IL84303A - Preparation of highly pure cyclic esters - Google Patents

Preparation of highly pure cyclic esters

Info

Publication number
IL84303A
IL84303A IL84303A IL8430387A IL84303A IL 84303 A IL84303 A IL 84303A IL 84303 A IL84303 A IL 84303A IL 8430387 A IL8430387 A IL 8430387A IL 84303 A IL84303 A IL 84303A
Authority
IL
Israel
Prior art keywords
preparation
highly pure
cyclic esters
pure cyclic
esters
Prior art date
Application number
IL84303A
Other languages
English (en)
Other versions
IL84303A0 (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
Publication of IL84303A0 publication Critical patent/IL84303A0/xx
Publication of IL84303A publication Critical patent/IL84303A/xx

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D309/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings
    • C07D309/02—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having no double bonds between ring members or between ring members and non-ring members
    • C07D309/08—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having no double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D309/10—Oxygen atoms
    • C07D309/12—Oxygen atoms only hydrogen atoms and one oxygen atom directly attached to ring carbon atoms, e.g. tetrahydropyranyl ethers
    • 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)
  • Polyesters Or Polycarbonates (AREA)
  • Heterocyclic Compounds That Contain Two Or More Ring Oxygen Atoms (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Polyethers (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Medicinal Preparation (AREA)
  • Materials For Medical Uses (AREA)
IL84303A 1986-10-29 1987-10-28 Preparation of highly pure cyclic esters IL84303A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/925,484 US4727163A (en) 1985-07-11 1986-10-29 Process for preparing highly pure cyclic esters

Publications (2)

Publication Number Publication Date
IL84303A0 IL84303A0 (en) 1988-03-31
IL84303A true IL84303A (en) 1993-01-14

Family

ID=25451798

Family Applications (1)

Application Number Title Priority Date Filing Date
IL84303A IL84303A (en) 1986-10-29 1987-10-28 Preparation of highly pure cyclic esters

Country Status (17)

Country Link
US (1) US4727163A (fr)
EP (1) EP0266143B1 (fr)
JP (1) JPS63152375A (fr)
KR (1) KR880005116A (fr)
CN (1) CN1015986B (fr)
AR (1) AR243879A1 (fr)
AT (1) ATE102617T1 (fr)
AU (1) AU591432B2 (fr)
BR (1) BR8705758A (fr)
CA (1) CA1277672C (fr)
DD (1) DD264695A1 (fr)
DE (1) DE3789274D1 (fr)
IE (1) IE872885L (fr)
IL (1) IL84303A (fr)
MX (1) MX165197B (fr)
PT (1) PT86017B (fr)
ZA (1) ZA878121B (fr)

