IT1002937B - Purificazione di acido idrossiace tico - Google Patents
Purificazione di acido idrossiace ticoInfo
- Publication number
- IT1002937B IT1002937B IT7448373A IT4837374A IT1002937B IT 1002937 B IT1002937 B IT 1002937B IT 7448373 A IT7448373 A IT 7448373A IT 4837374 A IT4837374 A IT 4837374A IT 1002937 B IT1002937 B IT 1002937B
- Authority
- IT
- Italy
- Prior art keywords
- purification
- hydroxyacetic acid
- hydroxyacetic
- acid
- Prior art date
Links
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 title 2
- 229960004275 glycolic acid Drugs 0.000 title 1
- 238000000746 purification Methods 0.000 title 1
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 (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US332578A US3859349A (en) | 1973-02-15 | 1973-02-15 | Purification of hydroxyacetic acid |
Publications (1)
Publication Number | Publication Date |
---|---|
IT1002937B true IT1002937B (it) | 1976-05-20 |
Family
ID=23298857
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT7448373A IT1002937B (it) | 1973-02-15 | 1974-02-14 | Purificazione di acido idrossiace tico |
Country Status (7)
Country | Link |
---|---|
US (1) | US3859349A (it) |
JP (1) | JPS49124025A (it) |
BE (1) | BE810280A (it) |
FR (1) | FR2217307B3 (it) |
GB (1) | GB1429591A (it) |
IT (1) | IT1002937B (it) |
NL (1) | NL7401188A (it) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3118953A1 (de) * | 1981-05-13 | 1982-12-09 | Hoechst Ag, 6000 Frankfurt | Verfahren zur reingung von wasser, salze glykolationen und organische loesemittel enthaltenden gemischen und die verwendung des verfahrens bei der herstellung von natriumcarboxymethylgruppen aufweisenden polysaccharidethern |
JPS63264548A (ja) * | 1987-04-22 | 1988-11-01 | Mitsui Toatsu Chem Inc | 乳酸の精製方法 |
DE69119234T2 (de) * | 1990-09-20 | 1996-11-28 | Du Pont | Verfahren zur herstellung von reiner hydroxyessigsäure |
US5434301A (en) * | 1993-09-01 | 1995-07-18 | Henkel Corporation | Methods for recovery of acids |
JPH09286748A (ja) * | 1996-04-19 | 1997-11-04 | Dalian Chem Ind Co Ltd | アルコール水溶液の脱水精製方法 |
TW200407300A (en) * | 2002-07-12 | 2004-05-16 | Nippon Catalytic Chem Ind | Process for producing diol derivative |
US20050209328A1 (en) * | 2004-03-19 | 2005-09-22 | Allgood Charles C | Alphahydroxyacids with ultra-low metal concentration |
CN101277920B (zh) * | 2005-10-26 | 2013-06-19 | 三井化学株式会社 | 乙醇酸的制备方法 |
JP4901293B2 (ja) * | 2006-04-28 | 2012-03-21 | 旭化成ケミカルズ株式会社 | バイオ法グリコール酸水溶液又はグリコール酸アンモニウム水溶液の脱色方法 |
US9227896B2 (en) | 2010-08-18 | 2016-01-05 | Eastman Chemical Company | Process for the separation and purification of a mixed diol stream |
US8829248B2 (en) | 2010-08-18 | 2014-09-09 | Eastman Chemical Company | Method for recovery and recycle of ruthenium homogeneous catalysts |
US8466328B2 (en) | 2010-08-18 | 2013-06-18 | Eastman Chemical Company | Method for recovery and recycle of ruthenium homogeneous catalysts |
US8785686B2 (en) | 2010-09-23 | 2014-07-22 | Eastman Chemical Company | Process for recovering and recycling an acid catalyst |
US8709376B2 (en) | 2010-09-23 | 2014-04-29 | Eastman Chemical Company | Process for recovering and recycling an acid catalyst |
EP2831040A1 (en) | 2012-03-27 | 2015-02-04 | Eastman Chemical Company | Process for recovering and recycling an acid catalyst |
US8829234B2 (en) | 2012-03-27 | 2014-09-09 | Eastman Chemical Company | Hydrocarboxylation of formaldehyde in the presence of a higher order carboxylic acid and heterogeneous catalyst |
US8703999B2 (en) | 2012-03-27 | 2014-04-22 | Eastman Chemical Company | Hydrocarboxylation of methylene dipropionate in the presence of propionic acid and a heterogeneous catalyst |
