| abstract |
(57) [Problem] To provide a one-component moisture-curable polyurethane composition which has excellent adhesion to glass, resin, metal, etc. without using a primer, and has good elongation, curability and foaming resistance. A reaction product of (A) a urethane prepolymer, (B) a polyol having a molecular weight of 500 or less and a polyol having a molecular weight of 500 or less and a diisocyanate, wherein three or more N A silane compound (B-) which is an adduct of a polyisocyanate compound having a CO group and a secondary aminoalkoxysilane 1) and an adduct (B-2) of a lysine skeleton polyisocyanate compound with a secondary aminoalkoxysilane, A one-pack moisture-curable polyurethane composition containing at least one silane compound having an NCO group of 1.5 or more on average and a hydrolyzable alkoxy group of 1.5 or more on average. Further, it may contain an alkenyl group-containing silane compound represented by (R a O) n R b 3-n Si ─R c . |