Process for preparation of aromatic hydroperoxides
CA 1113506 A · Owner: Mitsui Petrochemical Industries, Ltd. · Inventors: Suzuki, Keiji; Hashimoto, Isao; Nakagawa, Hiroaki
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 preparation of an aromatic hydroperoxide by oxidizing a hydroxyalkylsubstituted aromatic compound having at least one hydroxyalkyl group directly bonded to an aromatic ring carbon of the aromatic compound and being represented by the formula wherein R1 and R2 each are a lower alkyl group with hydrogen peroxide in the presence of an acid catalyst in a heterogeneous system of a water-immiscible inert aromatic hydrocarbon solvent at a reaction temperature of up to about 70°C while removing by-product water as an azeotrope with the aromatic hydrocarbon solvent in the oxidation system; characterized in that said oxidation is carried out while feeding a vapor of a …
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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 December 1, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 1, 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.