Use of aqueous protective coating compositions for...

C - Chemistry – Metallurgy – 08 – B

Patent

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C08B 11/02 (2006.01) C08B 15/02 (2006.01) C08B 31/12 (2006.01) C08B 37/14 (2006.01) C08J 3/03 (2006.01) C08J 3/21 (2006.01) C08L 1/26 (2006.01) C08L 3/08 (2006.01) C08L 29/04 (2006.01) C09D 7/00 (2006.01)

Patent

CA 2338621

The invention is directed to the use of an aqueous protective coating composition containing a binder system and a combination of associative thickeners for industrial coatings. The combination of associative thickeners contains at least one associative thickener which is not a polyurethane thickener and is selected so that its concentration required by the specific application method is below the critical concentration C*, defined as the thickener concentration at which the coils of the thickener polymers start to overlap of entangle calculated according to the Mark Houwink equation.

L'invention concerne l'utilisation d'une composition aqueuse de revêtement protecteur contenant un liant, et une combinaison d'épaississants associatifs pour peintures industrielles. Cette combinaison d'épaississants associatifs contient au moins un épaississant associatif sans polyuréthane sélectionné de sorte que la concentration requise par le procédé de réalisation spécifique soit inférieure à la concentration critique C* définie comme la concentration à laquelle les spirales des polymères de l'épaississant commencent à se chevaucher et s'entremêler, ladite concentration critique étant établie d'après les calculs effectuées au moyen de l'équation de Mark Houwink.

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