aqueous polyurethane-urea based on bis- (4-isocyanatocyclohexyl) -methane enriched in the trans, trans and coatings and films prepared from the same isomer.

摘要

WITH UREA aqueous dispersions based polyurethane bis (4ISOCIANATOCICLOHEXILO) -methane Enriched trans, trans isomer and coatings or films prepared therefrom. The present invention is directed to aqueous dispersions UREA polyurethane ureas where polyurethane are based on the reaction product of A) an isocyanate component composite comprising bis- (4ISOCIANATOCICLOHEXILO) -methane having an average CONTENT TRANS, TRANS -isomer of at least 35% by weight, based on the weight bis (4-ISOCIANATOCICLOHEXILO) -methane with b) a component of reaction with isocyanate. The present invention is also directed to films or coatings prepared from these aqueous dispersions of urea and polyurethane.