Evonik Degussa Gmbh

Evonik Operations Gmbh

Jan Pfingsten

Emmanouil Spyrou

Wiebke Stache

Iris Brückner

Annegret Lilienthal

Ralf Klawikowski

Judith Schoder

Tobias Unkelhäusser

Crosslinkers based on alkoxysilanes and alkoxysilane mixtures containing an isocyanate group can be used as a starting component in the production of coating compositions or as paint binder component, or can be used with adhesive o sealant binders o binder components having g ups reactive toward alkoxysilane groups.

Low-viscosity crosslinkers containing alkoxysilane groups

The present invention relates to alkoxysilane-functionalized allophanates, to methods for production thereof, and to the use thereof. In particular, the alkoxysilane-functionalized allophanate includes the reaction product of A) at least one alkoxysilane group-containing monourethane A) of the formula 1R(OR)Si&#x2014;R&#x2014;NH&#x2014;(C&#x2550;O)&#x2014;OR&#x2003;&#x2003;formula 1,where R, R, Rand Rare each independently hydrocarbyl radicals having 1-8 carbon atoms, which may be linear, branched or cyclic, or else may be integrated together to form a cyclic system, and n is 0-2, and B) at least one diisocyanate B), in a molar ratio of A) to B) of 3:1 to 1.5:1.

Alkoxysilane-functionalized allophanates

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Castrop-Rauxel, Germany

Jan Pfingsten