CH346535A - Verfahren zum Reinigen von Dimethylterephthalat - Google Patents
Verfahren zum Reinigen von DimethylterephthalatInfo
- Publication number
- CH346535A CH346535A CH346535DA CH346535A CH 346535 A CH346535 A CH 346535A CH 346535D A CH346535D A CH 346535DA CH 346535 A CH346535 A CH 346535A
- Authority
- CH
- Switzerland
- Prior art keywords
- dimethyl terephthalate
- distillation
- purifying dimethyl
- terephthalate
- glycol
- Prior art date
Links
- WOZVHXUHUFLZGK-UHFFFAOYSA-N dimethyl terephthalate Chemical compound COC(=O)C1=CC=C(C(=O)OC)C=C1 WOZVHXUHUFLZGK-UHFFFAOYSA-N 0.000 title claims description 26
- 238000000034 method Methods 0.000 title claims description 5
- 238000004821 distillation Methods 0.000 claims description 10
- -1 alkylene glycols Chemical class 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 14
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 4
- 238000000746 purification Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- 238000006068 polycondensation reaction Methods 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 238000001953 recrystallisation Methods 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- 238000005809 transesterification reaction Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- OJURWUUOVGOHJZ-UHFFFAOYSA-N methyl 2-[(2-acetyloxyphenyl)methyl-[2-[(2-acetyloxyphenyl)methyl-(2-methoxy-2-oxoethyl)amino]ethyl]amino]acetate Chemical compound C=1C=CC=C(OC(C)=O)C=1CN(CC(=O)OC)CCN(CC(=O)OC)CC1=CC=CC=C1OC(C)=O OJURWUUOVGOHJZ-UHFFFAOYSA-N 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000000967 suction filtration Methods 0.000 description 1
- 238000010626 work up procedure Methods 0.000 description 1
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
- C07C67/62—Use of additives, e.g. for stabilisation
-
- 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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEV9752A DE1004162B (de) | 1955-11-18 | 1955-11-18 | Verfahren zum Reinigen von Dimethylterephthalat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH346535A true CH346535A (de) | 1960-05-31 |
Family
ID=7572808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH346535D CH346535A (de) | 1955-11-18 | 1956-09-27 | Verfahren zum Reinigen von Dimethylterephthalat |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE551364A (fr) |
| CH (1) | CH346535A (fr) |
| DE (1) | DE1004162B (fr) |
| FR (1) | FR1163410A (fr) |
| GB (1) | GB802067A (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3468763A (en) * | 1966-06-21 | 1969-09-23 | Halcon International Inc | Purification of terephthalonitrile by azeotropic distillation with ethylene glycol |
-
1955
- 1955-11-18 DE DEV9752A patent/DE1004162B/de active Pending
-
1956
- 1956-09-27 CH CH346535D patent/CH346535A/de unknown
- 1956-09-28 BE BE551364A patent/BE551364A/fr unknown
- 1956-10-08 FR FR1163410A patent/FR1163410A/fr not_active Expired
- 1956-10-25 GB GB32597/56A patent/GB802067A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE551364A (fr) | 1959-12-18 |
| FR1163410A (fr) | 1958-09-25 |
| DE1004162B (de) | 1957-03-14 |
| GB802067A (en) | 1958-09-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0423658B1 (fr) | Procédé d'isolement de l'acétate de vinyl | |
| EP0040724A1 (fr) | Procédé de préparation continue d'esters d'acide acétique | |
| DE2244229B2 (de) | Verfahren zur Gewinnung von Äthylenglycol oder Propylenglycol | |
| DE3422575C2 (fr) | ||
| DE2323328A1 (de) | Verfahren zur abtrennung von acrylsaeure aus waessrigen loesungen | |
| DE2135530A1 (de) | Verfahren zur Gewinnung von tertiärem Butylhydroperoxid | |
| DE1255103B (de) | Verfahren zur kontinuierlichen Gewinnung von Acrylsaeurenitril und Acetonitril aus deren waessrigen Loesungen | |
| DE3038962C2 (fr) | ||
| DE1004162B (de) | Verfahren zum Reinigen von Dimethylterephthalat | |
| DE1293391B (de) | Verfahren zur Rueckgewinnung von Dimethylformamid aus Koagulations- und Streckbaendern | |
| DE548739C (de) | Gewinnung von Cyanwasserstoff aus cyanwasserstoffhaltigen Gasen | |
| DE2305021A1 (de) | Verfahren zur isolation von alkylvinylaether | |
| DE3447615C2 (fr) | ||
| DE857802C (de) | Verfahren zum Reinigen von Trimethylolpropan | |
| DE2262969A1 (de) | Verfahren zur abtrennung von acrylsaeurealkylestern aus acrylsaeure enthaltenden gemischen | |
| DE837997C (de) | Verfahren zur Herstellung von AEthergruppen enthaltenden organischen Verbindungen | |
| DE2128942B2 (de) | Verfahren zum reinigen hochsiedender dicarbonsaeurediester | |
| DE956680C (de) | Verfahren zur Reinigung von Terephthalsaeure | |
| AT205494B (de) | Verfahren zur Gewinnung von Dimethylterephthalat außerordentlich hoher Reinheit | |
| DE1031779B (de) | Verfahren zur Reinigung von Tetrachlorphthalsaeure oder deren Anhydrid | |
| DE1768078C3 (de) | Verfahren zur Herstellung ungesättigter Ester von Carbonsäuren | |
| DE1215130B (de) | Verfahren zur Herstellung von Formamid | |
| AT235258B (de) | Verfahren zur kontinuierlichen Veresterung von organischen Säuren | |
| DE2657235A1 (de) | Verfahren zur gewinnung niederer alkylamide aus ihren waessrigen loesungen | |
| AT302340B (de) | Verfahren zur Herstellung von 1,2-Di-N-morpholinoäthan |