Process for producing ethylene copolymer by gaseous phase polymerization
CA 1164598 A · Owner: Mitsui Petrochemical Industries, Ltd. · Inventors: Yoshida, Junichi; Yamamoto, Ryoichi; Kato, Akifumi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for producing an ethylene copolymer which comprises polymerizing a predominant amount Or ethylene and a minor amount or an alpha-olefln having 4 to 10 carbon atoms in the amount phase in the presence of a catalyst composed Or (A) a transition metal catalyst component and (D) an organometallic compound Or a metal Or Croups I to III Or the periodic table; characterized in that the copolymerlzation is carried out under the following conditions (i) and (ii) (i) at least l mole, per mole of ethylene of a, gaseous saturated hydrocarbon having 3to 6 carbon atoms is caused to be present in the gaseous phase copolymerization system, and, (ii) the gaseous mixture containing the unreacted …
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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
- Granted March 27, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 27, 2001.
- 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
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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.