Process of colouring of the glass materials
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United States of America Patent
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Issued Date -
Sep 18, 2003
app pub date -
Dec 6, 2002
filing date -
Dec 6, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A process for colouring the glass materials to obtain decorated articles of glass-ceramics by the diffusion colouring technique, comprising the steps of: heat treatment of a precursor material or an article made of a transparent glass in vapours of a colourant selected from the group consisting of CuCl, CoCl.sub.2, NiCl.sub.2, MnCl.sub.2, or their mixture, in the following controlled temperature-temporal mode: continuous or step-by-step, with isothermal holdings, heating to T=800-900.degree. C. at rate of 300-500.degree.C./h, and after the final isothermal holding--heating to 950-1150.degree. C. at rate of 300-900.degree. C./h, holding and cooling. A process for colouring the glass materials to obtain decorated articles of glass by the diffusion colouring technique, comprising the steps of: heat treatment of a precursor material or an article made of a transparent glass in vapours of a colourant selected from the group consisting of CuCl, CoCl.sub.2, NiCl.sub.2, MnCl.sub.2, or their mixture, in the following controlled temperature-temporal mode: continuous or step-by-step, with isothermal holdings, heating to 800-900.degree. C. at rate of 250-700.degree.C./h, and cooling after the final isothermal holding.
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