Self-priming color foundation finishes

C - Chemistry – Metallurgy – 09 – D

Patent

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Details

C09D 7/12 (2006.01) C09D 5/02 (2006.01) C09D 201/00 (2006.01)

Patent

CA 2733944

Paint systems, in accordance with exemplary embodiments, of the present invention include a foundation base component and a top coat component. The foundation base component is tinted to match the top coat component to provide both the desired amount of hiding of colors or markings on the substrate to which the paint system is applied, and to enhance the brightness and hue of the color of the paint system. Furthermore, in another innovative aspect of the present invention, the foundation base component comprises at least one low molecular weight polymer that undergoes self-crosslinking at ambient conditions during and after paint drying. The low molecular weight polymer penetrates various substrates, including chalky surfaces, to provide improved adhesion. Moreover, because the low molecular weight polymer is self-crosslinking at ambient conditions, the polymer enhances the performance of dried paints, including improving mechanical strength, tannin block properties, and weatherability.

La présente invention concerne des systèmes de peinture qui, selon des modes de réalisation illustratifs, comprennent un composant de base de fondation et un composant de couche supérieure. Le composant de base de fondation est teint pour correspondre au composant de couche supérieure à la fois pour fournir la quantité souhaitée de masquage des couleurs ou marques sur le substrat auquel le système de peinture est appliqué, et pour améliorer la brillance et la teinte de la couleur du système de peinture. Par ailleurs, selon un autre aspect innovant de la présente invention, le composant de base de fondation comprend au moins un polymère de faible poids moléculaire qui subit une auto-réticulation en conditions ambiantes pendant et après le séchage de la peinture. Le polymère de faible poids moléculaire pénètre dans divers substrats, y compris les surfaces crayeuses, pour améliorer ladhésion. Par ailleurs, puisque le polymère de faible poids moléculaire sauto-réticule en conditions ambiantes, le polymère améliore les performances des peintures séchées, notamment les propriétés de résistance mécanique, de blocage des tannins et de tenue aux intempéries.

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