Aqueous coating composition and its preparation

Details Aqueous coating composition and its preparation Aqueous coating composition and its preparation

C - Chemistry, Metallurgy

09

D

C09D 5/02 (2006.01)

Patent

CA 2149944

An aqueous coating composition wherein fine grains coated with water soluble resin composed of three monomers are contained in aqueous medium, each of said fine grains are composed of aqueous resin of ethylenically unsaturated monomer and aqueous colloidal silica, which are coexistent each other. Therefore, the aqueous coating composition is superior in not only contamination resistance, but also waterproof and weatherproof. The paint film formed by the above aqueous coating composition is excellent in its strength. Accordingly, this aqueous coating composition is useful for a coating base of exterior type coating material.

Une composition de revêtement aqueuse dans laquelle des grains fins enrobés d'une résine hydrosoluble composée de trois monomères sont contenus dans un milieu aqueux, chacun de ces grains fins étant composé de résine aqueuse de monomère éthylénique insaturé et de silice colloïdale aqueuse, co-existants l'un avec l'autre. Par conséquent, la composition de revêtement aqueuse est supérieure non seulement par sa résistance à la contamination, mais aussi par son étanchéité et sa résistance aux intempéries. Le feuil de peinture formé par la composition de revêtement aqueuse susmentionnée affiche une excellente résistance. De même, cette composition est utile comme base protectrice d'un matériau de revêtement pour l'extérieur.

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