Polymer aqueous dispersion for a barrier coating
CA 2558818 C · Owner: Cray Valley S.A. · Inventors: Saija, Leo; Betremieux, Isabelle; Duque, Baudouin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a polymer aqueous dispersion obtainable from a monomer mixture comprising by weight a) 100 parts of at least one type of ethylenically unsaturated monomer devoid of an ionic group b) from 0.5 to 15 parts at least one type of ethylenically unsaturated monomer carrier of at least one carboxylic and/or carboxylic anhydride function c) at least one type of ethylenically unsaturated monomer carrier of at least one second functionality selected from: phosphate phosphonate, phosphinate in a such quantity that a ratio c/(b+c) ranges from 0,05 to 0,4 d) from 0 to 2 parts of at least one type of ethylenically unsaturated monomer carrier of at least one alcoxysilane function …
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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
- Filed March 3, 2005 and granted December 10, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 3, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.