RO81165B1 - PROCEDEU PENTRU INHIBAREA POLIMERIZARII COMPUSILOR VINILAROMATICI îN PROCESUL DE SEPARARE - Google Patents
PROCEDEU PENTRU INHIBAREA POLIMERIZARII COMPUSILOR VINILAROMATICI îN PROCESUL DE SEPARAREInfo
- Publication number
- RO81165B1 RO81165B1 RO102357A RO10235780A RO81165B1 RO 81165 B1 RO81165 B1 RO 81165B1 RO 102357 A RO102357 A RO 102357A RO 10235780 A RO10235780 A RO 10235780A RO 81165 B1 RO81165 B1 RO 81165B1
- Authority
- RO
- Romania
- Prior art keywords
- solution
- inhibitor
- phase
- ratio
- weight
- Prior art date
Links
- 238000000926 separation method Methods 0.000 title abstract 4
- 150000001875 compounds Chemical class 0.000 title abstract 2
- 230000002401 inhibitory effect Effects 0.000 title abstract 2
- 238000000034 method Methods 0.000 title abstract 2
- 238000006116 polymerization reaction Methods 0.000 title abstract 2
- 239000003112 inhibitor Substances 0.000 abstract 4
- 239000000243 solution Substances 0.000 abstract 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 3
- UFBJCMHMOXMLKC-UHFFFAOYSA-N 2,4-dinitrophenol Chemical compound OC1=CC=C([N+]([O-])=O)C=C1[N+]([O-])=O UFBJCMHMOXMLKC-UHFFFAOYSA-N 0.000 abstract 2
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 abstract 2
- 239000012670 alkaline solution Substances 0.000 abstract 2
- 238000000605 extraction Methods 0.000 abstract 2
- 239000012071 phase Substances 0.000 abstract 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 abstract 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 235000011114 ammonium hydroxide Nutrition 0.000 abstract 1
- 239000008346 aqueous phase Substances 0.000 abstract 1
- 239000003849 aromatic solvent Substances 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000012141 concentrate Substances 0.000 abstract 1
- YTJDQWRMZBASDO-UHFFFAOYSA-N ethenyl bromate Chemical compound Br(=O)(=O)OC=C YTJDQWRMZBASDO-UHFFFAOYSA-N 0.000 abstract 1
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 1
- 239000011707 mineral Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000012074 organic phase Substances 0.000 abstract 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-M phenolate Chemical compound [O-]C1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-M 0.000 abstract 1
- 229940031826 phenolate Drugs 0.000 abstract 1
- 239000011347 resin Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 abstract 1
- -1 vinyl compound Chemical class 0.000 abstract 1
- 229920002554 vinyl polymer Polymers 0.000 abstract 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Inventia se refera la un procedeu pentru inhibarea polimerizarii compusilor cinilaromatici în procesul de separare, conform caruia, în fluxul de alimentare a coloanei de separare se introduce solutia de inhibitor pe baza de dinitrofenol, într-un solvent aromatic, în proportie de 1:10...1:100 solutie inhibitor/parti în greutate concentrat vinilaromatic, astfel încît concentratia dinitrofenolului în amestec sa fie 100...1000 ppm, raportat la compusul vinilic, inhibitorul regasindu-se în reziduul coloanei de separare, de unde se extrage cu o solutie alcalina continînd 1,5...2% g NaOH, KOH sau NH4OH prin contactare la temperatura de 70...100 degree C, la un raport în greutate solutie alcalina: rasina vinilaromatica de 1:1...1,5 de preferinta 1:2, se aciduleaza cu un acid mineral aducîndu-se la pH=1...2, concomitent cu contactarea solutiei de fenolat cu o faza organica alcatuita, de preferinta din vinilaromatul brut supus distilarii, raportul în greutate faza de fenolat: faza organica fiind de 1:1...1:5, de preferinta 1:2, la temperatura de 40...80 degree C, avînd loc extractia cantitativa a inhibitorului din faza apoasa cu formarea unei solutii de 1...2% greutate dinitrofenol, care dupa extractie se reintroduce în fluxul de alimentare.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO80102357A RO81165A2 (ro) | 1980-10-14 | 1980-10-14 | Procedeu pentru inhibarea polimerizarii compusilor vinilaromatici in procesul de separare |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO80102357A RO81165A2 (ro) | 1980-10-14 | 1980-10-14 | Procedeu pentru inhibarea polimerizarii compusilor vinilaromatici in procesul de separare |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RO81165B1 true RO81165B1 (ro) | 1983-01-30 |
| RO81165A2 RO81165A2 (ro) | 1983-02-01 |
Family
ID=20109060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO80102357A RO81165A2 (ro) | 1980-10-14 | 1980-10-14 | Procedeu pentru inhibarea polimerizarii compusilor vinilaromatici in procesul de separare |
Country Status (1)
| Country | Link |
|---|---|
| RO (1) | RO81165A2 (ro) |
-
1980
- 1980-10-14 RO RO80102357A patent/RO81165A2/ro unknown
Also Published As
| Publication number | Publication date |
|---|---|
| RO81165A2 (ro) | 1983-02-01 |
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