Process for producing 2-(4-hydroxyphenoxy) propionate derivatives
CA 1210408 A · Owner: Nissan Chemical Industries Ltd. · Inventors: Tsuchiya, Shuji; Hashiba, Isao; Nishikimi, Tadashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for producing a 2-(4-hydroxyphenoxy) propionate derivative represented by the formula: (I), where Alk is a C1 - C5 alkyl group which comprises, reacting a phenoxy propionate derivative represented by the formula:, (II), where Alk is as defined above with a peroxide to obtain, a formate derivative represented by the formula: (III), where Alk is as defined above, and hydrolyzing the formate of the formula III.
Read the whole patent
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 August 26, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 26, 2003.
- 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.