DD112981A5 - - Google Patents
Info
- Publication number
- DD112981A5 DD112981A5 DD180716A DD18071674A DD112981A5 DD 112981 A5 DD112981 A5 DD 112981A5 DD 180716 A DD180716 A DD 180716A DD 18071674 A DD18071674 A DD 18071674A DD 112981 A5 DD112981 A5 DD 112981A5
- Authority
- DD
- German Democratic Republic
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
- C07C51/54—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)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Furan Compounds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4052873A GB1424747A (en) | 1973-08-28 | 1973-08-28 | Method and apparatus for the continuous dehydration of maleic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DD112981A5 true DD112981A5 (https=) | 1975-05-12 |
Family
ID=10415353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DD180716A DD112981A5 (https=) | 1973-08-28 | 1974-08-26 |
Country Status (27)
| Country | Link |
|---|---|
| US (1) | US3993671A (https=) |
| JP (1) | JPS5844666B2 (https=) |
| AR (1) | AR201054A1 (https=) |
| AT (1) | AT337152B (https=) |
| BE (1) | BE819223A (https=) |
| BG (1) | BG43526A3 (https=) |
| BR (1) | BR7407096D0 (https=) |
| CA (1) | CA1024153A (https=) |
| CH (1) | CH587793A5 (https=) |
| CS (1) | CS190436B2 (https=) |
| DD (1) | DD112981A5 (https=) |
| DE (1) | DE2440746C2 (https=) |
| EG (1) | EG11208A (https=) |
| ES (1) | ES429547A1 (https=) |
| FI (1) | FI61892C (https=) |
| FR (1) | FR2242388B1 (https=) |
| GB (1) | GB1424747A (https=) |
| HU (1) | HU173131B (https=) |
| IN (1) | IN143188B (https=) |
| IT (1) | IT1019109B (https=) |
| NL (1) | NL182958C (https=) |
| PL (1) | PL104721B1 (https=) |
| RO (1) | RO67329A (https=) |
| SE (1) | SE396386B (https=) |
| TR (1) | TR18421A (https=) |
| YU (1) | YU232074A (https=) |
| ZA (1) | ZA745484B (https=) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2484417A1 (fr) * | 1980-06-13 | 1981-12-18 | Charbonnages Ste Chimique | Procede continu de deshydratation de l'acide maleique et installation pour sa mise en oeuvre |
| US5518730A (en) * | 1992-06-03 | 1996-05-21 | Fuisz Technologies Ltd. | Biodegradable controlled release flash flow melt-spun delivery system |
| US5929255A (en) * | 1996-07-11 | 1999-07-27 | Bp Amoco Corporation | Process for coproducing fumaric acid and maleic anhydride |
| IN192334B (https=) | 2001-06-19 | 2004-04-10 | Nippon Catalytic Chem Ind | |
| GB0325530D0 (en) | 2003-10-31 | 2003-12-03 | Davy Process Techn Ltd | Process |
| JP2009532383A (ja) | 2006-03-30 | 2009-09-10 | ジェレシス， インク． | 胃充填材としてのポリマ材料及びそれらの調製 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2688622A (en) * | 1951-09-21 | 1954-09-07 | American Cyanamid Co | Process for producing maleic anhydride |
| DE1194838B (de) * | 1961-03-07 | 1965-06-16 | Basf Ag | Verfahren zur Herstellung von reinem fumarsaeurefreiem Maleinsaeureanhydrid aus Maleinsaeure oder deren waessrigen Loesungen |
| FR1524319A (fr) * | 1967-03-30 | 1968-05-10 | Houilleres Bassin Du Nord | Procédé de déshydratation de l'acide maléique en anhydride |
| GB1242320A (en) * | 1968-01-30 | 1971-08-11 | Ucb Union Chimiqu Chemische Be | Process for the dehydration of maleic acid |
