C - Chemistry – Metallurgy – 03 – C
Patent
C - Chemistry, Metallurgy
03
C
261/13
C03C 8/06 (2006.01) C23D 5/00 (2006.01)
Patent
CA 1333722
An enamel frit for producing an acid-resistant enamelled steel in a single coating comprising at least about 40 % of silicon atoms, 50 % of silicon atoms and boron atoms, where the proportion of the boron atoms should not fall below 6.5 %, 63 % of silicon atoms, boron atoms and sodium atoms, where the proportion of the sodium atoms should not fall below 7.5 %, each relative to the overall total of the non-oxygen atoms in the frit, the proportion of the remaining non-oxygen atoms being less than about 37 %, and 1.0 to 1.2 % of cobalt atoms. In addition, there are (1) x fluorine atoms with 1 % ? x ?11 % and at least y lithium atoms and at most 2 y lithium atoms with y = (15/x) + 5 being present, the proportion of lithium atoms being from about 6.3 % to 20 % relative to the overall total of the non-oxygen atoms in the frit, or (2) y lithium atoms with 6.3 X ? y ?20 % and at least x fluorine atoms and at most 2 x fluorine atoms with x = 15/(y-5) being present, the proportion of fluorine atoms being from about 1 % to 11 % relative to the overall total of the non-oxygen atoms in the frit.
610921
Joseph Werner
Schittenhelm Hans-Joachim
Aktiengesellschaft Bayer
Fetherstonhaugh & Co.
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