Water-borne hybrid binder composition and use thereof

Details Water-borne hybrid binder composition and use thereof Water-borne hybrid binder composition and use thereof

C - Chemistry, Metallurgy

08

L

C08L 57/00 (2006.01) C09D 5/02 (2006.01) C09D 133/06 (2006.01) C09D 167/00 (2006.01) C09D 201/00 (2006.01)

Patent

CA 2243297

The invention relates to a water-borne hybrid binder composition. It is obtained by mixing about 20-80 % by weight of A), an aqueous dispersion of a polymer, said dispersion having a dry-solids content of at least 45 % by weight, and containing at least 0.1 % by weight of B) a single surfactant or a mixture of two or more different surfactants and protective colloids, and about 80-20 % of C) one or more resins being emulsifiable in water and having a dry solids content above 90 % by weight, by adding the resin C to the dispersion A under agitation, the resulting hybrid binder composition obtaining a dry- solids content of 60-95 % by weight. The invention also relates to the use of the binder composition as a component in a paint or lacquer mixture.

La présente invention concerne une composition hybride aqueuse de liant. On l'obtient en mélangeant environ 20 à 80 % en poids de A) une dispersion aqueuse d'un polymère, cette dispersion ayant une teneur en matières sèches d'au moins 45 % en poids et contenant au moins 0,1 % en poids de B) un agent tensioactif unique ou un mélange de deux ou plus et de colloïdes de protection, et environ 80 à 20 % de C) une ou plusieurs résines qui peuvent être émulsionnées dans l'eau et dont la teneur en matières sèches est supérieure à 90 % en poids, en ajoutant la résine C à la dispersion A tout en agitant. La composition de liant hybride obtenue a une teneur en matières solides de 60 à 95 % en poids. L'invention concerne aussi l'utilisation de cette composition de liant comme constituant d'un mélange de peinture ou de vernis.

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