BE730473A - - Google Patents
Info
- Publication number
- BE730473A BE730473A BE730473DA BE730473A BE 730473 A BE730473 A BE 730473A BE 730473D A BE730473D A BE 730473DA BE 730473 A BE730473 A BE 730473A
- Authority
- BE
- Belgium
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C231/00—Preparation of carboxylic acid amides
- C07C231/02—Preparation of carboxylic acid amides from carboxylic acids or from esters, anhydrides, or halides thereof by reaction with ammonia or amines
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1768049A DE1768049B2 (en) | 1968-03-26 | 1968-03-26 | Process for the preparation of 2,5- (di-arylamino) -terephthalic acids |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE730473A true BE730473A (en) | 1969-09-26 |
Family
ID=5699577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE730473D BE730473A (en) | 1968-03-26 | 1969-03-26 |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS5116418B1 (en) |
| BE (1) | BE730473A (en) |
| CH (1) | CH502987A (en) |
| DE (1) | DE1768049B2 (en) |
| FR (1) | FR2004790A1 (en) |
| GB (1) | GB1228727A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2542494C3 (en) * | 1975-09-24 | 1981-04-30 | Hoechst Ag, 6000 Frankfurt | Process for the preparation of pure substituted 2,5 diarylaminoterephthalic acid esters and the corresponding free acids |
| DE3104644A1 (en) * | 1981-02-10 | 1982-08-19 | Bayer Ag, 5090 Leverkusen | METHOD FOR PRODUCING DIMETHYLSUCCINYLOSUCCINATE, ITS DIATILIUM SALTS, DIANILINODIHYDROTEREPHTHALIC ACIDS, THEIR DIMETHYL ESTERS AND SALTS, AND DIANILINOTEREPHTHALIC ACIDS, THEIR DIMETHYLS |
| DE3834747A1 (en) * | 1988-10-12 | 1990-05-03 | Bayer Ag | METHOD FOR THE PRODUCTION OF 2,5-DIARYLAMINOTEREPHTHALIC ACIDS |
| AT401515B (en) * | 1993-10-19 | 1996-09-25 | Chemie Linz Gmbh | METHOD FOR RESTORING DIMETHYLSUCCINYLSUCCINATE |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB918511A (en) * | 1960-05-23 | 1963-02-13 | Ciba Ltd | Process for the manufacture of 2:5-diarylamino-terephthalic acids |
| US3285952A (en) * | 1962-11-20 | 1966-11-15 | Allied Chem | Oxidation of 2, 5-diarylamino-dihydro-terephthalates with nitrobenzene |
-
1968
- 1968-03-26 DE DE1768049A patent/DE1768049B2/en active Granted
-
1969
- 1969-03-24 CH CH442569A patent/CH502987A/en not_active IP Right Cessation
- 1969-03-25 GB GB1228727D patent/GB1228727A/en not_active Expired
- 1969-03-26 JP JP44022419A patent/JPS5116418B1/ja active Pending
- 1969-03-26 BE BE730473D patent/BE730473A/xx unknown
- 1969-03-26 FR FR6908960A patent/FR2004790A1/fr not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| GB1228727A (en) | 1971-04-15 |
| JPS5116418B1 (en) | 1976-05-24 |
| DE1768049A1 (en) | 1971-11-18 |
| DE1768049B2 (en) | 1974-06-20 |
| FR2004790A1 (en) | 1969-11-28 |
| DE1768049C3 (en) | 1975-02-13 |
| CH502987A (en) | 1971-02-15 |