ES401989A1 - Procedimiento para la fabricacion de dianhidrido piromeli- tico puro. - Google Patents
Procedimiento para la fabricacion de dianhidrido piromeli- tico puro.Info
- Publication number
- ES401989A1 ES401989A1 ES401989A ES401989A ES401989A1 ES 401989 A1 ES401989 A1 ES 401989A1 ES 401989 A ES401989 A ES 401989A ES 401989 A ES401989 A ES 401989A ES 401989 A1 ES401989 A1 ES 401989A1
- Authority
- ES
- Spain
- Prior art keywords
- dianhydride
- translation
- manufacture
- pure
- machine
- 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
- GTDPSWPPOUPBNX-UHFFFAOYSA-N ac1mqpva Chemical compound CC12C(=O)OC(=O)C1(C)C1(C)C2(C)C(=O)OC1=O GTDPSWPPOUPBNX-UHFFFAOYSA-N 0.000 title abstract 2
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 238000000034 method Methods 0.000 title abstract 2
- VLDPXPPHXDGHEW-UHFFFAOYSA-N 1-chloro-2-dichlorophosphoryloxybenzene Chemical compound ClC1=CC=CC=C1OP(Cl)(Cl)=O VLDPXPPHXDGHEW-UHFFFAOYSA-N 0.000 abstract 2
- 239000007789 gas Substances 0.000 abstract 2
- CYIDZMCFTVVTJO-UHFFFAOYSA-N pyromellitic acid Chemical compound OC(=O)C1=CC(C(O)=O)=C(C(O)=O)C=C1C(O)=O CYIDZMCFTVVTJO-UHFFFAOYSA-N 0.000 abstract 2
- 230000003197 catalytic effect Effects 0.000 abstract 1
- 238000002425 crystallisation Methods 0.000 abstract 1
- 230000008025 crystallization Effects 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 239000000376 reactant Substances 0.000 abstract 1
- 238000000926 separation method 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
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
-
- 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
- C07C51/255—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting
- C07C51/265—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting having alkyl side chains which are oxidised to carboxyl groups
-
- 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)
- Crystallography & Structural Chemistry (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH525871A CH540217A (de) | 1971-04-26 | 1971-04-26 | Verfahren zur Herstellung von reinem Pyromellithsäuredianhydrid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES401989A1 true ES401989A1 (es) | 1975-03-01 |
Family
ID=4290581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES401989A Expired ES401989A1 (es) | 1971-04-26 | 1972-04-21 | Procedimiento para la fabricacion de dianhidrido piromeli- tico puro. |
Country Status (8)
| Country | Link |
|---|---|
| BE (1) | BE781732A (es) |
| CH (1) | CH540217A (es) |
| DE (1) | DE2151238A1 (es) |
| ES (1) | ES401989A1 (es) |
| FR (1) | FR2134514A1 (es) |
| IT (1) | IT953752B (es) |
| NL (1) | NL7205522A (es) |
| ZA (1) | ZA722810B (es) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6579990B2 (en) | 2000-08-23 | 2003-06-17 | Mitsubishi Gas Chemical Company, Inc. | Process for producing refined pyromellitic acid and refined pyromellitic anhydride |
-
1971
- 1971-04-26 CH CH525871A patent/CH540217A/de not_active IP Right Cessation
- 1971-10-14 DE DE19712151238 patent/DE2151238A1/de active Pending
-
1972
- 1972-04-06 BE BE781732A patent/BE781732A/xx unknown
- 1972-04-21 ES ES401989A patent/ES401989A1/es not_active Expired
- 1972-04-24 IT IT23510/72A patent/IT953752B/it active
- 1972-04-24 NL NL7205522A patent/NL7205522A/xx unknown
- 1972-04-25 FR FR7214716A patent/FR2134514A1/fr active Granted
- 1972-04-26 ZA ZA722810A patent/ZA722810B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2134514A1 (en) | 1972-12-08 |
| BE781732A (fr) | 1972-07-31 |
| ZA722810B (en) | 1973-02-28 |
| DE2151238A1 (de) | 1972-12-21 |
| IT953752B (it) | 1973-08-10 |
| CH540217A (de) | 1973-08-15 |
| FR2134514B1 (es) | 1975-06-20 |
| NL7205522A (es) | 1972-10-30 |
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