MOISTURE-CURABLE POLYURETHANE HOT-MELT ADHESIVE

To provide a moisture-curable polyurethane hot-melt adhesive excellent in light resistance and good in thermal creep resistance, temporal stability, delamination resistance, abrasion resistance, and alcohol resistance.SOLUTION: The moisture-curable polyurethane hot-melt adhesive contains: a urethane...

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Bibliographische Detailangaben
Hauptverfasser:	SANADA AKIYOSHI, OKUIZUMI KANNA, SASAKI KAZUYA
Format:	Patent
Sprache:	eng ; jpn
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:	To provide a moisture-curable polyurethane hot-melt adhesive excellent in light resistance and good in thermal creep resistance, temporal stability, delamination resistance, abrasion resistance, and alcohol resistance.SOLUTION: The moisture-curable polyurethane hot-melt adhesive contains: a urethane prepolymer which is obtained by a reaction between a polyisocyanate component containing at least a modified aliphatic diisocyanate and a polyol component and has an isocyanate group at its terminal; and a crosslinking agent. The polyol component contains a trifunctional or higher polyfunctional polyol. The content of the trifunctional or higher polyfunctional polyol is 8 mass% or less in the polyol component. The crosslinking agent contains a non-aromatic isocyanate compound.SELECTED DRAWING: None 【課題】耐光性に優れ、耐熱クリープ性、経時安定性、耐層間剥離性、耐摩耗性、及び耐アルコール性が良好な湿気硬化型ポリウレタンホットメルト接着剤を提供する。【解決手段】少なくとも脂肪族ジイソシアネート変性体を含むポリイソシアネート成分とポリオール成分との反応から得られ、末端にイソシアネート基を有するウレタンプレポリマーと、架橋剤とを含む湿気硬化型ポリウレタンホットメルト接着剤であって、前記ポリオール成分が３官能以上の多官能ポリオールを含み、該３官能以上の多官能ポリオールの含有量を前記ポリオール成分中８質量％以下含み、前記架橋剤が非芳香族系イソシアネート化合物を含む湿気硬化型ポリウレタンホットメルト接着剤である【選択図】なし