Process for colouring ceramic materials

Details Process for colouring ceramic materials Process for colouring ceramic materials

2004-12-22

2010-10-12

Hug, Eric (Department: 1791)

Plastic and nonmetallic article shaping or treating: processes

Heat polishing of inorganic article surface outside of mold

With coating outside of mold

C264S643000

Reexamination Certificate

active

07811508

ABSTRACT:
The invention relates to a new process for coloring ceramic materials by using aqueous solutions of chromophore ions. In particular, certain types of silica are added to the ceramic mixes which are to be colored, after which aqueous or organic solutions comprising inorganic salts of Fe (II) and/or Fe (III), or organic derivatives of Fe (II) and/or Fe (III) are applied to the surface of the said additive-containing ceramic mixes.

REFERENCES:
patent: 6228160 (2001-05-01), Hanich et al.
patent: 198 56 070 (2000-06-01), None
patent: 1 264 811 (2002-12-01), None
patent: 02/10092 (2002-02-01), None
ISA International Search Report.

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