Aqueous coating liquid for forming a magnesium oxide film

C - Chemistry – Metallurgy – 09 – D

Patent

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Details

C09D 1/00 (2006.01) C03C 17/25 (2006.01) C09D 7/00 (2006.01)

Patent

CA 2458770

The present invention provides an aqueous coating liquid for forming a magnesium oxide film that comprises: (a) a magnesium carboxylate derived from a carboxylic acid having 1 to 6 carbon atoms, (b) a surfactant, (c) a polyhydric alcohol compound, and (d) a solvent made substantially of water wherein the magnesium carboxylate is contained in a ratio of 5 wt% or more and 50 wt% or less, the surfactant is contained in a ratio of 0.01 wt% or more and 2.5 wt% or less, and the polyhydric alcohol compound is contained in a ratio of 0.05 wt% or more and 40 wt% or less, based on a weight of the entire coating liquid wherein a content of the magnesium carboxylate is the same with or larger than that of the polyhydric alcohol compound, and a total weight of the magnesium carboxylate and the polyhydric alcohol compound is 80 wt% or less of the weight of the entire coating liquid and wherein the magnesium carboxylate, the surfactant, and the polyhydric alcohol compound are dissolved in the solvent.

La présente invention permet d'obtenir un enduit liquide destiné à former une pellicule d'oxyde de magnésium, liquide composé : a) d'un carboxylate de magnésium dérivé d'un acide carboxylique comptant 1 à 6 atomes de carbone; b) d'un surfactant; c) d'un composé d'alcool polyhydrique; d) d'un solvant composé essentiellement d'eau, renfermant le carboxylate de magnésium à une teneur de 5 % en poids ou plus, et de 50 % en poids ou moins, le surfactant à une teneur de 0,01 % en poids ou plus et de 2,5 % en poids ou moins, ainsi que le composé d'alcool polyhydrique à une teneur de 0,05 % en poids ou plus et de 40 % en poids ou moins, selon le poids total de l'enduit liquide, dans lequel la teneur en carboxylate de magnésium est égale ou supérieure à celle du composé d'alcool polyhydrique, et le poids total du carboxylate de magnésium et du composé d'alcool polyhydrique représente 80 % ou moins du poids total de l'enduit liquide et où le carboxylate de magnésium, le surfactant et l'alcool polyhydrique sont dissous dans le solvant.

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