C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
C23C 22/83 (2006.01)
Patent
CA 2204280
A rinse solution for the treatment of conversion-coated metal substrates for approving the adhesion and corrosion resistance of siccative coatings comprising an aqueous solution of a group IVA metal ion selected from titanium, hafnium and mixtures thereof, optionally with other groups IVA metal ions, and an organosilane selected from the group consisting of methyltrimethoxysilane, phenyl trimethoxysilane and, for hafnium-containing compositions, 3-glycidoxypropyltrimethoxysilane. The group IVA metal ion concentration is selected to provide a pH in the range from 2.0 to 9Ø The solution is applied to a conversion- coated substrate.
Solution de rinçage pour le traitement de substrats métalliques ayant reçu un revêtement par conversion destinée à améliorer l'adhérence et la résistance à la corrosion de revêtements siccatifs ultérieurs. Ladite solution consiste en une solution aqueuse d'un ion d'un métal du groupe IVA (titane, hafnium ou leur mélange et facultativement d'autres ions de métaux du groupe IV) et d'un organosilane sélectionné parmi: un méthyltriméthoxysilane, un phényltriméthoxysilane, et, pour les compositions contenant du hafnium, un 3-glycidoxypropyltriméthoxysilane. La concentration en ions de métal du groupe IVA est choisie pour donner un pH compris entre 2,0 et 9,0. La solution s'applique à un substrat revêtu par conversion.
Borden Ladner Gervais Llp
Brent International Plc
Chemetall Plc
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