Blown and stripped biorenewable oils
AssigneeCargill, Incorporated
InventorsTodd L. Kurth, Frank P. Lochel, Suzanne Stauduhar, Hassan Ali Tabatabaee
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Abstract
A method for producing a blown and stripped biorenewable oil is provided. The method may include the steps of (a) heating a biorenewable oil to at least 90° C.; (b) exposing an oxygen containing stream to the heated oil to produce a blown oil having a viscosity of at least 40 cSt at 40° C.; (c) adding a base metal catalyst to the blown oil; and (d) stripping the blown oil from step (c) until the stripped oil has an acid value of from about 1 mg KOH/g to about 20 mg KOH/g; wherein the stripped oil from step (d) has a flash point of at least 220° C.
Claims20
A method for producing a blown and stripped biorenewable oil, the method comprising the steps of:
- (a) heating a composition comprising biorenewable oil and a first catalyst to at least 90° C.;
- (b) exposing an oxygen containing stream to the heated composition from step (a) to produce a blown oil having a viscosity of at least 40 cSt at 40° C.;
- and
- (c) stripping the blown oil, in the presence of a second catalyst, to produce a stripped oil having an acid value of from about 1 mg KOH/g to about 20 mg KOH/g;
- wherein the first catalyst and the second catalyst are different.
Dependencies are inferred from the claim text.