Families Citing this family (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0264926B1 (fr) * 1986-10-24 1992-04-08 Boehringer Ingelheim Kg Procédé de préparation et de purification de composés thermolabiles
DE3781133T2 (de) * 1986-12-19 1993-06-24 Akzo Nv Herstellung von polymilchsaeure und copolymeren daraus.
US4835293A (en) * 1987-02-24 1989-05-30 E. I. Du Pont De Nemours And Company Atmospheric pressure process for preparing pure cyclic esters
US5214159A (en) * 1987-06-16 1993-05-25 Boehringer Ingelheim Gmbh Meso-lactide
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
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
DE69127284D1 (de) * 1990-05-03 1997-09-18 Du Pont Verfahren zur schnellen herstellung cyclischer ester
US5138074A (en) * 1990-06-28 1992-08-11 E. I. Du Pont De Nemours And Company Continuous catalyzed vapor phase dimeric cyclic ester process
WO1992000974A1 (fr) * 1990-07-13 1992-01-23 E.I. Du Pont De Nemours And Company Procede de recyclage a haut rendement d'un lactide
US5076983A (en) * 1990-07-16 1991-12-31 E. I. Du Pont De Nemours And Company Polyhydroxy acid films
US5332839A (en) * 1990-09-18 1994-07-26 Biopak Technology, Ltd. Catalytic production of lactide directly from lactic acid
US5117008A (en) * 1990-10-23 1992-05-26 E. I. Du Pont De Nemours And Company Solvent scrubbing recovery of lactide and other dimeric cyclic esters
US5266706A (en) * 1990-10-23 1993-11-30 E. I. Du Pont De Nemours & Company Solvent scrubbing recovery of lactide and other dimeric cyclic esters
US5089632A (en) * 1991-01-30 1992-02-18 E. I. Du Pont De Nemours And Company Process for preparing cyclic esters using a fluorocarbon
US5326887A (en) * 1991-02-27 1994-07-05 E. I. Du Pont De Nemours And Company Process for the preparation of 1,4-dioxane-2,5-diones
US5196551A (en) * 1991-06-24 1993-03-23 E. I. Du Pont De Nemours And Company Co-vaporization process for preparing lactide
US5264617A (en) * 1991-11-22 1993-11-23 E. I. Du Pont De Nemours And Company Preparation of alkyl esters by depolymerization
US5229528A (en) * 1991-11-22 1993-07-20 E. I. Du Pont De Nemours And Company Rapid depolymerization of polyhydroxy acids
US5268507A (en) * 1991-11-22 1993-12-07 E. I. Du Pont De Nemours And Company Preparation of amide derivatives of hydroxy acids
US5264626A (en) * 1991-11-22 1993-11-23 E. I. Du Pont De Nemours And Company Rapid depolymerization of polyhydroxy acids
US5264614A (en) * 1991-11-22 1993-11-23 E. I. Du Pont De Nemours And Company Recovery of polyhydroxy acids
US5142023A (en) * 1992-01-24 1992-08-25 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
US6005067A (en) 1992-01-24 1999-12-21 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
US5258488A (en) * 1992-01-24 1993-11-02 Cargill, Incorporated Continuous process for manufacture of lactide polymers with controlled optical purity
US5420304A (en) * 1992-03-19 1995-05-30 Biopak Technology, Ltd. Method to produce cyclic esters
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
US5278256A (en) * 1992-09-16 1994-01-11 E. I. Du Pont De Nemours And Company Rapidly degradable poly (hydroxyacid) compositions
BR9305661A (pt) * 1992-10-02 1996-11-26 Cargill Inc Pano de polímero de lactideo estável em fusao e processo para a sua fabricaçao
US5338822A (en) * 1992-10-02 1994-08-16 Cargill, Incorporated Melt-stable lactide polymer composition and process for manufacture thereof
US6005068A (en) * 1992-10-02 1999-12-21 Cargill Incorporated Melt-stable amorphous lactide polymer film and process for manufacture thereof
WO1994008090A1 (fr) * 1992-10-02 1994-04-14 Cargill, Incorporated Papier pourvu d'un couchage en polymere de lactide stable a la fusion et procede de fabrication
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)
ATE212062T1 (de) 1996-02-08 2002-02-15 Oekologische Technologie Und S Verfahren zur herstellung von organischen aminiumlactaten und deren verwendung zur herstellung von dilactid
US5830991A (en) * 1996-02-09 1998-11-03 Kureha Kagaku Kagyo Kk Preparation process and purification process of dimeric cyclic ester of hydroxycarboxylic acid
JP4565208B2 (ja) 2000-03-31 2010-10-20 株式会社クレハ グリコリドの精製方法
KR100818950B1 (ko) * 2000-08-11 2008-04-04 가부시끼가이샤 구레하 환상 에스테르의 제조방법 및 정제방법
US6891048B2 (en) * 2001-03-06 2005-05-10 Kureha Kagaku Kogyo Kk Glycolide production process, and glycolic acid composition
DE60201342T2 (de) * 2001-04-12 2005-11-17 Kureha Chemical Industry Co., Ltd. Glycolide Erzeugungsverfahren und Glycolsäureoligomer für glycolide Erzeugung
WO2006129736A1 (fr) * 2005-06-01 2006-12-07 Mitsui Chemicals, Inc. Procédé pour produire un ester cyclique
CA2784995C (fr) * 2009-12-21 2018-07-03 Evonik Degussa Corporation Procede de preparation d'esters cycliques comprenant des groupes fonctionnels insatures et polyesters prepares a partir de ceux-ci
US20120245322A1 (en) 2011-03-25 2012-09-27 Hyundai Motor Company Manufacturing lactide from lactic acid
US20120245321A1 (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
PL2812372T3 (pl) 2012-02-09 2018-12-31 Novus International Inc. Cykliczne dimery zawierające heteroatom
CA2878617A1 (fr) 2012-07-12 2014-01-16 Houston Stephen Smith Compositions de matrice et de couche pour la protection de composes bioactifs
WO2014080876A1 (fr) 2012-11-22 2014-05-30 株式会社クレハ Procédé de production de glycolide, doté d'une étape de rectification au moyen d'un contact gaz-liquide à contre-courant et procédé de purification de glycolide brut
US10584306B2 (en) 2017-08-11 2020-03-10 Board Of Regents Of The University Of Oklahoma Surfactant microemulsions
RU2660652C1 (ru) * 2017-12-29 2018-07-09 Федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский Томский государственный университет" (ТГУ, НИ ТГУ) Способ получения гликолида из модифицированных олигомеров гликолевой кислоты
CN109970702B (zh) * 2019-03-28 2020-06-26 杭州华惟生物医药有限公司 一种高纯度医用乙交酯的工业化生产方法
CN117903105A (zh) 2022-10-12 2024-04-19 中国石油化工股份有限公司 一种乙交酯的提纯方法、乙交酯及应用

