DE69301817D1 - Ohne lösungsmitteldimer zyklisches esterdestillationsverfahren - Google Patents
Ohne lösungsmitteldimer zyklisches esterdestillationsverfahrenInfo
- Publication number
- DE69301817D1 DE69301817D1 DE69301817T DE69301817T DE69301817D1 DE 69301817 D1 DE69301817 D1 DE 69301817D1 DE 69301817 T DE69301817 T DE 69301817T DE 69301817 T DE69301817 T DE 69301817T DE 69301817 D1 DE69301817 D1 DE 69301817D1
- Authority
- DE
- Germany
- Prior art keywords
- solvent
- cyclic ester
- distillation process
- ester distillation
- dimer cyclic
- 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 - Fee Related
Links
Classifications
-
- 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
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/143—Fractional distillation or use of a fractionation or rectification column by two or more of a fractionation, separation or rectification step
- B01D3/146—Multiple effect distillation
-
- 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
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S203/00—Distillation: processes, separatory
- Y10S203/20—Power plant
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S203/00—Distillation: processes, separatory
- Y10S203/22—Accessories
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Heterocyclic Compounds That Contain Two Or More Ring Oxygen Atoms (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Polyesters Or Polycarbonates (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/813,189 US5236560A (en) | 1992-03-13 | 1992-03-13 | Solventless dimeric cyclic ester distillation process |
PCT/US1993/002298 WO1993018020A1 (en) | 1992-03-13 | 1993-03-15 | Solventless dimeric cyclic ester distillation process |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69301817D1 true DE69301817D1 (de) | 1996-04-18 |
DE69301817T2 DE69301817T2 (de) | 1996-09-19 |
Family
ID=25211708
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69301817T Expired - Fee Related DE69301817T2 (de) | 1992-03-13 | 1993-03-15 | Ohne lösungsmitteldimer zyklisches esterdestillationsverfahren |
Country Status (6)
Country | Link |
---|---|
US (1) | US5236560A (de) |
EP (1) | EP0630371B1 (de) |
JP (1) | JPH07505150A (de) |
CA (1) | CA2131788A1 (de) |
DE (1) | DE69301817T2 (de) |
WO (1) | WO1993018020A1 (de) |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5444113A (en) * | 1988-08-08 | 1995-08-22 | Ecopol, Llc | End use applications of biodegradable polymers |
US5767222A (en) * | 1988-08-08 | 1998-06-16 | Chronopol, Inc. | Degradable polydioxaneone-based materials |
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 |
US6005067A (en) | 1992-01-24 | 1999-12-21 | 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 |
WO1994008078A1 (en) * | 1992-10-02 | 1994-04-14 | Cargill, Incorporated | A melt-stable lactide polymer fabric and process for manufacture thereof |
US5338822A (en) * | 1992-10-02 | 1994-08-16 | Cargill, Incorporated | Melt-stable lactide polymer composition and process for manufacture thereof |
US5521278A (en) * | 1994-08-18 | 1996-05-28 | Ecological Chemical Products | Integrated process for the manufacture of lactide |
FR2726559B1 (fr) * | 1994-11-04 | 1997-01-31 | Flamel Tech Sa | Procede de production d'esters cycliques d'acides alpha-hydroxycarboxyliques |
JPH10109983A (ja) * | 1996-10-04 | 1998-04-28 | Mitsubishi Gas Chem Co Inc | 環状エステルの製造方法および精製方法 |
US6313319B1 (en) | 1998-09-25 | 2001-11-06 | Shimadzu Corporation | Method for purifying lactide and lactide for food additives |
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 |
WO2005056509A1 (en) * | 2003-12-10 | 2005-06-23 | Tate & Lyle Public Limited Company | Purification process for lactide |
CA2670934C (en) * | 2006-11-28 | 2016-01-12 | Purac Biochem Bv | Stable lactide particles |
