TWI848450B

TWI848450B

The present invention provides a polyisocyanate composition derived from at least one diisocyanate selected from the group consisting of aliphatic diisocyanates and alicyclic diisocyanates, a bifunctional polyol (A1) having a number-average molecular weight of 1,500 or higher, and a tri- or higher-f...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: HIGASHI, MASATSUGU, TAKEI, AKIRA
Format: Patent
Sprache:chi
Schlagworte:
ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE
ADHESIVES
CHEMISTRY
COMPOSITIONS BASED THEREON
DYES
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
POLISHES
THEIR PREPARATION OR CHEMICAL WORKING-UP
USE OF MATERIALS AS ADHESIVES
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Beschreibung
Zusammenfassung:The present invention provides a polyisocyanate composition derived from at least one diisocyanate selected from the group consisting of aliphatic diisocyanates and alicyclic diisocyanates, a bifunctional polyol (A1) having a number-average molecular weight of 1,500 or higher, and a tri- or higher-functional polyol (B1) having a number-average molecular weight of 500 or higher, the molar ratio of the isocyanate groups of the diisocyanate to the hydroxyl groups of the polyol (A1) and polyol (B1) being 2-30, the polyisocyanate composition having a weight-average molecular weight of 1,400 or higher. Also provided is a polyisocyanate composition derived from at least one diisocyanate selected from the group consisting of aliphatic diisocyanates and alicyclic diisocyanates, a polycaprolactone polyol (A2), and a polyether polyol (B2), the polyisocyanate composition containing poly(propylene glycol) in an amount of 20 parts by mass or more per 100 parts by mass of the polyether polyol (B2).