GB443859A - Process for dyeing leather - Google Patents
Process for dyeing leatherInfo
- Publication number
- GB443859A GB443859A GB35222/34A GB3522234A GB443859A GB 443859 A GB443859 A GB 443859A GB 35222/34 A GB35222/34 A GB 35222/34A GB 3522234 A GB3522234 A GB 3522234A GB 443859 A GB443859 A GB 443859A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oxyethyl
- amino
- acid
- nitro
- chloro
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L7/00—Electrodynamic brake systems for vehicles in general
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/02—Material containing basic nitrogen
- D06P3/04—Material containing basic nitrogen containing amide groups
- D06P3/32—Material containing basic nitrogen containing amide groups leather skins
- D06P3/3206—Material containing basic nitrogen containing amide groups leather skins using acid dyes
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Acid wool and mordant dyes, dyeing with; azo dyes.--Leather, especially chrome leather, is dyed with a salt of an aminoazobenzenesulphonic acid containing in the residue of the coupling component a mono- or poly-oxyalkyl-amino group and containing, if desired, other nuclear substitutents. The neutralized hides are dyed in the rotary cask with 150--200 per cent of water at 65 DEG C., a solution of 1--2 per cent of the dyestuff being introduced through the hollow axle, the fat liquor being added after 45 minutes, and the cask being then kept in motion for a further 45 minutes, or longer in the case of heavy hides. Examples are given of the preparation of the dyestuffs: (1) 3-aminobenzenesulphonic acid --> di - (b - oxyethyl) aminobenzene which dyes leather a powerful yellow throughout; (2) 2-chloraniline --> 3-di-(b -oxyethyl)aminobenzenesulphonic acid, which dyes chrome leather a powerful yellow throughout; (3) 4-nitraniline --> 3-N-ethyl-(b -oxyethyl)aminobenzenesulphonic acid, which dyes chrome leather brownish red throughout; (4) 5 - nitro - 2 - aminobenzenesulphonic acid --> 3 - chloro - 1 - di - (b - oxyethyl)aminobenzene which dyes chrome leather deep bordeaux red on the surface and dark red violet in the interior. A table is also given showing the shades obtainable on the surface and in the interior of the leather with various combinations of dyestuff components, additional diazo components being 2 : 5- and 3 : 4-dichloranilines, 2- and 3-nitranilines, 4-chloro-2-nitraniline, 2 : 6-dichloro - 4 - nitraniline, 2 : 4 - dinitraniline, 3 - nitro - 4 - aminotoluene, 4 - nitro - 2 - amino - 1 - methoxybenzene, 4 - nitro - 2 - amino - 1 - (b - oxyethyl) - oxybenzene, 3 - nitro - 4 - amino-1 - ethoxybenzene, 6 - nitro - 3 - amino - 4 - methoxytoluene, 4 - aminobenzenesulphonic acid, 4 - chloro - 2 - aminobenzenesulphonic acid, 6 - chloro - 3 - aminobenzenesulphonic acid, 2 : 5 - dichloro - 3 - and 4 - aminobenzenesulphonic acids, 3 - nitro - 4 - aminobenzenesulphonic acid and 4-nitro-2-aminobenzenesulphonic acid, and additional coupling components being di-(b : g - dioxypropyl)aminobenzene, b -oxyethylaminobenzene, 3 - (b - oxyethyl)aminotoluene (cf. Specification 181,750, [Class 2 (iii)]), 3-di-(b -oxyethyl)aminotoluene, 4 - chloro - 2 - di - (b - oxyethyl)amino - 1 - methoxybenzene, 3 - di - (b - oxyethyl)aminophenol, 3 - di - (b : g - dioxypropyl)aminotoluene, 3 - chloro - 1 - di - (b : g - dioxypropyl)amino benzene, 3 - (b - oxyethyl)amino - 4 - methoxytoluene, 3 - di - (b - oxyethyl)amino - 4 - methoxytoluene, 3 - di - (b : g - dioxypropyl) amino - 4 - methoxytoluene and 2 - di - (b -oxyethyl)amino - 1 : 4 - dimethylbenzene. Specification 438,398 also is referred to. 3 - Di - (b - oxyethyl)aminobenzenesulphonic acid is obtained by heating glycol chlorhydrin (2 mols.) with metanilic acid (1 mol.) in presence of alkali. 3 - N - Ethyl - (b - oxyethyl)aminobenzenesulphonic acid is obtained by heating glycol chlorhydrin (1 mol.) with ethylmetanilic acid (1 mol.) in presence of alkali. 3 - Chlor - 1 - di - (b - oxyethyl)aminobenzene and 3 - chloro - 1 - di - (b - g - dioxypropyl) aminobenzene are obtained by reaction of glycol chlorhydrin and glycerol a -monochlorhydrin respectively with 3-chloraniline (cf. Specification 181,750). 4 - Chloro - 2 - di - (b - oxyethyl)amino-1-methoxybenzene is similarly obtained from glycol chlorhydrin and 4-chloro-2-amino-1-methoxybenzene. 4 - Nitro - 2 - amino - 1 - (b - oxyethyl)oxybenzene is obtained by partial reduction of 2 : 4 - dinitro - 1 - (b - oxyethyl)oxybenzene with sodium disulphide. Di - (b : g - dioxypropyl)aminobenzene is obtained by boiling aniline (1 mol.) and glycerol-a -monochlorhydrin (2 mols.) with an aqueous suspension of calcium carbonate. 3 - Di - (b : g - dioxypropyl)aminotoluene is obtained by heating glycerol-a -monochlorhydrin with m-toluidine. 3 - Di - (b : g - dioxypropyl)amino - 4 - methoxytoluene is obtained by reaction of glycerol-a -monochlorhydrin with 3-amino-4-methoxy-1-methylbenzene.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE443859X | 1911-04-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB443859A true GB443859A (en) | 1936-03-09 |
Family
ID=6531955
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB35222/34A Expired GB443859A (en) | 1933-12-07 | 1934-12-07 | Process for dyeing leather |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR443859A (en) |
GB (1) | GB443859A (en) |
-
1912
- 1912-04-20 FR FR443859D patent/FR443859A/en not_active Expired
-
1934
- 1934-12-07 GB GB35222/34A patent/GB443859A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR443859A (en) | 1912-10-04 |
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