Adhesion-promoting agent for protective coatings

C - Chemistry – Metallurgy – 08 – G

Patent

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Details

C08G 18/10 (2006.01) C07C 273/18 (2006.01) C08G 18/32 (2006.01) C08G 18/50 (2006.01) C08G 18/66 (2006.01) C08G 18/72 (2006.01) C08G 18/79 (2006.01) C08G 18/80 (2006.01) C09D 175/02 (2006.01)

Patent

CA 2707792

The present invention relates to an adhesion-promoting agent that contains at least 1.5 isocyanate groups per mol-ecule and at least one urea linked silane group, coating compositions containing the adhesion promoting agent and methods for adhering protected coatings to a substrate. The adhesion-promoting agent is especially useful as an additive to the crosslinking com-ponent of a two component coating composition. The coating composition is especially useful for use as a protective coating on a previously coated or uncoated substrate such as an automobile.

La présente invention concerne un agent de promotion de l'adhérence qui contient au moins 1,5 groupe isocyanate par molécule et au moins un groupe silane à liaison urée, des compositions de revêtement qui contiennent l'agent de promotion de l'adhérence, ainsi que des procédés d'adhérence de revêtements protecteurs à un substrat. L'agent de promotion de l'adhérence est particulièrement utile comme additif au composant de réticulation d'une composition de revêtement à deux composants. La composition de revêtement est particulièrement utile pour une utilisation comme revêtement protecteur sur un substrat précédemment non recouvert ou recouvert comme une automobile.

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