Preparation of 3-(alkylthio)aldehydes
CA 1297908 C · Owner: Atochem North America, Inc. · Inventors: Sandler, Stanley R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for preparing 3-(C1-C12 alkylthio) C3-C10 aldehydes by reacting a C1-C12 alkyl mercaptan with an .alpha..beta.-unsaturated aliphatic aldehyde having from 3 to 10 carbon atoms in the presence of a weakly basic exchange resin having polyamine functionality and being in the free base form, is disclosed herein.
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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 March 24, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 24, 2009.
- 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.