CN1136309A - 环酯的制备方法 - Google Patents

环酯的制备方法 Download PDF

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Publication number
CN1136309A
CN1136309A CN94194326A CN94194326A CN1136309A CN 1136309 A CN1136309 A CN 1136309A CN 94194326 A CN94194326 A CN 94194326A CN 94194326 A CN94194326 A CN 94194326A CN 1136309 A CN1136309 A CN 1136309A
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CN
China
Prior art keywords
solvent
cyclic ester
cyclic
water
acid
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Pending
Application number
CN94194326A
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English (en)
Chinese (zh)
Inventor
丹·W·弗瑟尔
蒂莫西·J·埃格曼
威廉·A·伊万科
凯文·H·希林
曼弗雷德·迈泽
安东尼·E·艾伦
梅尔维尔·E·D·希尔曼
乔治·E·克里明
爱德华·S·利平斯基
亚历克斯·陈
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Biopak Technology Ltd
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Biopak Technology Ltd
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Publication date
Application filed by Biopak Technology Ltd filed Critical Biopak Technology Ltd
Publication of CN1136309A publication Critical patent/CN1136309A/zh
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D319/00Heterocyclic compounds containing six-membered rings having two oxygen atoms as the only ring hetero atoms
    • C07D319/101,4-Dioxanes; Hydrogenated 1,4-dioxanes
    • C07D319/121,4-Dioxanes; Hydrogenated 1,4-dioxanes not condensed with other rings
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/42Separation; Purification; Stabilisation; Use of additives
    • C07C51/48Separation; Purification; Stabilisation; Use of additives by liquid-liquid treatment
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18Manufacture of films or sheets
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/04Polyesters derived from hydroxycarboxylic acids, e.g. lactones
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D167/00Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
    • C09D167/04Polyesters derived from hydroxycarboxylic acids, e.g. lactones
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/19Details relating to the geometry of the reactor
    • B01J2219/194Details relating to the geometry of the reactor round
    • B01J2219/1941Details relating to the geometry of the reactor round circular or disk-shaped
    • B01J2219/1942Details relating to the geometry of the reactor round circular or disk-shaped spherical
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2367/00Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/04Polyesters derived from hydroxy carboxylic acids, e.g. lactones
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/10Process efficiency

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Polymers & Plastics (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Heterocyclic Compounds That Contain Two Or More Ring Oxygen Atoms (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
CN94194326A 1993-09-29 1994-09-13 环酯的制备方法 Pending CN1136309A (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/128,797 1993-09-29
US08/128,797 US5420304A (en) 1992-03-19 1993-09-29 Method to produce cyclic esters

Publications (1)

Publication Number Publication Date
CN1136309A true CN1136309A (zh) 1996-11-20

Family

ID=22437018

Family Applications (1)

Application Number Title Priority Date Filing Date
CN94194326A Pending CN1136309A (zh) 1993-09-29 1994-09-13 环酯的制备方法

Country Status (15)

Country Link
US (2) US5420304A (https=)
EP (1) EP0722433B1 (https=)
JP (1) JPH09502997A (https=)
CN (1) CN1136309A (https=)
AT (1) ATE189204T1 (https=)
AU (1) AU7726794A (https=)
BR (1) BR9407655A (https=)
CA (1) CA2172798A1 (https=)
DE (1) DE69422819D1 (https=)
FI (1) FI961402A0 (https=)
MY (1) MY113939A (https=)
PH (1) PH30804A (https=)
TW (1) TW321646B (https=)
WO (1) WO1995009142A1 (https=)
ZA (2) ZA947211B (https=)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100545159C (zh) * 2005-12-19 2009-09-30 奇美实业股份有限公司 α-羟基有机酸环酯类化合物的制造方法
CN106554342A (zh) * 2016-10-26 2017-04-05 中国地质大学(武汉) 3,6‑二氯甲基乙交酯及其制备方法和用途
CN112574165A (zh) * 2020-12-30 2021-03-30 安徽丰原生物技术股份有限公司 一步转化生成丙交酯的方法
CN113387921A (zh) * 2021-06-18 2021-09-14 华东理工大学 一种合成乙交酯的方法
CN115028615A (zh) * 2022-07-27 2022-09-09 万华化学(四川)有限公司 一种l,l-丙交酯及其制备方法和应用

