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Expired Canadian patentCanada

Silylated organic polymers

CA 1095069 A · Owner: Sws Silicones Corporation · Inventors: Martin, Eugene R.

CIPO record

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Abstract From the Canadian patent

Novel silyated organic polymers and processes for their preparation are provided herein. Such silylated organic polymers are obtained from the reaction of a silylated organic polymer and a cyclic organopolysiloxane, the silylated organic polymer being obtained from the reaction of a silane of the formula, where R is a monovalent hydrocarbon radical X is selected from the class, consisting of halogen acyloxy radicals, hydrocarbonoxy radicals sulfato, radicals, phosphato radicals and perchlorato radicals a is a number of, from 1 to 4 and b is a number of from 1 to 3 with a carbanion containing, organic polymer the carbanion containing polymer being obtained from the polymerization of an …

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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 February 3, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 3, 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.
FiledFebruary 14, 1979
GrantedFebruary 3, 1981
Term endedFebruary 3, 1998
Patent numberCA 1095069 A
Classification (IPC)C08F293/00 +1 more

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedFeb 14, 1979Patent grantedFeb 3, 1981Term endedFeb 3, 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.