Method of preparing a coating solution and a corresponding...

Coating processes – Centrifugal force utilized

Reexamination Certificate

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C427S376200, C427S380000, C427S425000

Reexamination Certificate

active

07879395

ABSTRACT:
A method of preparing a coating solution, comprising the steps of providing a first solution comprising a lower alcohol; a polyethylene glycol; a complexing agent; and water; providing a second solution comprising a higher alcohol; and at least one metal alkoxide, wherein the metal in said at least one metal alkoxide is selected from the group consisting of zirconium, aluminium, titanium, tantalum and yttrium; forming a sol-gel solution by mixing said first and second solutions and thereby hydrolyzing said at least one metal alkoxide to a metal oxide and an alcohol; forming a concentrated solution by removing said lower alcohol and the alcohol resulting from the hydrolysis of said at least one metal alkoxide; and forming a coating solution by adding a medium alcohol to said concentrated solution.

REFERENCES:
patent: 5699192 (1997-12-01), Van Dine et al.
patent: 6337032 (2002-01-01), Chivukula et al.

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