JPH05311146

PURPOSE:To provide the two-pack curable composition consisting of a main agent composed mainly of a polyurethane polyol and a curing agent composed mainly of a specific polyurethane polyisocyanate and having extremely excellent viscosity stability and solution stability during storage. CONSTITUTION:...

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Bibliographische Detailangaben
Hauptverfasser:	TOYAMA MITSUO, FUKAI MASAKI
Format:	Patent
Sprache:	eng
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:	PURPOSE:To provide the two-pack curable composition consisting of a main agent composed mainly of a polyurethane polyol and a curing agent composed mainly of a specific polyurethane polyisocyanate and having extremely excellent viscosity stability and solution stability during storage. CONSTITUTION:The composition is composed of (A) a main agent composed mainly of a polyurethane polyol and (B) a curing agent composed mainly of a polyurethane isocyanate produced by extending the chain of a polyurethane diisocyanate with a polyol having >=3 hydroxyl functional groups (preferably polytetramethylene ether glycol, etc., having a molecular weight of 300-3,000). The polyurethane diisocyanate is produced from a polyurethane diisocyanate having >=2 NCO functional groups and derived from a diol having two hydroxyl functional groups (preferably polyethylene adipate, etc., having a molecular weight of 300-10,000) and a diisocyanate having two NCO functional groups (preferably tolylene diisocyanate, etc.). Preferably, the viscosity ratio of the component A to the component B (cps/25 deg.C) is adjusted to 1:1 and the mixing ratio of A:B is selected to be 1:1.