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Forehearth color concentrate

閱讀：964發(fā)布：2023-06-13

專利匯可以提供Forehearth color concentrate專利檢索，專利查詢，專利分析的服務(wù)。并且Forehearth color concentrates for coloring molten clear base glass in a glass furnace forehearth after melting and fining, comprising a non-smelted interspersion of a flux and colorant. Suitable fluxes are those materials which are compatible with the glass and which promote the fusion and dispersion of the colorant. Suitable fluxes include the alkali borates, boric acid, alkali phosphates, orthophosphoric acid, alkali silicates, fluosilic acid, alkali fluorides, alkali salts, alkali hydroxides, mixtures and reaction products of said fluxes. Alkali silicates and particularly sodium silicates are preferred. Suitable colorants include color indicating metals, color inducing metal oxides or compounds which contain a color inducing metal oxide.，下面是Forehearth color concentrate專利的具體信息內(nèi)容。

  • 2. A forehearth color concentrate consisting essentially of, as a non-smelted pelletized interspersion, a colorant oxide and a flux, in from about 0.1 weight percent to about 20.5 weight percent colorant oxide, and from about 79.5 weight percent to about 99.9 weight percent flux, said colorant oxide consisting essentially of Cr2O3 dispersed throughout said interspersion as discrete, unreacted particles, and said flux consisting essentially of an alkali silicate.
  • 3. The color concentrate of claim 2 wherein said colorant oxide is present in from about 0.1 to about 13.9 weight percent, and said flux is present in from about 86.1 to about 99.9 weight percent.
  • 4. The color concentrate of claim 2 wherein said colorant oxide is present in from about 0.1 to about 6.25 weight percent, and said flux is present in from about 93.75 to about 99.1 weight percent.
  • 5. The color concentrate of claim 2 wherein said alkali is sodium.
  • 6. The color concentrate of claim 3 wherein said alkali is sodium.
  • 7. The color concentrate of claim 4 wherein said alkali is sodium.
  • 8. The color concentrate of claim 1 wherein said alkali is sodium.
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