Alpha olefin polymerization catalyst and preparation thereof
CA 1109447 A · Owner: National Distillers And Chemical Corporation · Inventors: Katzen, Stanley J.; Rekers, Louis J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An alpha olefin polymerized catalyst and the preparation thereof. The catalyst comprises a silica xerogel having a surface area in the range of 200 to 500 m2/g and a pore volume greater than about 2.0 cc/g, a major portion of the pore volume being provided by pores having diameters in the range of 300 to 600 .ANG. said xerogel comprising from 0.25 to 6.0 weight percent water and the level of water being regulated within ? 0.15 weight percent.
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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 September 22, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 22, 1998.
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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.