Process for the preparation of unsaturated compounds
CA 1269398 C · Owner: Shell Canada Limited · Inventors: Drent, Eit
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The dimerization of acrylate esters and of ethene and the codimerization of acrylate esters with C2-4-alkenes or 1,3butadiene and of 1,3-butadiene with ethene in the presence of: (a) a Pd and/or Ru compound, (b) a compound containing one trivalent N or P atom and, (c) an Ag and/or Cu salt, yields at an increased reaction rate dimers of high linearity when a quinone is also present.
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 May 22, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 22, 2007.
- 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.