Methods of making unsaturated modified vegetable oil-based polyols are described. Also described are methods of making oligomeric modified vegetable oil-based polyols. An oligomeric composition having a modified fatty acid triglyceride structure is also described. Also, methods of making a polyol including...http://www.google.es/patents/US7786239?utm_source=gb-gplus-sharePatente US7786239 - Modified vegetable oil-based polyols