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 ")

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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
Application number
FR7810429A
Other languages
English (en)
Other versions
FR2386520B1 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer AG
Original Assignee
Bayer AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bayer AG filed Critical Bayer AG
Publication of FR2386520A1 publication Critical patent/FR2386520A1/fr
Application granted granted Critical
Publication of FR2386520B1 publication Critical patent/FR2386520B1/fr
Granted legal-status Critical Current

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  • 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.
FR7810429A 1977-04-09 1978-04-07 Procede de preparation de l'acide 1-amino-8-naphtol-3,6-disulfonique (acide " h ") Granted FR2386520A1 (fr)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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).

Patent Citations (6)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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