FOERFARANDE FOER FRAMSTAELLNING AV EN I FUKT HAERDANDE MED SILIKON AVSLUTAD POLYMER

摘要

The method comprises reacting a polyurethane prepolymer having terminal active hydrogen atoms with an isocyanato organosilane having a terminal isocyanate group and at least one hydrolyzable alkoxy group bonded to silicon. The moisture-curable polymer obtained by this method can advantageously be used in sealant compositions. The polymer presents a very rapid cure rate in the presence of moisture, and it is stable under unhydrous conditions.