CH601209A5 - - Google Patents
Info
- Publication number
- CH601209A5 CH601209A5 CH1675174A CH1675174A CH601209A5 CH 601209 A5 CH601209 A5 CH 601209A5 CH 1675174 A CH1675174 A CH 1675174A CH 1675174 A CH1675174 A CH 1675174A CH 601209 A5 CH601209 A5 CH 601209A5
- Authority
- CH
- Switzerland
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C309/00—Sulfonic acids; Halides, esters, or anhydrides thereof
- C07C309/01—Sulfonic acids
- C07C309/28—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
- C07C309/45—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton containing nitrogen atoms, not being part of nitro or nitroso groups, bound to the carbon skeleton
- C07C309/46—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton containing nitrogen atoms, not being part of nitro or nitroso groups, bound to the carbon skeleton having the sulfo groups bound to carbon atoms of non-condensed six-membered aromatic rings
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2362781A DE2362781C3 (de) | 1973-12-18 | 1973-12-18 | Verfahren zur Herstellung von Lösungen der 4,4'-Diaminostilben-2,2'disulfonsäure in Form ihrer Alkalisalze |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH601209A5 true CH601209A5 (xx) | 1978-06-30 |
Family
ID=5901065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH1675174A CH601209A5 (xx) | 1973-12-18 | 1974-12-17 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3989743A (xx) |
| JP (1) | JPS5093953A (xx) |
| CH (1) | CH601209A5 (xx) |
| DE (1) | DE2362781C3 (xx) |
| FR (1) | FR2254560B1 (xx) |
| GB (1) | GB1426424A (xx) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4179476A (en) * | 1975-07-31 | 1979-12-18 | Ciba-Geigy Corporation | Semi-continuous process for obtaining amino compounds |
| US4070395A (en) * | 1975-08-13 | 1978-01-24 | Nippon Kayaku Kabushiki Kaisha | Process for the preparation of 4,4'-diaminostilbene-2,2'-disulfonic acid or its salts |
| DE3347452A1 (de) * | 1983-12-29 | 1985-07-11 | Basf Ag, 6700 Ludwigshafen | Verfahren zur herstellung von aromatischen aminosulfonsaeuren |
| CN102516136A (zh) * | 2011-10-31 | 2012-06-27 | 天津大学 | 由dns钠盐制备4，4′-二氨基二苯乙烯-2，2′-二磺酸的方法 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2636901A (en) * | 1949-05-11 | 1953-04-28 | Commercial Solvents Corp | Process for reduction of nitroolefins |
| US2784220A (en) * | 1953-07-17 | 1957-03-05 | Du Pont | Process for preparing 4, 4'-diaminostilbene-2, 2'-disodium sulfonate and the free acid thereof |
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1973
- 1973-12-18 DE DE2362781A patent/DE2362781C3/de not_active Expired
-
1974
- 1974-12-11 US US05/531,751 patent/US3989743A/en not_active Expired - Lifetime
- 1974-12-16 JP JP49143584A patent/JPS5093953A/ja active Pending
- 1974-12-17 GB GB5440774A patent/GB1426424A/en not_active Expired
- 1974-12-17 CH CH1675174A patent/CH601209A5/xx not_active IP Right Cessation
- 1974-12-18 FR FR7441773A patent/FR2254560B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5093953A (xx) | 1975-07-26 |
| DE2362781C3 (de) | 1978-05-11 |
| DE2362781B2 (de) | 1977-09-08 |
| FR2254560A1 (xx) | 1975-07-11 |
| GB1426424A (en) | 1976-02-25 |
| US3989743A (en) | 1976-11-02 |
| FR2254560B1 (xx) | 1978-07-13 |
| DE2362781A1 (de) | 1975-06-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased |