C - Chemistry – Metallurgy – 23 – F
Patent
C - Chemistry, Metallurgy
23
F
C23F 11/173 (2006.01) C09D 5/08 (2006.01) C09D 139/06 (2006.01) C23C 22/34 (2006.01) C23C 22/36 (2006.01) C23C 22/68 (2006.01) C23C 22/83 (2006.01)
Patent
CA 2399446
The invention relates to a method for providing a metal surface with an anti- corrosion treatment. Said method is characterized in that the metal surface is brought into contact with a homo- or copolymer of vinylpyrrolidone. The invention also relates to a solution for application, containing a) 0.02 to 20 g/l phosphoric acid and/or at least one fluoro acid of one or more elements of the following group: Zr, Ti, Hf and Si; or their respective anions and b) 0.05 to 20 g/l of a homo or copolymer of vinylpyrrolidone; and to a concentrate for the same.
L'invention concerne un procédé de traitement de protection d'une surface métallique contre la corrosion. Selon ce procédé, la surface métallique est mise en contact avec un homopolymère ou un copolymère de pyrrolidone de vinyle. L'invention concerne également une solution d'application contenant a) 0,02 à 20 g/l d'acide phosphorique et/ou au moins un acide fluorique d'au moins un élément du groupe Zr, Ti, Hf et Si ou respectivement de leurs anions et b) 0,05 à 20 g/l d'un homopolymère ou copolymère de pyrrolidone de vinyle. L'invention concerne enfin un concentré nécessaire à cet effet.
Koch Alina Monica
Schenzle Bernd
Henkel Kommanditgesellschaft Auf Aktien
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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