Blown corn stillage oil
AssigneeCargill, Incorporated
InventorsMichael John Hora, Frank P. Lochel
Life of this patent
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Abstract
Blown corn stillage oils and methods for making blown corn stillage oils are disclosed. In one aspect the corn stillage oils are stripped to reduce the acid value of the resulting blown, stripped corn stillage oil. The method includes heating a corn stillage oil to a temperature of at least 90° C., and passing air through the heated oil to produce a blown corn stillage oil having a viscosity of at least 50 cSt at 40° C. In one aspect, the blown corn stillage oil is stripped to reduce the acid value of the blown, stripped corn stillage oil to 5 mg KOH/gram or less.
Claims23
1-30. (canceled)
A method for producing a high viscosity, low volatiles blown-corn stillage oil, the method comprising the steps of:
- (a) obtaining a pressure-distilled corn stillage oil;
- (b) heating the oil to at least 90° C.;
- (c) passing air through the heated oil to produce a blown-corn stillage oil;
- and
- (d) stripping the blown-corn stillage oil to reduce the acid value of the blown-corn stillage oil.
A method for producing a high viscosity, low volatiles blown-corn stillage oil, the method comprising the steps of:
- (a) obtaining a vacuum-distilled corn stillage oil;
- (b) heating the oil to at least 90° C.;
- (c) passing air through the heated oil to produce a blown-corn stillage oil;
- and
- (d) stripping the blown-corn stillage oil to reduce the acid value of the blown-corn stillage oil.
A method for producing a high viscosity, low volatiles blown-corn stillage oil, the method comprising the steps of:
- (a) obtaining a corn stillage oil;
- (b) heating the oil to at least 90° C.;
- (c) passing air through the heated oil to produce a blown-corn stillage oil having a viscosity of at least 50 cSt at 40° C.;
- and
- (d) stripping the blown-corn stillage oil to reduce the acid value of the blown-corn stillage oil.
Dependencies are inferred from the claim text.