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2163268A (en) * 1933-12-12 1939-06-20 Du Pont Method for making cyclic esters
US2163109A (en) * 1936-04-03 1939-06-20 Du Pont Chemical process and products therefrom
US2668162A (en) * 1952-03-20 1954-02-02 Du Pont Preparation of high molecular weight polyhydroxyacetic ester
FR1485302A (fr) * 1966-07-01 1967-06-16 Wolfen Filmfab Veb Procédé pour l'obtention d'esters-anhydrides cycliques d'acides alpha-hydroxy-carboxyliques
US3442871A (en) * 1966-05-04 1969-05-06 American Cyanamid Co Process for polymerizing a glycolide
GB1108720A (en) * 1966-10-10 1968-04-03 Wolfen Filmfab Veb Process for the manufacture of cyclic ester anhydrides of ª‡-hydroxy-carboxylic acids
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
US3597350A (en) * 1968-11-12 1971-08-03 Pharmacia Fine Chemicals Ab Gel filtration process
US3763190A (en) * 1972-04-19 1973-10-02 Stanford Research Inst Preparation of pure glycolide

Also Published As

Publication number Publication date
AU591432B2 (en) 1989-11-30
AU8041787A (en) 1988-05-05
ZA878121B (en) 1989-07-26
US4727163A (en) 1988-02-23
EP0266143B1 (fr) 1994-03-09
MX165197B (es) 1992-10-30
EP0266143A3 (en) 1990-03-07
AR243879A1 (es) 1993-09-30
EP0266143A2 (fr) 1988-05-04
CA1277672C (fr) 1990-12-11
DD264695A1 (de) 1989-02-08
BR8705758A (pt) 1988-05-31
PT86017B (pt) 1990-07-31
KR880005116A (ko) 1988-06-28
ATE102617T1 (de) 1994-03-15
DE3789274D1 (de) 1994-04-14
PT86017A (en) 1987-11-01
CN87107549A (zh) 1988-05-11
JPS63152375A (ja) 1988-06-24
IE872885L (en) 1988-04-29
IL84303A0 (en) 1988-03-31
CN1015986B (zh) 1992-03-25

Similar Documents

Publication Publication Date Title
IL84303A0 (en) Preparation of highly pure cyclic esters
GB8609034D0 (en) Preparation of polyesters
EP0369249A3 (en) Process for the preparation of cyclic carbonates
GB8705608D0 (en) Preparation of tablets
IL92545A0 (en) Preparation of 2-chloropyridine-3-carboxylic acid esters
IL83663A0 (en) Preparation of 3-pyrrolidinols
AU7594787A (en) Preparation of IgE- binding factors
GB8717640D0 (en) Preparation of esters
GB8725334D0 (en) Preparation of benzothiazole-2-sulphenamides
GB8700775D0 (en) Preparation of alkyl esters
EP0295361A3 (en) Preparation of pseudoionones
GB8712909D0 (en) Preparation of esters
GB2198728B (en) Preparation of trifluoromethylbenzonitrile from trifluoromethylbenzaldehyde
IL82218A (en) Preparation of 1-aryl-5-amino-pyrazoles
GB2193206B (en) Preparation of taurine-containing peptides
GB2205313B (en) Preparation of trifluoromethyltoluene from halomethylbenzotrifluoride
IL85656A0 (en) Preparation of phenylacetaldehydes
IL84778A0 (en) Preparation of mercaptobenzoates
IL82217A0 (en) Preparation of 1-aryl-5-amino-pyrazoles
GB2196961B (en) Preparation of polyfluoroenolates
IL82670A0 (en) Preparation of oxetane-3-carboxylic acids
GB2187737B (en) Preparation of 2,6-dihalo-4-cyanophenol esters
GB8710269D0 (en) Preparation of food-stuffs
GB8708603D0 (en) Preparation of()-13-norfaranal
IL83517A (en) Preparation of n-cyano-methylarylcarboxamides

Legal Events

Date Code Title Description
RH Patent void