Fluorocarbon-grafted polysiloxanes
CA 2596106 C · Owner: Severac, Romain · Inventors: Severac, Romain; Puchois, Emmanuel Abel; Perdon, Matthieu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition useful to provide oil repellency water repellency, and stain , resistance to substrates comprising a polymer prepared by contacting a polytluoroalkyl sulfonyl halide with a compound of Formula II: (E-(O)q)3Si-O- (Si(R2)2-O)m Si(R3-NHR4)(R2)On-Si-((O)q-E)3 Formula III: HR4N-R3-Si(R2)2-O-, Si(R2)2-Om Si(R3-NHR4)(R2)On-Si-(R2)2-R3-NHR4 or Formula IV: HR4N-R3- Si(R2)2-O-Si(R2)2-OmSi-((O)q-E)3 , wherein each R2 is independently a C1 to C8 alkyl, each R3 is independently a divalent group containing carbon oxygen, and optionally at least one of nitrogen oxygen and sulfur each R4 is , independently H or C1 to C8 alkyl each E is independently a C1 to C8 branched or linear alkyl, …
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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 January 31, 2006 and granted September 10, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 31, 2026.
- 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.