Vapor phase nitration catalysts and processes for the preparation and use thereof
CA 1258666 A · Owner: Monsanto Company · Inventors: Schumacher, Ignatius
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Aromatic compounds are nitrated in the vapor phase via a process comprising contacting the aromatic compounds with a nitrating agent in the presence of a nitration promoting catalyst. Such catalysts are prepared by contacting a Group 4b-Group 3b metal oxide composition represented by the empirical formula: (M1aM2bOc)x(NO2)y, wherein M1 is at least one element selected from Group 4b of the Periodic Table of the Elements M2 is at, least one element selected from Group 3b of the Periodic Table of the Elements, a is 1, b is 0 to 20 c is, a number taken to satisfy the average valences of M1 and M2 in the oxidation states in which they exist in the composition, x is 1, and y is 0 to c with a …
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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 August 22, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 22, 2006.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.