Acoustic dampening compositions containing recycled paint...

C - Chemistry – Metallurgy – 08 – J

Patent

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C08J 11/04 (2006.01) C08J 11/00 (2006.01)

Patent

CA 2331448

Acrylic resin-based plastisol compositions are improved by the incorporation of recycled paint polymer containing uncured resin (i.e., substances containing functional groups capable of undergoing chemical reaction). The compositions may be used to apply coatings to stiff articles having a tendency to vibrate such as metal automobile parts and the like. Such coatings are effective in suppressing mechanical vibration, reducing the noise of particle impact, and/or lowering the amount of air vibration in a cavity.

Il est possible d'améliorer des compositions de plastisol acrylique à base de résine par incorporation d'un constituant polymère issu de peinture recyclée contenant une résine non durcie (c'est à dire des substances contenant des groupes fonctionnels capables de réagir chimiquement). On peut utiliser ces compositions pour appliquer des revêtements visant à conférer une certaine raideur à des articles ayant tendance à vibrer, des pièces d'automobile et analogue, notamment. Ces revêtements se révèlent efficaces s'agissant de supprimer des vibrations mécaniques, de diminuer le bruit d'impact particulaire et/ou de réduire la hauteur de vibrations pneumatiques dans une cavité.

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