Polymerization process and product
CA 1183647 A · Owner: El Paso Polyolefins Company · Inventors: Zukowski, Edward A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Improved catalyst productivity rates are obtained in a propylene polymerization process conducted at sufficient pressures to maintain propylene in liquid phase by carrying, out the polymerization in the presence of small amounts of ethylene and or a catalyst system containing trialkylaluminum component and a magn? alide supported catalyst component. The polymer produced by the process exhibits improved physical and mechanical properties.
Read the whole patent
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 5, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 5, 2002.
- 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.