A powder paint composition

C - Chemistry – Metallurgy – 09 – D

Patent

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Details

C09D 167/00 (2006.01)

Patent

CA 2527761

The present invention relates to a powder paint composition comprising at least (a) a thermosetting polymer having functional groups capable of reacting with .beta.-hydroxyalkylamide units (b) a compound comprising .beta.- hydroxyalkylamide units and (c) a deceleration agent, capable of reversibly blocking the functional groups of polymer (a). The deceleration agent is present in an amount sufficient to block at least 9 % of the total amount of functional groups of polymer (a). The present invention relates also to the use of a specific amine compound as a deceleration agent in a powder paint composition.

L'invention concerne une composition de peinture en poudre contenant au moins (a) un polymère thermodurcissable doté de groupes fonctionnels pouvant réagir avec des unités .szlig.-hydroxyalkylamide, (b) un composé comportant des unités .szlig.-hydroxyalkylamide, et (c) un agent décélérateur pouvant bloquer inversement les groupes fonctionnels du polymère (a). Cet agent décélérateur est en quantité suffisante pour bloquer au moins 9 % de la quantité totale des groupes fonctionnels du polymère (a). La présente invention porte également sur l'utilisation d'un composé amine spécifique en tant qu'agent décélérateur dans une composition de peinture en poudre.

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