Trialkyl aluminum cocatalyst
CA 1162906 A · Owner: Exxon Research And Engineering Company · Inventors: Langer, Arthur W. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A new improved catalyst system for alphaolefin type polymerizations, includes at least one metal alkyl compound having the formula RnMR'3-n in combination with a Group IVB-VIII transition metal compound on a support and at least one Lewis base wherein R is selected from the group consisting of C3 to C20 secondary or tertiary alkyl, cycloalkyl, alkenyl or aralkyl groups; R' is selected from the group consisting of C1 to C20 primary alkyl, alkenyl or aralkyl groups, or a hydride M is, selected from the group consisting of aluminum gallium, or indium; and n = 0-3. The improved catalyst system provides polymers having increased isotactic stereoregularity as well as lower catalyst residue.
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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 28, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 28, 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.