Blocked polyisocyanates containing phenolic groups

Details Blocked polyisocyanates containing phenolic groups Blocked polyisocyanates containing phenolic groups

C - Chemistry, Metallurgy

08

G

C08G 18/80 (2006.01) C08G 18/70 (2006.01)

Patent

CA 2394339

The present invention relates to novel blocked polyisocyanates that are soluble or dispersible in water and which contain phenolate anions in a chemically bound form as groups which provide their solubility or dispersibility. It also relates to a process for the preparation of these blocked polyisocyanates in the form of a solution or dispersion in water, optionally in the presence of coreactants, and to their use as hardeners in two-component lacquers, binders and/or adhesive formulations.

La présente invention concerne des polyisocyanates bloqués nouveaux solubles ou dispersibles dans l'eau et renfermant des anions phénolate dans une forme chimiquement liée représentant des groupes conservant leur solubilité ou dispersibilité. L'invention concerne également un procédé de préparation de ces polyisocyanates bloqués sous la forme d'une soultion ou d'une dispersion dans l'eau, éventuellement en présence de co-réactifs, ainsi que leur utilisation en tant qu'agents durcisseurs dans des vernis-laques, des liants et/ou des préparations d'adhésifs à deux composants.

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