SYNTHESIS OF POLYURETHANE POLYMERS VIA COPPER AZIDE-ALKYNE CLICK CHEMISTRY FOR COATINGS, ADHESIVES, SEALANTS AND ELASTOMER APPLICATIONS

摘要

The present application is directed at the reaction product of an azide compound having two or more azide groups attached thereto and an alkyne compound having two or more alkyne groups attached thereto, wherein the azide and alkyne groups react in a 1,3-dipolar cyclo addition to form 1,4-disubstituted triazols and wherein the azide or alkyne compound or both comprise -O-(C=O)-NR- functional groups. The inventive reaction products are suitable as a replacement for conventional polyurethane-based sealing, coating and adhesive materials and provide the benefits, that the final cross-linking reaction proceeds in the absence of isocyanates leading to significantly lower exposition risks than the conventional polyisocyanate-based materials. The present application further relates to the use of these reaction products as coatings, preferably for flat roofs, sealants, adhesives and in elastomer applications. Furthermore, the present application relates to methods for producing the reaction products as well as substrates comprising a coating of said reaction product.