FR2386520A1 - Procede de preparation de l'acide 1-amino-8-naphtol-3,6-disulfonique (acide " h ") - Google Patents
Procede de preparation de l'acide 1-amino-8-naphtol-3,6-disulfonique (acide " h ")Info
- Publication number
- FR2386520A1 FR2386520A1 FR7810429A FR7810429A FR2386520A1 FR 2386520 A1 FR2386520 A1 FR 2386520A1 FR 7810429 A FR7810429 A FR 7810429A FR 7810429 A FR7810429 A FR 7810429A FR 2386520 A1 FR2386520 A1 FR 2386520A1
- Authority
- FR
- France
- Prior art keywords
- acid
- amino
- naphtol
- preparing
- disulphonic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Selon l'invention, on fait réagir un mélange d'acides naphtylamine-trisulfoniques et/ou de leurs sels avec une solution d'hydroxyde alcalin, à chaud et sous pression, on précipite l'acide 1-amino-8-naphtol-3,6-disulfonique par acidification à l'état de sel monoalcalin et on sépare ce dernier. On sait que l'acide 1-amino-8-naphtol-3,6-disulfonique, acide << H >>, est utilisé dans de nombreuses synthèses de colorants.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19772716030 DE2716030C3 (de) | 1977-04-09 | 1977-04-09 | Verfahren zur Herstellung von Monoalkalisalzes der 1-Amino-8-naphthol-3,6-disulfonsäure |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2386520A1 true FR2386520A1 (fr) | 1978-11-03 |
FR2386520B1 FR2386520B1 (fr) | 1984-08-31 |
Family
ID=6006077
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7810429A Granted FR2386520A1 (fr) | 1977-04-09 | 1978-04-07 | Procede de preparation de l'acide 1-amino-8-naphtol-3,6-disulfonique (acide " h ") |
Country Status (8)
Country | Link |
---|---|
JP (1) | JPS53127448A (fr) |
BE (1) | BE865774A (fr) |
BR (1) | BR7802175A (fr) |
CH (1) | CH634045A5 (fr) |
DE (1) | DE2716030C3 (fr) |
FR (1) | FR2386520A1 (fr) |
GB (1) | GB1577697A (fr) |
IT (1) | IT1156158B (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0064651A1 (fr) * | 1981-05-07 | 1982-11-17 | Bayer Ag | Procédé pour l'isolation de l'acide H et de l'acide K |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2834166A1 (de) * | 1978-08-04 | 1980-02-28 | Bayer Ag | Verfahren zur herstellung von 1-amino-8-naphthol-3,6-disulfonsaeure (h-saeure) |
DE2843680A1 (de) * | 1978-10-06 | 1980-04-24 | Bayer Ag | Verfahren zur herstellung von 1-amino-8-naphthol-4,6-disulfonsaeure (k-saeure) |
JPS6388617A (ja) * | 1986-10-01 | 1988-04-19 | Mitsubishi Electric Corp | 比例制御ガバナ |
CN109096154A (zh) * | 2018-08-16 | 2018-12-28 | 山东裕源集团有限公司 | 一种h酸生产工艺 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR550850A (fr) * | 1921-12-12 | 1923-03-21 | Nouveau procédé de préparation de l'acide h | |
US1670406A (en) * | 1925-05-09 | 1928-05-22 | Newport Co | Process of preparing h-acid |
US2272272A (en) * | 1939-09-02 | 1942-02-10 | Allied Chem & Dye Corp | Process for preparing hydroxy naphthalene compounds |
DE2727345A1 (de) * | 1976-06-21 | 1977-12-29 | Sumitomo Chemical Co | Verfahren zur herstellung von 8-amino-1-naphthol-3,6-disulfonsaeure |
FR2385692A1 (fr) * | 1977-03-31 | 1978-10-27 | Ciba Geigy Ag | Procede pour la preparation d'acides naphtylamino-hydroxysulfoniques |
EP0000493A1 (fr) * | 1977-07-16 | 1979-02-07 | Bayer Ag | Procédé pour la préparation d'acide amino-1-hydroxy-8-naphtalène-3,6-disulfonique (acide-H). |
-
1977
- 1977-04-09 DE DE19772716030 patent/DE2716030C3/de not_active Expired
-
1978
- 1978-04-04 GB GB13142/78A patent/GB1577697A/en not_active Expired
- 1978-04-06 CH CH371478A patent/CH634045A5/de not_active IP Right Cessation
- 1978-04-07 BE BE2056856A patent/BE865774A/fr not_active IP Right Cessation
- 1978-04-07 IT IT48792/78A patent/IT1156158B/it active
- 1978-04-07 FR FR7810429A patent/FR2386520A1/fr active Granted
- 1978-04-07 JP JP4045178A patent/JPS53127448A/ja active Granted
- 1978-04-07 BR BR7802175A patent/BR7802175A/pt unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR550850A (fr) * | 1921-12-12 | 1923-03-21 | Nouveau procédé de préparation de l'acide h | |
US1670406A (en) * | 1925-05-09 | 1928-05-22 | Newport Co | Process of preparing h-acid |
US2272272A (en) * | 1939-09-02 | 1942-02-10 | Allied Chem & Dye Corp | Process for preparing hydroxy naphthalene compounds |
DE2727345A1 (de) * | 1976-06-21 | 1977-12-29 | Sumitomo Chemical Co | Verfahren zur herstellung von 8-amino-1-naphthol-3,6-disulfonsaeure |
FR2385692A1 (fr) * | 1977-03-31 | 1978-10-27 | Ciba Geigy Ag | Procede pour la preparation d'acides naphtylamino-hydroxysulfoniques |
EP0000493A1 (fr) * | 1977-07-16 | 1979-02-07 | Bayer Ag | Procédé pour la préparation d'acide amino-1-hydroxy-8-naphtalène-3,6-disulfonique (acide-H). |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0064651A1 (fr) * | 1981-05-07 | 1982-11-17 | Bayer Ag | Procédé pour l'isolation de l'acide H et de l'acide K |
Also Published As
Publication number | Publication date |
---|---|
IT1156158B (it) | 1987-01-28 |
GB1577697A (en) | 1980-10-29 |
DE2716030C3 (de) | 1981-07-16 |
DE2716030A1 (de) | 1978-10-19 |
JPS5645910B2 (fr) | 1981-10-29 |
CH634045A5 (en) | 1983-01-14 |
BR7802175A (pt) | 1978-12-19 |
DE2716030B2 (de) | 1980-09-11 |
IT7848792A0 (it) | 1978-04-07 |
BE865774A (fr) | 1978-10-09 |
JPS53127448A (en) | 1978-11-07 |
FR2386520B1 (fr) | 1984-08-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |