BR0016429B1 - mÉtodo para purificar Ésteres de Ácido lÁctico, e, uso de cristalizaÇço em fusço. - Google Patents

mÉtodo para purificar Ésteres de Ácido lÁctico, e, uso de cristalizaÇço em fusço.

Info

Publication number
BR0016429B1
BR0016429B1 BRPI0016429-1A BR0016429A BR0016429B1 BR 0016429 B1 BR0016429 B1 BR 0016429B1 BR 0016429 A BR0016429 A BR 0016429A BR 0016429 B1 BR0016429 B1 BR 0016429B1
Authority
BR
Brazil
Prior art keywords
lactic acid
acid esters
sub
melting crystallization
purifying lactic
Prior art date
Application number
BRPI0016429-1A
Other languages
English (en)
Other versions
BR0016429A (pt
Inventor
Krieken Jan Van
Vries Johannes Jeichinus De
Symone Kok
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 filed Critical
Publication of BR0016429A publication Critical patent/BR0016429A/pt
Publication of BR0016429B1 publication Critical patent/BR0016429B1/pt

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/48—Separation; Purification; Stabilisation; Use of additives
    • C07C67/52—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
BRPI0016429-1A 1999-12-16 2000-11-24 mÉtodo para purificar Ésteres de Ácido lÁctico, e, uso de cristalizaÇço em fusço. BR0016429B1 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1013870A NL1013870C2 (nl) 1999-12-16 1999-12-16 Werkwijze voor het zuiveren van melkzure esters.
PCT/NL2000/000860 WO2001044157A1 (en) 1999-12-16 2000-11-24 Method of purifying lactic acid esters

Publications (2)

Publication Number Publication Date
BR0016429A BR0016429A (pt) 2002-08-20
BR0016429B1 true BR0016429B1 (pt) 2010-08-24

Family

ID=19770449

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0016429-1A BR0016429B1 (pt) 1999-12-16 2000-11-24 mÉtodo para purificar Ésteres de Ácido lÁctico, e, uso de cristalizaÇço em fusço.

Country Status (13)

Country Link
US (1) US6967257B1 (pt)
EP (1) EP1237841B1 (pt)
JP (1) JP5065563B2 (pt)
CN (1) CN1184188C (pt)
AT (1) ATE258158T1 (pt)
AU (1) AU2557101A (pt)
BR (1) BR0016429B1 (pt)
DE (1) DE60007895T2 (pt)
DK (1) DK1237841T3 (pt)
ES (1) ES2211661T3 (pt)
NL (1) NL1013870C2 (pt)
PT (1) PT1237841E (pt)
WO (1) WO2001044157A1 (pt)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5000814B2 (ja) * 2001-06-05 2012-08-15 東邦化学工業株式会社 乳酸エチル中の不純物の除去方法
BE1019021A3 (fr) * 2009-07-01 2012-01-10 Galactic Sa Procede de preparation de lactate d'alkyle c1-c4 de grande purete par putrification des lactates d'alkyle c1-c4 bruts.
BE1019857A3 (fr) * 2011-03-03 2013-01-08 Galactic Sa Procede de separation des deux isomeres de l'acide lactique et utilisation des isomeres ainsi recuperes.
NL2028900B1 (en) 2021-08-02 2023-02-17 Arapaha B V A method of closed loop recycling of polylactic acid
CN115436511A (zh) * 2022-08-31 2022-12-06 汉瑞药业(荆门)有限公司 一种乳酸乙酯及其对映异构体手性纯度的hplc检测方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3433400A1 (de) * 1984-09-12 1986-03-20 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung von milchsaeureestern
JPS6226249A (ja) * 1985-07-26 1987-02-04 Daicel Chem Ind Ltd 光学活性乳酸エステルの精製方法
US5264592A (en) * 1992-09-08 1993-11-23 Camelot Technologies Inc. Lactide melt recrystallization
CA2115472C (en) * 1993-02-17 2002-08-13 William George O'brien Melt crystallization purification of lactides
JPH0940663A (ja) * 1995-08-01 1997-02-10 Toyobo Co Ltd α−オキシ酸の分子間環状ジエステルの精製方法
JP4105797B2 (ja) * 1998-05-11 2008-06-25 三菱レイヨン株式会社 光学活性α−トリフルオロメチル乳酸の精製方法

Also Published As

Publication number Publication date
ES2211661T3 (es) 2004-07-16
PT1237841E (pt) 2004-04-30
DE60007895T2 (de) 2004-06-09
DE60007895D1 (de) 2004-02-26
DK1237841T3 (da) 2004-02-23
EP1237841B1 (en) 2004-01-21
EP1237841A1 (en) 2002-09-11
JP2003517031A (ja) 2003-05-20
NL1013870C2 (nl) 2001-06-21
CN1411433A (zh) 2003-04-16
US6967257B1 (en) 2005-11-22
WO2001044157A1 (en) 2001-06-21
BR0016429A (pt) 2002-08-20
JP5065563B2 (ja) 2012-11-07
CN1184188C (zh) 2005-01-12
ATE258158T1 (de) 2004-02-15
AU2557101A (en) 2001-06-25

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Legal Events

Date Code Title Description
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 24/11/2000, OBSERVADAS AS CONDICOES LEGAIS.

B21A Patent or certificate of addition expired [chapter 21.1 patent gazette]

Free format text: PATENTE EXTINTA EM 24.11.2020