BR0208252A - Processo de destilação azeotrópica de ésteres cìclicos de ácidos hidróxi-orgânicos - Google Patents

Processo de destilação azeotrópica de ésteres cìclicos de ácidos hidróxi-orgânicos

Info

Publication number
BR0208252A
BR0208252A BR0208252-7A BR0208252A BR0208252A BR 0208252 A BR0208252 A BR 0208252A BR 0208252 A BR0208252 A BR 0208252A BR 0208252 A BR0208252 A BR 0208252A
Authority
BR
Brazil
Prior art keywords
azeotropic distillation
organic
cyclic
hydroxy acid
ester
Prior art date
Application number
BR0208252-7A
Other languages
English (en)
Inventor
Michael Charles Milner Cockrem
Istvan Kovacs
Original Assignee
Staley Mfg Co A E
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 Staley Mfg Co A E filed Critical Staley Mfg Co A E
Publication of BR0208252A publication Critical patent/BR0208252A/pt

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
    • C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
    • C07C51/44—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation
    • C07C51/46—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation by azeotropic distillation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/34—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping with one or more auxiliary substances
    • B01D3/36—Azeotropic distillation
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heterocyclic Compounds That Contain Two Or More Ring Oxygen Atoms (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Polyesters Or Polycarbonates (AREA)

Abstract

"PROCESSO DE DESTILAçãO AZEOTRóPICA DE éSTERES CìCLICOS DE áCIDOS HIDRóXI-ORGâNICOS". ésteres cíclicos de ácidos hidróxi-orgânicos podem ser produzidos e recuperados via destilação azeotrópica. Em certas configurações ésteres cíclicos, tais como glicolídeo e lactídeo, podem ser produzidos a partir de um caldo de fermentação ou outra corrente de alimentação que compreenda um ácido hidróxi orgânico, um sal de amónia de um ácido hidróxi orgânico, uma amida de um ácido hidróxi orgânico, ou um éster de um ácido hidróxi orgânico usando destilação azeotrópica. O agente azeotropante da corrente de alimentação ou o ácido hidróxi orgânico derivado da corrente de alimentação por decomposição é reagido para produzir o éster cíclico. Em outras configurações uma composição bruta de um éster cíclico de um éster orgânico pode ser purificada usando destilação azeotrópica.
BR0208252-7A 2001-03-15 2002-03-06 Processo de destilação azeotrópica de ésteres cìclicos de ácidos hidróxi-orgânicos BR0208252A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/809,534 US6984293B2 (en) 2001-03-15 2001-03-15 Azeotropic distillation of cyclic esters of hydroxy organic acids
PCT/US2002/006923 WO2003004126A2 (en) 2001-03-15 2002-03-06 Azeotropic distillation of cyclic esters of hydroxy organic acids

Publications (1)

Publication Number Publication Date
BR0208252A true BR0208252A (pt) 2004-08-17

Family

ID=25201550

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0208252-7A BR0208252A (pt) 2001-03-15 2002-03-06 Processo de destilação azeotrópica de ésteres cìclicos de ácidos hidróxi-orgânicos

Country Status (9)

Country Link
US (1) US6984293B2 (pt)
EP (1) EP1412043B1 (pt)
CN (1) CN1253230C (pt)
AT (1) ATE421899T1 (pt)
AU (1) AU2002339838A1 (pt)
BR (1) BR0208252A (pt)
CA (1) CA2440918A1 (pt)
DE (1) DE60231045D1 (pt)
WO (1) WO2003004126A2 (pt)

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US8436156B2 (en) * 2008-01-04 2013-05-07 Tate & Lyle Technology Limited Method for the production of sucralose
JP2011517445A (ja) * 2008-03-20 2011-06-09 テート アンド ライル テクノロジー リミテッド 第三級アミド溶媒からの酸の除去
US8436157B2 (en) * 2008-03-26 2013-05-07 Tate & Lyle Technology Limited Method for the production of sucralose
US8212022B2 (en) * 2008-04-03 2012-07-03 Tate & Lyle Technology Limited Effect of carbohydrate concentration on sucralose extraction efficiency
US8497367B2 (en) * 2008-04-03 2013-07-30 Tate & Lyle Technology Limited Sucralose purification process
WO2011044243A1 (en) * 2009-10-06 2011-04-14 Gevo, Inc. Integrated process to selectively convert renewable isobutanol to p-xylene
FR2974802B1 (fr) 2011-05-06 2013-09-13 Roquette Freres Procede de purification de l'acide glycolique par distillation
FR2974804B1 (fr) 2011-05-06 2013-05-03 Roquette Freres Procede de preparation d'un acide glycolique de haute purete
WO2014080876A1 (ja) * 2012-11-22 2014-05-30 株式会社クレハ 気液の向流接触による精留工程を備えるグリコリドの製造方法、及び、粗グリコリドの精製方法
WO2016194003A2 (en) * 2015-05-29 2016-12-08 Arvind Mallinath Lali Separation of organic acids from mixtures containing ammonium salts of organic acids
US10399004B2 (en) * 2016-09-08 2019-09-03 Eastman Chemical Company Thermally integrated distillation systems and processes using the same
US10266512B2 (en) 2017-08-10 2019-04-23 Novus International, Inc. Processes for preparing heteroatom containing cyclic dimers
JP7293384B2 (ja) * 2019-03-08 2023-06-19 アール・エイ・アイ・ストラテジック・ホールディングス・インコーポレイテッド エアロゾル供給装置用乳酸の加水分解方法
CN112843762B (zh) * 2019-11-26 2024-05-24 南京华基塔业有限公司 一种由寡聚物制备丙交酯的反应系统及方法
CN111269541B (zh) * 2020-03-27 2022-02-15 桂林电器科学研究院有限公司 一种抗静电双向拉伸聚乳酸薄膜及其制备方法
CN111499843A (zh) * 2020-04-29 2020-08-07 吉林中粮生化有限公司 基于丙交酯生产聚乳酸的方法、dcs系统及存储介质
CN113842657B (zh) * 2021-10-28 2023-10-03 北京工商大学 一种循环制备丙交酯的设备
WO2023212652A1 (en) * 2022-04-27 2023-11-02 Impact Nano Llc High purity ligand-al-hydride compositions
CN114805285A (zh) * 2022-06-07 2022-07-29 南昌大学 一种从l-乳酸制备丙交酯的方法

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FR1359885A (fr) * 1963-03-21 1964-04-30 Electrochimie Soc Procédé de fabrication d'acide acrylique glacial
US3419478A (en) * 1966-12-13 1968-12-31 Du Pont Azeotropic distillation of a n,n-dimethylacetamide-acetic acid mixture using a saturated aliphatic hydrocarbon
US3718545A (en) * 1971-04-26 1973-02-27 Celanese Corp Distillation process for recovering substantially anhydrous formic acid from aqueous solutions
IL39710A (en) 1972-06-19 1975-04-25 Imi Inst For Res & Dev Recovery of acids from aqueous solutions by solvent extraction
FR2308611A1 (fr) 1975-04-24 1976-11-19 Rhone Poulenc Ind Procede de recuperation de l'acide acetique a partir de ses solutions aqueuses de faible concentration
DE2714564C2 (de) * 1977-04-01 1986-01-02 Chemische Werke Hüls AG, 4370 Marl Verfahren zur Herstellung von cyclischen Diestern der Undecandisäure
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Also Published As

Publication number Publication date
US20020157937A1 (en) 2002-10-31
US6984293B2 (en) 2006-01-10
EP1412043A4 (en) 2004-09-29
EP1412043B1 (en) 2009-01-28
ATE421899T1 (de) 2009-02-15
DE60231045D1 (de) 2009-03-19
WO2003004126A2 (en) 2003-01-16
CA2440918A1 (en) 2003-01-16
AU2002339838A1 (en) 2003-01-21
CN1253230C (zh) 2006-04-26
EP1412043A2 (en) 2004-04-28
WO2003004126A3 (en) 2004-02-19
CN1516611A (zh) 2004-07-28

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Legal Events

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B25D Requested change of name of applicant approved

Owner name: TATE AND LYLE INGREDIENTS AMERICAS, INC. (US)

Free format text: ALTERADO DE: A.E. STALEY MANUFACTURING CO.

B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B09B Patent application refused [chapter 9.2 patent gazette]

Free format text: INDEFIRO O PEDIDO DE ACORDO COM O ART. 8O COMBINADO COM ART. 13 DA LPI.

B09B Patent application refused [chapter 9.2 patent gazette]

Free format text: MANTIDO O INDEFERIMENTO UMA VEZ QUE NAO FOI APRESENTADO RECURSO DENTRO DO PRAZO LEGAL.