FI117052B - Menetelmä laktidin puhdistamiseksi - Google Patents

Menetelmä laktidin puhdistamiseksi Download PDF

Info

Publication number
FI117052B
FI117052B FI945636A FI945636A FI117052B FI 117052 B FI117052 B FI 117052B FI 945636 A FI945636 A FI 945636A FI 945636 A FI945636 A FI 945636A FI 117052 B FI117052 B FI 117052B
Authority
FI
Finland
Prior art keywords
lactide
meso
crude
lactic acid
water
Prior art date
Application number
FI945636A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI945636A (fi
FI945636A0 (fi
Inventor
Yoshiaki Yamaguchi
Tomohiro Arimura
Original Assignee
Musashino Kagaku Kenkyusho
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 Musashino Kagaku Kenkyusho filed Critical Musashino Kagaku Kenkyusho
Publication of FI945636A0 publication Critical patent/FI945636A0/fi
Publication of FI945636A publication Critical patent/FI945636A/fi
Application granted granted Critical
Publication of FI117052B publication Critical patent/FI117052B/fi

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)
  • Heterocyclic Compounds That Contain Two Or More Ring Oxygen Atoms (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Polyesters Or Polycarbonates (AREA)
FI945636A 1993-12-08 1994-11-29 Menetelmä laktidin puhdistamiseksi FI117052B (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP5308346A JPH07165753A (ja) 1993-12-08 1993-12-08 ラクチドの精製方法
JP30834693 1993-12-08

Publications (3)

Publication Number Publication Date
FI945636A0 FI945636A0 (fi) 1994-11-29
FI945636A FI945636A (fi) 1995-06-09
FI117052B true FI117052B (fi) 2006-05-31

Family

ID=17979960

Family Applications (1)

Application Number Title Priority Date Filing Date
FI945636A FI117052B (fi) 1993-12-08 1994-11-29 Menetelmä laktidin puhdistamiseksi

Country Status (6)

Country Link
US (1) US5502215A (zh)
EP (1) EP0657447B1 (zh)
JP (1) JPH07165753A (zh)
CN (1) CN1060170C (zh)
DE (1) DE69405201T2 (zh)
FI (1) FI117052B (zh)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6087459A (en) * 1998-05-14 2000-07-11 Exxon Chemical Patents Inc. Polymeric materials formed using blends of electron donors
US6313319B1 (en) 1998-09-25 2001-11-06 Shimadzu Corporation Method for purifying lactide and lactide for food additives
WO2000018756A1 (fr) * 1998-09-25 2000-04-06 Shimadzu Corporation Purification de lactide et lactide utilise comme additif alimentaire
EP1163200B9 (en) * 1999-03-22 2005-03-16 Purac Biochem B.V. Method of industrial-scale purification of lactic acid
EP1136480A1 (fr) * 2000-03-23 2001-09-26 Brussels Biotech Procedé de purification d'esters cycliques
US6984293B2 (en) * 2001-03-15 2006-01-10 Tate & Lyle Ingredients Azeotropic distillation of cyclic esters of hydroxy organic acids
DE10145223A1 (de) * 2001-09-13 2003-04-03 Basf Ag Verfahren zur Herstellung von meso-Zeaxanthin
BE1015060A3 (fr) * 2002-08-06 2004-09-07 Brussels Biotech Nv Sa Procede de production de polylactide au depart d'une solution d'acide lactique ou d'un de ses derives.
DE102006024016B4 (de) * 2006-05-23 2008-04-03 Infineon Technologies Ag Speicher mit einem Ausgangsregister für Testdaten und Verfahren zum Testen eines Speichers
AT506768B1 (de) 2008-04-16 2013-10-15 Jungbunzlauer Austria Ag Verfahren zur reinigung zyklischer diester der l- bzw. d-milchsäure
CN103896908B (zh) * 2008-08-29 2016-08-31 伍德伊万特-费休股份有限公司 制备丙交酯衍生物的混合物的方法
WO2010105143A2 (en) * 2009-03-13 2010-09-16 Natureworks Llc Methods for producing lactide with recycle of meso-lactide
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
CN101845038B (zh) * 2010-05-13 2014-01-15 中国石油天然气集团公司 丙交酯精制残液处理方法及装置
EP2732042A1 (en) * 2011-07-15 2014-05-21 Plaxica Limited Separation process
US20150152449A1 (en) * 2012-06-11 2015-06-04 Plaxica Limited Lactate Production Process
US20150329694A1 (en) * 2012-07-02 2015-11-19 Unitika Ltd. Polylactic acid resin composition and molded body which is obtained using same
EP2725019B1 (de) 2012-10-26 2015-04-08 Uhde Inventa-Fischer GmbH Verfahren zur Herstellung cyclischer Diester, insbesondere Dilactid
WO2016097002A1 (en) 2014-12-17 2016-06-23 Purac Biochem Bv Substrates coated or bonded with a composition comprising a polyurethane
EP3034534A1 (en) 2014-12-17 2016-06-22 PURAC Biochem BV Substrates coated or bonded with a composition comprising a polyurethane
CN104861157B (zh) * 2015-06-01 2016-09-28 中国科学院长春应用化学研究所 一种低光学纯度高分子量聚乳酸的制备方法
WO2017050928A1 (en) 2015-09-22 2017-03-30 Purac Biochem Bv Process for manufacturing cooked meat products
KR101704563B1 (ko) 2015-10-12 2017-02-08 한국화학연구원 락타이드 정제공정을 이용한 락타이드 제조방법 및 제조장치
CN105440011A (zh) * 2015-12-17 2016-03-30 常州大学 一种快速提纯久置环酯的方法
CN106397388B (zh) * 2016-09-07 2019-02-01 南京大学科技园发展有限公司 一种粗品环酯纯化制备高纯度环酯的工艺
DE202018107306U1 (de) 2017-01-10 2019-01-28 Mitsubishi Hitec Paper Europe Gmbh Neuartiger Farbentwickler für ein wärmeempfindliches Aufzeichnungsmedium und ein wärmeempfindliches Aufzeichnungsmaterial auf der Basis PLA
CN106892894B (zh) * 2017-03-01 2021-07-02 中国科学院长春应用化学研究所 一种高光学纯度丙交酯的制备方法
RU2699801C1 (ru) * 2018-11-20 2019-09-11 Федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский Томский государственный университет" (ТГУ, НИ ТГУ) Способ очистки лактида
CN114478470B (zh) * 2020-10-28 2024-04-19 中国石油化工股份有限公司 一种提纯丙交酯的方法
CN116063270B (zh) 2021-10-31 2024-08-06 中国石油化工股份有限公司 一种梯级控制连续制备丙交酯的方法及系统

