C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 9/00 (2006.01)
Patent
CA 2378886
The present invention is directed to a paint stripping composition comprising (a) from about 0.5 to about 50 % by weight of an aromatic alcohol, such as benzyl alcohol; (b) from about 0.5 to about 20 % by weight of malic acid; and (c) from about 15 to about 60 % by weight of water. The pH of the composition broadly ranges from about 2 to about 3. The stripping composition of the present invention is free of chlorinated solvents, environmentally safe, and user-friendly. It is non-corrosive or only slightly corrosive to substrates, non-flammable, non-toxic, low odor, and fully biodegradable. A method of preparing the paint stripping composition is also provided.
La présente invention concerne une composition de décapant pour peinture contenant (a) entre 0,5 et 50 % en poids d'un alcool aromatique tel que l'alcool benzylique ; (b) entre 0,5 et 20 % en poids d'acide malique ; et (c) entre 15 et 60 % en poids d'eau. Le pH de cette composition varie généralement entre 2 et 3. La composition de décapant selon l'invention est exempte de solvants chlorés, sans danger pour l'environnement et d'utilisation conviviale. Cette composition n'est pas corrosive ou faiblement corrosive pour les substrats, ininflammable, non toxique, peu odorante et entièrement biodégradable. L'invention concerne également un procédé de préparation de cette composition de décapant pour peinture.
Freeworld Coatings Global (pty) Ltd.
Napier Environmental Technologies Inc.
Oyen Wiggs Green & Mutala Llp
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