Preparation of low and medium density ethylene polymer in fluid bed reactor
CA 1069648 A · Owner: Union Carbide Corporation · Inventors: Levine, Isaac J.; Karol, Frederick J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A supported catalyst is used in the low pressure catalytic copolymerization of ethylene with C3 to C6 .alpha.-olefins in a fluid bed reactor to produce polymers having a density of less than 0.941 and a melt index of >0.0 to at least about 2Ø The supported catalyst contains about 0.05 to 3.0 weight % of chromium about, 1.5 to 9.0 weight X of titanium and ?0.0 to about 2.5 weight % of fluorine. 1.
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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 January 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 1997.
- 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.