C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
C23C 22/37 (2006.01) C23C 22/34 (2006.01)
Patent
CA 2259332
Heating an aqueous mixture of a fluoroacid such as H2TiF6 and an oxide, hydroxide, and/or carbonate such as silica produces a clear mixture with long term stability against settling of any solid phase, even when the oxide, hydroxide, or carbonate phase before heating was a dispersed solid with sufficiently large particles to scatter light and make the mixture before heating cloudy. The clear mixture produced by heating can be mixed with soluble hexavalent and/or trivalent chromium, and preferably also nitrate and chloride ions to produce a composition that provides a conversion coating with good protection against corrosion while requiring substantially less chromium than previous coatings of equal corrosion protective quality.
En chauffant un mélange aqueux d'un acide fluoré tel que le H¿2?TiF¿6? et d'un oxyde, hydroxyde et/ou carbonate tel que la silice, on obtient un mélange clair présentant une stabilité à long terme vis-à-vis de la sédimentation de toute phase solide, même si avant le chauffage, la phase oxyde, hydroxyde ou carbonate se présentait sous la forme d'un solide dispersé en particules suffisamment importantes pour diffuser la lumière et rendre le mélange laiteux avant chauffage. Le mélange clair obtenu par chauffage peut être mélangé à du chrome soluble hexavalent et/ou trivalent et de préférence à des ions nitrate ou chlorure pour fournir une couche de conversion assurant une protection contre la corrosion, tout en requérant sensiblement moins de chrome que les revêtements antérieurs d'une qualité équivalente de protection contre la corrosion.
Henkel Corporation
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
LandOfFree
Composition and process for treating metal does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Composition and process for treating metal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Composition and process for treating metal will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1833406