IT1140223B - Isobutyric anhydride prodn. from propylene - Google Patents
Isobutyric anhydride prodn. from propyleneInfo
- Publication number
- IT1140223B IT1140223B IT24499/81A IT2449981A IT1140223B IT 1140223 B IT1140223 B IT 1140223B IT 24499/81 A IT24499/81 A IT 24499/81A IT 2449981 A IT2449981 A IT 2449981A IT 1140223 B IT1140223 B IT 1140223B
- Authority
- IT
- Italy
- Prior art keywords
- recycle
- iii
- prodn
- propylene
- liq
- Prior art date
Links
- LSACYLWPPQLVSM-UHFFFAOYSA-N isobutyric acid anhydride Chemical compound CC(C)C(=O)OC(=O)C(C)C LSACYLWPPQLVSM-UHFFFAOYSA-N 0.000 title abstract 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 title abstract 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 title abstract 2
- FSQOYWQCIXSBNP-UHFFFAOYSA-N 2-methylpropanoyl fluoride Chemical compound CC(C)C(F)=O FSQOYWQCIXSBNP-UHFFFAOYSA-N 0.000 abstract 6
- 239000012071 phase Substances 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 230000003301 hydrolyzing effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000007790 solid phase Substances 0.000 abstract 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Prodn of isobutyric anhydride (I) is carried out by (a) carbonylating propylene in the presence of excess anhydrous liq HF; (b) fractionating the reaction mixt to separate isobutyryl fluoride (II) and recover unreacted HF for recycle; (c) hydrolysing (II) at 0-100 deg C in the presence of an HF acceptor (III) and 0.05-0.5 mole of water per mole of (II), the water being completely consumed in the reaction to form an equilibrium reaction mixt including a liq phase comprising (I) and (II) and a solid phase comprising an HF/(III)complex; and (d) fractionating the liq phase to give a prod fraction comprising (I) and an overhead fraction comprising (II) for recycle to step (c). The process avoids problems associated with the sepn of (I) from HF; recycle HF can be recovered from the HF/(III) complex.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT24499/81A IT1140223B (en) | 1981-10-14 | 1981-10-14 | Isobutyric anhydride prodn. from propylene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT24499/81A IT1140223B (en) | 1981-10-14 | 1981-10-14 | Isobutyric anhydride prodn. from propylene |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IT8124499A0 IT8124499A0 (en) | 1981-10-14 |
| IT1140223B true IT1140223B (en) | 1986-09-24 |
Family
ID=11213760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT24499/81A IT1140223B (en) | 1981-10-14 | 1981-10-14 | Isobutyric anhydride prodn. from propylene |
Country Status (1)
| Country | Link |
|---|---|
| IT (1) | IT1140223B (en) |
-
1981
- 1981-10-14 IT IT24499/81A patent/IT1140223B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| IT8124499A0 (en) | 1981-10-14 |
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