BE712272A - - Google Patents
Info
- Publication number
- BE712272A BE712272A BE712272DA BE712272A BE 712272 A BE712272 A BE 712272A BE 712272D A BE712272D A BE 712272DA BE 712272 A BE712272 A BE 712272A
- Authority
- BE
- Belgium
- Prior art keywords
- composition
- glycolidic
- partially purified
- glycolide
- substantially pure
- Prior art date
Links
- 239000000203 mixture Substances 0.000 claims description 35
- 238000001816 cooling Methods 0.000 claims description 28
- RKDVKSZUMVYZHH-UHFFFAOYSA-N 1,4-dioxane-2,5-dione Chemical compound O=C1COC(=O)CO1 RKDVKSZUMVYZHH-UHFFFAOYSA-N 0.000 claims description 26
- 239000012535 impurity Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000001953 recrystallisation Methods 0.000 claims description 4
- 238000000746 purification Methods 0.000 claims description 2
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- 238000006116 polymerization reaction Methods 0.000 description 5
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 4
- 238000000859 sublimation Methods 0.000 description 4
- MSXVEPNJUHWQHW-UHFFFAOYSA-N 2-methylbutan-2-ol Chemical compound CCC(C)(C)O MSXVEPNJUHWQHW-UHFFFAOYSA-N 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 230000008022 sublimation Effects 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 229920000954 Polyglycolide Polymers 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- PHTQWCKDNZKARW-UHFFFAOYSA-N isoamylol Chemical compound CC(C)CCO PHTQWCKDNZKARW-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000004633 polyglycolic acid Substances 0.000 description 2
- 238000005979 thermal decomposition reaction Methods 0.000 description 2
- FWPIDFUJEMBDLS-UHFFFAOYSA-L tin(II) chloride dihydrate Chemical compound O.O.Cl[Sn]Cl FWPIDFUJEMBDLS-UHFFFAOYSA-L 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005092 sublimation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- CYRMSUTZVYGINF-UHFFFAOYSA-N trichlorofluoromethane Chemical compound FC(Cl)(Cl)Cl CYRMSUTZVYGINF-UHFFFAOYSA-N 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
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)
- Polyesters Or Polycarbonates (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE712272 | 1968-03-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE712272A true BE712272A (d) | 1968-09-16 |
Family
ID=3852568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE712272D BE712272A (d) | 1968-03-15 | 1968-03-15 |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE712272A (d) |
-
1968
- 1968-03-15 BE BE712272D patent/BE712272A/fr unknown
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2948424B1 (fr) | Procédé de purification de la vanilline naturelle | |
| EP3611162A1 (en) | Method for distilling dimethylsulfoxide and multistage distillation column | |
| FR2503159A1 (fr) | Procede de fabrication des bis(ether anhydride)s aromatiques par reaction d'echange avec l'anhydride phtalique | |
| EP0022697B1 (fr) | Procédé de préparation directe d'aldéhyde de bêta-méthylthio-propionique | |
| EP0340071B1 (fr) | Procédé de préparation du chlorure ferrique à partir du chlorure ferreux | |
| JPS58219136A (ja) | パ−弗素化分枝状エ−テル化合物 | |
| FR2500835A1 (fr) | Procede de synthese des mononitrates d'isosorbide | |
| BE712272A (d) | ||
| EP1012132B1 (fr) | Phosgenation sous pression des alcools pour la production des chloroformiates | |
| CH362233A (fr) | Procédé pour la préparation de polyanhydrides linéaires aromatiques à poids moléculaire élevé | |
| FR2543543A1 (fr) | Procede de decomposition par deshydratation pour la preparation d'un compose de carbonyle | |
| EP0222673B1 (fr) | Procédé de préparation de sels alcalins de l'acide trifluoroacétique à l'état anhydre et cristallisé | |
| EP0500435B1 (fr) | Utilisation d'isomères de mono et bis(méthylbenzyle)xylène comme fluide de transfert thermique | |
| GB567237A (en) | Improvements in and relating to the production of hydroxyacetic acid | |
| CH653010A5 (fr) | Hydrate de benzoate de benzyl-lignocaine. | |
| WO2001096284A1 (fr) | Procede de separation d'un compose de type hydroxybenzonitrile | |
| CH376895A (fr) | Procédé de préparation d'acétylacétamide | |
| CH285679A (fr) | Procédé de préparation de la cyclodécanol-1-one-2. | |
| RU2263659C1 (ru) | Способ очистки терефталоилхлорида | |
| BE558170A (d) | ||
| CH285680A (fr) | Procédé de préparation de la cyclo-tridécanol-1-one-2. | |
| BE1004535A3 (fr) | Procede de production du n-(2-chloroethyl)-methanesulfonamide. | |
| EP0003716A1 (fr) | Procédé de polymérisation d'oléfines, système catalytique utilisé et sa préparation | |
| BE406296A (d) | ||
| FR2467835A1 (fr) | Procede de separation et d'epuration de l'anthracene de l'huile d'anthracene |