Thermoplastic compositions having improved melt flow
CA 2048566 A1 · Owner: Lundy, Charles E. · Inventors: Jorissen, Steven A.; Pyles, Robert A.; Krishnan, Sivaram
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Mo-3483, PC-241, THERMOPLASTIC COMPOSITIONS HAVING IMPROVED MELT FLOW ABSTRACT OF THE DISCLOSURE, Thermoplastic molding compositions containing at least one member selected from among aromatic polycarbonate and aromatic polyestercarbonate resins were plasticized by incorporating therewith a small amount of a copolyetherester conforming to wherein x is about 2 to 15, n is about 3 to 10 and y is about 1 to 10. A and A' are end groups which may independently be a hydroxy group, a carboxy radical, a C1-C8 alkoxy or a C6-C10 aryloxy group. The compositions of the invention are characterized by their improved processability.
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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 August 7, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 7, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 7, 2013.
- 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.