Fast-curing composition containing silane groups

A polymer formulation comprising at least one silane-functional polymer having at least one end group of the formula (I)

• where
• R1a, R1b, R1c and R1d are each independently a hydrogen atom or a monovalent hydrocarbyl radical having 1 to 12 carbon atoms, or in pairs are each an alkylene radical having 2 to 6 carbon atoms,
• R2 is a hydrogen atom or a monovalent hydrocarbyl radical which has 1 to 12 carbon atoms and optionally contains ether groups, ester groups, nitrile groups, amino groups or silane groups,
• R3 is a linear or branched alkylene or cycloalkylene radical having 1 to 20 carbon atoms, optionally having aromatic components, and optionally having one or more heteroatoms,
• R4 is an alkyl radical having 1 to 8 carbon atoms,
• R5 is an alkyl radical which has 1 to 10 carbon atoms and optionally contains ether groups,
• x is 0 or 1 or 2,
• m is 0 or 1, and
• n is 0 or 1 or 2 or 3 or 4 or 5, where n, if m is 1, is 1 or 2 or 3 or 4;
• and at least one further silane end group that does not correspond to the formula (I).