Method and composition for surface coating

Details Method and composition for surface coating Method and composition for surface coating

G - Physics

01

N

G01N 21/88 (2006.01) B62D 65/00 (2006.01)

Patent

CA 2714613

A method of revealing surface imperfections on an object comprising the steps of: coating the surface to be inspected with a composition comprising an opaque, water-dispersible liquid, sufficiently surface-adherent and with surface-wetting properties as to create a gloss finish, at least before the liquid dries, on the restored area; inspecting the surface to check for imperfections; and removing said composition with water. The method may also include a step of marking the surface, through the wet composition layer, to indicate the location of imperfections discovered. Also described are compositions and delivery systems suitable for carrying out the method comprising aqueous dispersions of a pigment and a resin, especially a polysaccharide resin.

L'invention concerne un procédé de révélation d'imperfections de surface sur un objet. Le procédé comprend les étapes consistant à : revêtir le substrat à examiner d'une composition comprenant un liquide dispersible dans l'eau, opaque, suffisamment adhérent à la surface, et présentant des propriétés de mouillage de surface de façon à créer un fini brillant au moins avant que le liquide ne sèche sur la zone restaurée ; examiner la surface pour vérifier les imperfections ; et retirer ladite composition avec de l'eau. Le procédé peut également comporter une étape consistant à marquer la surface, à travers la couche de composition humide, pour indiquer l'emplacement d'imperfections découvertes. L'invention concerne également des compositions et des systèmes de distribution appropriés pour réaliser le procédé, y compris des dispersions aqueuses d'un pigment et d'une résine, notamment une résine de polysaccharide.

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