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Expired Canadian patentCanada

Method for continuously producing tert-butyl alcohol

CA 1098545 A · Owner: Nippon Oil Co. Ltd. · Inventors: Hirano, Noboru; Sakata, Ko; Yasuda, Mitsuo

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Abstract From the Canadian patent

Abstract of the disclosure, A continuous method for producing tert-butyl alcohol from water and isobutylene in the presence of a strongly acidic cation exchange resin as a catalyst is characterized by; said catalyst particles being filled in a reactor, a liquid isobutylene being continuously brought into contact with water such that said liquid isobutylene is filled in a continuous phase in the gaps between said catalyst particles, and that water streams downwardly along the surface of said catalyst particle and subsequently the reaction mixture being continuously taken out from-the reactor. According to the method of this invention, tert-butyl alcohol is obtained in a high yield, with …

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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 March 31, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 31, 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.
FiledJuly 27, 1978
GrantedMarch 31, 1981
Term endedMarch 31, 1998
Patent numberCA 1098545 A
Classification (IPC)C07C31/12 +1 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedJuly 27, 1978Patent grantedMarch 31, 1981Term endedMarch 31, 1998

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