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Blown and stripped plant-based oils

  • US 8,895,766 B2
  • Filed: 11/08/2013
  • Issued: 11/25/2014
  • Est. Priority Date: 05/21/2010
  • Status: Active Grant
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;

    (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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