POLYCARBONATE POLYOL

PROBLEM TO BE SOLVED: To obtain a polycarbonate polyol having good fluidity even at a low temperatures and useful for sheets or the like by reacting diol(s) with a carbonate. SOLUTION: This polyol is obtained by reacting (A) one or more kinds selected from among dimer diols and alkylene oxide deriva...

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Bibliographische Detailangaben
Hauptverfasser:	TAKEI MITSUHIKO, ASAO YOSHIICHI
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To obtain a polycarbonate polyol having good fluidity even at a low temperatures and useful for sheets or the like by reacting diol(s) with a carbonate. SOLUTION: This polyol is obtained by reacting (A) one or more kinds selected from among dimer diols and alkylene oxide derivatives thereof and preferably (B) one or more kinds selected from 2-20C aliphatic diols and 6-10C alicyclic diols with (C) a carbonate preferably in the molar ratio C/(A+B) of 0.5-5. For obtaining this polyor, it is recommended, for example, that the diols are reacted with the carbonate in the presence of a titanium-based or tin-based catalyst at a temp. of 100-400 deg.C for 5-40 hr.