TWI839801B

The present invention provides a polyisocyanate composition which is derived from at least one diisocyanate that is selected from the group consisting of aliphatic diisocyanates and alicyclic diisocyanates, and at least one polyester polyol that is selected from the group consisting of (A) bifunctio...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HIGASHI, MASATSUGU, TAKEI, AKIRA
Format:	Patent
Sprache:	chi
Schlagworte:	ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON CORRECTING FLUIDS DYES FILLING PASTES GENERAL PROCESSES OF COMPOUNDING INKS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF MATERIALS AS ADHESIVES USE OF MATERIALS THEREFOR WOODSTAINS WORKING-UP
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Beschreibung
Zusammenfassung:	The present invention provides a polyisocyanate composition which is derived from at least one diisocyanate that is selected from the group consisting of aliphatic diisocyanates and alicyclic diisocyanates, and at least one polyester polyol that is selected from the group consisting of (A) bifunctional polyester polyols having a number average molecular weight Mn of 500 or more and (B) tri- or higher functional polyester polyols having a number average molecular weight Mn of 500 or more, wherein: the molar ratio of the isocyanate groups in the diisocyanate to the hydroxy groups in the polyester polyol is 1.5 to 30.0; and the polyisocyanate composition has a weight average molecular weight of 1,400 to 800,000.