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US 7,501,479 B2Granted
Cationic polymerization of biological oils with superacid catalysts
AssigneePittsburg State University
InventorsMihail Ionescu, Zoran S. Petrovic
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Abstract
A method for the cationic polymerization of unsaturated biological oils (e.g., vegetable oils and animal oils) based on the cationic reaction of double bonds initiated by superacids is provided. The process occurs under very mild reaction conditions (about 70-110° C. and atmospheric pressure) and with short reaction times. The polymerized oils have a viscosity about 10 to 200 times higher than the initial oil and relatively high unsaturation (only about 10-30% lower than that of initial oils).
Claims22
A method for polymerizing a biological oil comprising
- obtaining at least one biological oil containing an unsaturated fatty acid ester;
- mixing the biological oil with a superacid catalyst having a pKa between about −3 and −25 to form an oil-catalyst reaction mixture;
- and
- maintaining the oil-catalyst reaction mixture at a temperature less than about 110° C. for a reaction period to form a polymerized biological oil.
1 more element
Dependencies are inferred from the claim text.