RO80465B - Process for preparing some concentrated formaldehyde solutions - Google Patents
Process for preparing some concentrated formaldehyde solutionsInfo
- Publication number
- RO80465B RO80465B RO101896A RO10189680A RO80465B RO 80465 B RO80465 B RO 80465B RO 101896 A RO101896 A RO 101896A RO 10189680 A RO10189680 A RO 10189680A RO 80465 B RO80465 B RO 80465B
- Authority
- RO
- Romania
- Prior art keywords
- column
- pressure
- preparing
- formaldehyde solutions
- concentrated formaldehyde
- Prior art date
Links
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title abstract 6
- 238000004519 manufacturing process Methods 0.000 title 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- AWBIJARKDOFDAN-UHFFFAOYSA-N 2,5-dimethyl-1,4-dioxane Chemical compound CC1COC(C)CO1 AWBIJARKDOFDAN-UHFFFAOYSA-N 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000009835 boiling Methods 0.000 abstract 1
- 239000006227 byproduct Substances 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 239000012141 concentrate Substances 0.000 abstract 1
- 235000019253 formic acid Nutrition 0.000 abstract 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 abstract 1
- 229910052753 mercury Inorganic materials 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000003960 organic solvent Substances 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 230000000087 stabilizing effect Effects 0.000 abstract 1
- 238000003786 synthesis 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)
Abstract
Procedeu de preparare a unor solutii concentrare de formaldehida, în care rectificarea se face la diferenta de presiune în partea superioara a coloanei de 3...100 mm coloana de mercur la o presiune de 20...30 mm Hg, presiunea la partea inferioara a coloanei fiind de 0,8....2,5 at si diferente de presiune la partea inferioara a coloanei fiind de 0,5...2,4 at, cu alimentare, în partea centrala, respectiv inferioara, a coloanei, a unui adaos cu actiune stabilizanta - acid formic si un solvent organic care nu formeaza cu apa un amestec azeotrop, reprezentat de un compus cu continuturi de hidroxil, cel putin doua grupe hidroxil, respectiv un amestec de produse secundare cu punct de fierbere pe înalt de la sinteza de dimetildioxan.Process for the preparation of formaldehyde concentrate solutions, wherein the rectification is done at the pressure difference at the top of the column of 3 ... 100 mm of the mercury column at a pressure of 20 ... 30 mm Hg, the pressure at the bottom of the column being 0.8 ... 2.5 at and pressure differences at the bottom of the column being 0.5 ... 2.4 at, with feed, in the central or lower part of the column, of an addition with stabilizing action - formic acid and an organic solvent which does not form with water an azeotrope mixture, represented by a compound having hydroxyl contents, at least two hydroxyl groups, respectively a mixture of byproducts with a high boiling point to the synthesis of dimethyldioxane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO101896A RO80465B (en) | 1980-08-05 | 1980-08-05 | Process for preparing some concentrated formaldehyde solutions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO101896A RO80465B (en) | 1980-08-05 | 1980-08-05 | Process for preparing some concentrated formaldehyde solutions |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RO80465A RO80465A (en) | 1983-02-15 |
| RO80465B true RO80465B (en) | 1983-02-28 |
Family
ID=20108861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO101896A RO80465B (en) | 1980-08-05 | 1980-08-05 | Process for preparing some concentrated formaldehyde solutions |
Country Status (1)
| Country | Link |
|---|---|
| RO (1) | RO80465B (en) |
-
1980
- 1980-08-05 RO RO101896A patent/RO80465B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| RO80465A (en) | 1983-02-15 |
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