Stabilizing titanium dioxide pigments with vanadates
CA 1101611 A · Owner: Bayer Aktiengesellschaft · Inventors: Panek, Peter; Stutgens, Heribert; Woditsch, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Bayer 3416-LH:rw, STABILIZING TITANIUM DIOXIDE PIGMENTS WITH VANADATES, Abstract of the Disclosure, A process for the production of a light-stable and weather-stable titanium dioxide pigment comprising precipitating onto the pigment in aqueous suspension a colorless vanadate of at least one of zinc, magnesium, calcium strontium and barium, at a pH-value above 7 in about 0.01 to 5% by weight expressed, as V2O5, based on TiO2. Advantageously the pigment either before or after precipitation of the vanadate is coated with at least one oxide, oxide hydrate or phosphate of titanium silicon, aluminum or zirconium.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted May 26, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 26, 1998.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.