Families Citing this family (51)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69530020T2 (de) * 1994-02-24 2004-02-05 Matsushita Electric Industrial Co., Ltd., Kadoma Verfahren zur Extraktion organischer Substanz, in diesem Verfahren zu verwendendes Lösungsmittel und Verfahren zur Messung des Gehaltes an organischer Substanz
US5856567A (en) 1995-06-07 1999-01-05 Novus International, Inc. Continuous hydrolysis process for preparing 2-hydroxy-4-methylthiobutanioc acid or salts thereof
MX9709477A (es) 1995-06-07 1998-02-28 Novus Int Inc Proceso continuo de hidrolisis para preparar acido 2-hidroxi-4-metiltiobutanoico o sales del mismo.
US5830991A (en) * 1996-02-09 1998-11-03 Kureha Kagaku Kagyo Kk Preparation process and purification process of dimeric cyclic ester of hydroxycarboxylic acid
US6475759B1 (en) * 1997-10-14 2002-11-05 Cargill, Inc. Low PH lactic acid fermentation
US6229046B1 (en) * 1997-10-14 2001-05-08 Cargill, Incorported Lactic acid processing methods arrangements and products
US6313319B1 (en) 1998-09-25 2001-11-06 Shimadzu Corporation Method for purifying lactide and lactide for food additives
ATE405665T1 (de) * 1999-03-11 2008-09-15 Zeachem Inc Verfahren zur herstellung von äthanol
US7074603B2 (en) 1999-03-11 2006-07-11 Zeachem, Inc. Process for producing ethanol from corn dry milling
IL132289A (en) 1999-10-08 2003-12-10 Staley Mfg Co A E Process for conversion of an extracted carboxylic acid to a non-ionized product
NL1013682C2 (nl) * 1999-11-26 2001-05-30 Purac Biochem Bv Werkwijze en inrichting voor het zuiveren van een waterige oplossing van melkzuur.
FR2802923B1 (fr) * 1999-12-28 2002-03-08 Roquette Freres Procede de preparation d'une composition d'ester d'acide lactique et son utilisation en tant que solvant
US6509179B1 (en) 2000-10-12 2003-01-21 Barbara I. Veldhuis-Stribos Continuous process for preparing lactic acid
US6984293B2 (en) * 2001-03-15 2006-01-10 Tate & Lyle Ingredients Azeotropic distillation of cyclic esters of hydroxy organic acids
US6916959B2 (en) * 2001-05-11 2005-07-12 Nippon Shokubai Co., Ltd. Halogen-containing aromatic compound
EP1300387A1 (de) * 2001-10-05 2003-04-09 Haltermann GmbH Verfahren zum Herstellen von Estern einer Hydroxysäure
EP1513939B1 (en) 2002-05-30 2014-12-31 Cargill Inc. Fermentation process using specific oxygen uptake rates as a process control
JP4711955B2 (ja) 2003-05-02 2011-06-29 ネイチャーワークス・エル・エル・シー 遺伝子組換え酵母及び遺伝子組換え酵母を用いた発酵方法
CN1938257A (zh) * 2004-01-29 2007-03-28 齐凯姆公司 有机酸的回收
US7652167B2 (en) * 2004-07-19 2010-01-26 Board Of Trustees Of Michigan State University Process for production of organic acid esters
WO2006124899A2 (en) * 2005-05-13 2006-11-23 Cargill, Incorporated Production of derivatives of lactide, production of lactides, and use of lactide in foods and to produce polymers
BRPI0610951A2 (pt) 2005-06-02 2010-08-03 Cargill Inc levedura geneticamente modificada da espécie issatchenkia orientalis e espécies estreitamente relacionadas e processos de fermentação utilizando as mesmas
