HK180496A - Manufacture of high-purity hydroxyacetic acid - Google Patents
Manufacture of high-purity hydroxyacetic acidInfo
- Publication number
- HK180496A HK180496A HK180496A HK180496A HK180496A HK 180496 A HK180496 A HK 180496A HK 180496 A HK180496 A HK 180496A HK 180496 A HK180496 A HK 180496A HK 180496 A HK180496 A HK 180496A
- Authority
- HK
- Hong Kong
- Prior art keywords
- hydroxyacetic acid
- purity
- manufacture
- acid
- crude
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/47—Separation; Purification; Stabilisation; Use of additives by solid-liquid treatment; by chemisorption
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US58562990A | 1990-09-20 | 1990-09-20 | |
PCT/US1991/006626 WO1992005138A1 (en) | 1990-09-20 | 1991-09-18 | Manufacture of high-purity hydroxyacetic acid |
Publications (1)
Publication Number | Publication Date |
---|---|
HK180496A true HK180496A (en) | 1996-10-04 |
Family
ID=24342260
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HK180496A HK180496A (en) | 1990-09-20 | 1996-09-26 | Manufacture of high-purity hydroxyacetic acid |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0552255B1 (ja) |
JP (1) | JPH06501268A (ja) |
AT (1) | ATE137488T1 (ja) |
CA (1) | CA2091906A1 (ja) |
DE (1) | DE69119234T2 (ja) |
HK (1) | HK180496A (ja) |
WO (1) | WO1992005138A1 (ja) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19600620C1 (de) * | 1996-01-10 | 1997-04-17 | Hoechst Ag | Verfahren zur Darstellung einer besonders reinen Glykolsäure |
ES2283440T3 (es) * | 2000-09-15 | 2007-11-01 | Purac Biochem B.V. | Metodo para la purificacion de acido lactico a escala industrial. |
AU2002212811A1 (en) * | 2000-09-15 | 2002-03-26 | Purac Biochem B.V. | Method for the purification of an alpha-hydroxy acid on an industrial scale |
ATE321018T1 (de) | 2000-09-15 | 2006-04-15 | Purac Biochem Bv | Verfahren zur reinigung von alpha-hydroxysäuren auf industrieller basis |
JP3989002B2 (ja) * | 2002-01-29 | 2007-10-10 | 旭化成ケミカルズ株式会社 | 高純度のグリコール酸結晶の製造方法 |
EP1669459B1 (en) * | 2003-09-30 | 2014-10-22 | Ajinomoto Co., Inc. | Method of purifying succinic acid from fermentation liquid |
US20050209328A1 (en) * | 2004-03-19 | 2005-09-22 | Allgood Charles C | Alphahydroxyacids with ultra-low metal concentration |
JP5355841B2 (ja) * | 2004-12-17 | 2013-11-27 | 株式会社クレハ | グリコール酸の連続精製方法、グリコリドの製造方法およびポリグリコール酸の製造方法 |
EP2361900B1 (en) | 2005-05-27 | 2015-04-08 | Asahi Kasei Chemicals Corporation | Method for producing glycolic acid |
CN101277920B (zh) * | 2005-10-26 | 2013-06-19 | 三井化学株式会社 | 乙醇酸的制备方法 |
JP5280007B2 (ja) | 2006-08-02 | 2013-09-04 | 株式会社クレハ | ヒドロキシカルボン酸の精製方法、環状エステルの製造方法およびポリヒドロキシカルボン酸の製造方法 |
US7439391B2 (en) | 2006-10-12 | 2008-10-21 | E.I. Du Pont De Nemours And Company | Multi-stage glycolic acid crystallization |
FR2974804B1 (fr) | 2011-05-06 | 2013-05-03 | Roquette Freres | Procede de preparation d'un acide glycolique de haute purete |
FR2974803B1 (fr) | 2011-05-06 | 2013-05-03 | Roquette Freres | Procede de preparation d'un acide glycolique partiellement purifie |
FR2974802B1 (fr) | 2011-05-06 | 2013-09-13 | Roquette Freres | Procede de purification de l'acide glycolique par distillation |
FR3001453B1 (fr) | 2013-01-30 | 2015-03-06 | Roquette Freres | Procede de purification de l'acide glycolique par traitement thermique |
GB201505977D0 (en) * | 2015-04-08 | 2015-05-20 | Johnson Matthey Davy Technologies Ltd | Catalyst system and process |
CN109694318A (zh) * | 2017-10-20 | 2019-04-30 | 中国石油化工股份有限公司 | 生产高纯度乙醇酸的方法 |
CN112174808A (zh) * | 2020-10-30 | 2021-01-05 | 河北金谷再生资源开发有限公司 | 一种乙醇酸脱盐装置及脱盐工艺 |
CN115974830B (zh) * | 2022-12-30 | 2024-06-11 | 重庆江际材料技术有限公司 | 一种高纯度低成本的乙交酯连续制备方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2037654A (en) * | 1933-05-25 | 1936-04-14 | Du Pont | Process for the preparation of organic acids from ketones |
US2152852A (en) * | 1936-12-31 | 1939-04-04 | Du Pont | Process for manufacture of glycolic acid |
US2153064A (en) * | 1937-11-03 | 1939-04-04 | Du Pont | Process for the preparation of glycolic acid |
DK129933B (da) * | 1967-02-14 | 1974-12-02 | American Cyanamid Co | Fremgangsmåde til rensning af omkrystalliseret delvis renset glycolid. |
US3859349A (en) * | 1973-02-15 | 1975-01-07 | Du Pont | Purification of hydroxyacetic acid |
US4140866A (en) * | 1978-03-30 | 1979-02-20 | Ppg Industries, Inc. | Preparation of sulfate free glycolic acid ester |
-
1991
- 1991-09-18 DE DE69119234T patent/DE69119234T2/de not_active Expired - Lifetime
- 1991-09-18 CA CA002091906A patent/CA2091906A1/en not_active Abandoned
- 1991-09-18 EP EP91918973A patent/EP0552255B1/en not_active Expired - Lifetime
- 1991-09-18 AT AT91918973T patent/ATE137488T1/de not_active IP Right Cessation
- 1991-09-18 JP JP3517252A patent/JPH06501268A/ja active Pending
- 1991-09-18 WO PCT/US1991/006626 patent/WO1992005138A1/en active IP Right Grant
-
1996
- 1996-09-26 HK HK180496A patent/HK180496A/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE69119234D1 (de) | 1996-06-05 |
ATE137488T1 (de) | 1996-05-15 |
CA2091906A1 (en) | 1992-03-21 |
DE69119234T2 (de) | 1996-11-28 |
EP0552255B1 (en) | 1996-05-01 |
WO1992005138A1 (en) | 1992-04-02 |
EP0552255A1 (en) | 1993-07-28 |
JPH06501268A (ja) | 1994-02-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PF | Patent in force | ||
PE | Patent expired |
Effective date: 20110917 |