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Expired Canadian patentCanada

Process for the production of molded articles, mixtures of isocyanate reactive compounds suitable therefor and the molded articles, obtained by the process

CA 1312972 C · Owner: Bayer Aktiengesellschaft · Inventors: Schafer, Hermann; Weber, Christian

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Abstract From the Canadian patent

Mo-3012, LeA 25,018, PROCESS FOR THE PRODUCTION OF MOLDED ARTICLES MIXTURES, OF ISOCYANATE REACTIVE COMPOUNDS SUITABLE THEREFOR AND THE MOLDED ARTICLES OBTAINED BY THE PROCESS ABSTRACT OF THE DISCLOSURE, The present invention is directed to a process for the production of polyurethane or polyurea elastomeric molded articles according to the reaction injection molding process by reacting a polyisocyanate a high molecular weight isocyanate reactive component and optionally a diamine chain extender wherein the, improvement is based on the use of the reaction product of a polyepoxide containing at least two epoxide groups with at least one mol of an aromatic diamine per epoxide group wherein …

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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 January 19, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 19, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 29, 1988
GrantedJanuary 19, 1993
Term endedJanuary 19, 2010
Patent numberCA 1312972 C
Classification (IPC)C08G18/66 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedJan 29, 1988Patent grantedJan 19, 1993Term endedJan 19, 2010

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