IT1002937B - Purificazione di acido idrossiace tico - Google Patents

Purificazione di acido idrossiace tico

Info

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
Application number
IT7448373A
Other languages
English (en)
Original Assignee
Du Pont
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Du Pont filed Critical Du Pont
Application granted granted Critical
Publication of IT1002937B publication Critical patent/IT1002937B/it

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)
IT7448373A 1973-02-15 1974-02-14 Purificazione di acido idrossiace tico IT1002937B (it)

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 (25)

* Cited by examiner, † Cited by third party
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
ATE137488T1 (de) * 1990-09-20 1996-05-15 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
US7005536B2 (en) * 2002-07-12 2006-02-28 Nippon Shokubai Co., Ltd. Method for producing diol derivatives
US20050209328A1 (en) * 2004-03-19 2005-09-22 Allgood Charles C Alphahydroxyacids with ultra-low metal concentration
US8519185B2 (en) * 2005-10-26 2013-08-27 Mitsui Chemicals, Inc. Process for producing glycolic acid
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
US8829248B2 (en) 2010-08-18 2014-09-09 Eastman Chemical Company Method for recovery and recycle of ruthenium homogeneous catalysts
US9227896B2 (en) 2010-08-18 2016-01-05 Eastman Chemical Company Process for the separation and purification of a mixed diol stream
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
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
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
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
CN104428284A (zh) * 2012-03-27 2015-03-18 伊士曼化工公司 用于回收和再循环酸催化剂的方法
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
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
CN115677475A (zh) * 2022-11-03 2023-02-03 江西天宇化工有限公司 一种以2,4-d废水为原料制备羟基乙酸的方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
FR2217307B3 (it) 1976-11-26
GB1429591A (en) 1976-03-24
NL7401188A (it) 1974-08-19
JPS49124025A (it) 1974-11-27
FR2217307A1 (it) 1974-09-06
BE810280A (fr) 1974-07-29
US3859349A (en) 1975-01-07

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