ATE151T1 - PROCESSES FOR OBTAINING POLYALCOHOLS, ESPECIALLY XYLIT. - Google Patents
PROCESSES FOR OBTAINING POLYALCOHOLS, ESPECIALLY XYLIT.Info
- Publication number
- ATE151T1 ATE151T1 AT79102074T AT79102074T ATE151T1 AT E151 T1 ATE151 T1 AT E151T1 AT 79102074 T AT79102074 T AT 79102074T AT 79102074 T AT79102074 T AT 79102074T AT E151 T1 ATE151 T1 AT E151T1
- Authority
- AT
- Austria
- Prior art keywords
- sugar solution
- solution
- polyalcohol
- exchanger
- ion exchanger
- Prior art date
Links
- 150000005846 sugar alcohols Polymers 0.000 title abstract 7
- 238000000034 method Methods 0.000 title abstract 2
- HEBKCHPVOIAQTA-SCDXWVJYSA-N xylitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)CO HEBKCHPVOIAQTA-SCDXWVJYSA-N 0.000 title abstract 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 abstract 6
- 239000002253 acid Substances 0.000 abstract 3
- 238000005984 hydrogenation reaction Methods 0.000 abstract 2
- 238000005342 ion exchange Methods 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 239000002023 wood Substances 0.000 abstract 2
- 238000002425 crystallisation Methods 0.000 abstract 1
- 230000008025 crystallization Effects 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 230000007062 hydrolysis Effects 0.000 abstract 1
- 238000006460 hydrolysis reaction Methods 0.000 abstract 1
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 1
- HEBKCHPVOIAQTA-UHFFFAOYSA-N meso ribitol Natural products OCC(O)C(O)C(O)CO HEBKCHPVOIAQTA-UHFFFAOYSA-N 0.000 abstract 1
- 239000011707 mineral Substances 0.000 abstract 1
- 238000006386 neutralization reaction Methods 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- 235000010447 xylitol Nutrition 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C13—SUGAR INDUSTRY
- C13K—SACCHARIDES OBTAINED FROM NATURAL SOURCES OR BY HYDROLYSIS OF NATURALLY OCCURRING DISACCHARIDES, OLIGOSACCHARIDES OR POLYSACCHARIDES
- C13K13/00—Sugars not otherwise provided for in this class
- C13K13/002—Xylose
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/132—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
- C07C29/88—Separation; Purification; Use of additives, e.g. for stabilisation by treatment giving rise to a chemical modification of at least one compound
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C31/00—Saturated compounds having hydroxy or O-metal groups bound to acyclic carbon atoms
- C07C31/18—Polyhydroxylic acyclic alcohols
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
- C07B2200/00—Indexing scheme relating to specific properties of organic compounds
- C07B2200/07—Optical isomers
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Saccharide Compounds (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Medicines Containing Plant Substances (AREA)
- Compounds Of Unknown Constitution (AREA)
Abstract
A process for producing polyalcohols such as xylite from deciduous wood wherein the wood is hydrolyzed with dilute mineral acid to produce a sugar solution which is deionized and decolorized in an ion exchanger and hydrogenated to produce a polyalcohol solution which is also decolorized and deionized by ion exchange and from which pure polyalcohol is thereafter separated by crystallization, further comprising dispensing with neutralization of the acid in the sugar solution after hydrolysis, deionizing and decolorizing both the sugar solution and the polyalcohol solution in the same ion exchanger, eluting acetic acid taken up by the ion exchanger from the polyalcohol solution and displacing polyalcohol solution from the exchanger with the acid containing sugar solution, washing the ion exchanger with water only after ion exchange of the sugar solution, removing the bulk of the acetic acid from the sugar solution by evaporating the sugar solution to a higher concentration than the concentration customarily utilized for hydrogenation, and rediluting the sugar solution prior to hydrogenation with the exchanger wash water.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19782827477 DE2827477A1 (en) | 1978-06-22 | 1978-06-22 | METHOD FOR PRODUCING POLYALCOHOLS, IN PARTICULAR XYLITE |
