Two part polyurethane sealant composition with low modulus and good paintability

A polyurethane sealant is the reaction product of a hydroxy-terminated toluenediisocyanate/polyoxyalkylene polyol prepolymer component, an isocyanate-terminated toluenediisocyanate/polyoxyalkylene polyol activator component, and at least one of a diphenylmethane diisocyanate prepolymer component and...

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Bibliographische Detailangaben
1. Verfasser:	MADAJ EDMUND J
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS DYES MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	A polyurethane sealant is the reaction product of a hydroxy-terminated toluenediisocyanate/polyoxyalkylene polyol prepolymer component, an isocyanate-terminated toluenediisocyanate/polyoxyalkylene polyol activator component, and at least one of a diphenylmethane diisocyanate prepolymer component and a diphenylmethane diisocyanate monomer component. A method for making a sealant including providing a base component containing a hydroxy-terminated toluenediisocyanate/polyoxyalkylene polyol prepolymer, an activator component containing an isocyanate-terminated toluenediisocyanate/polyoxyalkylene polyol, and a modifier component containing at least one of a diphenylmethane diisocyanate prepolymer and a diphenylmethane diisocyanate monomer, and combining the base component, activator component, and modifier component to form a polyurethane reaction product.