High efficiency titanate polymerization catalyst
CA 1047020 A · Owner: The Dow Chemical Company · Inventors: Gessell, Donald E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compositions exhibiting high catalytic activity in the polymerization of .alpha.-olefins are provided by reacting an ester of titanium, a so-called titanate such as tetra(isopropxy)titanium, a hydrocarbon soluble organomagnesium compound or complex such as a complex of dialkyl magnesium and an alkyl aluminum, e.g. di-n-butylmagnesium?- 1/6 triethylaminum and an alkyl aluminum halide. Polymerization processes employing this catalyst composition do not require conventional catalyst removal steps in order to provide polymers having suitable color and other physical characteristics.
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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 23, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 23, 1996.
- 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.