Rigid polyurethane foam and preparation method thereof
AssigneeCj Cheiljedang Corporation
InventorsSun Joo MOON, Da Eun KIM, Jeung Yil PARK, Sang Mok LEE, Min Ho JUNG, Young Ran KIM, Jung Min KIM, Jin Hwa CHANG
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Abstract
A rigid polyurethane foam which is a polymerization product of a composition including a concentrated acid hydrolytic lignin, a polyol, and an isocyanate, and a method of preparing the rigid polyurethane foam.
Claims19
A rigid polyurethane foam which is a polymerization product of a composition comprising a concentrated acid hydrolytic lignin, a polyol, and an isocyanate.
A method of preparing a rigid polyurethane foam, the method comprising reacting concentrated acid hydrolytic lignin, a polyol, and an isocyanate in the presence of a foam stabilizing agent, a catalyst, and a foaming agent.
Dependencies are inferred from the claim text.