GB953763A - Improvements in and relating to the production of unsaturated aliphatic acids - Google Patents
Improvements in and relating to the production of unsaturated aliphatic acidsInfo
- Publication number
- GB953763A GB953763A GB448162A GB448162A GB953763A GB 953763 A GB953763 A GB 953763A GB 448162 A GB448162 A GB 448162A GB 448162 A GB448162 A GB 448162A GB 953763 A GB953763 A GB 953763A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acrylic acid
- contact
- acrolein
- relating
- production
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
- C07C51/21—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen
- C07C51/25—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of unsaturated compounds containing no six-membered aromatic ring
- C07C51/252—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of unsaturated compounds containing no six-membered aromatic ring of propene, butenes, acrolein or methacrolein
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
In a process for the preparation of acrylic acid by reacting at an elevated temperature in the vapour phase, acrolein or a compound which gives rise to acrolein under the reaction conditions, and oxygen in the presence of an oxidation catalyst, the gaseous reaction mixture leaving the reactor at below 100 DEG C. is quenched by contact with cooled liquid acrylic acid to reduce the undesirable polymerization of the acrylic acid manomer. The contact with the acrylic acid which may be pure or in an aqueons solution may be by counter-or co-current flow through a packed zone wherein the reaction gases are condensed and absorbed in the quenching liquid. The quenching liquid may contain polymerization inhibitors e.g. hydroquinone or methylene blue. Acrylic acid may be finally recovered by esterification, salt formation or solvent extraction followed by fractional distillation.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB448162A GB953763A (en) | 1962-02-06 | 1962-02-06 | Improvements in and relating to the production of unsaturated aliphatic acids |
| DE19631443695 DE1443695A1 (en) | 1962-02-06 | 1963-01-23 | Process for the production of acrylic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB448162A GB953763A (en) | 1962-02-06 | 1962-02-06 | Improvements in and relating to the production of unsaturated aliphatic acids |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB953763A true GB953763A (en) | 1964-04-02 |
Family
ID=9777994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB448162A Expired GB953763A (en) | 1962-02-06 | 1962-02-06 | Improvements in and relating to the production of unsaturated aliphatic acids |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1443695A1 (en) |
| GB (1) | GB953763A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8367860B2 (en) * | 2004-04-01 | 2013-02-05 | Mitsubishi Chemical Corporation | Method for producing (meth) acrylic acid derivitive |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6059891B2 (en) * | 1977-09-28 | 1985-12-27 | 住友化学工業株式会社 | Method for separating methacrolein and methacrylic acid |
-
1962
- 1962-02-06 GB GB448162A patent/GB953763A/en not_active Expired
-
1963
- 1963-01-23 DE DE19631443695 patent/DE1443695A1/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8367860B2 (en) * | 2004-04-01 | 2013-02-05 | Mitsubishi Chemical Corporation | Method for producing (meth) acrylic acid derivitive |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1443695A1 (en) | 1969-01-23 |
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