US8927766B2 (en) | 2012-03-27 | 2015-01-06 | Eastman Chemical Company | Hydrocarboxylation of methylene dipropionate in the presence of a propionic acid and a homogeneous catalyst |
US8765999B2 (en) | 2012-03-27 | 2014-07-01 | Eastman Chemical Company | Hydrocarboxylation of formaldehyde in the presence of a higher order carboxylic acid and a homogeneous catalyst |
US9114328B2 (en) | 2012-05-16 | 2015-08-25 | Eastman Chemical Company | Reactive distillation of a carboxylic acid and a glycol |
US9040748B2 (en) | 2012-06-08 | 2015-05-26 | Eastman Chemical Company | Hydrocarboxylation of aqueous formaldehyde using a dehydrating recycle stream to decrease water concentration |
GB201615762D0 (en) * | 2016-09-16 | 2016-11-02 | Johnson Matthey Davy Technologies Ltd | Process |
CN111635302B (zh) * | 2020-07-08 | 2021-06-15 | 江南大学 | 一种多柱连续色谱除盐以纯化羟基乙酸的方法 |
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 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3202705A (en) * | 1960-05-26 | 1965-08-24 | American Maize Prod Co | Process for producing color stable lactic acid |
-
1973
- 1973-02-15 US US332578A patent/US3859349A/en not_active Expired - Lifetime
-
1974
- 1974-01-29 BE BE140274A patent/BE810280A/xx unknown
- 1974-01-29 NL NL7401188A patent/NL7401188A/xx unknown
- 1974-02-13 GB GB657874A patent/GB1429591A/en not_active Expired
- 1974-02-14 FR FR7405000A patent/FR2217307B3/fr not_active Expired
- 1974-02-14 IT IT7448373A patent/IT1002937B/it active
- 1974-02-15 JP JP49017752A patent/JPS49124025A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
US3859349A (en) | 1975-01-07 |
JPS49124025A (it) | 1974-11-27 |
FR2217307A1 (it) | 1974-09-06 |
BE810280A (fr) | 1974-07-29 |
NL7401188A (it) | 1974-08-19 |
FR2217307B3 (it) | 1976-11-26 |
GB1429591A (en) | 1976-03-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
IT1002937B (it) | Purificazione di acido idrossiace tico | |
IT1018896B (it) | Procedimento di recupero di acido tereftalico mediante cristaliz zazione istantanea continua | |
AR203627A1 (es) | Sintesis de nuevos derivados del acido heterociclico-indol-3-ilacetico | |
IT1010403B (it) | Processo per la purificazione di gas | |
SE414304B (sv) | Estrar av cyklopropankarboxylsyraderivat for pesticidiskt bruk | |
IT1019121B (it) | Preparazione di anidridi di acido carbossilico | |
IT1025896B (it) | Procedimento migliorato per la fabbricazione di acido borico | |
IT957897B (it) | Procedimento per la depurazione di acido cloridrico gassoso | |
IT1041434B (it) | Procedimento per la produzione di acido tereftalico | |
IT942170B (it) | Procedimento per la purificazione di acido tereftalico | |
IT951042B (it) | Procedimento per la preparazione catalitica di acido iodidrico | |
IT1014415B (it) | Purificazione di anidride maleica grezza | |
IT1004281B (it) | Procedimento per la depurazione di acido fosforico umido | |
IT1005317B (it) | Standard di acido urico | |
IT1016606B (it) | Procedimento per la purificazione dell acido fosforico | |
IT1068731B (it) | Procedimento per la produzione di acido tereftalico | |
IT1035434B (it) | Procedimento per la depurazione di acido decandicarbossilicoi io | |
IT1026172B (it) | Procedimento per la produzione di acido p nitrobenzoico | |
IT953480B (it) | Purificazione di acido cianurico grezzo | |
IT1004878B (it) | Procedimento per la purificazione dell acido fosforico | |
IT1036884B (it) | Procedimento di purificazione di acido forforico | |
IT1009613B (it) | Processo di purificazione di aci do fosforico | |
IT1019661B (it) | Processo per la purificazione di acido sorbico | |
IT1006968B (it) | Processo per la purificazione di azopigmenti | |
IT1029410B (it) | Procedimento per la produzione di beta alcossi butirrati alchilici |