TW340111B - Improved process for preparing unsaturated carboxylic acid esters and novel apparatus for preparing the same - Google Patents
Improved process for preparing unsaturated carboxylic acid esters and novel apparatus for preparing the sameInfo
- Publication number
- TW340111B TW340111B TW083110767A TW83110767A TW340111B TW 340111 B TW340111 B TW 340111B TW 083110767 A TW083110767 A TW 083110767A TW 83110767 A TW83110767 A TW 83110767A TW 340111 B TW340111 B TW 340111B
- Authority
- TW
- Taiwan
- Prior art keywords
- reactor
- alcohol
- carboxylic acid
- water
- unsaturated carboxylic
- Prior art date
Links
- 150000001733 carboxylic acid esters Chemical class 0.000 title abstract 2
- 238000004519 manufacturing process Methods 0.000 title 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 4
- 239000003054 catalyst Substances 0.000 abstract 3
- 238000000034 method Methods 0.000 abstract 2
- 239000012044 organic layer Substances 0.000 abstract 2
- 239000000376 reactant Substances 0.000 abstract 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 abstract 1
- 125000001931 aliphatic group Chemical group 0.000 abstract 1
- 238000009835 boiling Methods 0.000 abstract 1
- 125000004432 carbon atom Chemical group C* 0.000 abstract 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 abstract 1
- 239000003729 cation exchange resin Substances 0.000 abstract 1
- 238000000605 extraction Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 238000004064 recycling Methods 0.000 abstract 1
- 230000008016 vaporization Effects 0.000 abstract 1
Landscapes
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
A sort of method for preparaing unsaturated carboxylic acid esters by esterifying an (aliphatic) alcohol having 4 to 8 carbon atoms with an unsaturated carboxylic acid in the presence of a cation exchange resin catalyst, characterized in that the process is conducted by continuously circulating said reactants in contact with said catalyst from the top to the bottom through a reactor which is composed in the form of a fixed bed divided into 1 to 10 steps wherein each step comprizes a catalyst bed, a filter and an air inlet, and has a thermal insulating outer wall, supplying a vaporizing heat for extraction of water, which is produced during the reaction, through a heat exchanger outside the reactor, circulating the reactants between the reactor and the heat exchanger by means of a circulating pump, contacting an azeotropic mixture of water vaporized by the heat exchanger and an alcohol with an alcohol circulating in a column tower or a raw alcohol supplied from a alcohol inlet located on the top of the column tower to recycle the high boiling component into the reactor and, at the same time, to transfer the light component to the upper part of the column in which the light component is condensed, separating the condensate into an organic layer and water in a decantor, and then recycling the organic layer into the reactor and removing the water produced during the reaction.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP94118435A EP0713857B1 (en) | 1994-11-21 | 1994-11-23 | Improved process for preparing unsaturated carboxylic acid esters and novel apparatus for preparing the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TW340111B true TW340111B (en) | 1998-09-11 |
Family
ID=58263389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW083110767A TW340111B (en) | 1994-11-23 | 1994-11-19 | Improved process for preparing unsaturated carboxylic acid esters and novel apparatus for preparing the same |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TW340111B (en) |
-
1994
- 1994-11-19 TW TW083110767A patent/TW340111B/en not_active IP Right Cessation
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MK4A | Expiration of patent term of an invention patent |