Adhesive dispersions
CA 1306820 C · Owner: Ball, Peter · Inventors: Weissgerber, Rudolf; Stallbauer, Fritz; Ball, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel pressure-sensitive aqueous adhesive dispersion comprising 40 to 65% by weight, based on the dispersion weight of, a copolymer produced by radical emulsion polymerization of ethylene, vinyl esters of saturated carboxylic acids of 2 to 12 carbon atoms, ethylenically unsaturated carboxylic acids ethylenically, unsaturated hydroxyalkyl functional compounds optionally present, (meth)acrylic acid esters with alkyl of 4 to 12 carbon atoms and optionally present mono- or poly-ethylenlcally unsaturated compounds having a second order transition temperature of -20 to -60°C and a K value of 50 to 180, characterized in that the copolymer was obtained by polymerization of, a) 10 - 45 % by weight …
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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 August 25, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 25, 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.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.