| DE2061335C3 (de) * | 1970-12-12 | 1975-07-17 | Metallgesellschaft Ag, 6000 Frankfurt | Verfahren zur Gewinnung von reinem Maleinsäureanhydrid |
-
1973
- 1973-08-28 GB GB4052873A patent/GB1424747A/en not_active Expired
-
1974
- 1974-07-27 BG BG027362A patent/BG43526A3/xx unknown
- 1974-08-23 NL NLAANVRAGE7411276,A patent/NL182958C/xx active Search and Examination
- 1974-08-23 FI FI2486/74A patent/FI61892C/fi active
- 1974-08-23 SE SE7410733A patent/SE396386B/xx unknown
- 1974-08-26 CS CS745881A patent/CS190436B2/cs unknown
- 1974-08-26 EG EG356/74A patent/EG11208A/xx active
- 1974-08-26 YU YU02320/74A patent/YU232074A/xx unknown
- 1974-08-26 FR FR7429190A patent/FR2242388B1/fr not_active Expired
- 1974-08-26 DE DE2440746A patent/DE2440746C2/de not_active Expired
- 1974-08-26 DD DD180716A patent/DD112981A5/xx unknown
- 1974-08-26 ES ES429547A patent/ES429547A1/es not_active Expired
- 1974-08-26 AR AR255314A patent/AR201054A1/es active
- 1974-08-27 TR TR18421A patent/TR18421A/xx unknown
- 1974-08-27 ZA ZA00745484A patent/ZA745484B/xx unknown
- 1974-08-27 AT AT691674A patent/AT337152B/de not_active IP Right Cessation
- 1974-08-27 BE BE1006139A patent/BE819223A/xx not_active IP Right Cessation
- 1974-08-27 CA CA207,935A patent/CA1024153A/en not_active Expired
- 1974-08-27 US US05/501,196 patent/US3993671A/en not_active Expired - Lifetime
- 1974-08-27 CH CH1163774A patent/CH587793A5/xx not_active IP Right Cessation
- 1974-08-27 RO RO7479864A patent/RO67329A/ro unknown
- 1974-08-27 IT IT52743/74A patent/IT1019109B/it active
- 1974-08-27 HU HU74UE55A patent/HU173131B/hu unknown
- 1974-08-27 IN IN1929/CAL/74A patent/IN143188B/en unknown
- 1974-08-27 JP JP49098311A patent/JPS5844666B2/ja not_active Expired
- 1974-08-27 BR BR7096/74A patent/BR7407096D0/pt unknown
- 1974-08-28 PL PL1974173712A patent/PL104721B1/pl unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FI61892C (fi) | 1982-10-11 |
| GB1424747A (en) | 1976-02-11 |
| ATA691674A (de) | 1976-10-15 |
| IT1019109B (it) | 1977-11-10 |
| BG43526A3 (bg) | 1988-06-15 |
| ES429547A1 (es) | 1976-10-01 |
| AR201054A1 (es) | 1975-02-06 |
| NL182958C (nl) | 1988-06-16 |
| FI248674A7 (https=) | 1975-03-01 |
| FR2242388B1 (https=) | 1980-05-09 |
| US3993671A (en) | 1976-11-23 |
| NL7411276A (nl) | 1975-03-04 |
| RO67329A (ro) | 1980-03-15 |
| AU7272774A (en) | 1976-03-04 |
| EG11208A (en) | 1977-01-31 |
| BE819223A (fr) | 1975-02-27 |
| PL104721B1 (pl) | 1979-09-29 |
| HU173131B (hu) | 1979-02-28 |
| DE2440746C2 (de) | 1985-07-04 |
| SE7410733L (https=) | 1975-03-03 |
| FI61892B (fi) | 1982-06-30 |
| TR18421A (tr) | 1977-01-28 |
| BR7407096D0 (pt) | 1975-06-24 |
| ZA745484B (en) | 1975-09-24 |
| SE396386B (sv) | 1977-09-19 |
| CA1024153A (en) | 1978-01-10 |
| CH587793A5 (https=) | 1977-05-13 |
| JPS5050316A (https=) | 1975-05-06 |
| IN143188B (https=) | 1977-10-15 |
| YU232074A (en) | 1982-02-28 |
| CS190436B2 (en) | 1979-05-31 |
| AT337152B (de) | 1977-06-10 |
| JPS5844666B2 (ja) | 1983-10-04 |
| DE2440746A1 (de) | 1975-03-13 |
| FR2242388A1 (https=) | 1975-03-28 |