RO87729B1 - Process for obtaining dialyl maleate - Google Patents
Process for obtaining dialyl maleateInfo
- Publication number
- RO87729B1 RO87729B1 RO111548A RO11154883A RO87729B1 RO 87729 B1 RO87729 B1 RO 87729B1 RO 111548 A RO111548 A RO 111548A RO 11154883 A RO11154883 A RO 11154883A RO 87729 B1 RO87729 B1 RO 87729B1
- Authority
- RO
- Romania
- Prior art keywords
- reaction
- obtaining
- tert
- proportion
- maleic anhydride
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 2
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 title 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 title 1
- 238000006243 chemical reaction Methods 0.000 abstract 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract 2
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 abstract 2
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 abstract 2
- WJFKNYWRSNBZNX-UHFFFAOYSA-N 10H-phenothiazine Chemical compound C1=CC=C2NC3=CC=CC=C3SC2=C1 WJFKNYWRSNBZNX-UHFFFAOYSA-N 0.000 abstract 1
- DKCPKDPYUFEZCP-UHFFFAOYSA-N 2,6-di-tert-butylphenol Chemical compound CC(C)(C)C1=CC=CC(C(C)(C)C)=C1O DKCPKDPYUFEZCP-UHFFFAOYSA-N 0.000 abstract 1
- HXIQYSLFEXIOAV-UHFFFAOYSA-N 2-tert-butyl-4-(5-tert-butyl-4-hydroxy-2-methylphenyl)sulfanyl-5-methylphenol Chemical compound CC1=CC(O)=C(C(C)(C)C)C=C1SC1=CC(C(C)(C)C)=C(O)C=C1C HXIQYSLFEXIOAV-UHFFFAOYSA-N 0.000 abstract 1
- 239000003377 acid catalyst Substances 0.000 abstract 1
- ZPOLOEWJWXZUSP-WAYWQWQTSA-N bis(prop-2-enyl) (z)-but-2-enedioate Chemical compound C=CCOC(=O)\C=C/C(=O)OCC=C ZPOLOEWJWXZUSP-WAYWQWQTSA-N 0.000 abstract 1
- 230000032050 esterification Effects 0.000 abstract 1
- 238000005886 esterification reaction Methods 0.000 abstract 1
- 235000019441 ethanol Nutrition 0.000 abstract 1
- 239000003112 inhibitor Substances 0.000 abstract 1
- 239000003960 organic solvent Substances 0.000 abstract 1
- 229950000688 phenothiazine Drugs 0.000 abstract 1
- 238000006116 polymerization reaction Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
Inventia se refera la un procedeu de obtinere a dialilmaleatului prin reactia de esterificare a anhidridei maleice cu alcool etilic în raport molar de 1:2,2-2,4 în prezenta unui catalizator acid folosit în proportie de 0,1...5% într-un solvent organic inert care formeaza un amestec azeotrop cu apa rezultata în reactie, conform caruia la începutul reactiei se adauga un inhibitor de polimerizare în proportie de 0,01...5%, de preferinta 0,05...0,2% fata de anhidrida maleica ales dintre hidrochinona, fenotiazina, 2,6-di-tert-butil-fenol, 4,4'-tio-bis-(6-tert-butil-m-crezol).The invention relates to a process for the preparation of diallyl maleate by the reaction of esterification of maleic anhydride with ethyl alcohol in a molar ratio of 1: 2.2-2.4 in the presence of an acid catalyst used in a proportion of 0.1 ... 5% in an inert organic solvent which forms an azeotrope with the reaction water, according to which at the beginning of the reaction is added a polymerization inhibitor in the proportion of 0.01 ... 5%, preferably 0.05 ... 0, 2% to maleic anhydride chosen from hydroquinone, phenothiazine, 2,6-di-tert-butylphenol, 4,4'-thio-bis- (6-tert-butyl-m-cresol).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO111548A RO87729B1 (en) | 1983-07-07 | 1983-07-07 | Process for obtaining dialyl maleate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO111548A RO87729B1 (en) | 1983-07-07 | 1983-07-07 | Process for obtaining dialyl maleate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RO87729A2 RO87729A2 (en) | 1985-12-30 |
| RO87729B1 true RO87729B1 (en) | 1985-12-31 |
Family
ID=20113365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO111548A RO87729B1 (en) | 1983-07-07 | 1983-07-07 | Process for obtaining dialyl maleate |
Country Status (1)
| Country | Link |
|---|---|
| RO (1) | RO87729B1 (en) |
-
1983
- 1983-07-07 RO RO111548A patent/RO87729B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| RO87729A2 (en) | 1985-12-30 |
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