POLYURETHANE AND PROCESS FOR PRODUCING THE SAME

A cheap biodegradable polyurethane with excellent properties, having not only a glyceride but also molasses and/or a lignin material incorporated in molecular chains of polyurethane. In particular, there is provided a polyurethane characterized in that it is produced by polycondensation reaction of...

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Main Authors HIROSE, SHIGEO, ITOH, YOSHIYUKI, KAMAKURA, DAISUKE, HATAKEYAMA, HYOE, HAMAGUCHI, TAKASHI
Format Patent
LanguageEnglish
French
Japanese
Published 14.04.2005
Edition7
Subjects
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Summary:A cheap biodegradable polyurethane with excellent properties, having not only a glyceride but also molasses and/or a lignin material incorporated in molecular chains of polyurethane. In particular, there is provided a polyurethane characterized in that it is produced by polycondensation reaction of a polyol solution, the polyol solution containing not only a glyceride having at least two hydroxyls in its molecule but also molasses and/or a lignin material in dissolved form, with a polyisocyanate, and that providing that A refers to the weight of glyceride component and B to the weight of molasses component and/or lignin material component, the sum of A and B is in the range of 10 to 90% based on the total weight of polyurethane while the ratio of A to B (A/B) is in the range of 0.1 to 10. L'invention concerne un polyuréthanne biodégradable peu coûteux et ayant d'excellentes propriétés. Ce polyuréthanne a, incorporés dans ses chaînes moléculaires, non seulement un glycéride mais aussi des molasses et/ou une matière lignine. L'invention concerne notamment un poluyréthane caractérisé en ce qu'il est produit par la réaction de polycondensation d'une solution de polyol, la solution de polyol contenant non seulement un glycéride ayant au moins deux hyroxyles dans sa molécule et aussi des molasses et/ou une matière lignine sous forme dissoute, avec un polyisocyanate. A représente le poids du composé glycéride et B le poids du composé molasses et/ou du composé matière lignine, la somme de A et B étant de l'ordre de 10 à 90 % sur la base du poids total de poluyréthanne tandis que le rapport A/B est de l'ordre de 0,1 à 10.
Bibliography:Application Number: WO2004JP08239