C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 5/20 (2006.01) B08B 7/00 (2006.01) C11D 11/00 (2006.01)
Patent
CA 2696161
This invention relates to a method for removing contaminant material (e.g., graffiti) from a substrate, comprising: applying a coating composition to the substrate, the coating composition comprising water, a water-soluble film forming polymer, a wetting agent and a thixotropic additive; dehydrating the aqueous composition and/or crosslinking the polymer to form a sacrificial barrier coating; depositing the contaminant material on the barrier coating; and removing at least part of the barrier coating and the contaminant material from the substrate.
La présente invention concerne une méthode permettant de retirer des agents contaminants (tels que des graffitis) d'un substrat, comprenant: l'application d'un enduit sur le substrat, l'enduit étant composé d'eau, d'un polymère filmogène soluble dans l'eau, d'un agent mouillant et d'un additif thixotrope; la déshydratation de la composition aqueuse et/ou la réticulation du polymère pour obtenir un revêtement de protection sacrificiel; le dépôt de l'agent contaminant sur le revêtement de protection; et le retrait d'au moins une partie du revêtement de protection et de l'agent contaminant du substrat.
Edgington Garry
Gotto Keegan Laurel
Cellular Bioengineering Inc.
Smart & Biggar
LandOfFree
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