(hydrocarbylthio) phenols and their preparation
CA 1253521 A · Owner: Ethyl Corporation · Inventors: Mckinnie, Bonnie G.; Ranken, Paul F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, (Hydrocarbylthio)phenols containing at least two hydrocarbylthio groups or hydrocarbylthio groups in either or both of the meta positions, relative to the hydroxy group, on a phenolic ring are prepared by reacting phenolic compounds with an excess of hydrocarbyl disulfide in the presence of catalytic amounts of an aluminum phenoxide. Novel and useful (hydrocarbylthio)phenols containing at least two hydrocarbylthio groups or hydrocarbylthio groups in either of both of the meta positions, relative to the hydroxy group on a, phenolic ring can be prepared by this process. (Hydrocarbylthio)phenols containing at least two hydrocarbylthio groups or hydrocarbylthio groups in either of …
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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 May 2, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 2, 2006.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.