Benzine-1,3,5-tris-acetoxime and the process of making phloroglucinol therewith
CA 1096888 A · Owner: Akzona Incorporated · Inventors: Bergfeld, Manfred; Zengel, Hans
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Phloroglucinol may be produced by converting striacetyl benzene to benzene-1,3,5-tris-acetoxime which is a novel compound. Said acetoxime is subjected to a Beckmann rearrangement and the resulting mixture subsequently hydrolyzed to produce phloroglucinol. Avoids disadvantages of commercial process where waste water is formed, reduction is strongly acidic and contains heavy metals chromium and iron which, implies a further treatment.
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 March 3, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 3, 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.