FR1409098A - Préparation de lactides optiquement actifs - Google Patents

Préparation de lactides optiquement actifs

Info

Publication number
FR1409098A
FR1409098A FR989379A FR989379A FR1409098A FR 1409098 A FR1409098 A FR 1409098A FR 989379 A FR989379 A FR 989379A FR 989379 A FR989379 A FR 989379A FR 1409098 A FR1409098 A FR 1409098A
Authority
FR
France
Prior art keywords
lactides
preparation
optically active
optically
active
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
FR989379A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Application granted granted Critical
Publication of FR1409098A publication Critical patent/FR1409098A/fr
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D319/00—Heterocyclic compounds containing six-membered rings having two oxygen atoms as the only ring hetero atoms
    • C07D319/10—1,4-Dioxanes; Hydrogenated 1,4-dioxanes
    • C07D319/12—1,4-Dioxanes; Hydrogenated 1,4-dioxanes not condensed with other rings

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
FR989379A 1963-09-26 1964-09-25 Préparation de lactides optiquement actifs Expired FR1409098A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US311668A US3322791A (en) 1963-09-26 1963-09-26 Preparation of optically active lactides

Publications (1)

Publication Number Publication Date
FR1409098A true FR1409098A (fr) 1965-08-20

Family

ID=23207930

Family Applications (1)

Application Number Title Priority Date Filing Date
FR989379A Expired FR1409098A (fr) 1963-09-26 1964-09-25 Préparation de lactides optiquement actifs

Country Status (4)

Country Link
US (1) US3322791A (fr)
DE (1) DE1234703B (fr)
FR (1) FR1409098A (fr)
GB (1) GB1007347A (fr)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US5332839A (en) * 1990-09-18 1994-07-26 Biopak Technology, Ltd. Catalytic production of lactide directly from lactic acid
US6005067A (en) 1992-01-24 1999-12-21 Cargill Incorporated Continuous process for manufacture of lactide polymers with controlled optical purity
US6326458B1 (en) 1992-01-24 2001-12-04 Cargill, Inc. Continuous process for the manufacture of lactide and lactide polymers
US5247059A (en) * 1992-01-24 1993-09-21 Cargill, Incorporated Continuous process for the manufacture of a purified lactide from esters of lactic acid
US5258488A (en) * 1992-01-24 1993-11-02 Cargill, Incorporated Continuous process for manufacture of lactide polymers with controlled optical purity
US5142023A (en) * 1992-01-24 1992-08-25 Cargill, Incorporated Continuous process for manufacture of lactide polymers with controlled optical purity
US5247058A (en) * 1992-01-24 1993-09-21 Cargill, Incorporated Continuous process for manufacture of lactide polymers with controlled optical purity
US5686630A (en) * 1993-09-29 1997-11-11 Chronopol, Inc. Purifying cyclic esters by aqueous solvent extraction
US5675021A (en) * 1992-03-19 1997-10-07 Chronopol, Inc. Method to produce and purify cyclic esters
US5420304A (en) * 1992-03-19 1995-05-30 Biopak Technology, Ltd. Method to produce cyclic esters
IT1256918B (it) * 1992-08-04 1995-12-27 Mini Ricerca Scient Tecnolog Procedimento per la produzione di poli acido lattico.
DE59305524D1 (de) * 1992-09-16 1997-04-03 Basf Ag Verfahren zur Herstellung von Glykolid und Lactid
US6005068A (en) 1992-10-02 1999-12-21 Cargill Incorporated Melt-stable amorphous lactide polymer film and process for manufacture thereof
DK0615555T3 (da) * 1992-10-02 2001-07-09 Cargill Inc Tekstilmateriale af smeltestabil lactidpolymer og fremgangsmåde til fremstilling deraf
US5338822A (en) * 1992-10-02 1994-08-16 Cargill, Incorporated Melt-stable lactide polymer composition and process for manufacture thereof
US5342969A (en) * 1993-03-03 1994-08-30 E. I. Du Pont De Nemours And Company Recovery of hydroxycarboxylic acid values from poly(hydroxycarboxylic acids)
EP0789080B1 (fr) 1996-02-08 2002-01-16 Gesellschaft für ökologische Technologie und Systemanalyse e.V. Procédé de préparation de lactates d'aminium organiques et leur utilisation pour le préparation de dilactide
KR101154029B1 (ko) * 2009-05-20 2012-06-07 한국화학연구원 젖산에스테르로부터 락타이드의 직접 전환용 촉매 및 이를 이용한 락타이드의 제조방법
ES2524988T3 (es) 2010-02-26 2014-12-16 Council Of Scientific & Industrial Research Procedimiento mejorado para la preparación de L-lactida de rendimiento químico y pureza óptica altos
WO2012000921A1 (fr) 2010-06-29 2012-01-05 Solvay Sa Procédé de fabrication de lactide
EP2407463A1 (fr) 2010-07-14 2012-01-18 Solvay SA Procédé de fabrication d'un diester cyclique d'un alpha-hydroxyacide
EP2806038B1 (fr) 2010-10-28 2018-07-25 Total Research & Technology Feluy Utilisation de Monascus pour la production d'acide organique
US20120245321A1 (en) 2011-03-25 2012-09-27 Hyundai Motor Company Manufacturing lactide from lactic acid
US20120245322A1 (en) 2011-03-25 2012-09-27 Hyundai Motor Company Manufacturing lactide from lactic acid
KR101326521B1 (ko) 2011-05-26 2013-11-07 현대자동차주식회사 유산으로부터 락타이드의 제조 방법
WO2013160485A1 (fr) * 2012-04-28 2013-10-31 Uhde Inventa-Fischer Gmbh Procédé de préparation continue de lactide directement à partir d'acide lactique concentré
EP4134365A1 (fr) * 2021-08-12 2023-02-15 Sulzer Management AG Installation et procédé efficace de production de lactide à partir d'acide lactique

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1083275B (de) * 1959-07-02 1960-06-15 Dynamit Nobel Ag Verfahren zur Herstellung von Lactid

Also Published As

Publication number Publication date
DE1234703B (de) 1967-02-23
US3322791A (en) 1967-05-30
GB1007347A (en) 1965-10-13

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