid ashless antioxidant additive for lubricating compositions
AssigneeVanderbilt Chemicals, LLC
InventorsJUNBING YAO, VINCENT GATTO
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Abstract
A lubricating composition comprising at least 90% by weight of a base oil, and an antioxidant composition comprising the components, set forth as weight % of the lubricating composition: (1) solid alkylated-phenyl-alpha-naphthylamine at 0.01-0.3%, (2) an alkylated diphenylamine derivative of triazole, tolutriazole or benzotriazole, at 0.01-0.3%, and (3) methylenebis(di-n-butyldithiocarbamate), at 0.01-0.4%.
Claims14
A liquid antioxidant composition for lubricating oils, formed by blending the following components:
- (1) solid alkylated-phenyl-α-naphthylamine,
- (2) an alkylated diphenylamine derivative of triazole, tolutriazole or benzotriazole, and
- (3) methylenebis(di-n-butyldithiocarbamate),
- wherein each component is blended at the following weight ratios (1):(2):(3) being about 1-13:1-13:1-13.
A lubricating composition comprising at least 90% by weight of a lubricant base, and a liquid antioxidant composition comprising the components, set forth as weight % of the lubricating composition:
- (1) solid alkylated-phenyl-α-naphthylamine at 0.01-1.0%,
- (2) an alkylated diphenylamine derivative of triazole, tolutriazole or benzotriazole, at 0.01-0.50%, and
- (3) methylenebis(di-n-butyldithiocarbamate), at 0.01-1.0%.
Dependencies are inferred from the claim text.