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Expired Canadian patentCanada

Thermoplastic polyester composition for powdered paint

CA 1308834 C · Owner: Seitetsu Kagaku Co. Ltd · Inventors: Okano, Tatsuro; Eguchi, Hirofumi

CIPO record

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Drawings and full text

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

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Abstract From the Canadian patent

A thermoplastic polyester composition for a powdered paint which comprises:, (a) a copolyester derived from a dicarboxylic acid component comprising 40 to less than 60 molar % of terephthalic acid and a diol component comprising at least 70 molar % of 1,4-butanediol and having a melting point determined by differential thermal analysis of 100 to 150°C, (b) a nucleating agent and, (c) a leveling agent. This composition can be applied with a lowered pre-heat temperature and a lowered heat setting temperature and can form a coating film having an excellent adhesion, a good appearance and a high impact resistance.

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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 13, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 13, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 21, 1986
GrantedOctober 13, 1992
Term endedOctober 13, 2009
Patent numberCA 1308834 C
Classification (IPC)C09D5/44 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedAug 21, 1986Patent grantedOct 13, 1992Term endedOct 13, 2009

Sources & verification

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