US8137953B2 (en) 2005-11-23 2012-03-20 Cargill Inc. Lactic acid-producing yeast cells having nonfunctional L- or D-lactate:ferricytochrome C oxidoreductase cells
BRPI0709607B1 (pt) 2006-03-13 2018-05-08 Cargill Inc cédulas de levedura tendo via rompida de diidroxi acetona fosfato para glicerol e processo de fermentação"
WO2007114017A1 (ja) 2006-03-29 2007-10-11 Bio-Energy Corporation 乳酸発酵液からの乳酸成分の分離方法および分離装置
DE102006055427A1 (de) * 2006-11-22 2008-05-29 Evonik Röhm Gmbh Verfahren zur Herstellung von Tetramethylglycolid
CN101646776A (zh) * 2007-02-09 2010-02-10 齐凯姆公司 制造产物的高能效方法
JP2008239601A (ja) * 2007-02-26 2008-10-09 Sumitomo Chemical Co Ltd ラクチド化合物の製造方法
EP2133346A1 (fr) * 2008-06-12 2009-12-16 Ktanton Ltd Procédé pour la fabrication d'un diester cyclique d'un acide alpha-hydroxylé
KR101154029B1 (ko) 2009-05-20 2012-06-07 한국화학연구원 젖산에스테르로부터 락타이드의 직접 전환용 촉매 및 이를 이용한 락타이드의 제조방법
EP2407463A1 (en) 2010-07-14 2012-01-18 Solvay SA Process for the manufacture of a cyclic diester of an apha-hydroxyacid
AR083613A1 (es) 2010-10-28 2013-03-06 Total Sa Proceso para la produccion de acido polilactico usando monascus
CN107828671B (zh) 2010-11-22 2022-03-08 卡吉尔公司 用于生产3-羟基丙酸的组合物和方法
EP2668281A4 (en) 2011-01-25 2015-08-26 Cargill Inc COMPOSITIONS AND METHODS OF SUCCINATE MANUFACTURE
EP2812313A4 (en) 2012-02-09 2015-09-30 Novus Int Inc FUNCTIONALIZED POLYMERIC COMPOSITIONS
MX2015000395A (es) 2012-07-12 2015-04-10 Novus Int Inc Composiciones de matriz y capa para proteccion de bioactivos.
WO2014018757A1 (en) 2012-07-25 2014-01-30 Cargill Incorporated Yeast cells having reductive tca pathway from pyruvate to succinate and overexpressing an exogenous nad(p)+ transhydrogenase enzyme
ES2536294T3 (es) * 2012-10-26 2015-05-22 Uhde Inventa-Fischer Gmbh Procedimiento para preparar diésteres cíclicos, especialmente dilactida
CN105209626B (zh) 2012-11-30 2019-09-03 诺维信股份有限公司 通过重组酵母生产3-羟基丙酸
CN105431520A (zh) 2013-07-31 2016-03-23 诺维信公司 利用表达昆虫天冬氨酸1-脱羧酶的重组酵母的3-羟基丙酸生产
WO2016100910A1 (en) 2014-12-19 2016-06-23 Novozymes A/S Recombinant host cells for the production of 3-hydroxypropionic acid
EP3056490A1 (en) * 2015-02-13 2016-08-17 PURAC Biochem BV Method for manufacturing lactide
WO2016138303A1 (en) 2015-02-27 2016-09-01 Novozymes A/S Mutant host cells for the production of 3-hydroxypropionic acid
US20180265902A1 (en) 2015-08-24 2018-09-20 Novozymes A/S Beta-Alanine Aminotransferases For The Production of 3-Hydroxypropionic Acid
KR102547252B1 (ko) * 2016-01-08 2023-06-23 에스케이이노베이션 주식회사 유기물질 기상탈수반응 원료의 제조방법
CN106397389B (zh) * 2016-09-07 2019-01-29 南京大学 一种合成乙交酯的工艺方法
WO2018207904A1 (ja) 2017-05-12 2018-11-15 中外製薬株式会社 環状有機化合物の製造方法
US10584306B2 (en) 2017-08-11 2020-03-10 Board Of Regents Of The University Of Oklahoma Surfactant microemulsions
EP4134365A1 (en) * 2021-08-12 2023-02-15 Sulzer Management AG A plant and an efficient process for producing lactide from lactic acid
CN115417851A (zh) * 2022-08-30 2022-12-02 中国科学院长春应用化学研究所 一种乳酸直接制备丙交酯的方法
EP4389740B1 (de) * 2022-12-21 2025-04-30 Röhm GmbH Polymerisierbares tetramethylglycolid