EP2031009A1 (de) | 2007-09-03 | 2009-03-04 | Uhde Inventa-Fischer GmbH | Reinigungsvorrichtung zur Abtrennung von Dilactid aus Stoffgemischen, Polymerisationsvorrichtung, Verfahren zur Abtrennung von Dilactid aus Stoffgemischen sowie Verwendung |
EP2072508A1 (de) * | 2007-12-19 | 2009-06-24 | Galactic S.A. | Herstellungsverfahren von Laktid |
JP5459974B2 (ja) * | 2008-04-11 | 2014-04-02 | 株式会社日立製作所 | 精製乳酸環状二量体の製造方法及び製造装置、並びに、ポリ乳酸の製造方法及び製造装置 |
AT506768B1 (de) | 2008-04-16 | 2013-10-15 | Jungbunzlauer Austria Ag | Verfahren zur reinigung zyklischer diester der l- bzw. d-milchsäure |
US8765217B2 (en) | 2008-11-04 | 2014-07-01 | Entrotech, Inc. | Method for continuous production of (meth)acrylate syrup and adhesives therefrom |
US8329079B2 (en) | 2009-04-20 | 2012-12-11 | Entrochem, Inc. | Method and apparatus for continuous production of partially polymerized compositions and polymers therefrom |
CN101696203B (zh) * | 2009-10-26 | 2013-02-06 | 江苏科技大学 | 从粗l-丙交酯连续精制l-丙交酯的方法 |
CN101979389B (zh) * | 2010-10-28 | 2013-05-22 | 西北大学 | 一种丙交酯的分离装置 |
WO2013160485A1 (de) * | 2012-04-28 | 2013-10-31 | Uhde Inventa-Fischer Gmbh | Verfahren zur kontinuierlichen herstellung von lactid direkt aus konzentrierter milchsäure |
EP2777791A1 (de) * | 2013-03-11 | 2014-09-17 | Sulzer Chemtech AG | Verfahren und Vorrichtung zum Reinigen eines Stromes mit einem zyklischen Ester einer Alpha-Hydroxycarboxylsäure |
EP2994462B2 (de) | 2013-05-06 | 2019-08-21 | Futerro S.A. | Verfahren zur rückgewinnung und verbesserung der herstellung von meso-lactid aus einem rohes lactid enthaltenden strom |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1095205A (en) * | 1913-05-15 | 1914-05-05 | Chemische Werke Vorm Dr Heinrich Byk | Manufacture of lactid. |
US2668162A (en) * | 1952-03-20 | 1954-02-02 | Du Pont | Preparation of high molecular weight polyhydroxyacetic ester |
GB1108720A (en) * | 1966-10-10 | 1968-04-03 | Wolfen Filmfab Veb | Process for the manufacture of cyclic ester anhydrides of ª-hydroxy-carboxylic acids |
DE3708915C2 (de) * | 1987-03-19 | 1996-04-04 | Boehringer Ingelheim Kg | Verfahren zur Herstellung von Lactid |
DE3778111D1 (de) * | 1986-10-24 | 1992-05-14 | Boehringer Ingelheim Kg | Verfahren zur herstellung und reinigung thermolabiler verbindungen. |
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 |
JPH02500593A (ja) * | 1987-06-16 | 1990-03-01 | ベーリンガー インゲルハイム コマンディットゲゼルシャフト | メソラクチド及びその製造方法 |
EP0339882A1 (de) * | 1988-04-27 | 1989-11-02 | MITSUI TOATSU CHEMICALS, Inc. | Verfahren zur Herstellung von Lactide |
US5043458A (en) * | 1990-05-03 | 1991-08-27 | E. I. Du Pont De Nemours And Company | One-step continuous process for preparing cyclic esters |
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 |
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 |
US5089632A (en) * | 1991-01-30 | 1992-02-18 | E. I. Du Pont De Nemours And Company | Process for preparing cyclic esters using a fluorocarbon |
-
1992
- 1992-03-13 US US07/813,189 patent/US5236560A/en not_active Expired - Lifetime
-
1993
- 1993-03-15 DE DE69301817T patent/DE69301817T2/de not_active Expired - Fee Related
- 1993-03-15 EP EP93907478A patent/EP0630371B1/de not_active Expired - Lifetime
- 1993-03-15 JP JP5516033A patent/JPH07505150A/ja active Pending
- 1993-03-15 CA CA002131788A patent/CA2131788A1/en not_active Abandoned
- 1993-03-15 WO PCT/US1993/002298 patent/WO1993018020A1/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
EP0630371A1 (de) | 1994-12-28 |
CA2131788A1 (en) | 1993-09-16 |
EP0630371B1 (de) | 1996-03-13 |
JPH07505150A (ja) | 1995-06-08 |
US5236560A (en) | 1993-08-17 |
DE69301817T2 (de) | 1996-09-19 |
WO1993018020A1 (en) | 1993-09-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |