Arylphenoxy catalyst system for producing ethylene homopolymer or copolymers of ethylene and alpha-olefins
CA 2615215 C · Owner: Sk Energy Co. Ltd. · Inventors: Woo, Tae Woo; Kim, Tae Jin; Kang, Sang Ook
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is an arylphenoxy catalyst system for producing an ethylene homopolymer or copolymers of ethylene and .alpha.-olefins and a method of , producing an ethylene homopolymer or copolymers of ethylene and .alpha.olefins having a high molecular weight under a high temperature solution polymerization condition using the same. The catalyst system includes a 4 group arylphenoxy-based transition metal catalyst and an aluminoxane cocatalyst or a boron compound cocatalyst. In the transition metal catalyst a , cyclopentadiene derivative and arylphenoxide as fixed ligands are located around the 4th group transition metal, arylphenoxide is substituted with at least one aryl derivative and …
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 October 14, 2005 and granted March 26, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 14, 2025.
- 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.