HIGHLY REACTIVE a-AMINOMETHYL-ALKOXYSILANES HAVING IMPROVED STABILITY
申请人:Briehn Christoph
公开号:US20090227792A1
公开(公告)日:2009-09-10
α-aminoalkoxysilanes wherein the α-amino group is a tertiary amino group, and which also contains a further reactive group, display excellent reactivity of the alkoxy groups while remaining stable with respect to decomposition and byproduct formation, particularly through cleavage of the Si-C bond. The α-aminosilanes are particularly useful for preparing alkoxysilyl-terminated prepolymers which exhibit high cure rates in the presence of moisture, and for functionalizing particles reactive therewith.
Alkoxysilyl-terminated prepolymers in which the alkoxysilyl group is linked to a tertiary nitrogen group through a Cl carbon spacer exhibit excellent moisture curing reactivity and yet are easily prepared. The tertiary nitrogen group-containing α-aminoalkoxysilyl group is introduced into the prepolymer by reacting a tertiary nitrogen group-containing α-aminoalkoxysilane with an isocyanate-terminated prepolymer or isocyanate-functional precursor thereof.