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
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.
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)
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 |
-
1996
- 1996-11-07 JP JP29520396A patent/JPH10139731A/ja active Pending
-
1997
- 1997-10-30 EP EP19970118881 patent/EP0841319B1/en not_active Expired - Lifetime
- 1997-10-30 ES ES97118881T patent/ES2159079T3/es not_active Expired - Lifetime
- 1997-10-30 DE DE1997605287 patent/DE69705287T2/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE69705287T2 (de) | 2001-10-18 |
EP0841319A1 (en) | 1998-05-13 |
EP0841319B1 (en) | 2001-06-20 |
JPH10139731A (ja) | 1998-05-26 |
DE69705287D1 (de) | 2001-07-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
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