HK180496A - Manufacture of high-purity hydroxyacetic acid - Google Patents

Manufacture of high-purity hydroxyacetic acid

Info

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
Application number
HK180496A
Other languages
English (en)
Inventor
Robert Dicosimo
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
Publication of HK180496A publication Critical patent/HK180496A/xx

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)
HK180496A 1990-09-20 1996-09-26 Manufacture of high-purity hydroxyacetic acid HK180496A (en)

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 (de)
JP (1) JPH06501268A (de)
AT (1) ATE137488T1 (de)
CA (1) CA2091906A1 (de)
DE (1) DE69119234T2 (de)
HK (1) HK180496A (de)
WO (1) WO1992005138A1 (de)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
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 (de) * 2003-09-30 2014-10-22 Ajinomoto Co., Inc. Verfahren zur aufreinigung von bernsteinsäure aus fermentationsflüssigkeit
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 (de) 2005-05-27 2015-04-08 Asahi Kasei Chemicals Corporation Verfahren zur Herstellung von Glykolsäure
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)

* Cited by examiner, † Cited by third party
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

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 (de) 1996-05-01
WO1992005138A1 (en) 1992-04-02
EP0552255A1 (de) 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