A thermoplastic flameproof molding composition based on branched polycarbonates with improved mechanical properties
CA 2622186 C · Owner: Eckel, Thomas · Inventors: Wittmann, Dieter; Moulinie, Pierre; Buchholz, Vera
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A thermoplastic molding composition suitable for preparing articles by thermoforming is disclosed. The molding composition that comprise A) branched aromatic poly(ester)carbonate, B) graft polymer C) an optional , vinyl(co)polymer and or polyalkylene terephthalate D) at least one flame , retarding phosphorous compound selected from the group consisting of mono- and oligomeric phosphorus and phosphonic acid esters phosphonate amines and , phosphazenes and E) talc is characterized in that its flexural modulus at room temperature is at least 3000 N/mm2 and that its falling dart energy at break, at -30~C, is at least 40.0 J. Sheets extruded of the composition are suitable for making useful …
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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 September 1, 2006 and granted April 21, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 1, 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.