Process for polymerizing olefins
CA 1305282 C · Owner: Mitsui Chemicals Inc. · Inventors: Toyota, Akinori; Kashiwa, Norio; Tsutsui, Toshiyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a process for polymerizing olefins using a catalyst composed of a transition metal catalyst component,an aluminoxane component and an organoaluminum component. In the process of this invention, the catalyst exhibits excellent polymerization activity with the use of a small amount of the aluminoxane. The polymerization process gives olefin polymers having a narrow molecular weight distribution and by the copolymerization of two or more olefins gives olefin, copolymers having a narrow molecular weight distribution and a narrow composition distribution.
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
- Granted July 14, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 14, 2009.
- 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.