| EP79102074A EP0006592B1 (en) | 1978-06-22 | 1979-06-22 | Process for preparing polyhydric alcohols and especially xylitol |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ATE151T1 true ATE151T1 (en) | 1981-09-15 |
Family
ID=6042497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT79102074T ATE151T1 (en) | 1978-06-22 | 1979-06-22 | PROCESSES FOR OBTAINING POLYALCOHOLS, ESPECIALLY XYLIT. |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US4239922A (en) |
| EP (1) | EP0006592B1 (en) |
| JP (1) | JPS552690A (en) |
| AT (1) | ATE151T1 (en) |
| BR (1) | BR7903751A (en) |
| CA (1) | CA1108649A (en) |
| DE (2) | DE2827477A1 (en) |
| DK (1) | DK262179A (en) |
| FI (1) | FI791940A7 (en) |
| NO (1) | NO792090L (en) |
| ZA (1) | ZA793038B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR0301678A (en) * | 2003-06-10 | 2005-03-22 | Getec Guanabara Quimica Ind S | Process for the production of crystalline xylose from sugarcane bagasse, high purity crystalline xylose produced by said process, process for the production of crystalline xylitol from the high purity crystalline xylose and thus obtained |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2917390A (en) * | 1959-12-15 | apel etal | ||
| GB782165A (en) * | 1955-02-04 | 1957-09-04 | Gevaert Photo Prod Nv | Improvements in or relating to photographic films |
| DE1165565B (en) * | 1959-05-11 | 1964-03-19 | Atlas Powder Co | Process for purifying polyhydric alcohols |
| US3558725A (en) * | 1968-02-27 | 1971-01-26 | Eisai Co Ltd | Preparation of xylitol |
| US3627636A (en) * | 1969-10-02 | 1971-12-14 | Hoffmann La Roche | Manufacture of xylitol |
| US3579380A (en) * | 1969-12-04 | 1971-05-18 | Sued Chemie Ag | Process for the production of xylose solutions |
| US3980719A (en) * | 1970-02-09 | 1976-09-14 | Sud-Chemie Ag | Process for obtaining xylitol from natural products containing xylan |
| US3784408A (en) * | 1970-09-16 | 1974-01-08 | Hoffmann La Roche | Process for producing xylose |
| ZA742438B (en) * | 1973-04-25 | 1975-05-28 | Suomen Sokeri Oy | Process for making xylose and xylitol |
| US4066711A (en) * | 1976-03-15 | 1978-01-03 | Suomen Sokeri Osakeyhtio (Finnish Sugar Company) | Method for recovering xylitol |
-
1978
- 1978-06-22 DE DE19782827477 patent/DE2827477A1/en not_active Withdrawn
-
1979
- 1979-06-13 US US06/048,074 patent/US4239922A/en not_active Expired - Lifetime
- 1979-06-13 BR BR7903751A patent/BR7903751A/en unknown
- 1979-06-18 FI FI791940A patent/FI791940A7/en not_active Application Discontinuation
- 1979-06-19 ZA ZA793038A patent/ZA793038B/en unknown
- 1979-06-21 NO NO792090A patent/NO792090L/en unknown
- 1979-06-21 JP JP7762579A patent/JPS552690A/en active Pending
- 1979-06-21 DK DK262179A patent/DK262179A/en not_active Application Discontinuation
- 1979-06-22 EP EP79102074A patent/EP0006592B1/en not_active Expired
- 1979-06-22 AT AT79102074T patent/ATE151T1/en not_active IP Right Cessation
- 1979-06-22 DE DE7979102074T patent/DE2960630D1/en not_active Expired
- 1979-06-22 CA CA330,433A patent/CA1108649A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2827477A1 (en) | 1980-01-17 |
| BR7903751A (en) | 1980-02-05 |
| NO792090L (en) | 1979-12-28 |
| FI791940A7 (en) | 1981-01-01 |
| EP0006592B1 (en) | 1981-08-12 |
| ZA793038B (en) | 1980-07-30 |
| EP0006592A1 (en) | 1980-01-09 |
| CA1108649A (en) | 1981-09-08 |
| US4239922A (en) | 1980-12-16 |
| DE2960630D1 (en) | 1981-11-12 |
| DK262179A (en) | 1979-12-23 |
| JPS552690A (en) | 1980-01-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| REN | Ceased due to non-payment of the annual fee |