POLYURETHANE ADHESIVE FILM

There is provided a self-supporting adhesive film that includes a solid surface-deactivated isocyanate, and greater than 70 % by weight of a first isocyanate reactive polyurethane having a weight average Molecular Weight (Mw) of no greater than 90,000 and an enthalpy of fusion of at least 25 J/g, th...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	MAI, FELIX D, CARLSON, BRIAN W
Format:	Patent
Sprache:	eng ; fre
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 INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS USE OF MATERIALS AS ADHESIVES
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Beschreibung
Zusammenfassung:	There is provided a self-supporting adhesive film that includes a solid surface-deactivated isocyanate, and greater than 70 % by weight of a first isocyanate reactive polyurethane having a weight average Molecular Weight (Mw) of no greater than 90,000 and an enthalpy of fusion of at least 25 J/g, the first isocyanate reactive polyurethane comprising a blend of at least two different polyurethanes each having a Mw of no greater than 90,000 and an enthalpy of fusion of at least 25 J/g. Cette invention concerne un film adhésif mince autoportant qui contient un premier polyuréthanne et un isocyanate désactivé à surface solide.