IT1202758B - PROCEDURE FOR THE PREPARATION OF SULPHONIC NAFTYLAMIN ACIDS, IN PARTICULAR FOR THE PRODUCTION OF DYES - Google Patents
PROCEDURE FOR THE PREPARATION OF SULPHONIC NAFTYLAMIN ACIDS, IN PARTICULAR FOR THE PRODUCTION OF DYESInfo
- Publication number
- IT1202758B IT1202758B IT25996/78A IT2599678A IT1202758B IT 1202758 B IT1202758 B IT 1202758B IT 25996/78 A IT25996/78 A IT 25996/78A IT 2599678 A IT2599678 A IT 2599678A IT 1202758 B IT1202758 B IT 1202758B
- Authority
- IT
- Italy
- Prior art keywords
- naftylamin
- sulphonic
- dyes
- acids
- procedure
- Prior art date
Links
- 239000002253 acid Substances 0.000 title 1
- 150000007513 acids Chemical class 0.000 title 1
- 238000004519 manufacturing process Methods 0.000 title 1
- 238000000034 method Methods 0.000 title 1
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
- C07C309/47—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 at least one of the sulfo groups bound to a carbon atom of a six-membered aromatic ring being part of a condensed ring system
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3172377 | 1977-07-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IT7825996A0 IT7825996A0 (en) | 1978-07-21 |
| IT1202758B true IT1202758B (en) | 1989-02-09 |
Family
ID=10327427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT25996/78A IT1202758B (en) | 1977-07-28 | 1978-07-21 | PROCEDURE FOR THE PREPARATION OF SULPHONIC NAFTYLAMIN ACIDS, IN PARTICULAR FOR THE PRODUCTION OF DYES |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0000634A1 (en) |
| IT (1) | IT1202758B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4299779A (en) * | 1980-02-16 | 1981-11-10 | Clayton Aniline Co., Ltd. | Catalytic reduction of 2-nitronaphthalene-4,8-disulfonic acid ammonium salt |
| DE3347452A1 (en) * | 1983-12-29 | 1985-07-11 | Basf Ag, 6700 Ludwigshafen | METHOD FOR PRODUCING AROMATIC AMINOSULPHONIC ACIDS |
| DE4025131A1 (en) * | 1990-08-08 | 1992-02-13 | Bayer Ag | METHOD FOR PRODUCING AMINOARYL SULPHONIC ACIDS |
| CN105503662A (en) * | 2015-12-25 | 2016-04-20 | 铜陵化工集团有机化工有限责任公司 | Preparation method of 1-naphthylamine-5-sulfonic acid |
| CN111848459A (en) * | 2020-08-14 | 2020-10-30 | 中国天辰工程有限公司 | Clean and efficient preparation method of 1,6 and 1, 7-clevuric acid |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| DE1233408B (en) * | 1961-10-26 | 1967-02-02 | Basf Ag | Process for the production of aromatic aminosulfonic acids |
| DE2301739C3 (en) * | 1973-01-13 | 1980-11-27 | Basf Ag, 6700 Ludwigshafen | Process for the preparation of optionally halogen-substituted m-aminobenzenesulfonic acids |
| JPS5829300B2 (en) * | 1973-10-03 | 1983-06-22 | タオカカガクコウギヨウ カブシキガイシヤ | Ceramic acid sulfone sulfone |
-
1978
- 1978-07-12 EP EP78300141A patent/EP0000634A1/en not_active Withdrawn
- 1978-07-21 IT IT25996/78A patent/IT1202758B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| IT7825996A0 (en) | 1978-07-21 |
| EP0000634A1 (en) | 1979-02-07 |
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