GB1252698A - - Google Patents
Info
- Publication number
- GB1252698A GB1252698A GB1252698DA GB1252698A GB 1252698 A GB1252698 A GB 1252698A GB 1252698D A GB1252698D A GB 1252698DA GB 1252698 A GB1252698 A GB 1252698A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aliphatic
- catalyst
- acid
- weight
- water
- 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
- 239000003054 catalyst Substances 0.000 abstract 4
- 238000004821 distillation Methods 0.000 abstract 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 4
- 239000002253 acid Substances 0.000 abstract 3
- 125000001931 aliphatic group Chemical group 0.000 abstract 3
- 239000000203 mixture Substances 0.000 abstract 3
- 150000007933 aliphatic carboxylic acids Chemical class 0.000 abstract 2
- -1 aliphatic olefin Chemical class 0.000 abstract 2
- KQNPFQTWMSNSAP-UHFFFAOYSA-N isobutyric acid Chemical compound CC(C)C(O)=O KQNPFQTWMSNSAP-UHFFFAOYSA-N 0.000 abstract 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 abstract 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 abstract 1
- 235000011149 sulphuric acid Nutrition 0.000 abstract 1
- 239000001117 sulphuric acid Substances 0.000 abstract 1
- 238000003786 synthesis reaction Methods 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/10—Preparation of carboxylic acids or their salts, halides or anhydrides by reaction with carbon monoxide
- C07C51/14—Preparation of carboxylic acids or their salts, halides or anhydrides by reaction with carbon monoxide on a carbon-to-carbon unsaturated bond in organic compounds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
- C07C51/44—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/584—Recycling of catalysts
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Crystallography & Structural Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1,252,698. Preparation of aliphatic acids. AMERICAN CYANAMID CO. 24 Dec., 1969 [18 Feb., 1969 (2)], No. 62843/69. Heading C2C. C 4-9 aliphatic carboxylic acids are prepared and recovered by (a) reacting CO with a C 3-8 aliphatic olefin in the presence of concentrated H 2 SO 4 as catalyst, (b) adding water to the product mixture from step (a), (c) distilling aliphatic acid and water from the product mixture of step (b) at a pressure less than 300 mm. Hg and temperature less than 200 C. until substantially all the aliphatic acid product is distilled over and water constitutes less than 20 % by weight of the distillation residue, and (d) repeating the steps (a), (b) and (c) using the distillation residue from step (c) as catalyst in step (a). The distillation step may be performed in the presence of steam, added for heating and stripping. In a modification of the process the catalyst of step (a) preferably comprises 15- 90% by weight of a mixture of hydroxyalkanesulphonic acid and its sulphuric acid ester, 0- 75% by weight H 2 SO 4 and less than 20% by weight of water, which catalyst is the distillation residue from step (c) of an earlier aliphatic carboxylic acid synthesis. In the examples propylene is converted to isobutyric acid.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US80025069A | 1969-02-18 | 1969-02-18 | |
| US80028969A | 1969-02-18 | 1969-02-18 | |
| ZA712199A ZA712199B (en) | 1970-04-09 | 1971-04-07 | New propionic acid and processes for its manufacture |
| FR7114809A FR2135729A5 (en) | 1969-02-18 | 1971-04-26 | Lower aliphatic acids - prepd and separated by a process allowing recycling of catalyst |
| BE766340A BE766340A (en) | 1969-02-18 | 1971-04-27 | PERFECTED PROCESS FOR THE SYNTHESIS AND ISOLATION OF LOWER ALIPHATIC ACIDS. |
| NL7105799A NL7105799A (en) | 1969-02-18 | 1971-04-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1252698A true GB1252698A (en) | 1971-11-10 |
Family
ID=27543129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1252698D Expired GB1252698A (en) | 1969-02-18 | 1969-12-24 |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1252698A (en) |
-
1969
- 1969-12-24 GB GB1252698D patent/GB1252698A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3458561A (en) | Esterification of acrylic acid | |
| US3088969A (en) | Manufacture of t-butyl esters of unsaturated acids | |
| GB903613A (en) | Improvements in or relating to the production of acetoacetic acid esters | |
| GB1252698A (en) | ||
| GB1174209A (en) | Process for the preparation of mono-carboxylic acids | |
| GB1173089A (en) | Production of Esters | |
| ES396478A1 (en) | Gel-forming monoglycerides of cyclic carboxylic acids | |
| US3358014A (en) | Purification of furfuryl alcoholderived levulinic esters | |
| GB1057528A (en) | Process for the manufacture of cyanoacetic acid esters | |
| DE3461367D1 (en) | Process for the separation of a mixture of c4 hydrocarbons mainly comprising n-butenes and butanes | |
| GB1256288A (en) | Process for recovering methyl methacrylate | |
| GB1223028A (en) | Preparation of carboxylic acids and/or esters | |
| JPS5265222A (en) | Preparation of phosphoric acid ester having perfluoroalkyl group | |
| GB1250204A (en) | ||
| GB1211443A (en) | Production of acrylic acid from residues obtained in working up acrylic acid | |
| GB1302146A (en) | ||
| GB1003007A (en) | Improvements in or relating to the production of ethyl acrylate | |
| US2617821A (en) | Method for preparing formic esters | |
| SU499798A4 (en) | The method of obtaining -formyloxyalkanal | |
| JPS53105471A (en) | Preparation of cyclic ethers | |
| GB1216926A (en) | Process for purifying high boiling esters | |
| GB1405303A (en) | Polyester preparation | |
| ES483368A1 (en) | Process for the preparation of glycidyl esters of fumaric acid. | |
| GB1337840A (en) | Production of lower carboxylic acids | |
| ES409540A3 (en) | A procedure for the preparation of dialcohilic esters of tereftal acid. (Machine-translation by Google Translate, not legally binding) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |