AQUEOUS POLYURETHANE RESIN COMPOSITION AND POLYURETHANE FILM

An aqueous polyurethane resin composition including: an aqueous polyurethane resin which is a chain-extended product obtained from a neutralized product of an isocyanate-terminated prepolymer which is a reaction product of (A) a polyisocyanate, (B) polyols, and (C) a diol having a carboxy group and/...

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Bibliographische Detailangaben
Hauptverfasser:	TOCHIKAWA, Hirofumi, NISHINO, Masakazu, SUMITOMO, Hiroshi
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:	An aqueous polyurethane resin composition including: an aqueous polyurethane resin which is a chain-extended product obtained from a neutralized product of an isocyanate-terminated prepolymer which is a reaction product of (A) a polyisocyanate, (B) polyols, and (C) a diol having a carboxy group and/or a carboxylate group, by using (D) a polyamine having two or more amino groups and/or imino groups in one molecule, wherein (B) the polyols contain (b-1) a polypropylene glycol having a number average molecular weight of 600 to 10,000 and (b-2) a polytetramethylene glycol having a number average molecular weight of 1,000 to 4,000, a total amount of (b-1) the polypropylene glycol and (b-2) the polytetramethylene glycol accounts for 50% by mass or more of an entire amount of (B) the polyols, and a mass ratio between (b-1) the polypropylene glycol and (b-2) the polytetramethylene glycol is (b-1):(b-2)=0.5:99.5 to 60:40.