Process for producing polyalcohols, particularly xylitol
CA 1108649 A · Owner: Benckiser-Knapsack G.M.B.H. · Inventors: Riehm, Theodor; Spatz, Wilhelm; Auel, Theodor
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a process for producing xylitol comprising the stepsof: decomposing the wood of deciduous trees or annual plants with dilute mineral acid at elevated temperatures to produce a solution containing principally xylose sugar with minor proportions of acetic acid and mineral salts; subjecting the sugar solution to ionexchange treatment and decolorization in an exchanger; hydrogenating the sugar solution to produce a polyalcohol solution containing principally xylitol; subjecting the polyalcohol solution to an ion exchange treatment; and thereafter recovering xylitol from the solution; said exchange treatment of the sugar solution and exchange treatment of the …
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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 September 8, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 8, 1998.
- 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.