Aqueous dispersions of polyamides emulsified with rosin derivatives
CA 1332767 C · Owner: Wichelhaus, Jurgen · Inventors: Gierenz, Gerhard; Klauck, Wolfgang; Wichelhaus, Jurgen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Aqueous dispersions of thermoplastic polyamides based on dimeric fatty acids having melting points of at least 120°C or of mixtures of these thermoplastic polyamides, in which at least 20 % of the polyamide has a melting point of at least 120°C, and which contain salts of rosin derivatives having acid values of more than 120 as emulsifiers, show excellent properties as adhesives.
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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 October 25, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 25, 2011.
- 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
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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.