Water-repellent paints and articles with water-repellent...

C - Chemistry – Metallurgy – 09 – K

Patent

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Details

C09K 3/18 (2006.01) B05D 5/00 (2006.01) B32B 7/00 (2006.01) C03C 17/00 (2006.01)

Patent

CA 2309957

An article having a water-repellent surface layer containing a finely particulate material which has an average primary-article diameter of 1 to 200 nm and is sparingly soluble or insoluble in water, preferably a finely particulate metal oxide whose surface has been substantially fluorinated; a water-repellent coating material which is used for forming the water-repellent surface layer and contains the finely particulate material; and a method of imparting water repellency to an article which comprises either applying the coating material to the article or applying a coating resin and sprinkling the coating with the fine particles before the resin is solidified.

La présente invention concerne un article doté d'une couche de surface résistante à l'eau, contenant une matière particulaire fine dont le diamètre moyen des particules primaires va de 1 à 200 nm et qui est peu soluble ou insoluble dans l'eau, de préférence un oxyde métallique à fines particules dont la surface a été fluorée. Elle concerne encore une matière de revêtement résistante à l'eau qui est utilisée pour former la couche de surface résistante à l'eau et contient la matière particulaire fine. Elle concerne enfin un procédé permettant de rendre un article résistant à l'eau, qui consiste soit à appliquer la matière de revêtement sur l'article, soit à appliquer une résine de revêtement et à pulvériser ledit revêtement à l'aide des particules fines avant que la résine ne soit solidifiée.

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