Blown and stripped plant-based oils
First Claim
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1. A method for producing a high viscosity, low volatiles blown stripped plant-based oil, the method comprising the steps of:
- (a) obtaining a plant-based oil;
(b) heating the oil to at least 90°
C.;
(c) passing air through the heated oil to produce a blown oil having a viscosity of at least 50 cSt at 40°
C.;
(d) stripping the blown oil from step (c) to reduce an acid value of the blown oil to from 5 mg KOH/g to about 9 mg KOH/g; and
(e) adding a polyol to the stripped oil from (d); and
(f) stripping the oil from step (e) to reduce the acid value of the oil to less than 5.0 mg KOH/g or less.
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Abstract
A method for producing a high viscosity, low volatiles blown stripped plant-based oil is provided. The method may include the steps of: (i) obtaining a plant-based oil; (ii) heating the oil to at least 90° C.; (iii) passing air through the heated oil to produce a blown oil having a viscosity of at least 50 cSt at 40° C.; (iv) stripping the blown oil from step (iii) to reduce an acid value of the blown oil to from 5 mg KOH/g to about 9 mg KOH/g; (v) adding a polyol to the stripped oil from (iv); and (vi) stripping the oil from step (v) to reduce the acid value of the oil to less than 5.0 mg KOH/g or less.
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Citations
21 Claims
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1. A method for producing a high viscosity, low volatiles blown stripped plant-based oil, the method comprising the steps of:
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(a) obtaining a plant-based oil; (b) heating the oil to at least 90°
C.;(c) passing air through the heated oil to produce a blown oil having a viscosity of at least 50 cSt at 40°
C.;(d) stripping the blown oil from step (c) to reduce an acid value of the blown oil to from 5 mg KOH/g to about 9 mg KOH/g; and (e) adding a polyol to the stripped oil from (d); and (f) stripping the oil from step (e) to reduce the acid value of the oil to less than 5.0 mg KOH/g or less. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for producing a high viscosity, low volatiles blown, stripped, corn stillage oil, the method comprising the steps of:
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(a) obtaining a corn stillage oil having an initial acid value of from about 12 mg KOH/gram to about 34 mg KOH/gram; (b) heating the oil to at least 90°
C.;(c) passing air through the heated to produce a blown-corn stillage oil; (d) stripping the blown-corn stillage oil to reduce the acid value of the blown-corn stillage oil from about 6 mg KOH/gram to about 9 mg KOH/gram; (e) adding a sufficient amount of glycerin to the stripped oil from (d) to obtain a molar ratio of hydroxyl groups from the added glycerin to the free fatty acids present in the oil from (d) of from about 1;
5 to less than 1;
1; and(f) stripping the oil from step (e) to produce a blown, stripped corn stillage oil having a hydroxyl number less than about 50 mg KOH/gram and a final acid value of 3.5 mg KOH/gram or less. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method for producing a high viscosity blown, stripped plant-based oil, the method comprising the steps of:
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(a) obtaining a plant-based oil; (b) heating the oil to at least 105°
C.;(c) passing air through the heated oil to produce a blown plant-based oil having a viscosity of at least 50 cSt at 40°
C.;(d) adding a polyol to blown plant-based oil from step (c); and (e) stripping the blown oil from step (d) to reduce an acid value of the blown oil to less than 5.0 mg KOH/gram. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification