| abstract |
The invention relates to polymer mixtures, containing alkoxysilane-terminated polymers (A) with terminal groups of general formula (1), -A-CH2-SiR1a(OR2)3-a and optionally tin catalysts comprising a maximum tin content of 100 ppm in relation to the polymer mixture. In said formula A represents a bivalent binding group selected from -O-, -S-, -(R3)N-, -O-CO-N(R?3)-, N(R3¿)-CO-O-, -N(R3)-CO-NH-, -NH-CO-N(R3)-, -N(R3)-CO-N(R3)-, R1 represents an optionally halogen-substituted alkyl, cycloalkyl, alkenyl or aryl group comprising 1-10 carbon atoms, R2 represents an alkyl group comprising 1-6 carbon atoms or an φ-oxaalkyl-alkyl group comprising a total of 2-10 carbon atoms, R3 represents hydrogen, an optionally halogen-substituted cyclic, linear or branched C¿1? to C18 alkyl or alkenyl group, or a C6 to C18 aryl group and a is a whole number between 0 and 2. Foamable mixtures, defined in claim 1, are excluded. |