Process for the preparation of 2-chloro-1,1,1,2,3,3,3- heptafluoropropane
CA 1162511 A · Owner: Hoechst Aktiengesellschaft · Inventors: Von Halasz, Sigmar-Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract:, Process for the preparation of 2-chloro-1,1,1,2,3,3,3heptafluoropropane, The invention relates to a process for the selective preparation of 2-chloro-1,1,1,2,3,3,3-heptafluoropropane, wherein 1,1,1,2,3,3,3-heptafluoropropane is reacted in the gas phase with elementary chlorine in the presence of high-energy radiation at reaction temperatures in the range of from -30° to +500°C.
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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 February 21, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 21, 2001.
- 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.