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Expired Canadian patentCanada

Process for producing self-crosslinking cathodically depositable ed-binders based on alkyl-phenol- formaldehyde condensates

CA 1213391 A · Owner: Vianova Kunstharz Aktiengesellschaft · Inventors: Gmoser, Johann; Daimer, Wolfgang; Schipfer, Rudolf

CIPO record

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Abstract From the Canadian patent

Cathodically depositable self-crosslinking binders for electrodeposition based on alkylphenol-formaldehyde condensates wherein an alkylphenol-formaldehyde condensate having a molecular weight of at least 500 and a hydroxyl value of between 100 and 700 mg KOH/g, modified through self-condensation or etherification of the phenolic hydroxy groups obtained through a, reaction catalyzed with a base (component A) is reacted, simultaneously or separately with (B) amines which carry a tertiary amino group and at least one hydroxy group and/or a primary or secondary amino group (component B) and (C) aromatic and/or aliphatic and/or cycloaliphatic di-or polyisocyanates (component C), the weight ratio …

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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 October 28, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 28, 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.
FiledMarch 20, 1984
GrantedOctober 28, 1986
Term endedOctober 28, 2003
Patent numberCA 1213391 A
Classification (IPC)C08G18/54 +2 more

Timeline

Timeline From CIPO dates

1985198719891991199319951997199920012003Application filedMarch 20, 1984Patent grantedOct 28, 1986Term endedOct 28, 2003

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