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Expired Canadian patentCanada

Neoalkoxy organo-titanates and organo-zirconates useful as coupling and polymer processing agents

CA 1237140 A · Owner: Kenrich Petrochemicals, Inc. · Inventors: Sugerman, Gerald; Monte, Salvatore J.

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Abstract From the Canadian patent

A composition of matter comprising neoalkoxy compounds having the following formula:, wherein M is titanium or zirconium R, R1 and R2 are each a monovalent, alkyl alkenyl, alkynyl, aralkyl, aryl or alkaryl group having up to twenty carbon atoms or a halogen or ether substituted derivative thereof, and, in addition, R2 may also be an oxy derivative or an ether substituted oxy derivative of said groups; A B, and C are each a, monovalent aroxy, thioaroxy diester phosphate, diester pyrophosphate oxyalkylamino, sulfonyl or carboxyl containing up to 30 carbon atoms; and a + b + c = 3. Compositions containing the reaction product of said neoalkoxy compounds and comminuted material; polymeric …

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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 May 24, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 24, 2005.
  • 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 13, 1985
GrantedMay 24, 1988
Term endedMay 24, 2005
Patent numberCA 1237140 A
Classification (IPC)C07F7/00 +2 more

Timeline

Timeline From CIPO dates

1986198819901992199419961998200020022004Application filedMay 13, 1985Patent grantedMay 24, 1988Term endedMay 24, 2005

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