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US 4,648,985 AGranted
Extreme pressure additives for lubricants
AssigneeWhitmore Manufacturing, LLC
InventorsPaul W. Thorsell, Mark A. Mulvihill
Life of this patent
Estimating the term…
Abstract
Lubricant additives are provided which provide extreme pressure properties without the need for lead compositions. The extreme pressure additive system includes a dithio carbamate substituent, an organic copper substituent; and an phosphate substituent which are provided in a three component or two component system.
Claims21
An extreme pressure lubricant comprising a base and an extreme pressure additive system comprising:
- (a) an organic copper compound of the formula I ##STR19## where X is sulphur or oxygen, if X is sulphur, R is an amine;
- if X is oxygen, R is hydrogen or hydrocarbon having 1 to 22 carbon atoms;
- (b) a dithio carbamate of the formula II ##STR20## where R.sub.1 -R.sub.4 can be the same or different, and are selected from the group of hydrogen and hydrocarbon of 1 to 22 carbon atoms and R.sub.5 is a hydrocarbon having 1 to 8 carbon atoms;
- and
- (c) an organic phosphate of the formula III ##STR21## where X is sulphur or oxygen, n is 1-4, R.sub.1 and R.sub.2 are the same or different, and are selected from the group of hydrogen and hydrocarbon of 1 to 22 carbon atoms, and W is hydrogen, hydrocarbon, or amine of 1 to 22 carbon atoms, or a metal selected from the group consisting of the heavy metals, the light metals, the alkali metals and the alkaline earth metals;
- and whereby copper is provided by the extreme pressure additive system in a sufficient quantity and form to be accessible for copper plating under extreme pressure conditions and the extreme pressure additive system is sufficiently stable for usage and storage.
3 more elements
An extreme pressure lubricant comprising a base and an extreme pressure additive system comprising:
- (a) a copper carbamate compound of the formula I ##STR22## where R.sub.1 and R.sub.2 are the same or different and are selected from the group of hydrogen and hydrocarbon having from 1 to 22 carbon atoms;
- and
- (b) a phosphate of the formula II ##STR23## where X is sulphur or oxygen, n is 1-4, R.sub.1 and R.sub.2 are the same or different, and are selected from the group of hydrogen and hydrocarbon of 1 to 22 carbon atoms, and W is hydrogen, hydrocarbon, or amine of 1 to 22 carbon atoms, or a metal selected from the group consisting of the heavy metals, the light metals, the alkali metals and the alkaline earth metals;
- and whereby copper is provided by the extreme pressure additive system in a sufficient quantity and form to be accessible for copper plating under extreme pressure conditions and the extreme pressure additive system is sufficiently stable for usage and storage.
1 more element
An extreme pressure lubricant comprising a base and an extreme pressure additive system comprising:
- (a) a copper phosphate of the formula I ##STR24## where X=sulphur or oxygen, R.sub.1 and R.sub.2 are the same or different, and are selected from the group of hydrogen, alkyl or arene having from 1 to 22 carbon atoms;
- and
- (b) a dithocarbamate of the formula II ##STR25## where n is 1-4, R.sub.1 and R.sub.2 are the same or different and are selected from the group of hydrogen and hydrocarbon having 1 to 22 carbon atoms, and V is hydrogen, hydrocarbon or amine having 1 to 22 carbon atoms or a metal selected from the group consisting of the heavy metals, the light metals, the alkali metals or the alkaline earth metals;
- and whereby copper is provided by the extreme pressure additive system in a sufficient quantity and form to be accessible for copper plating under extreme pressure conditions and the extreme pressure additive system is sufficiently stable for usage and storage.
1 more element
Dependencies are inferred from the claim text.