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Expired Canadian patentCanada

Coating agents based on soluble acrylate copolymers containing carboxyl groups

CA 1312985 C · Owner: Basf Lacke + Farben Aktiengesellschaft · Inventors: Jung, Werner; Sievers, Axel

CIPO record

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Abstract From the Canadian patent

The invention relates to a coating agent containing, as essential binder, (A) an acrylate copolymer having an acid number ranging from about 15 to about 200 and (B) a compound containing at least two epoxide groups per molecule, the ratio of (A) to (B) being chosen so that the ratio of the acid groups of (A) to the epoxide groups of (B) is in the range of 0.5:3 to 2:0.5. The coatings obtained with the coating agent according to the invention have outstanding properties in respect of stability towards long-term exposure to chemicals and solvents, and in respect of stability towards gasoline, elasticity, gloss, corrosion resistance and stability towards water and steam.

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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 January 19, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 19, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 29, 1986
GrantedJanuary 19, 1993
Term endedJanuary 19, 2010
Patent numberCA 1312985 C
Classification (IPC)C08F220/12 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedSep 29, 1986Patent grantedJan 19, 1993Term endedJan 19, 2010

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