GB1227887A - - Google Patents
Info
- Publication number
- GB1227887A GB1227887A GB1227887DA GB1227887A GB 1227887 A GB1227887 A GB 1227887A GB 1227887D A GB1227887D A GB 1227887DA GB 1227887 A GB1227887 A GB 1227887A
- Authority
- GB
- United Kingdom
- Prior art keywords
- anhydride
- stage
- recycled
- acid
- condenser
- 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
- 150000008064 anhydrides Chemical class 0.000 abstract 7
- 239000002253 acid Substances 0.000 abstract 4
- 238000000034 method Methods 0.000 abstract 3
- 239000012535 impurity Substances 0.000 abstract 2
- 239000010409 thin film Substances 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 abstract 1
- 150000007513 acids Chemical class 0.000 abstract 1
- 230000005494 condensation Effects 0.000 abstract 1
- 238000009833 condensation Methods 0.000 abstract 1
- 238000010924 continuous production Methods 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 230000018044 dehydration Effects 0.000 abstract 1
- 238000006297 dehydration reaction Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 230000008020 evaporation Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 abstract 1
- 239000011976 maleic acid Substances 0.000 abstract 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 150000003022 phthalic acids Chemical class 0.000 abstract 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 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
- C07C51/54—Preparation of carboxylic acid anhydrides
- C07C51/56—Preparation of carboxylic acid anhydrides from organic acids, their salts, their esters or their halides, e.g. by carboxylation
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)
- Physical Or Chemical Processes And Apparatus (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1750967A CH488644A (de) | 1967-12-13 | 1967-12-13 | Verfahren und Vorrichtung zur kontinuierlichen Herstellung von Carbonsäureanhydriden aus mehrbasischen Carbonsäuren |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1227887A true GB1227887A (enrdf_load_stackoverflow) | 1971-04-07 |
Family
ID=4425979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1227887D Expired GB1227887A (enrdf_load_stackoverflow) | 1967-12-13 | 1968-12-09 |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS5120486B1 (enrdf_load_stackoverflow) |
| BE (1) | BE724844A (enrdf_load_stackoverflow) |
| CH (1) | CH488644A (enrdf_load_stackoverflow) |
| DE (1) | DE1809941A1 (enrdf_load_stackoverflow) |
| FR (1) | FR1595031A (enrdf_load_stackoverflow) |
| GB (1) | GB1227887A (enrdf_load_stackoverflow) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4962411A (enrdf_load_stackoverflow) * | 1972-06-21 | 1974-06-17 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2356049C3 (de) * | 1973-11-09 | 1987-10-22 | Basf Ag, 6700 Ludwigshafen | Gewinnung von maleinsaeureanhydrid aus den abgasen der phthalsaeureanhydridherstellung |
-
1967
- 1967-12-13 CH CH1750967A patent/CH488644A/de not_active IP Right Cessation
-
1968
- 1968-11-20 DE DE19681809941 patent/DE1809941A1/de active Pending
- 1968-12-03 BE BE724844D patent/BE724844A/xx unknown
- 1968-12-09 GB GB1227887D patent/GB1227887A/en not_active Expired
- 1968-12-11 FR FR1595031D patent/FR1595031A/fr not_active Expired
- 1968-12-12 JP JP9060068A patent/JPS5120486B1/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4962411A (enrdf_load_stackoverflow) * | 1972-06-21 | 1974-06-17 |
Also Published As
| Publication number | Publication date |
|---|---|
| CH488644A (de) | 1970-04-15 |
| DE1809941A1 (de) | 1969-07-17 |
| JPS5120486B1 (enrdf_load_stackoverflow) | 1976-06-25 |
| BE724844A (enrdf_load_stackoverflow) | 1969-05-16 |
| FR1595031A (enrdf_load_stackoverflow) | 1970-06-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1428814A (en) | Process for the manufacutre of acrylic acid esters | |
| US4219389A (en) | Separation of acrylic acid from solutions thereof in tri-n-butyl phosphate | |
| MY107657A (en) | Process for the production of carboxylic acid anhydrides. | |
| GB1055532A (en) | Improvements in and relating to processes for the production of glacial acrylic acid | |
| GB1227887A (enrdf_load_stackoverflow) | ||
| GB1148280A (en) | Production of maleic anhydride by dehydrating maleic acid | |
| GB1300833A (en) | Production of ethylene glycol | |
| GB1331207A (en) | Process for the recovery of ethylene oxide | |
| GB1242320A (en) | Process for the dehydration of maleic acid | |
| GB935178A (en) | Maintaining free from scale the heating surfaces of evaporators | |
| GB695170A (en) | Method of purifying organic compounds | |
| US2885436A (en) | Process for the purification of lactic acid | |
| KR880002895A (ko) | N-보호된-α-L-아스파르틸-L-페닐알라닌의 분리방법 | |
| US2450717A (en) | Method of recovering dextrins from stillage sirup | |
| GB1456101A (en) | Process for dehydrating aqueous solutions of maleic acid to maleic anhydride | |
| GB957679A (en) | Process for the esterification of carboxylic acids | |
| GB1287511A (en) | Method for the production of tetrabromophthalic esters | |
| GB1175079A (en) | Process for Treating Solutions Obtained as By-Products During the Manufacture of Phthalic Anhydride | |
| SU537995A1 (ru) | Способ получени малеинового ангидрида | |
| GB1396489A (en) | Process for the dehydration of maleic acid | |
| GB1441380A (en) | Process for the production of maleic anhydride | |
| SU1386556A1 (ru) | Способ получени брома | |
| SU104770A1 (ru) | Способ получени пропноновой кислоты из ее эфиров | |
| GB1223028A (en) | Preparation of carboxylic acids and/or esters | |
| FR2378856A1 (fr) | Installation de distillation de liqueurs alcooliques et d'evaporation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |