Process for producing 2,6-naphthalenedicarboxylic acid by oxidizing 2,6-diisopropylnaphthalene
CA 1303059 C · Owner: Konai, Yutaka · Inventors: Matsuda, Toshiharu; Hayashi, Shoichiro; Sasakawa, Atsushi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
TITLE OF THE INVENTION:, PROCESS FOR PRODUCING 2,6-NAPHTHALENEDICARBOXYLIC ACID BY OXIDIZING 2,6-DIISOPROPYLNAPHTHALENE ABSTRACT OF THE DISCLOSURE:, Disclosed herein is a process for producing a highly pure product of 2,6-naphthalenedicarboxylic acid in a large quantity at a moderate price by oxidizing 2,6-diisopropylnaphthalene while using a water-soluble salt of cobalt a, water-soluble salt of manganese or a mixture thereof a, water-soluble salt of cerium and a bromine compound as the catalyst of the oxidation. - 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 June 9, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 9, 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
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.