AT312573B - Verfahren zur Gewinnung von reinem Maleinsäureanhydrid - Google Patents
Verfahren zur Gewinnung von reinem MaleinsäureanhydridInfo
- Publication number
- AT312573B AT312573B AT192872A AT192872A AT312573B AT 312573 B AT312573 B AT 312573B AT 192872 A AT192872 A AT 192872A AT 192872 A AT192872 A AT 192872A AT 312573 B AT312573 B AT 312573B
- Authority
- AT
- Austria
- Prior art keywords
- production
- maleic anhydride
- pure maleic
- pure
- anhydride
- Prior art date
Links
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 title 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/16—Fractionating columns in which vapour bubbles through liquid
- B01D3/163—Plates with valves
-
- 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
- C07C51/573—Separation; Purification; Stabilisation; Use of additives
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH339771A CH543471A (de) | 1971-03-09 | 1971-03-09 | Verfahren zur Gewinnung von reinem Maleinsäureanhydrid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT312573B true AT312573B (de) | 1974-01-10 |
Family
ID=4255090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT192872A AT312573B (de) | 1971-03-09 | 1972-03-08 | Verfahren zur Gewinnung von reinem Maleinsäureanhydrid |
Country Status (10)
| Country | Link |
|---|---|
| AT (1) | AT312573B (cs) |
| BE (1) | BE779975A (cs) |
| CH (1) | CH543471A (cs) |
| DE (1) | DE2209036A1 (cs) |
| ES (1) | ES400455A1 (cs) |
| FR (1) | FR2128708A1 (cs) |
| GB (1) | GB1363533A (cs) |
| IT (1) | IT951809B (cs) |
| NL (1) | NL7203067A (cs) |
| ZA (1) | ZA721043B (cs) |
-
1971
- 1971-03-09 CH CH339771A patent/CH543471A/de not_active IP Right Cessation
-
1972
- 1972-02-17 ZA ZA721043A patent/ZA721043B/xx unknown
- 1972-02-25 GB GB884472A patent/GB1363533A/en not_active Expired
- 1972-02-25 DE DE19722209036 patent/DE2209036A1/de active Pending
- 1972-02-29 IT IT21203/72A patent/IT951809B/it active
- 1972-02-29 BE BE779975A patent/BE779975A/xx unknown
- 1972-03-04 ES ES400455A patent/ES400455A1/es not_active Expired
- 1972-03-07 FR FR7207908A patent/FR2128708A1/fr not_active Withdrawn
- 1972-03-08 NL NL7203067A patent/NL7203067A/xx not_active Application Discontinuation
- 1972-03-08 AT AT192872A patent/AT312573B/de not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| IT951809B (it) | 1973-07-10 |
| ZA721043B (en) | 1972-10-25 |
| NL7203067A (cs) | 1972-09-12 |
| GB1363533A (en) | 1974-08-14 |
| ES400455A1 (es) | 1974-12-16 |
| BE779975A (fr) | 1972-06-16 |
| FR2128708A1 (cs) | 1972-10-20 |
| DE2209036A1 (cs) | 1972-12-07 |
| CH543471A (de) | 1973-10-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ELJ | Ceased due to non-payment of the annual fee |