Family Cites Families (57)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE53074C (de) * Frau A. LA GUAYRA MAYO in Great Falls, Cty Cascade, und W. HUDNALL in Helena, Cty Lewisand Clark, V. St. A Verstellbare Säumvorrichtung für Nähmaschinen
CA863673A (en) * 1971-02-16 K. Schneider Allan Absorbable suture
DE221786C (https=) *
DE267826C (de) * 1912-12-28 1913-12-02 Chemische Werke Verfahren zur Darstellung von lactid
US1095205A (en) * 1913-05-15 1914-05-05 Chemische Werke Vorm Dr Heinrich Byk Manufacture of lactid.
US1594843A (en) * 1921-08-19 1926-08-03 Du Pont Purification of lactic acid
US1906068A (en) * 1931-03-02 1933-04-25 Grasselli Chemical Co Lactic acid
US1995970A (en) * 1931-04-04 1935-03-26 Du Pont Polymeric lactide resin
US2163268A (en) * 1933-12-12 1939-06-20 Du Pont Method for making cyclic esters
US2174491A (en) * 1938-06-28 1939-09-26 Paul D Watson Method of making lactic acid resinous products
US2189572A (en) * 1938-09-01 1940-02-06 Paul D Watson Process for fractionating resinous products
US2703316A (en) * 1951-06-05 1955-03-01 Du Pont Polymers of high melting lactide
US2668162A (en) * 1952-03-20 1954-02-02 Du Pont Preparation of high molecular weight polyhydroxyacetic ester
US2758987A (en) * 1952-06-05 1956-08-14 Du Pont Optically active homopolymers containing but one antipodal species of an alpha-monohydroxy monocarboxylic acid
US2768973A (en) * 1954-11-30 1956-10-30 Du Pont Preparation of glycolaldehyde by hydrolysis of 4-chloro-2-oxodioxolane
US3322791A (en) * 1963-09-26 1967-05-30 Ethicon Inc Preparation of optically active lactides
DE1194142B (de) * 1963-11-19 1965-06-03 Bayer Ag Verfahren zum UV-Stabilisieren von Polycarbonaten
US3371112A (en) * 1964-12-18 1968-02-27 Allied Chem Purification of crude malic acid liquors
BE674355A (https=) * 1964-12-28 1966-06-27
DD53074A1 (de) * 1965-12-18 1967-01-05 Verfahren zur Herstellung cyclischer Esteranhydride von alpha-Hydroxycarbonsäuren
US3457280A (en) * 1967-06-12 1969-07-22 American Cyanamid Co Alpha-glycolide and methods for the isolation thereof
US3435008A (en) * 1967-08-22 1969-03-25 American Cyanamid Co Method for preparation of isomerically pure beta-glycolide and polymerization method for glycolide compositions employing partial hydrolyzate of said beta-glycolide
US3597450A (en) * 1969-11-05 1971-08-03 American Cyanamid Co Preparation of glycolide polymerizable into polyglycolic acid of consistently high molecular weight
US3867190A (en) * 1971-10-18 1975-02-18 American Cyanamid Co Reducing capillarity of polyglycolic acid sutures
US3736646A (en) * 1971-10-18 1973-06-05 American Cyanamid Co Method of attaching surgical needles to multifilament polyglycolic acid absorbable sutures
US4033938A (en) * 1974-01-21 1977-07-05 American Cyanamid Company Polymers of unsymmetrically substituted 1,4-dioxane-2,5-diones
US3960152A (en) * 1974-01-21 1976-06-01 American Cyanamid Company Surgical sutures of unsymmetrically substituted 1,4-dioxane-2,5-diones
US4045418A (en) * 1975-01-28 1977-08-30 Gulf Oil Corporation Copolymers of D,L-lactide and epsilon caprolactone
US4070375A (en) * 1976-08-05 1978-01-24 Chevron Research Company Process for preparing 1,4-dioxan-2-ones
US4435595A (en) * 1982-04-26 1984-03-06 Eastman Kodak Company Reactive distillation process for the production of methyl acetate
FR2583413B1 (fr) * 1985-06-14 1987-11-20 Rhone Poulenc Spec Chim Procede de preparation de trifluoroacetate de methyle.
US4727163A (en) * 1985-07-11 1988-02-23 E. I. Du Pont De Nemours And Company Process for preparing highly pure cyclic esters
US4650851A (en) * 1986-03-19 1987-03-17 Pfizer Hospital Products Group, Inc. Purification of glycolide
US4771001A (en) * 1986-03-27 1988-09-13 Neurex Corp. Production of lactic acid by continuous fermentation using an inexpensive raw material and a simplified method of lactic acid purification
EP0261572A1 (de) * 1986-09-20 1988-03-30 Boehringer Ingelheim Kg Verfahren zur Herstellung von Lactid
DE3632103A1 (de) * 1986-09-20 1988-03-24 Boehringer Ingelheim Kg Verfahren zur herstellung von lactid
DE3708915C2 (de) * 1987-03-19 1996-04-04 Boehringer Ingelheim Kg Verfahren zur Herstellung von Lactid
ES2030409T3 (es) * 1986-10-24 1992-11-01 Boehringer Ingelheim Kg Procedimiento para preparar y purificar compuestos termolabiles .
EP0275581B1 (en) * 1986-12-19 1992-08-12 Akzo N.V. Preparation of polylactic acid and copolymers thereof
US4835293A (en) * 1987-02-24 1989-05-30 E. I. Du Pont De Nemours And Company Atmospheric pressure process for preparing pure cyclic esters
NL8702563A (nl) * 1987-10-28 1989-05-16 Cca Biochem B V Polymeer lactide, werkwijze voor het bereiden van een dergelijk polymeer lactide, alsmede een samenstelling, die een dergelijk polymeer lactide bevat.
EP0339882A1 (en) * 1988-04-27 1989-11-02 MITSUI TOATSU CHEMICALS, Inc. Process for the production of lactide
US5319107A (en) * 1990-09-18 1994-06-07 Biopak Technology, Ltd. Method to produce cyclic esters
US5274127A (en) * 1990-09-18 1993-12-28 Biopak Technology, Ltd. Lactide production from dehydration of aqueous lactic acid feed
US5068418A (en) * 1989-05-08 1991-11-26 Uop Separation of lactic acid from fermentation broth with an anionic polymeric absorbent
US4939294A (en) * 1989-05-22 1990-07-03 Eastman Kodak Company Preparation of ultra high purity methyl acetate
US5075115A (en) * 1990-04-02 1991-12-24 Fmc Corporation Process for polymerizing poly(lactic acid)
US5023349A (en) * 1990-05-08 1991-06-11 E. I. Du Pont De Nemours And Company Continuous process for rapid conversion of oligomers to cyclic esters
US5043458A (en) * 1990-05-03 1991-08-27 E. I. Du Pont De Nemours And Company One-step continuous process for preparing cyclic esters
AU7762291A (en) * 1990-05-03 1991-11-27 E.I. Du Pont De Nemours And Company Improved process for the rapid production of cyclic esters
US5091544A (en) * 1990-05-08 1992-02-25 E. I. Du Pont De Nemours And Company Process for rapid conversion of oligomers to cyclic esters
US5023350A (en) * 1990-05-24 1991-06-11 E. I. Du Pont De Nemours And Company Process for the purification of cyclic esters
US5138074A (en) * 1990-06-28 1992-08-11 E. I. Du Pont De Nemours And Company Continuous catalyzed vapor phase dimeric cyclic ester process
US5089632A (en) * 1991-01-30 1992-02-18 E. I. Du Pont De Nemours And Company Process for preparing cyclic esters using a fluorocarbon
US5236560A (en) * 1992-03-13 1993-08-17 E. I. Du Pont De Nemours And Company Solventless dimeric cyclic ester distillation process
US5264592A (en) * 1992-09-08 1993-11-23 Camelot Technologies Inc. Lactide melt recrystallization
US5310599A (en) * 1993-05-06 1994-05-10 E. I. Du Pont De Nemours And Company Method for making polymers of alpha-hydroxy acids

