Corrosion-inhibiting composite material
AssigneesEXCOR Korrosionsschutz-Technolgien und--Produkte GmbH, Feinchemie GmbH Sebnitz
InventorsHorst Bottcher, Karl-Heinz Kallies, Georg Reinhard, Gerhard Hahn
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Abstract
The invention relates to a corrosion-inhibiting material comprising a composite containing a metal oxide gel, where necessary modified by an organic polymer, and one or more corrosion inhibitors, and to a method for the production thereof. The corrosion-inhibiting composite material is used for producing corrosion-protective packaging material, for coating metallic and metallized articles as well as for corrosion protection in confined environments.
Claims17
A corrosion-inhibiting composite material comprising a composite of a metal oxide gel and one or more volatile corrosion inhibitors which are homogeneously distributed in a molecular-dispersed manner within the metal oxide gel.
A method of producing a corrosion-inhibiting composite material comprising the following steps:
- (a) producing a metal oxide sol containing SiO.sub.2, Al.sub.2 O.sub.3, TiO.sub.2, ZrO.sub.2 or ZnO or mixtures of the metal oxides optionally modified by R-SiO.sub.n wherein R is alkyl and n is a value <2, by hydrolysis of the corresponding metal alkoxides in an aqueous, organic or mixed solvent,
- (b) dissolving one or more volatile corrosion inhibitors in the metal oxide sol,
- (c) gelling the corrosion inhibitor-containing metal oxide sol by heating and/or neutralizing or by coating on a substrate, wherein the volatile corrosion inhibitor is homogeneously distributed in a molecular-dispersed manner in the metal oxide gel, and
- (d) removing the solvent.
Dependencies are inferred from the claim text.