Open chain alkoxyamine compounds and their use as polymerization regulators
CA 2337482 A1 · Owner: Lazzari, Dario · Inventors: Zink, Marie-Odile; Kramer, Andreas; Nesvadba, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a compound of formula (Ia) (Ib) or (Ic). The open , chain alkoxyamine compounds are useful for the polymerization of ethylenically unsaturated monomers. The compounds of the present invention provide polymeric resin products having low polydispersity. The polymerization process proceeds with enhanced monomer to polymer conversion efficiency. In particular this , invention relates to stable free radical-mediated polymerization processes which provide homopolymers, random copolymers block copolymers, multiblock , copolymers graft copolymers and the like, at enhanced rates of polymerization and enhanced monomer to polymer conversions.
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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 July 27, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 27, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 27, 2021.
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Timeline
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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.