A method for removing silicone fluids

C - Chemistry – Metallurgy – 11 – D

Patent

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C11D 1/66 (2006.01)

Patent

CA 2171291

A method of substantially removing a silicone fluid or a silicone-containing composition from a surface which method comprises the consecutive steps of a) applying to the surface an effective amount of a monoester compound of the general formula R-COO-X-OR1, wherein X represents a mono- or disaccharide moiety carrying the group -OR1 at the anomeric carbon atom and carrying the group R-COO- at a primary hydroxy group; R1 represents hydrogen, alkyl having 1 - 6 carbon atoms or one of the groups (a), (b) and (c), wherein Y represents methylene or ethylene; and R represents straight or branched alkyl, alkenyl, alkadienyl or alkatrienyl having 4 - 24 carbon atoms optionally substituted with hydroxy; or mixtures thereof; and b) optionally subjecting the surface to a mechanical treatment; and c) removing the silicone fluid and the monoester compound(s) from the surface.

Un procédé permettant d'enlever pratiquement entièrement une huile de silicone ou une composition contenant de la silicone d'une surface, et consistant successivement à a) appliquer à la surface une quantité efficace d'un composé monoester de la formule générale R-COO-X-OR<1>, dans laquelle X représente une fraction mono- ou disaccharide portant le groupe -OR<1> au niveau de l'atome de carbone anomérique et le groupe R-COO- au niveau d'un groupe hydroxy principal; R<1> représente hydrogène, alkyle contenant 1 à 6 atomes de carbone ou l'un des groupes (a), (b) et (c), dans lesquels Y représente méthylène ou éthylène; et R représente alkyle, alcényle, alcadiényle ou alcatriényle linéaire ou ramifié contenant 4 à 24 atomes de carbone à substitution éventuelle par hydroxy; b) à soumettre éventuellement la surface à un traitement mécanique; et c) à enlever l'huile de silicone et ou les composés monoesters de la surface.

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