Method for preparing a magnesium halide support for catalysts
CA 1161820 A · Owner: Stauffer Chemical Company · Inventors: Triplett, Kelly B.; Greco, Carl C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for preparing an effective support for the titanium halide component of a coordinate complex catalyst for the polymerization of alphaolefins comprises the steps of:, a) intimately contacting a magnesium or manganese chloride or bromide with a drying agent at an elevated temperature, b) milling the magnesium or manganese chloride or bromide so as to activate its surface; and c) repeat contacting step a) and milling step b) for two or more cycles, whereby the effective support is produced.
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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 February 7, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 7, 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
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.