Aqueous polyurethane dispersions and their use for preparing...

Details Aqueous polyurethane dispersions and their use for preparing... Aqueous polyurethane dispersions and their use for preparing...

C - Chemistry, Metallurgy

08

L

C08L 75/12 (2006.01) C08G 18/08 (2006.01) C08G 18/10 (2006.01) C08G 18/28 (2006.01) C08G 18/38 (2006.01) C08G 18/80 (2006.01) C09D 175/12 (2006.01)

Patent

CA 2211139

The present invention relates to aqueous dispersions of polyurethanes containing hydantoin groups (calculated as C3N2O2, MW 96) in an amount of 1 to 40% by weight, based on resin solids. The present invention also relates to the use of these dispersions for preparing coatings with excellent hydrolytic and thermal stability.

L'invention décrit des moyens de dispersion aqueuse de polyuréthanes comprenant des groupes d'hydantoine (exprimés en C3N202, MW 96) dans un ratio de 1à 40 % en poids, par rapport au poids des solides de la résine. L'invention a également trait à l'utilisation de ces moyens de dispersion pour préparer des produits enrobants ayant une excellente stabilité thermique et hydrolytique.

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