Process for the directed chlorination of alkylbenzenes
CA 1069942 A · Owner: Hooker Chemicals And Plastics Corp. · Inventors: Graham, John C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the production of nuclear chlorinated alkylbenzenes comprises reacting an alkylbenzene with chlorine in the presence of a catalyst system comprising a Lewis acid catalyst and a thianthrene cocatalyst. The nuclear chlorinated alkylbenzene products prepared in this manner are characterized by a substantially reduced ratio of orthochloro to parachloro isomer. - 1 -
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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 January 15, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 15, 1997.
- 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.