ES2159079T3 - Procedimiento de preparacion de lactatos. - Google Patents

Procedimiento de preparacion de lactatos.

Info

Publication number
ES2159079T3
ES2159079T3 ES97118881T ES97118881T ES2159079T3 ES 2159079 T3 ES2159079 T3 ES 2159079T3 ES 97118881 T ES97118881 T ES 97118881T ES 97118881 T ES97118881 T ES 97118881T ES 2159079 T3 ES2159079 T3 ES 2159079T3
Authority
ES
Spain
Prior art keywords
lactate
preparation
distillation column
lactates
procedure
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 - Lifetime
Application number
ES97118881T
Other languages
English (en)
Inventor
Takafumi Mitsubishi Gas Ch Abe
Yoshikazu Mitsubishi Gas Shima
Kazuto Mitsubishi Gas Ikemoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Gas Chemical Co Inc
Original Assignee
Mitsubishi Gas Chemical Co Inc
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 Mitsubishi Gas Chemical Co Inc filed Critical Mitsubishi Gas Chemical Co Inc
Application granted granted Critical
Publication of ES2159079T3 publication Critical patent/ES2159079T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/18—Preparation of carboxylic acid esters by conversion of a group containing nitrogen into an ester group
    • C07C67/20—Preparation of carboxylic acid esters by conversion of a group containing nitrogen into an ester group from amides or lactams
    • 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
    • C07C67/54—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

SE DESCUBRE UN PROCESO PARA LA PREPARACION DE LACTATO MEDIANTE LA REACCION DE LACTAMIDA Y UN FORMATO QUE COMPRENDE LA ETAPA DE RECUPERAR COMPONENTES QUE POSEEN UN PUNTO DE EBULLICION INFERIOR AL DEL LACTATO A PARTIR DE UNA SOLUCION DE REACCION POR DESTILACION EN UNAS CONDICIONES EN LAS QUE M ES 16 O INFERIOR, DEFINIENDOSE M DEL MODO SIGUIENTE: TIEMPO DE RETENCION DEL LIQUIDO EN EL FONDO DE LA COLUMNA DE DESTILACION (HORAS) MULTIPLICADO POR (LA TEMPERATURA DEL FONDO DE LA COLUMNA DE DESTILACION MENOS 126) ( C). DE CONFORMIDAD CON ESTE PROCESO, EL LACTATO PUEDE PURIFICARSE POR DESTILACION INCLUSO A PRESION ATMOSFERICA O SUPERIOR, MIENTRAS SE RESTRINGE LA PRODUCCION DE 2 FORMILOXI PROPIONATO, DE MODO QUE EL LACTATO PUEDE PREPARARSE A ELEVADO RENDIMIENTO.
ES97118881T 1996-11-07 1997-10-30 Procedimiento de preparacion de lactatos. Expired - Lifetime ES2159079T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29520396A JPH10139731A (ja) 1996-11-07 1996-11-07 乳酸エステルの製造方法

Publications (1)

Publication Number Publication Date
ES2159079T3 true ES2159079T3 (es) 2001-09-16

Family

ID=17817542

Family Applications (1)

Application Number Title Priority Date Filing Date
ES97118881T Expired - Lifetime ES2159079T3 (es) 1996-11-07 1997-10-30 Procedimiento de preparacion de lactatos.

Country Status (4)

Country Link
EP (1) EP0841319B1 (es)
JP (1) JPH10139731A (es)
DE (1) DE69705287T2 (es)
ES (1) ES2159079T3 (es)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4159925A (en) * 1975-04-30 1979-07-03 Bayer Aktiengesellschaft Process for isolating propylene glycol diesters in the preparation of propylene oxide
US4975157A (en) * 1990-07-12 1990-12-04 Lloyd Berg Separation of lactate esters by extractive distillation
JP3191842B2 (ja) * 1994-02-21 2001-07-23 三菱瓦斯化学株式会社 乳酸エステルの製造法

Also Published As

Publication number Publication date
DE69705287D1 (de) 2001-07-26
EP0841319A1 (en) 1998-05-13
EP0841319B1 (en) 2001-06-20
JPH10139731A (ja) 1998-05-26
DE69705287T2 (de) 2001-10-18

Similar Documents

Publication Publication Date Title
NO308803B1 (no) FremgangsmÕte ved gjenvinning av en krystalliserbar organisk forbindelse fra løsninger inneholdende forbindelsen
KR920006274A (ko) 비스페놀-a의 정제법
BR9105939A (pt) Processo para a producao simultanea de xilitol e etanol
BR9916754A (pt) Processo para a produção de ésteres
FR2708601A1 (fr) Procédé de cristallisation d'Iopamidol.
AU582680B2 (en) Purification of glycolide
FR2787809B1 (fr) Procede de fabrication d'un sirop riche en maltose
ES2149931T3 (es) Procedimiento para la produccion de xilitol.
ES2159079T3 (es) Procedimiento de preparacion de lactatos.
ES2074044T3 (es) Metodo para la fabricacion de hns ii.
CA2293319A1 (en) Method for producing highly pure aqueous hydroxylamine solutions
FR2414556A1 (fr) Procede de preparation d'hydrolysats d'amidon contenant du maltose, et de production de maltose par cristallisation a partir de ces hydrolysats
KR890005028A (ko) 정제된 2.6-나프탈렌디카복실산의 비스(2-하이드록시에틸)에스테르 제조방법
ES2084905T3 (es) Procedimiento para la obtencion de cicloalcanoles.
KR910014340A (ko) 트란스, 트란스-이성체 함량이 높은 4, 4'-디이소시아네이토 디사이클로헥실메탄의 제조방법
JPS57146743A (en) Optical resolving method of (+-)-1-(1-naphthyl)ethylamine
CU22158A3 (es) Procedimiento para la fabricacion de quimopapaina de alta pureza
KR860001777A (ko) (-)-6,6-디메틸바이싸이클로[3.1.1]엡트-2-엔-2-에탄올 유도체의 제조방법
SU1587862A3 (ru) Способ получения дифторхлорметана
TH13677A (th) กรรมวิธีสำหรับการผลิตกรดเทเรฟธาลิคที่ได้ทำให้บริสุทธิ์
MX9303172A (es) Procedimiento para la produccion de acido tereftalico purificado.
KR850005986A (ko) 연탄재로부터 알루미나를 생산하는 방법
RU92004170A (ru) Способ очистки воздуха от двуокиси углерода
KR860001776A (ko) (-)-6,6-디메틸바이싸이클로[3.3.1]엡트-2-엔-2-메탄올 유도체의 제조방법
KR950014074A (ko) 이소프로필안티피린의 제조방법

Legal Events

Date Code Title Description
FG2A Definitive protection

Ref document number: 841319

Country of ref document: ES