Method for preparing bio-polyol, composition of polyurethane resin containing bio-polyol, and method for preparing polyurethane foam using the same
AssigneesHyundai Motor Company, Kia Corporation, Industry-Academic Cooperation Foundation Gyeongsang National University
InventorsJung Wook Lee, Jeong Seok Oh, Gyuri Kim, Seongrok Jeong, Sarbaranjan Paria
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Abstract
A method of preparing a bio-polyol using coffee by-products, a polyurethane resin composition containing the bio-polyol, and a method of preparing a polyurethane foam using the same are described. The method simplifies the complicated process of extracting polyols from coffee and thus extracts bio-polyols within a short time, thus being advantageous in terms of cost and time.
Claims16
A method of preparing a bio-polyol comprising:
- mixing coffee by-products including coffee grounds with a polyol solvent mixture;
- wherein the polyol solvent mixture comprises a polyol, glycerol, and an acid.
A method of preparing a polyurethane resin composition comprising:
- mixing coffee by-products including coffee grounds with a polyol solvent mixture to prepare a bio-polyol;
- mixing the bio-polyol with a first polyol, a second polyol, a cell opener, a surfactant, a catalyst, a chain extender, a crosslinking agent, and a blowing agent to prepare a polyol premix;
- mixing the polyol premix with isocyanate to prepare a polyurethane resin composition;
- and
- blowing the polyurethane resin composition.
Dependencies are inferred from the claim text.