Water-absorbent polymers for producing flame-retardant compositions
CA 2584916 C · Owner: Champ, Samantha · Inventors: Champ, Samantha; Toennessen, Markus; Ziemer, Antje
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to water-absorbent polymers for producing flameretardant compositions, containing at least one ethylenically unsaturated monomer that has been incorporated by polymerisation and contains acidic groups. The acidic groups are present as 51 to 64 molar % carboxylate groups and the carboxylate groups at least partially comprise potassium ions as counterions. The invention also relates to a method for producing the waterabsorbent polymers and to the production of flame-retardant compositions 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
- Filed November 4, 2005 and granted September 17, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 4, 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.