Aqueous dispersion of fluoropolymers of varying particle size
CA 2295147 A1 · Owner: Dyneon Gmbh · Inventors: Bladel, Hermann; Grossmann, Gerd; Lohr, Gernot
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to aqueous dispersions of fluoropolymers obtained by emulsion polymerisation, containing at least one fluoropolymer A) with a mean particle size (number average) of at least 200 mn and at least one fluoropolymer B) with a mean particle size (number average) of no more than 100 nm. One of the components A) and B) is a thermoplastic material and the other component cannot be processed from its melted form. In the dispersion as a whole, numeric distribution of particle diameter is non-unimodal. Said dispersions are suitable for soaking, impregnating or coating surfaces for , example fibres or flat structures made of fibres or porous substances in , particular for …
Read the whole patent
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 June 18, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 18, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 18, 2020.
- 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.