Back to results
US 5,538,654 AGranted
Environmental friendly food grade lubricants from edible triglycerides containing FDA approved additives
AssigneeThe Lubrizol Corporation
InventorsSaurabh S. Lawate, Paul C. Naegely, Virginia A. Carrick
Life of this patent
Estimating the term…
Abstract
A food grade lubricant composition is described which is useful as hydraulic oil, gear oil, and compressor oil for equipment in the food service industry. This composition comprises (A) major amount of a genetically modified vegetable oil and (B) a minor amount of a performance additive. In other embodiments the composition contains either (C) a phosphorus compound or (D) a non-genetically modified vegetable oil.
Claims29
A lubricant composition, comprising;
- (A) a major amount of at least one genetically modified vegetable oil or synthetic triglyceride oil of the formula ##STR28## wherein R.sup.1, R.sup.2 and R.sup.3 are aliphatic groups that are at least 60 percent monounsaturated and further wherein an oleic acid moiety:linoleic acid moiety ratio is from 2 up to about 90, and the R.sup.1, R.sup.2 and R.sup.3 groups contain from about 7 to about 23 carbon atoms, and
- (B) a minor amount of at least one performance additive comprising
- (1) a phenol comprising
- (a) an alkyl phenol of the formula ##STR29## (b) a methylene bridged phenol of the formula ##STR30## wherein R.sup.4 and R.sup.5 are aliphatic groups that independently contain from 1 up to about 12 carbon atoms and R.sup.6 is hydrogen, an aliphatic or alkoxy group that contains from 1 up to about 12 carbon atoms, R.sup.7 is an aliphatic group that contains from 1 up to about 18 carbon atoms and a is an integer of from 0 to 3, or mixtures of the alkyl phenol and methylene bridged phenol;
- (2) an N-acyl derivative of sarcosine of the formula ##STR31## wherein R.sup.8 is an aliphatic group that contains from 1 up to about 24 carbon atoms;
- (3) a phosphorus amine salt of the formula ##STR32## wherein R.sup.9 and R.sup.10 are independently aliphatic groups containing from about 4 up to about 24 carbon atoms, R.sup.22 and R.sup.23 are independently hydrogen or aliphatic groups containing from about 1 up to about 18 aliphatic carbon atoms, the sum of m and n is 3 and X is oxygen or sulfur.
- (4) a partially esterified aliphatic ester of glycerol of the formula ##STR33## wherein R.sup.12 and R.sup.13 are aliphatic groups that contains from 7 up to about 23 carbon atoms;
- (5) a sorbitan ester ##STR34## wherein the sum of w, x, y and z is either zero or from 10-60 and R.sup.13 is an aliphatic group containing from 7 up to about 23 carbon atoms;
- (6) an aromatic amine of the formula ##STR35## wherein R.sup.14 is ##STR36## and R.sup.15 and R.sup.16 are independently a hydrogen or an alkyl group containing from 1 up to about 24 carbon atoms;
- or
- (7) an imidazoline of the formula ##STR37## wherein R.sup.17 is an aliphatic group containing from 1 up to about 24 carbon atoms and R.sup.18 is an alkylene group containing from 1 up to about 24 carbon atoms.
8 more elements
Dependencies are inferred from the claim text.