PREPARATION OF PHENOL-BASED POLYOL AND PREPARATION OF POLYURETHANE RESIN AND POLYURETHANE FOAM

PREPARATION OF PHENOL-BASED POLYOL AND PREPARATION OF POLYURETHANE RESIN AND POLYURETHANE FOAM

PROBLEM TO BE SOLVED: To provide a method of preparing a phenol-based polyol having a high terminal primary hydroxyl rate without complicated post-reaction treatments and methods of preparing a polyurethane resin and a polyurethane foam using the same. SOLUTION: A method of preparing a phenol-based...

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Bibliographische Detailangaben
Hauptverfasser: TAKASAKI MICHIYA, IZUKAWA TSUKURU, KANEMATSU AKIHITO, SUZUKI KAZUO
Format: Patent
Sprache:eng
Schlagworte:
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
CHEMISTRY
COMPOSITIONS BASED THEREON
GENERAL PROCESSES OF COMPOUNDING
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
WORKING-UP
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a method of preparing a phenol-based polyol having a high terminal primary hydroxyl rate without complicated post-reaction treatments and methods of preparing a polyurethane resin and a polyurethane foam using the same. SOLUTION: A method of preparing a phenol-based polyol comprises adding an alkylene oxide to a phenol-based compound, wherein the phenol-based compound is reacted with 5-50 wt.% of the alkylene oxide, based on the phenol- based compound, containing at least 50 wt.% of an alkylene oxide having 3 or more carbon atoms at 80-150 deg.C in the presence of a basic catalyst and the resulting reactant is then reacted with 1.3-10 mols of ethylene oxide per mol of hydroxyl groups of the reactant.