PL130199B1 - Method of recovery of methyl p-toluate and dimethylterephtalate from residues after distillation of raw esters - Google Patents
Method of recovery of methyl p-toluate and dimethylterephtalate from residues after distillation of raw estersInfo
- Publication number
- PL130199B1 PL130199B1 PL22578680A PL22578680A PL130199B1 PL 130199 B1 PL130199 B1 PL 130199B1 PL 22578680 A PL22578680 A PL 22578680A PL 22578680 A PL22578680 A PL 22578680A PL 130199 B1 PL130199 B1 PL 130199B1
- Authority
- PL
- Poland
- Prior art keywords
- distillation
- methyl
- toluate
- residues
- dimethyl terephthalate
- 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 7
- 238000004821 distillation Methods 0.000 title claims 6
- 150000002148 esters Chemical class 0.000 title claims 3
- 238000000034 method Methods 0.000 title claims 3
- QSSJZLPUHJDYKF-UHFFFAOYSA-N methyl 4-methylbenzoate Chemical compound COC(=O)C1=CC=C(C)C=C1 QSSJZLPUHJDYKF-UHFFFAOYSA-N 0.000 title claims 2
- 238000011084 recovery Methods 0.000 title 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims 6
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims 3
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims 1
- 239000002253 acid Substances 0.000 claims 1
- 125000001931 aliphatic group Chemical group 0.000 claims 1
- 238000000137 annealing Methods 0.000 claims 1
- 239000007864 aqueous solution Substances 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
- 239000003054 catalyst Substances 0.000 claims 1
- 235000019253 formic acid Nutrition 0.000 claims 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 239000001301 oxygen Substances 0.000 claims 1
- 238000010992 reflux Methods 0.000 claims 1
- 238000005292 vacuum distillation Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Claims (1)
1. Zastrzezenie patentowe Sposób odzyskiwania p-tolullanu metylu i dwumetylotereftalanu z pozostalosci po desty¬ lacji surowych estrów z procesu wytwarzania dwumetylotereftalanu, poddawanej uprzednio utlenianiu tlenem z powietrza lub estryfikacjl metanolem lub obydwu procesom w znany spo¬ sób i po usunieciu co najmniej 60% wagowych skladników katalizatora, znamienny t y m, ze pozostalosc podestylacyjna z destylacji surowych estrów poddawana Jest wygrzewa¬ niu z wodnymi roztworami kwasów alifatycznych takich Jak kwas octowy, kwas mrówkowy lub ich mieszanina o liczbie kwasowej 30-110 mg KOH na 1 gf zawierajacymi 0,5-10% wagowych me¬ tanolu w temperaturze 95-240°C w ciagu 5-30 godzin i po calkowitym odpedzie wody pozosta- x losc poddawana Jest destylacji prózniowej przy prózni 20-270 hPa I przy stosowaniu calko¬ witego orosienia w pierwszej fazie destylacji przez okres 1-3 godzin, a w nastepnych fazach " destylacji odbiera sie frakcje p-toluilanu metylu i dwumetylotereftalanu. PL
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL22578680A PL130199B1 (en) | 1980-07-18 | 1980-07-18 | Method of recovery of methyl p-toluate and dimethylterephtalate from residues after distillation of raw esters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL22578680A PL130199B1 (en) | 1980-07-18 | 1980-07-18 | Method of recovery of methyl p-toluate and dimethylterephtalate from residues after distillation of raw esters |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| PL225786A1 PL225786A1 (pl) | 1982-02-01 |
| PL130199B1 true PL130199B1 (en) | 1984-07-31 |
Family
ID=20004323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL22578680A PL130199B1 (en) | 1980-07-18 | 1980-07-18 | Method of recovery of methyl p-toluate and dimethylterephtalate from residues after distillation of raw esters |
Country Status (1)
| Country | Link |
|---|---|
| PL (1) | PL130199B1 (pl) |
-
1980
- 1980-07-18 PL PL22578680A patent/PL130199B1/pl unknown
Also Published As
| Publication number | Publication date |
|---|---|
| PL225786A1 (pl) | 1982-02-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0808815B1 (de) | Verfahren zur Herstellung von Trimethylhydrochinon | |
| CA2114838C (en) | A process for making morphine-6-glucuronide or substituted morphine-6-glucuronide | |
| DE68906525D1 (de) | Verfahren zur herstellung von estern der beta-hydroxybuttersaeure. | |
| ATE67484T1 (de) | Prostaglandinanaloge, verfahren zu ihrer herstellung und ihre pharmazeutischen zusammenstellungen. | |
| EP0273388A3 (en) | Sialic acid derivatives having active carbonyl group | |
| DE69629942T2 (de) | Herstellungsverfahren | |
| PL130199B1 (en) | Method of recovery of methyl p-toluate and dimethylterephtalate from residues after distillation of raw esters | |
| US20070049764A1 (en) | Synthetic method of glycol diesters from reaction of glycol monoesters and linear aliphatic carboxylic acids | |
| EP0349059A3 (en) | Process for the synthesis of polyol fatty acid polyesters | |
| EP0041235B1 (en) | Alpha,beta-dihydropolyprenyl derivatives for treating liver diseases | |
| US2205627A (en) | Esters of unsaturated polyhydroxy estrane | |
| Nelson et al. | Castor-based derivatives: synthesis of some acrylate esters | |
| JP2511407B2 (ja) | 高度不飽和高級脂肪酸のモノグリセリドの製法 | |
| ATE39487T1 (de) | Ml-236b-derivate, verfahren zu ihrer herstellung und diese enthaltende pharmazeutische zusammensetzungen. | |
| JPS57130954A (en) | Esterification | |
| JPS56120642A (en) | Preparation of aryl ester of aromatic oxycarboxylic acid | |
| SU621313A3 (ru) | Способ выделени дикарбоксилата пропиленгликол | |
| RU96112171A (ru) | Способ получения стероидных эфиров | |
| JPS56127780A (en) | Production of oxo fatty acid ester | |
| SU386939A1 (ru) | Способ получения этилового эфира 1-метилпиперидин-з-карбоновой кислоты | |
| US2750425A (en) | 1, 2, 3, 4, 4a, 9, 10, 10a-octahydro-7, 9-dihydroxy-1-hydroxymethyl-1, 4a, -dimethylphenanthrene and process | |
| KR850007056A (ko) | 테레프탈산디메틸 에스테르를 경유하여 p-키실올과 메타놀로부터 테레프탈산의 제조방법 | |
| DE1218440B (de) | Verfahren zur Herstellung alpha, beta-ungesaettigter gamma-Laktone | |
| GB2212493A (en) | Production of di- or tri- esters | |
| JPS57105193A (en) | Separation of long-chain dicarboxylic ester from fermented broth |