Process for the catalytic trans-halogenation of a polyiodo-benzene, and, in particular, of a di-iodo-benzene
CA 1291172 C · Owner: Paparatto, Giuseppe · Inventors: Paparatto, Giuseppe
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a process for the catalytic transhalogenation of a poly-iodo-benzene, wherein said poly-iodobenzene is reacted with benzene and with oxygen in the presence, of a zeolite of the PENTASIL type exchanged with a metal of the, II, III or IV group of the Periodic system and present in forms other than the acidic form, particular and suitable operative conditions allow the di-iodo-benzenes to be easily transhalogenated into mono-iodo-benzenes.
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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 October 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 2008.
- 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
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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.