Henkel Ag & Company, Kgaa

Ciba Specialty Chemicals Corporation

Henkel Kgaa

Andreas Schmidt

Matthias Koch

Friedhelm Nickel

Ard De Zeeuw

Konstanze Mayer

Franz-Adolf Czika

Sophie Cornen

Yvonne Willemsen

Eckhard Schollmeyer

Mustapha Benomar

Carsten Friese

Nicole Teubert

Dierk Knittel

Hans-Jürgen Buschmann

The present invention relates to a multistage method for the corrosion-protective and adhesion-promoting treatment of metal surfaces, comprising a first method step for passivating pretreatment using an acidic aqueous composition (A) containing water-soluble compounds of Zr and/or Ti and fluoride ions, a subsequent method step for post-treatment using an aqueous composition (B) containing at least one organic compound having at least one aromatic heterocyclic compound, wherein the aromatic heterocyclic compound has at least one nitrogen atom. The invention further relates to a metal surface treated according to the method according to the invention and the use of said treated metal surface for subsequent coating with an organic binding agent system.

Multistage method for treating metal surfaces prior to dip painting

The invention relates to an aqueous, chromium-free and curable corrosion protection agent for the first coating of metal surfaces, said agent containing at least one organic polymer or copolymer of at least partially acylated vinyl amines, for improving the properties of adhesion of the cured first coating to the metallic surface and to further organic coatings. The invention also relates to a method for producing a first coating comprising the agent according to the invention, and for applying further organic coatings, in particular those based on polyurethane resins and/or based on isocyanates and diols or polyols, and to a metal strip produced in this way or a metal sheet cut off same, which can optionally be shaped.

Paint adhesion by polyvinyl amines in acidic aqueous corrosion protection product containing polymers

The invention relates to a process for the preparation of reactive cyclodextrins, in which process the cyclodextrins CD are reacted with a bifunctional alkyl compound X&#x2014;(CH)&#x2014;Y, wherein X is a group which reacts with CD, n is an integer from 2 to 20 and Y is a group which reacts with a group Z or is a group-Reactive which is capable of reaction with cellulosic or proteinic materials and, optionally, in a further step, insofar as Y is a group which reacts with a group Z, the resulting product is reacted with a reactive anchor compound Z-Reactive to form the reactive cyclodextrin, and also to reactive cyclodextrins prepared in accordance therewith, to materials dressed therewith and to the use thereof.

Method for producing reactive cyclodextrins, textile material provided with same, and use of said cyclodextrin derivatives

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Nordheim, Germany

Andreas Schmidt