Polyurethane foams from novel soy-based polyols

Polyurethane Foams from Novel Soy-based PolyolsPolyurethane foams and molded plastic films were prepared by reacting isocyanates with polyols containing 50% of vegetable oil-based polyols and 50% of petroleum-based polyols.The vegetable oil-based polyols included epoxidized soybean oil, epoxidized soybean oil reacted with acetol, commercial soybean oil polyols (soyols), polyols derived from epoxidized soybean oil and diglycerides, etc.The petroleum-based polyols were Voranol® 490 for rigid foams and Voranol® 4701 for flexible foams in the B-