CH547251A - Verfahren zur herstellung von dimethylmaleinsaeureanhydrid. - Google Patents
Verfahren zur herstellung von dimethylmaleinsaeureanhydrid.Info
- Publication number
- CH547251A CH547251A CH1026571A CH547251DA CH547251A CH 547251 A CH547251 A CH 547251A CH 1026571 A CH1026571 A CH 1026571A CH 547251D A CH547251D A CH 547251DA CH 547251 A CH547251 A CH 547251A
- Authority
- CH
- Switzerland
- Prior art keywords
- producing
- acid anhydride
- dimethylmaleic acid
- dimethylmaleic
- anhydride
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D213/72—Nitrogen atoms
- C07D213/74—Amino or imino radicals substituted by hydrocarbon or substituted hydrocarbon radicals
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D215/00—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems
- C07D215/02—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom
- C07D215/16—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D215/38—Nitrogen atoms
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Plural Heterocyclic Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Thiazole And Isothizaole Compounds (AREA)
- Furan Compounds (AREA)
- Pyridine Compounds (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1026571 | 1971-07-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH547251A true CH547251A (de) | 1974-03-29 |
Family
ID=4361307
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH1026571A CH547251A (de) | 1971-07-13 | 1971-07-13 | Verfahren zur herstellung von dimethylmaleinsaeureanhydrid. |
Country Status (9)
Country | Link |
---|---|
US (1) | US3818050A (de) |
JP (1) | JPS5243820B1 (de) |
BE (1) | BE786157A (de) |
CA (1) | CA993449A (de) |
CH (1) | CH547251A (de) |
DD (1) | DD99781A5 (de) |
DE (1) | DE2233862C3 (de) |
FR (1) | FR2145619B1 (de) |
GB (1) | GB1379795A (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60142561A (ja) * | 1983-12-28 | 1985-07-27 | Matsushita Electric Ind Co Ltd | 撮像装置の製造方法 |
US4639531A (en) * | 1984-08-15 | 1987-01-27 | Ciba-Geigy Corporation | Process for the preparation of dimethylmaleic anhydride |
US4644069A (en) * | 1984-08-15 | 1987-02-17 | Ciba-Geigy Corporation | Process for the preparation of dimethylmaleic anhydride |
US5098982A (en) * | 1989-10-10 | 1992-03-24 | The B. F. Goodrich Company | Radiation curable thermoplastic polyurethanes |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL110578C (de) * | 1958-11-07 |
-
0
- BE BE786157D patent/BE786157A/xx not_active IP Right Cessation
-
1971
- 1971-07-13 CH CH1026571A patent/CH547251A/de not_active IP Right Cessation
-
1972
- 1972-06-22 US US00265405A patent/US3818050A/en not_active Expired - Lifetime
- 1972-06-26 CA CA145,667A patent/CA993449A/en not_active Expired
- 1972-07-07 JP JP47068120A patent/JPS5243820B1/ja active Pending
- 1972-07-10 DE DE2233862A patent/DE2233862C3/de not_active Expired
- 1972-07-10 GB GB3220872A patent/GB1379795A/en not_active Expired
- 1972-07-12 FR FR7225222A patent/FR2145619B1/fr not_active Expired
- 1972-07-13 DD DD164412A patent/DD99781A5/xx unknown
Also Published As
Publication number | Publication date |
---|---|
US3818050A (en) | 1974-06-18 |
BE786157A (fr) | 1973-01-12 |
DE2233862C3 (de) | 1978-07-06 |
DE2233862A1 (de) | 1973-02-15 |
GB1379795A (en) | 1975-01-08 |
FR2145619B1 (de) | 1975-06-20 |
JPS5243820B1 (de) | 1977-11-02 |
CA993449A (en) | 1976-07-20 |
DD99781A5 (de) | 1973-08-20 |
DE2233862B2 (de) | 1977-11-17 |
FR2145619A1 (de) | 1973-02-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PL | Patent ceased |