DE2860341D1 - Process for the preparation of 1-amino-8-hydroxy naphthalene-3,6-disulphonic acids (h-acids). - Google Patents
Process for the preparation of 1-amino-8-hydroxy naphthalene-3,6-disulphonic acids (h-acids).Info
- Publication number
- DE2860341D1 DE2860341D1 DE7878100358T DE2860341T DE2860341D1 DE 2860341 D1 DE2860341 D1 DE 2860341D1 DE 7878100358 T DE7878100358 T DE 7878100358T DE 2860341 T DE2860341 T DE 2860341T DE 2860341 D1 DE2860341 D1 DE 2860341D1
- Authority
- DE
- Germany
- Prior art keywords
- acids
- amino
- preparation
- disulphonic
- hydroxy naphthalene
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C303/00—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides
- C07C303/02—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides of sulfonic acids or halides thereof
- C07C303/22—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides of sulfonic acids or halides thereof from sulfonic acids, by reactions not involving the formation of sulfo or halosulfonyl groups; from sulfonic halides by reactions not involving the formation of halosulfonyl groups
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE7878100358T DE2860341D1 (en) | 1977-07-16 | 1978-07-11 | Process for the preparation of 1-amino-8-hydroxy naphthalene-3,6-disulphonic acids (h-acids). |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19772732266 DE2732266A1 (de) | 1977-07-16 | 1977-07-16 | Verfahren zur herstellung von 1-amino-8-naphthol-3,6-disulfonsaeure (h-saeure) |
DE7878100358T DE2860341D1 (en) | 1977-07-16 | 1978-07-11 | Process for the preparation of 1-amino-8-hydroxy naphthalene-3,6-disulphonic acids (h-acids). |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2860341D1 true DE2860341D1 (en) | 1981-02-12 |
Family
ID=6014125
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19772732266 Withdrawn DE2732266A1 (de) | 1977-07-16 | 1977-07-16 | Verfahren zur herstellung von 1-amino-8-naphthol-3,6-disulfonsaeure (h-saeure) |
DE7878100358T Expired DE2860341D1 (en) | 1977-07-16 | 1978-07-11 | Process for the preparation of 1-amino-8-hydroxy naphthalene-3,6-disulphonic acids (h-acids). |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19772732266 Withdrawn DE2732266A1 (de) | 1977-07-16 | 1977-07-16 | Verfahren zur herstellung von 1-amino-8-naphthol-3,6-disulfonsaeure (h-saeure) |
Country Status (6)
Country | Link |
---|---|
US (1) | US4166826A (de) |
EP (1) | EP0000495B1 (de) |
JP (1) | JPS5419955A (de) |
BR (1) | BR7804542A (de) |
DE (2) | DE2732266A1 (de) |
IT (1) | IT7850308A0 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4325889A (en) * | 1978-08-04 | 1982-04-20 | Bayer Aktiengesellschaft | Process for the preparation of 1-amino-8-naphthol-3,6-disulphonic acid (H-acid) |
DE2843680A1 (de) * | 1978-10-06 | 1980-04-24 | Bayer Ag | Verfahren zur herstellung von 1-amino-8-naphthol-4,6-disulfonsaeure (k-saeure) |
DE3118147A1 (de) | 1981-05-07 | 1982-12-02 | Bayer Ag, 5090 Leverkusen | Verfahren zur isolierung von h-saeure und k-saeure |
CN1057521C (zh) * | 1997-08-16 | 2000-10-18 | 吉林化学工业股份有限公司染料厂 | 1-氨基-8-奈酚-3.6二磺酸单钠盐生产工艺的改进 |
CN108003071A (zh) * | 2017-12-04 | 2018-05-08 | 大柴旦乐青科技化学有限公司 | 一种h酸高压碱熔工艺 |
CN107986997A (zh) * | 2017-12-08 | 2018-05-04 | 荆门市熊兴化工有限公司 | 一种用于h酸生产过程中的碱熔方法 |
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 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1670406A (en) * | 1925-05-09 | 1928-05-22 | Newport Co | Process of preparing h-acid |
US1573056A (en) * | 1925-05-09 | 1926-02-16 | Newport Co | Process of preparing 1, 8-aminonaphthol sulphonic acids |
-
1977
- 1977-07-16 DE DE19772732266 patent/DE2732266A1/de not_active Withdrawn
-
1978
- 1978-06-28 US US05/920,032 patent/US4166826A/en not_active Expired - Lifetime
- 1978-07-11 DE DE7878100358T patent/DE2860341D1/de not_active Expired
- 1978-07-11 EP EP78100358A patent/EP0000495B1/de not_active Expired
- 1978-07-14 IT IT7850308A patent/IT7850308A0/it unknown
- 1978-07-14 BR BR7804542A patent/BR7804542A/pt unknown
- 1978-07-14 JP JP8525678A patent/JPS5419955A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
BR7804542A (pt) | 1979-03-20 |
JPS5419955A (en) | 1979-02-15 |
DE2732266A1 (de) | 1979-02-01 |
EP0000495B1 (de) | 1980-11-26 |
EP0000495A1 (de) | 1979-02-07 |
US4166826A (en) | 1979-09-04 |
IT7850308A0 (it) | 1978-07-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8339 | Ceased/non-payment of the annual fee |