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US 9,868,811 B2Granted
Polyurethane biofoams derived from natural products and methods of making and using thereof
AssigneeInternational Park of Creativity
InventorsRaul Cuero Rengifo, Gabriela Melo Rodriguez
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Abstract
Described herein are polyurethane compositions based on natural materials, as well as methods for making and using the compositions. Also described herein are biofoams made from the polyurethane compositions. The biofoams described herein are resistant to degradation by acid and heat and are able to recover their original shapes after the application of pressure.
Claims19
A polyurethane composition produced by the process comprising
- a. admixing chitosan and a natural oil polyol in a solvent to produce a first admixture, wherein the chitosan is from 60% to 100% acetylated, and the natural oil polyol comprises a hydroxy fatty acid;
- and
- b. reacting the first admixture with a polyisocyanate to produce the polyurethane composition.
Dependencies are inferred from the claim text.