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Expired Canadian patentCanada

Curable compositions containing metallocene complexes, the activated precursors obtainable therefrom and the use thereof

CA 1285686 C · Owner: Buhler, Niklaus · Inventors: Lohse, Friedrich; Berner, Godwin; Zweifel, Hans

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Abstract From the Canadian patent

Curable compositions containing metallocene complexes the activated precursors obtainable therefrom and the use thereof, Abstract of the Disclosure, The present invention provides activated curable compositions obtainable by irradiating a curable composition which comprises, A) a cationically polymerisable organic material and, B) at least one compound of the formula I (R1) (R2M)a +an ? LQm-q (I), wherein a is 1 or 2 each of n and q independently of the, other is an integer from 1 to 3 M is the cation of a, monovalent to trivalent metal of groups IVb to VIIb VIII, or Ib of the Periodic Table, m is an integer corresponding to the valency of L + q, Q is a halogen atom, L is a divalent to …

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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, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 2, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 17, 1983
GrantedJuly 2, 1991
Term endedJuly 2, 2008
Patent numberCA 1285686 C
Classification (IPC)G03C1/72 +2 more

Timeline

Timeline From CIPO dates

198419871990199319961999200220052008Application filedMay 17, 1983Patent grantedJuly 2, 1991Term endedJuly 2, 2008

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