Process for the preparation of alkanediols
CA 1332954 C · Owner: Drent, Eit · Inventors: Niele, Franciscus Gerardus Maria; Drent, Eit
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Process for the preparation of alkanediols having at least two carbon atoms separating the alcohol groups which comprises the reaction of, a) an alkynediol and/or an alkenediol of which the, alcohol groups are separated by at least two carbon atoms linked by the alkynic or alkenic bond respectively, and, b) hydrogen, in the presence of a catalyst composition based upon a compound of cationic palladium, a co-ordinating anion and a bidentate ligand of the general formula R1R2-M-R-M-R3R4, wherein M represents phosphorus arsenic or antimony, R is a bivalent organic bridging group containing from two to four carbon atoms in the bridge and R1, R2, R3 and R4 represent hydrocarbyl groups which may …
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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 November 8, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 8, 2011.
- 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.