Polymer composition
CA 2449557 A1 · Owner: Kaneka Corporation · Inventors: Kadokura, Mamoru; Yui, Koji; Saegusa, Kazunori
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a vinyl chloride resin composition which is excellent in impact resistance, gelation properties and heat stability is reduced in , the load on a molding machine and gives articles excellent in appearance and dimensional stability, particularly a core-shell polymer composition for modifying vinyl chloride resins which is capable of giving the above vinyl chloride resin composition, namely a core-shell polymer composition which comprises (A) 85 to 99.5 wt% of a core-shell polymer containing a rubbery polymer and (B) 15 to 0.5 wt% of an acid or an anionic surfactant and is characterized in that the component of the polymer composition which is soluble in methyl …
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 6, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 6, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 6, 2024.
- 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.