Sika Technology Ag

Zhiyong Song

Michael Schlumpf

A moisture-curable composition, including: a) at least one polyurethane polymer P having isocyanate groups; b) at least one blocked polyamine BA having blocked, hydrolytically activatable amino groups; and c) at least one monoamine MA of formula (V), where Rrepresents a linear, cyclic, or branched alkyl or alkenyl radical or optionally substituted aryl radical with 1 to 12 C atoms and optionally including ether oxygen atoms; Rand Reither independently represent a rest Ror a hydrogen atom, where at least one of Rand Ris a hydrogen atom, or Rand Rtogether with the N atom of monoamine MA form an aldimine group that under influence of water hydrolyzes to a aldehyde and an amine R—NH; wherein polymer P is the reaction product of 2,4- and/or 2,6-toluylene diisocyanate (TDI) and at least one polyol, wherein the polyol has an average functionality of >2.

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Suzhou, China

Zhiyong Song