DD141832A1 - Verfahren und vorrichtung zur herstellung von l-ascorbinsaeure - Google Patents
Verfahren und vorrichtung zur herstellung von l-ascorbinsaeure Download PDFInfo
- Publication number
- DD141832A1 DD141832A1 DD20877378A DD20877378A DD141832A1 DD 141832 A1 DD141832 A1 DD 141832A1 DD 20877378 A DD20877378 A DD 20877378A DD 20877378 A DD20877378 A DD 20877378A DD 141832 A1 DD141832 A1 DD 141832A1
- Authority
- DD
- German Democratic Republic
- Prior art keywords
- acid
- derivatives
- butanol
- pressure
- removal
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
- C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
- C07D307/34—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
- C07D307/56—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D307/62—Three oxygen atoms, e.g. ascorbic acid
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Furan Compounds (AREA)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DD20877378A DD141832A1 (de) | 1978-10-31 | 1978-10-31 | Verfahren und vorrichtung zur herstellung von l-ascorbinsaeure |
SU797770821A SU1310398A1 (ru) | 1978-10-31 | 1979-09-26 | Способ получени @ -аскорбиновой кислоты |
DE19792939052 DE2939052A1 (de) | 1978-10-31 | 1979-09-27 | Verfahren und vorrichtung zur herstellung von l-ascorbinsaeure |
GB7936848A GB2034315A (en) | 1978-10-31 | 1979-10-24 | Production of L-ascorbic Acid |
FR7926878A FR2440366A1 (fr) | 1978-10-31 | 1979-10-30 | Procede et dispositif pour la preparation de l'acide l-ascorbique |
HUJE000896 HU182734B (en) | 1978-10-31 | 1979-10-31 | Process and apparatus for producing l-ascorbinic acid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DD20877378A DD141832A1 (de) | 1978-10-31 | 1978-10-31 | Verfahren und vorrichtung zur herstellung von l-ascorbinsaeure |
Publications (1)
Publication Number | Publication Date |
---|---|
DD141832A1 true DD141832A1 (de) | 1980-05-21 |
Family
ID=5515085
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DD20877378A DD141832A1 (de) | 1978-10-31 | 1978-10-31 | Verfahren und vorrichtung zur herstellung von l-ascorbinsaeure |
Country Status (6)
Country | Link |
---|---|
DD (1) | DD141832A1 (fr) |
DE (1) | DE2939052A1 (fr) |
FR (1) | FR2440366A1 (fr) |
GB (1) | GB2034315A (fr) |
HU (1) | HU182734B (fr) |
SU (1) | SU1310398A1 (fr) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4845246A (en) * | 1987-06-15 | 1989-07-04 | Takeda Chemical Industries, Ltd. | Ascorbic acid ester |
US5137723A (en) * | 1989-05-19 | 1992-08-11 | Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo | α-Glycosyl-L-ascorbic acid, and its preparation and uses |
JPH08176133A (ja) * | 1994-12-26 | 1996-07-09 | Takeda Chem Ind Ltd | L−アスコルビン酸の精製法 |
DE19734086C1 (de) * | 1997-08-07 | 1998-08-13 | Merck Patent Gmbh | Verfahren zur Herstellung von L-Ascorbinsäure |
DE19904821C1 (de) * | 1999-02-05 | 2000-07-06 | Merck Patent Gmbh | Verfahren zur Herstellung von L-Ascobinsäure |
DE10022518A1 (de) * | 2000-05-10 | 2001-11-15 | Basf Ag | Verfahren zur Herstellung von L-Ascorbinsäure durch Lactonisierung von 2-Keto-L-gulonsäure oder 2-Keto-L-gulonsäureestern |
DE60110932T2 (de) * | 2000-12-22 | 2006-01-19 | Eastman Chemical Co., Kingsport | Kontinuierliches verfahren zur herstellung von l-ascorbinsäure |
ATE303373T1 (de) | 2000-12-22 | 2005-09-15 | Eastman Chem Co | Verfahren zur herstellung von ascorbinsäure in gegenwart eines sulfits |
DE10115325A1 (de) * | 2001-03-28 | 2002-10-17 | Bosch Gmbh Robert | Kraftstoff-Einspritzvorrichtung, insbesondere Injektor, für Brennkraftmaschinen |
US6740762B2 (en) | 2001-08-24 | 2004-05-25 | Eastman Chemical Company | Process for ascorbic acids using alkaline earth silicate catalysts |
US6716997B1 (en) | 2001-10-09 | 2004-04-06 | Eastman Chemical Company | Systems and methods for generation of ascorbic acid with reduced color |
CN110372649A (zh) * | 2019-08-08 | 2019-10-25 | 安徽丰原发酵技术工程研究有限公司 | 一种以古龙酸为原料的一步酸法制备维生素c的方法 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2462251A (en) * | 1945-05-16 | 1949-02-22 | Merck & Co Inc | Process for preparing ascorbic acids |
-
1978
- 1978-10-31 DD DD20877378A patent/DD141832A1/de not_active IP Right Cessation
-
1979
- 1979-09-26 SU SU797770821A patent/SU1310398A1/ru active
- 1979-09-27 DE DE19792939052 patent/DE2939052A1/de not_active Withdrawn
- 1979-10-24 GB GB7936848A patent/GB2034315A/en not_active Withdrawn
- 1979-10-30 FR FR7926878A patent/FR2440366A1/fr not_active Withdrawn
- 1979-10-31 HU HUJE000896 patent/HU182734B/hu unknown
Also Published As
Publication number | Publication date |
---|---|
DE2939052A1 (de) | 1980-05-14 |
FR2440366A1 (fr) | 1980-05-30 |
GB2034315A (en) | 1980-06-04 |
HU182734B (en) | 1984-03-28 |
SU1310398A1 (ru) | 1987-05-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ENJ | Ceased due to non-payment of renewal fee |