Low-voc additives for extending wet edge and open times of...

Details Low-voc additives for extending wet edge and open times of... Low-voc additives for extending wet edge and open times of...

C - Chemistry, Metallurgy

09

D

C09D 193/04 (2006.01) C08L 93/04 (2006.01)

Patent

CA 2666277

A low VOC coating additive employing a water-dispersible rosin, a high glass transition temperature water-dispersible polymer, and optionally an amphiphilic component. The additive can be added to a coating to improve the performance characteristics of the coating, such as wiped wet edge time, open time, block resistance, gloss, scrub resistance, tack-free time, dry-to-touch time, and yellowing.

La présente invention concerne un additif pour revêtement à faible teneur en COV utilisant une colophane dispersible dans l'eau, un polymère dispersible dans l'eau à température de transition vitreuse élevée et facultativement un composant amphiphile. L'additif peut être ajouté à un revêtement pour améliorer les caractéristiques de performance du revêtement, telles que le temps limite de reprise, le délai de collage, la résistance à l'adhérence, le brillant, la résistance au frottement, le temps de séchage pour être non collant, le temps pour devenir sec au toucher et le jaunissement.

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