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Expired Canadian patentCanada

Vinyl ester resin compositions containing dicyclopentadiene alkenoate

CA 1109581 A · Owner: The Dow Chemical Company · Inventors: Nelson, Donald L.

CIPO record

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Abstract From the Canadian patent

This invention is directed to a thermosetting resin composition comprising from 80 to 30 percent by weight of a terminally unsaturated. vinyl ester resin and from 20 to 70 percent by weight of an ethylenically unsaturated monomer. The invention is characterized in that the ethylenically unsaturated monomer comprises from 5 to 90 percent by weight of a dicyclopentadiene alkenoate and from 95 to 10 percent by weight of a vinyl aromatic monomer. The thermosetting resin composition is useful in preparing laminates, molded articles and coatings.

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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 September 22, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 22, 1998.
  • 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 25, 1978
GrantedSeptember 22, 1981
Term endedSeptember 22, 1998
Patent numberCA 1109581 A
Classification (IPC)C08F283/00 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedSep 25, 1978Patent grantedSep 22, 1981Term endedSep 22, 1998

Sources & verification

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