The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 26, 2002
Filed:
Mar. 15, 2000
Andreas Schriener, Bad Homburg, DE;
Herbert Triptrap, Frankfurt, DE;
Philip Robert Jackson, Stoke-on-Trent, GB;
Steven Charles Withington, Stoke-on-Trent, GB;
David Shingler, Stoke-on-Trent, GB;
dmc, Frankfurt am Main, DE;
Abstract
Hitherto, glazing defects have arisen during glazing of ceramic substrates with an electrostatically applicable coating powder. This problem is solved by the coating powder CP and the coating method. The electrostatically applicable coating powder CP contains 1 to 50 wt. % of a glass-forming composition A which begins softening at 400 to 750° C. and 99 to 50 wt. % of a glass-forming composition B which begins to soften above 750-1,100° C. Preferably, the coating powder consists of 2.5 to 25 wt. % A, 75 to 97.5 wt. % B and 0 to 20 wt. %, specially 2 to 10 wt. % of thermally or chemically activatable adhesive agents. The coating powder CP is electrostatically applied as a single powder. Alternately, coating can be applied in two layers, wherein the CP powder contains at least 5 wt. % of glass-forming composition A as a lower layer and the powder CP contains at least 50 wt. % of glass-forming composition B as an upper layer.