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Expired Canadian patentCanada

Scavenging of residual acrylonitrile monomer in abs latex

CA 1206658 A · Owner: Borg-Warner Chemicals, Inc. · Inventors: Wozny, Mary E.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Scavenging of Residual Acrylonitrile, Monomer in ASS Latex Abstract, The addition of aryl methanamines such as m-xylylenediamine to polymer latices which contain residual acrylonitrile monomer is markedly effective in reducing the measurable free acrylonitrile contents of latices.

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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 June 24, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 24, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 18, 1983
GrantedJune 24, 1986
Term endedJune 24, 2003
Patent numberCA 1206658 A
Classification (IPC)C08K5/17 +2 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedApril 18, 1983Patent grantedJune 24, 1986Term endedJune 24, 2003

Sources & verification

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