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Expired Canadian patentCanada

Rheologically modified metal decorating and aqueous coating composition comprising water-soluble copolymer and aminoplast

CA 1059674 A · Owner: Rohm And Haas Company · Inventors: Brendley, William H. (Jr.); Haag, Thomas H.; Martorano, Richard

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Abstract From the Canadian patent

An aqueous alkaline thermosettable composition is disclosed comprising (A) as to 65 parts of a water-soluble tertiary amine salt of a water-insoluble copolymer of (C1 to C16) alkyl(meth)acrylate, an unsaturated acid, and a hydroxy ester of an unsaturated acid having a molecular weight of about 20,000 to 200,000,(B) 15 to 35 party of a water soluble urea- or triazineformaldehyde reaction product or methanol or ethanol ethers thereof or mixtures thereof, (C) 1 to 5 parts of a watersoluble polyethylene glycol, or poly(ethylene oxide) as a rheology modifier having an average molecular weight from about 400 to about 100,000,wherein the total parts of (A) and (B) is 100. These compositions can be …

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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 31, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 31, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJuly 31, 1979
Term endedJuly 31, 1996
Patent numberCA 1059674 A
Classification (IPC)C09D133/04 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedJuly 31, 1979Term endedJuly 31, 1996

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