Butadiene chlorination process
CA 1107303 A · Owner: E. I. Du Pont De Nemours And Company · Inventors: Redwine, Terry W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved process for the continuous chlorination in vapor phase of butadiene to a mixture of dichlorobutenes at a temperature about 90-250°C wherein, chlorine is premixed with a portion of butadiene and introduced at one end of a tubular reactor while the, remainder of the butadiene, which is used in a large excess, is introduced at one or more points downstream from the point of introduction of the chlorine-butadiene mixture, the temperature and volume of this additional butadiene being sufficient to effectively cool the reacting mixture so that the maximum temperature in the reactor does not exceed about 250°C but does not fall downstream from the butadiene injection point below about …
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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 18, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 18, 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.