Continuous process for producing 1,2-diols
CA 1312095 C · Owner: Siegmeier, Rainer · Inventors: Maurer, Helmut; Siegmeier, Rainer; Prescher, Gunther
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Continuous production of 1,2-diols by saponification of aliphatic, linear or branched epoxides containing 8 to 30 carbon and high-molecular cycloaliphatic epoxides with water and an acid catalyst at pressures of 1 to 5 bars using a, vapour and liquid mixture of a solubilizing intermediary being stationary in a column. The yields obtained are high while the degree of purity is good. The water used can be recycled as such.
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 December 29, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 29, 2009.
- 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.