ES421644A1 - Disazo dyestuffs - Google Patents
Disazo dyestuffsInfo
- Publication number
- ES421644A1 ES421644A1 ES421644A ES421644A ES421644A1 ES 421644 A1 ES421644 A1 ES 421644A1 ES 421644 A ES421644 A ES 421644A ES 421644 A ES421644 A ES 421644A ES 421644 A1 ES421644 A1 ES 421644A1
- Authority
- ES
- Spain
- Prior art keywords
- sulfonic acid
- free
- coupling component
- coupling
- groups
- 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
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B35/00—Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
- C09B35/02—Disazo dyes
- C09B35/039—Disazo dyes characterised by the tetrazo component
- C09B35/24—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of a diaryl amine
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Abstract
Procedure for the production of disazo dyes, which in free acid form correspond to the formula **(See formula)** in which K represents the rest of a coupling component free of azo groups, characterized in that the tetrazotized 4,4'-diaminodiphenylamino-2-sulfonic acid is subjected to the coupling in an acidic medium, in the molar ratio of 1: 1, with 2-amino-8-hydroxynaphthalene-6-sulfonic acid and subsequently, preferably in a weakly acidic to alkaline medium, with a coupling component free from azoic groups. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19722262675 DE2262675A1 (en) | 1972-12-21 | 1972-12-21 | DISAZO DYES |
Publications (1)
Publication Number | Publication Date |
---|---|
ES421644A1 true ES421644A1 (en) | 1976-03-16 |
Family
ID=5865096
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES421644A Expired ES421644A1 (en) | 1972-12-21 | 1973-12-20 | Disazo dyestuffs |
Country Status (11)
Country | Link |
---|---|
JP (2) | JPS4990328A (en) |
AR (1) | AR196961A1 (en) |
BE (1) | BE808820A (en) |
BR (1) | BR7309980D0 (en) |
CH (2) | CH567620B5 (en) |
DE (1) | DE2262675A1 (en) |
ES (1) | ES421644A1 (en) |
FR (1) | FR2211509B1 (en) |
GB (1) | GB1404090A (en) |
IT (1) | IT1001269B (en) |
NL (1) | NL7317325A (en) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE57857C (en) * | LEOPOLD CAS-SELLA & CO. in Frankfurt a. M | Process for the preparation of disazo dyes from amidonaphthol sulfonic acid | ||
DE528891C (en) * | 1928-09-12 | 1931-07-04 | Ici Ltd | Process for dyeing regenerated cellulose |
-
1972
- 1972-12-21 DE DE19722262675 patent/DE2262675A1/en active Pending
-
1973
- 1973-12-18 NL NL7317325A patent/NL7317325A/xx unknown
- 1973-12-19 IT IT8368273A patent/IT1001269B/en active
- 1973-12-19 CH CH1777773A patent/CH567620B5/xx not_active IP Right Cessation
- 1973-12-19 AR AR25160473A patent/AR196961A1/en active
- 1973-12-19 JP JP14144173A patent/JPS4990328A/ja active Pending
- 1973-12-19 CH CH1777773D patent/CH1777773A4/xx unknown
- 1973-12-19 BE BE139025A patent/BE808820A/en unknown
- 1973-12-19 JP JP14144273A patent/JPS4987874A/ja active Pending
- 1973-12-19 BR BR998073A patent/BR7309980D0/en unknown
- 1973-12-20 GB GB5910573A patent/GB1404090A/en not_active Expired
- 1973-12-20 ES ES421644A patent/ES421644A1/en not_active Expired
- 1973-12-21 FR FR7346008A patent/FR2211509B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
BR7309980D0 (en) | 1974-09-24 |
JPS4990328A (en) | 1974-08-29 |
GB1404090A (en) | 1975-08-28 |
CH1777773A4 (en) | 1975-05-15 |
NL7317325A (en) | 1974-06-25 |
CH567620B5 (en) | 1975-10-15 |
AR196961A1 (en) | 1974-02-28 |
FR2211509B1 (en) | 1977-08-12 |
DE2262675A1 (en) | 1974-06-27 |
JPS4987874A (en) | 1974-08-22 |
IT1001269B (en) | 1976-04-20 |
BE808820A (en) | 1974-06-19 |
FR2211509A1 (en) | 1974-07-19 |
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