Patent ID: 8557754

Claim:
A composition of biodegradable gear oil comprising: i. a base oil stock containing a monoester of a non-edible vegetable oil fatty acid or mixture thereof, in the range of 95.5-99.5% by weight, wherein the monoester of non-edible vegetable oil fatty acid is selected from the group consisting of toluene derivative of epoxy ester of neem oil fatty acid, xylene alkylated epoxy ester of rice bran oil, toluene ester of mahua oil, toluene ester of rice bran oil, cumene or tetralin ester of non-edible vegetable oil and a mixture thereof, and ii. an additive pack in the range of 0.5-4.5% by weight, and wherein said additive pack comprises: a. at least one anti-oxidant selected from the group consisting of phenol, amines, gallate, tetrazole, and an anisole type of compound, in the range of 6.5-12.0% by weight, b. at least one extreme pressure additive selected from the group consisting of sulfide, selenide, phosphosulfide, and phosphoselenide in the range of 68.0-23.5% by weight, c. at least one pour point depressant cum anti-foaming agent selected from the group consisting of polymeric long chain acrylate, alcohol, ester, ether, and adipate type compounds in the range of 2.0-46.5% by weight, d. at least one corrosion inhibitor selected from the group consisting of triazole, gallate, polyols, amines, phenols and sulfonates in the range of 11.0-7.0% by weight and e. at least one detergent-dispersant selected from the group consisting of sulfonate, succinimides, and phosphonates in the range of 11.0-12.0% by weight.