Método para producir policarbonato diol, policarbonato diol, método para producir poliuretano y poliuretanos

To provide a polycarbonate diol for enhancing the reaction rate at the time of production of a polyurethane by a reaction of the polycarbonate diol with an isocyanate compound and enabling the obtained polyurethane to be improved in the tensile strength, elastic recovery ratio, etc. A dihydroxy comp...

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Bibliographische Detailangaben
Hauptverfasser:	IZAWA, Yusuke, NAKAGAWA, Yoko, YAMANAKA, Takayuki, KUSANO, Kazunao, KANAMORI, Yoshikazu, WAKABAYASHI, Kazuki
Format:	Patent
Sprache:	spa
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON CORRECTING FLUIDS DYES FILLING PASTES INKS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	To provide a polycarbonate diol for enhancing the reaction rate at the time of production of a polyurethane by a reaction of the polycarbonate diol with an isocyanate compound and enabling the obtained polyurethane to be improved in the tensile strength, elastic recovery ratio, etc. A dihydroxy compound and a carbonate compound are polymerized by a transesterification reaction in the presence of sugar and/or a derivative thereof to obtain the polycarbonate diol. The content of the sugar and/or derivative thereof is from 0.1 to 80 ppm by weight relative to the total of the sugar and/or derivative thereof and the dihydroxy compound.