BR0318653A - processo de purificação para lactìdeos - Google Patents

processo de purificação para lactìdeos

Info

Publication number
BR0318653A
BR0318653A BRPI0318653-9A BR0318653A BR0318653A BR 0318653 A BR0318653 A BR 0318653A BR 0318653 A BR0318653 A BR 0318653A BR 0318653 A BR0318653 A BR 0318653A
Authority
BR
Brazil
Prior art keywords
lactide
purification process
lactide purification
rectification
purification
Prior art date
Application number
BRPI0318653-9A
Other languages
English (en)
Inventor
Johannes Meerdink
Nils Dan Anders S Dergard
Original Assignee
Tate & Lyle Plc
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 Tate & Lyle Plc filed Critical Tate & Lyle Plc
Publication of BR0318653A publication Critical patent/BR0318653A/pt

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)
  • Polyesters Or Polycarbonates (AREA)
  • Heterocyclic Compounds That Contain Two Or More Ring Oxygen Atoms (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Glass Compositions (AREA)

Abstract

"PROCESSO DE PURIFICAçãO PARA LACTìDEOS". A presente invenção refere-se a um processo para a purificação de lactídeo a partir de uma corrente de produto em vapor de lactídeo bruto, processo o qual compreende uma etapa de retificação/condensação que leva a um condensado enriquecido em lactídeo.
BRPI0318653-9A 2003-12-10 2003-12-10 processo de purificação para lactìdeos BR0318653A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/NL2003/000875 WO2005056509A1 (en) 2003-12-10 2003-12-10 Purification process for lactide

Publications (1)

Publication Number Publication Date
BR0318653A true BR0318653A (pt) 2006-11-28

Family

ID=34676031

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0318653-9A BR0318653A (pt) 2003-12-10 2003-12-10 processo de purificação para lactìdeos

Country Status (15)

Country Link
US (1) US8053584B2 (pt)
EP (1) EP1694626B1 (pt)
CN (1) CN100586921C (pt)
AT (1) ATE378311T1 (pt)
AU (1) AU2003295252A1 (pt)
BR (1) BR0318653A (pt)
CA (1) CA2552395A1 (pt)
DE (1) DE60317581T2 (pt)
DK (1) DK1694626T3 (pt)
ES (1) ES2297252T3 (pt)
MX (1) MXPA06006613A (pt)
PL (1) PL210466B1 (pt)
PT (1) PT1694626E (pt)
SI (1) SI1694626T1 (pt)
WO (1) WO2005056509A1 (pt)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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 (fr) 2007-12-19 2009-06-24 Galactic S.A. Procédé d'obtention de lactide
AT506768B1 (de) 2008-04-16 2013-10-15 Jungbunzlauer Austria Ag Verfahren zur reinigung zyklischer diester der l- bzw. d-milchsäure
KR101698915B1 (ko) 2008-08-29 2017-01-23 우데 인벤타-피셔 게엠바하 락티드 유도체의 혼합물의 생성 방법
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
CN101857585A (zh) * 2010-05-21 2010-10-13 常州大学 丙交酯连续高真空精馏提纯方法
KR101326521B1 (ko) * 2011-05-26 2013-11-07 현대자동차주식회사 유산으로부터 락타이드의 제조 방법
CN102816143B (zh) * 2012-08-02 2014-06-11 武汉三江航天固德生物科技有限公司 一种丙交酯的耦合纯化方法
ES2536294T3 (es) 2012-10-26 2015-05-22 Uhde Inventa-Fischer Gmbh Procedimiento para preparar diésteres cíclicos, especialmente dilactida
US9365536B2 (en) 2012-11-22 2016-06-14 Kureha Corporation Method for producing glycolide, which is provided with rectification step by means of gas-liquid countercurrent contact, and method for purifying crude glycolide
EP2777791A1 (en) * 2013-03-11 2014-09-17 Sulzer Chemtech AG Process and apparatus for purification of a stream containing a cyclic ester of an alpha-hydroxycarboxylic acid
CN108031141B (zh) * 2017-11-24 2020-09-25 孝感市易生新材料有限公司 精制丙交酯的工艺设备及方法
CN112480064A (zh) * 2020-12-21 2021-03-12 天津科技大学 一种背包式连续精馏合成丙交酯的方法
CN112934139A (zh) * 2021-01-29 2021-06-11 南京华基塔业有限公司 一种乳酸制备丙交酯的强化微界面反应系统及方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5023350A (en) * 1990-05-24 1991-06-11 E. I. Du Pont De Nemours And Company Process for the purification of 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
US5236560A (en) 1992-03-13 1993-08-17 E. I. Du Pont De Nemours And Company Solventless dimeric cyclic ester distillation process
US5521278A (en) * 1994-08-18 1996-05-28 Ecological Chemical Products Integrated process for the manufacture of lactide

Also Published As

Publication number Publication date
DK1694626T3 (da) 2008-03-03
DE60317581D1 (de) 2007-12-27
CA2552395A1 (en) 2005-06-23
EP1694626A1 (en) 2006-08-30
US20080234500A1 (en) 2008-09-25
AU2003295252A2 (en) 2005-06-29
MXPA06006613A (es) 2007-01-26
ATE378311T1 (de) 2007-11-15
DE60317581T2 (de) 2008-09-04
CN1894193A (zh) 2007-01-10
PL210466B1 (pl) 2012-01-31
ES2297252T3 (es) 2008-05-01
PL380126A1 (pl) 2006-12-27
CN100586921C (zh) 2010-02-03
EP1694626B1 (en) 2007-11-14
PT1694626E (pt) 2008-02-11
AU2003295252A1 (en) 2005-06-29
SI1694626T1 (sl) 2008-02-29
US8053584B2 (en) 2011-11-08
WO2005056509A1 (en) 2005-06-23

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 8A ANUIDADE(S).

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2144 DE 07/02/2012.