GB274128A - Manufacture of azo dyestuffs - Google Patents
Manufacture of azo dyestuffsInfo
- Publication number
- GB274128A GB274128A GB18430/27A GB1843027A GB274128A GB 274128 A GB274128 A GB 274128A GB 18430/27 A GB18430/27 A GB 18430/27A GB 1843027 A GB1843027 A GB 1843027A GB 274128 A GB274128 A GB 274128A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chlor
- diazotized
- toluidide
- dimethyl
- amino
- 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
- C09B29/00—Monoazo dyes prepared by diazotising and coupling
- C09B29/10—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group
- C09B29/18—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group ortho-Hydroxy carbonamides
- C09B29/20—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group ortho-Hydroxy carbonamides of the naphthalene series
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Abstract
274,128. I. G. Farbenindustrie Akt.- Ges. July 9, 1926, [Convention date]. Azo dyes; lakes.-Azo dyes are produced in substance, on a substratum, or on the fibre by coupling diazotized 1 : 3-dimethyl-4-amino-6-halogen (or 2 : 6-dihalogen) benzenes with arylides of 2: 3-oxynaphthoic acid, the combination of diazotized 1 : 3 - dimethyl-4-amino-6-halogenbenzenes with arylides in which the aryl group is an asymmetrical m-xylidine residue being excluded. Various shades of yellow and red are obtained, the dyeings produced on the fibre being fast to light, chlorine, and kier-boiling. In an example, cotton is dyed red by padding with the 4-chlor-2-toluidide and developing with the diazotized 6-chlor derivative. The 6-brom- and 2 : 6- dichlorderivatives are also specified as diazo components, and the 2-toluidide, 5-chlor-2-anisidide, 4-chlor-2-toluidide, and #-naphthylamide as coupling components. Specifications 6379/12; 17279/13, [Class 15 (ii), Dyeing, Processes &c. for] ; 199,771, and 254,578 are referred to. The Specification as open to inspection under Sect. 91 (3) (a) comprises also an example in which cotton is dyed bluish red by padding with the alpha-naphthylamide and developing with the diazotized 2 : 6-dichlor-derivative. This subjectmatter does not appear in the Specification as accepted. 1 : 3 - Dimethyl-4-amino-6-halogen (or 2 : 6-dihalogen) benzenes are obtained by halogenating' asymmetrical m-xylidine in sulphuric' acid or the like as described for the chlorine derivatives in Specification 278,729.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE274128X | 1926-07-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB274128A true GB274128A (en) | 1928-10-29 |
Family
ID=6018888
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB18430/27A Expired GB274128A (en) | 1926-07-09 | 1927-07-11 | Manufacture of azo dyestuffs |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB274128A (en) |
-
1927
- 1927-07-11 GB GB18430/27A patent/GB274128A/en not_active Expired
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