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100545159C (zh) * 2005-12-19 2009-09-30 奇美实业股份有限公司 α-羟基有机酸环酯类化合物的制造方法
CN106554342A (zh) * 2016-10-26 2017-04-05 中国地质大学(武汉) 3,6‑二氯甲基乙交酯及其制备方法和用途
CN112574165A (zh) * 2020-12-30 2021-03-30 安徽丰原生物技术股份有限公司 一步转化生成丙交酯的方法
CN112574165B (zh) * 2020-12-30 2022-01-07 安徽丰原生物技术股份有限公司 一步转化生成丙交酯的方法
CN113387921A (zh) * 2021-06-18 2021-09-14 华东理工大学 一种合成乙交酯的方法
CN115028615A (zh) * 2022-07-27 2022-09-09 万华化学(四川)有限公司 一种l,l-丙交酯及其制备方法和应用
CN115028615B (zh) * 2022-07-27 2024-01-09 万华化学(四川)有限公司 一种l,l-丙交酯及其制备方法和应用

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Publication number Publication date
FI961402A7 (fi) 1996-03-27
PH30804A (en) 1997-10-17
ZA947211B (en) 1996-06-18
EP0722433B1 (en) 2000-01-26
TW321646B (https=) 1997-12-01
FI961402L (fi) 1996-03-27
WO1995009142A1 (en) 1995-04-06
AU7726794A (en) 1995-04-18
MY113939A (en) 2002-06-29
EP0722433A1 (en) 1996-07-24
ATE189204T1 (de) 2000-02-15
ZA961426B (en) 1996-06-18
EP0722433A4 (https=) 1996-07-31
CA2172798A1 (en) 1995-04-06
US5750732A (en) 1998-05-12
BR9407655A (pt) 1997-01-28
FI961402A0 (fi) 1996-03-27
US5420304A (en) 1995-05-30
JPH09502997A (ja) 1997-03-25
DE69422819D1 (de) 2000-03-02

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