FR2405918A1 - Procede d'extraction d'esters de glycols vicinaux purifies - Google Patents
Procede d'extraction d'esters de glycols vicinaux purifiesInfo
- Publication number
- FR2405918A1 FR2405918A1 FR7828867A FR7828867A FR2405918A1 FR 2405918 A1 FR2405918 A1 FR 2405918A1 FR 7828867 A FR7828867 A FR 7828867A FR 7828867 A FR7828867 A FR 7828867A FR 2405918 A1 FR2405918 A1 FR 2405918A1
- Authority
- FR
- France
- Prior art keywords
- esters
- high boiling
- organic impurities
- halogenated organic
- product
- 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.)
- Withdrawn
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
- C07C67/54—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S203/00—Distillation: processes, separatory
- Y10S203/20—Power plant
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
L'invention concerne la purification par extraction des esters de glycols vicinaux à partir d'un mélange impur d'esters contenant des composés organiques halogénés à bas point et à haut point d'ébullition. On distille le mélange dans une première zone de distillation 70 pour former un produit de queue contenant les impuretés organiques halogénées à haut point d'ébullition 96 et un premier produit de tête 72 contenant les esters désirés en mélange avec des impuretés organiques halogénées à point d'ébullition élevé; puis on distille au moins une fraction 84 du courant 72 dans une deuxième zone de distillation 100 pour former un deuxième produit de tête 102 contenant les impuretés organiques halogénées à bas point d'ébullition et un deuxième produit de queue 104 contenant les esters purifiés. Application : obtention d'esters d'éthylène- ou de propylène-glycol ayant une concentration très réduite en impuretés organiques halogénées.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/841,082 US4153806A (en) | 1977-10-11 | 1977-10-11 | Recovery of vicinal glycol esters by plural stage distillation |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2405918A1 true FR2405918A1 (fr) | 1979-05-11 |
Family
ID=25283971
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7828867A Withdrawn FR2405918A1 (fr) | 1977-10-11 | 1978-10-10 | Procede d'extraction d'esters de glycols vicinaux purifies |
Country Status (9)
Country | Link |
---|---|
US (1) | US4153806A (fr) |
JP (1) | JPS5461113A (fr) |
BE (1) | BE871111A (fr) |
BR (1) | BR7806650A (fr) |
DE (1) | DE2844337A1 (fr) |
FR (1) | FR2405918A1 (fr) |
GB (1) | GB2006203B (fr) |
IT (1) | IT1109278B (fr) |
NL (1) | NL7810023A (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5356520A (en) * | 1993-02-26 | 1994-10-18 | Mallinckrodt Medical Pmc | Separation of high boiling point solvents from amyl acetate |
US20110087047A1 (en) * | 2009-10-09 | 2011-04-14 | Noel Hallinan | Vinyl acetate production process |
US20110137075A1 (en) * | 2009-12-09 | 2011-06-09 | Brtko Wayne J | Vinyl acetate production process |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3140243A (en) * | 1964-07-07 | Light | ||
US3719722A (en) * | 1970-09-30 | 1973-03-06 | Petro Tex Chem Corp | Purification of unsaturated product |
US3859368A (en) * | 1971-09-08 | 1975-01-07 | Halcon International Inc | Method of producing polyhydric compounds such as ethylene glycol by disproportionation of its monoacetate |
BE791577A (fr) * | 1971-11-19 | 1973-05-17 | Monsanto Co | Purification de courants d'acide carboxylique |
US3907874A (en) * | 1972-08-09 | 1975-09-23 | Halcon International Inc | Vicinal glycol ester preparation process |
-
1977
- 1977-10-11 US US05/841,082 patent/US4153806A/en not_active Expired - Lifetime
-
1978
- 1978-10-04 NL NL7810023A patent/NL7810023A/xx not_active Application Discontinuation
- 1978-10-06 BR BR7806650A patent/BR7806650A/pt unknown
- 1978-10-09 BE BE190997A patent/BE871111A/fr unknown
- 1978-10-10 FR FR7828867A patent/FR2405918A1/fr not_active Withdrawn
- 1978-10-10 GB GB7839916A patent/GB2006203B/en not_active Expired
- 1978-10-11 IT IT51468/78A patent/IT1109278B/it active
- 1978-10-11 DE DE2844337A patent/DE2844337A1/de not_active Withdrawn
- 1978-10-11 JP JP12498578A patent/JPS5461113A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
BE871111A (fr) | 1979-04-09 |
IT7851468A0 (it) | 1978-10-11 |
DE2844337A1 (de) | 1979-04-12 |
US4153806A (en) | 1979-05-08 |
GB2006203A (en) | 1979-05-02 |
JPS57848B2 (fr) | 1982-01-08 |
BR7806650A (pt) | 1979-05-02 |
JPS5461113A (en) | 1979-05-17 |
GB2006203B (en) | 1982-03-31 |
NL7810023A (nl) | 1979-04-17 |
IT1109278B (it) | 1985-12-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |