Improved weatherability of flame retardant polyolefin
CA 2364767 A1 · Owner: Zingg, Jurg · Inventors: Zingg, Jurg; Link, Jurgen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Stabilized thermoplastic polymer, especially polyolefin compositions comprising a flame, retardant selected from b1) melamin based flame retardants, or one of the compounds b2) bis-(hexachlorocyclopentadieno) cyclooctane b3) tris-(2,3-dibromopropyl)-isocyanurate b4) ethylene-bis-tetrabromophthalimide; b5) 1,2,5,6,9,10-hexabromo-cyclo-dodecan b6) ethane-1,2-bis(pentabromophenyl);, and c) a sterically hindered amine light stabilizer of the hydrocarbyloxyamine or hydroxyhydrocarbyloxyamine class, and optional further components combine optimum outdoor weathering stability and good, flame retardant properties.
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 December 10, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 10, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 10, 2023.
- 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.