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0261572A1 (de) * 1986-09-20 1988-03-30 Boehringer Ingelheim Kg Verfahren zur Herstellung von Lactid
DD301436A7 (de) * 1988-06-23 1993-01-21 Inst Polymerenchemie Der Adw Verfahren zur reinigung von 1,4-dioxan-2,5-dion oder d,l- bzw. l,l-3,6-dimethyl-1,4-dioxan-2,5-dion
US5274127A (en) * 1990-09-18 1993-12-28 Biopak Technology, Ltd. Lactide production from dehydration of aqueous lactic acid feed
DE3917178A1 (de) * 1989-05-26 1990-11-29 Boehringer Ingelheim Kg Verbessertes verfahren zur herstellung von d,l-lactid
EP0591188A1 (en) * 1990-07-13 1994-04-13 E.I. Du Pont De Nemours And Company High yield recycle process for lactide

Also Published As

Publication number Publication date
JPH07165753A (ja) 1995-06-27
US5502215A (en) 1996-03-26
EP0657447A1 (en) 1995-06-14
CN1112559A (zh) 1995-11-29
DE69405201D1 (de) 1997-10-02
DE69405201T2 (de) 1998-01-29
EP0657447B1 (en) 1997-08-27
FI945636A (fi) 1995-06-09
CN1060170C (zh) 2001-01-03
FI945636A0 (fi) 1994-11-29

Similar Documents

Publication Publication Date Title
FI117052B (fi) Menetelmä laktidin puhdistamiseksi
FI95697C (fi) Laktidin valmistus dehydratoimalla sopivasti vesipitoista maitohapposyötettä
ES2566667T3 (es) Procedimiento para la producción de alcoholes de azúcar anhidros
KR920000648B1 (ko) α-L-아스파르틸-L-페닐알라닌 메틸 에스테르의 분리방법
FI94239C (fi) Menetelmä tryptofaanin puhdistamiseksi
EP0325965A2 (en) A process for the optical resolution of a racemic acid
FR2481287A1 (fr) Procede pour la preparation et la purification d'anhydrides d'acides dicarboxyliques et polycarboxyliques
KR970006885B1 (ko) 2-하이드록시나프탈렌-6-카복실산의 정제방법
Ando et al. Chemistry of chiral vitamin B6 analogs. IV. Syntheses of chiral pyridoxal and pyridoxamine analogs having a branched" ansa chain" between 2'-and 5'-positions.
FR2470771A1 (fr) Procede de preparation des derives de l'acide 7-amino-desacetoxy cephalosporanique
BE1000625A3 (fr) Sels d'acide (3s(z)) -2 (((1-(2-amino-4-thiazolyl)-2- ((2,2-dimethyl-4-oxo-1- (sulfooxy) -3-azetidinyl) amino) -2-oxoethylidene) amino) oxo) acetique, leur preparation et leur utilisation.
US4970336A (en) Method of purifying α-substituted acetic acids
KR100235375B1 (ko) 2-아미노나프티리딘 유도체의 광학 이성질체 제조 방법
KR100235374B1 (ko) 2-아미노나프티리딘 유도체의 광학 이성질체 제조 방법
JP2001516781A (ja) フタル酸のモノエステル及び大環状ジエステル及びその合成
KR100219994B1 (ko) 글리세르알데하이드-3-펜타나이드 및 이의 제조방법
AU658662B2 (en) Process for the preparation of a dextrogyral isomer of an isoindolinone derivative
EP0320898A2 (en) Processes and compounds useful for resolving 1-methyl-3-phenylpropylamine
HU221649B1 (hu) Eljárás N-(4-fluor-fenil)-N-(1-metil-etil)-2-[5-(trifluor-metil)-1,3,4-tiadiazol-2-il]-oxi-acetamid előállítására aprotikus aromás oldószer alkalmazásával
JP2005002010A (ja) 光学活性ラクトンの製造方法
JPH0798802B2 (ja) 光学活性インドリン―２―カルボン酸の製造法
FR2678931A1 (fr) Nouveau derive de l'amino-2 naphtyridine, sa preparation et son emploi.
CN116041214A (zh) 一种普瑞巴林中间体的制备方法及其应用
JPS5911592B2 (ja) ２−オキサゾリジノン化合物の製法
CN110628006A (zh) 一种吗啉2,5-二酮/l-丙交酯聚合物的合成方法

Legal Events

Date Code Title Description
FG Patent granted

Ref document number: 117052

Country of ref document: FI

MA Patent expired