Process for depositing layers of zirconium oxide using...

Details Process for depositing layers of zirconium oxide using... Process for depositing layers of zirconium oxide using...

2005-03-01

2005-03-01

Brunsman, David (Department: 1755)

Compositions: coating or plastic

Coating or plastic compositions

Silicon containing other than solely as silicon dioxide or...

C106S287190, C501S103000, C501S134000, C423S035000, C423S418000, C423S608000

Reexamination Certificate

active

06860933

ABSTRACT:
A sol-gel process for producing layers of zirconium oxide is described which comprises the following stages:(i) production of a soluble, zirconium-containing powder by:(a) reaction of a zirconium alcoholate of the general formula Zr(OR)4, in which the residues R are the same or different and represent straight-chain, branched or cyclic alkyl or alkenyl residues with 1 to 10 carbon atoms, which optionally exhibit one or more carbonyl and/or ester and/or carboxyl functions, with one or more polar compounds having complexing, chelating properties,(b) heating the solution,(c) mixing the solution with water, optionally in the presence of a catalyst,(d) concentrating the solution until a powder is obtained,(ii) dissolving the powder forming a sol,(iii) coating a substrate with the sol, and(iv) annealing the coated substrate.

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