GB674291A - Improvements relating to polyazo dyestuffs for leather - Google Patents
Improvements relating to polyazo dyestuffs for leatherInfo
- Publication number
- GB674291A GB674291A GB16030/50A GB1603050A GB674291A GB 674291 A GB674291 A GB 674291A GB 16030/50 A GB16030/50 A GB 16030/50A GB 1603050 A GB1603050 A GB 1603050A GB 674291 A GB674291 A GB 674291A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- disulphonic
- aminobenzene
- coupling
- methyl
- 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
- 239000010985 leather Substances 0.000 title abstract 3
- -1 polyazo Polymers 0.000 title 1
- 239000002253 acid Substances 0.000 abstract 6
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 abstract 5
- 230000008878 coupling Effects 0.000 abstract 3
- 238000010168 coupling process Methods 0.000 abstract 3
- 238000005859 coupling reaction Methods 0.000 abstract 3
- 239000000975 dye Substances 0.000 abstract 3
- HFACYLZERDEVSX-UHFFFAOYSA-N benzidine Chemical compound C1=CC(N)=CC=C1C1=CC=C(N)C=C1 HFACYLZERDEVSX-UHFFFAOYSA-N 0.000 abstract 2
- 150000008049 diazo compounds Chemical class 0.000 abstract 2
- 229910052739 hydrogen Inorganic materials 0.000 abstract 2
- 239000001257 hydrogen Substances 0.000 abstract 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 abstract 2
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 abstract 2
- 229960004889 salicylic acid Drugs 0.000 abstract 2
- NUIURNJTPRWVAP-UHFFFAOYSA-N 3,3'-Dimethylbenzidine Chemical compound C1=C(N)C(C)=CC(C=2C=C(C)C(N)=CC=2)=C1 NUIURNJTPRWVAP-UHFFFAOYSA-N 0.000 abstract 1
- NVLVJHQJUHUFAC-UHFFFAOYSA-N 3-aminobenzene-1,2-disulfonic acid Chemical compound NC1=CC=CC(S(O)(=O)=O)=C1S(O)(=O)=O NVLVJHQJUHUFAC-UHFFFAOYSA-N 0.000 abstract 1
- PPINMMULCRBDOS-UHFFFAOYSA-N 3-chloro-2-hydroxybenzoic acid Chemical compound OC(=O)C1=CC=CC(Cl)=C1O PPINMMULCRBDOS-UHFFFAOYSA-N 0.000 abstract 1
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 abstract 1
- NJESAXZANHETJV-UHFFFAOYSA-N 4-methylsalicylic acid Chemical group CC1=CC=C(C(O)=O)C(O)=C1 NJESAXZANHETJV-UHFFFAOYSA-N 0.000 abstract 1
- UWPJYQYRSWYIGZ-UHFFFAOYSA-N 5-aminonaphthalene-2-sulfonic acid Chemical compound OS(=O)(=O)C1=CC=C2C(N)=CC=CC2=C1 UWPJYQYRSWYIGZ-UHFFFAOYSA-N 0.000 abstract 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 238000004043 dyeing Methods 0.000 abstract 1
- 235000019253 formic acid Nutrition 0.000 abstract 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 abstract 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 230000007935 neutral effect Effects 0.000 abstract 1
- 239000007858 starting material Substances 0.000 abstract 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-N sulfonic acid Chemical group OS(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-N 0.000 abstract 1
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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Abstract
Tetrakisazo dyestuffs which dye leather in brown shades from an acid bath are manufactured by coupling 1 : 3-diaminobenzene or its 4-methyl derivative with, in either order, a diazo compound of an aminodisazo dyestuff of the general formula <FORM:0674291/IV (c)/1> (wherein A represents an o-hydroxybenzenecarboxylic acid radical, X represents hydrogen or methyl, one Y represents hydrogen and the other a sulphonic acid group) and a diazo compound of an aminobenzene disulphonic acid (e.g. 1-aminobenzene-2 : 5-, -2 : 4-, -3 : 5- or -2 : 6-disulphonic acid, 2-amino-1-methylbenzene-3 : 5-disulphonic acid, or 4-amino-1-methylbenzene-2 : 5-, -2 : 6- or -3 : 5-disulphonic acid). The aminodisazo dyestuffs employed as starting materials may be prepared by coupling tetrazotized benzidine or o-tolidine in an alkaline medium with an equimolecular proportion of an o-hydroxybenzenecarboxylic acid (e.g. salicylic acid or 3- or 4-methyl- or 3-chloro-2-hydroxybenzoic acid) and coupling the resulting diazoazo compound in an acid medium with 1-aminonaphthalene-6- or -7-sulphonic acid or a mixture thereof. Examples illustrate various combinations of the components enumerated above, and the dyeing of chrome tanned leather with the dyestuff salicylic acid \sM benzidine --> 1 - aminonaphthalene - 6 - sulphonic acid --> 1 : 3 - diaminobenzene \sM 1 - aminobenzene-2 : 5-disulphonic acid from a bath originally neutral ut acidified with formic acid in the later stages.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH674291X | 1949-06-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB674291A true GB674291A (en) | 1952-06-18 |
Family
ID=4527948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB16030/50A Expired GB674291A (en) | 1949-06-28 | 1950-06-27 | Improvements relating to polyazo dyestuffs for leather |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB674291A (en) |
-
1950
- 1950-06-27 GB GB16030/50A patent/GB674291A/en not_active Expired
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