Concentrate suitable for the preparation of cathodic...

Details Concentrate suitable for the preparation of cathodic... Concentrate suitable for the preparation of cathodic...

C - Chemistry, Metallurgy

09

D

C09D 5/44 (2006.01) C08G 18/64 (2006.01) C08G 18/80 (2006.01) C25D 13/24 (2006.01)

Patent

CA 2420456

A two-component concentrate which includes an aqueous dispersion of a cathodically depositable binder having groups comprising active hydrogen that are cross-linkable using blocked polyisocyanate, as the binder component, and an anhydrous, organic solution of an oxime-blocked isocyanate-functional adduct of aromatic polyisocyanate and at least one compound comprising at least one group capable of addition towards isocyanate and at least one tertiary amino group, as the cross-linking component is used for the preparation of cathodic electrodeposition coating compositions.

La présente invention concerne un concentré à deux composantes, comprenant: une dispersion aqueuse d'un liant à déposition cathodique présentant des groupes comprenant de l'hydrogène actif qui sont réticulables au moyen de polyisocyanate séquencé, en tant que composante de liaison; et une solution anhydre organique d'un produit d'addition à fonction isocyanate séquencé en oxime, d'un polyisocyanate aromatique, et au moins un composé comprenant au moins un groupe capable de réaliser une addition vis-à-vis de l'isocyanate et au moins un groupe amino tertiaire, en tant que composante de réticulation. Ledit concentré peut être utilisé pour la préparation de compositions de revêtement d'électrodéposition cathodique.

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