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Expired Canadian patentCanada

Aqueous fluorinated acrylate resin emulsions

CA 1286823 C · Owner: Kawasaki, Takashi · Inventors: Kawasaki, Takashi; Ushiyama, Keiichi; Mori, Kenjiro

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Abstract From the Canadian patent

An aqueous resin emulsion is disclosed. The emulsion is obtained by emulsion copolymerizing a monomer mixture comprising (a) an acrylic acid fluoroalkyl ester derivative, (b) an acrylic acid derivative and (c) a, polyfunctional monomer for internal cross-linking in an, aqueous medium. The emulsion shows excellent polymerization stability in emulsion copolymerization for the preparation thereof and excellent dispersion stability in an aqueous medium. The resulting emulsion retains its stable dispersed state even when dispersed in a buffer solution or physiological saline and therefore, can advantageously be used in applications requiring dispersion stability of resin particles in an aqueous …

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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 July 23, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 23, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 22, 1985
GrantedJuly 23, 1991
Term endedJuly 23, 2008
Patent numberCA 1286823 C
Classification (IPC)C08F220/22

Timeline

Timeline From CIPO dates

19861989199219951998200120042007Application filedOct 22, 1985Patent grantedJuly 23, 1991Term endedJuly 23, 2008

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