C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
261/56.1
C04B 24/00 (2006.01) C04B 24/02 (2006.01) C04B 24/26 (2006.01) C04B 41/48 (2006.01)
Patent
CA 2286643
Efflorescence of building material, such as portland cement based building products, masonry, brick, concrete, and mortar, can be retarded by contacting the building material with polyvinylalcohol (PVOH). The PVOH may be dissolved in solvent, preferably water, and either applied to a surface of the building material, or added to the components that form the building material. The PVOH has a hydrolysis percentage above about 90 %.
On peut retarder l'efflorescence de matériau de construction tels que des produits de construction à base de ciment portland, la brique, le béton et le mortier, en mettant ledit matériau en contact avec de l'alcool polyvinylique qui peut être dissous dans un solvant, de préférence de l'eau, et appliqué sur une surface du matériau de construction ou ajouté aux composants formant ce dernier. L'alcool polyvinylique présente un pourcentage d'hydrolyse supérieur à environ 90 %.
Beckenhauer Thomas
Gowling Lafleur Henderson Llp
LandOfFree
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