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Expired Canadian patentCanada

Process for the production of 5-amino-acet-2,4- xylidine

CA 1189874 A · Owner: Mobay Chemical Corporation · Inventors: Winkelmann, Hans-Dieter; Thiem, Karl W.

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Abstract From the Canadian patent

Mo-2337, OC-004, PROCESS FOR THE PRODUCTION OF 5-AMINO-ACET-2,4-XYLIDINE ABSTRACT OF THE DISCLOSURE, The present invention is directed to a process for the preparation of 5-amino-acet-2,4-xylidine comprising:, (a) hydrogenating a mixture of mono-nitroacet-2,4-xylidines which contains 5-, nitro-acet-2,4-xylidine in the presence of a catalyst and in the presence of water (b) removing the catalyst after the hydrogenation is complete, and, (c) recovering 5-amino-acet-2,4-xylidine. Mo-2337 OC-004

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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 July 2, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 2, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 25, 1983
GrantedJuly 2, 1985
Term endedJuly 2, 2002
Patent numberCA 1189874 A
Classification (IPC)C07C209/36 +1 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedFeb 25, 1983Patent grantedJuly 2, 1985Term endedJuly 2, 2002

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.