Stains which bake to a red-brown color, process for their preparation and their methods of use
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 8, 2001
Grant Date -
N/A
app pub date -
Feb 2, 1999
filing date -
Feb 3, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention provides new stains which fire to a red-brown color for coloring ceramic compositions. The stains comprise Fe.sub.2 O.sub.3 and/or an Fe compound which forms Fe.sub.2 O.sub.3 on firing, in uniform distribution in a pulverulent matrix based on an oxide-like and/or silicate-like material which is amorphous to X-rays to the extent of at least 50% and has a specific surface area (BET) of at least 40 m.sup.2 /g, and are obtainable by bringing the constituents into intensive contact together. The matrix preferably comprises 80 to 100% amorphous SiO.sub.2 or SiO.sub.2 -rich silicate with a BET surface area of 90 to 300 m.sup.2 /g and 0 to 20% of an auxiliary substance, such as silicone oil. The stains can be prepared by intensive dry grinding.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully