GB637665A - Process for dyeing wool - Google Patents
Process for dyeing woolInfo
- Publication number
- GB637665A GB637665A GB17041/47A GB1704147A GB637665A GB 637665 A GB637665 A GB 637665A GB 17041/47 A GB17041/47 A GB 17041/47A GB 1704147 A GB1704147 A GB 1704147A GB 637665 A GB637665 A GB 637665A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bath
- acid
- treatment
- fibres
- dyestuff
- 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
-
- 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
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/0004—General aspects of dyeing
-
- 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
- D06P3/14—Wool
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Coloring (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
Wool fibres impregnated with a dyestuff but having substantially no dyestuff fixed thereon are brought into sudden contact under atmospheric pressure with a heated acidic solution. The fibres are impregnated by immersion or padding with a solution that may be non-acidic, preferably weakly alkaline, at a temperature of 20-95 DEG C., usually around 75 DEG C. Wetting agents (except alkyl naphthalene sulphonic acids), solubilizing agents (e.g. tragacanth mucilage, cellulose glycollic acid ether) may be added. Acid, direct and chrome dyestuffs, and ester salts (e.g. sulphates) of leuco-vat dyestuffs may be used, the usual after-treatment being necessary with the last two. When using ester salts of leuco compounds, it is desirable to add formaldehyde sulphoxylate to the impregnating bath. The impregnated fibres are then brought into sudden contact with an acidic solution above 80 DEG C., preferably boiling. The acid may be sulphuric, formic or oxalic, or a mixture of these, the correct pH for the fixation of the dyestuff being attained by the addition of a buffer, e.g. a monobasic phosphate or sodium sulphate. Non-ionic wetting agents may be present. The time of treatment in the acidic solution may be 1/2 -10 minutes and the process may be continuous. If the dyestuff does not require after-treatment, the goods are now removed, rinsed and finished in the usual way. If after-treatment is necessary, this may be combined with the present process. Thus, when using chrome or vat dyestuffs, the goods are passed directly from the heated acidic bath into a hot bath containing a bichromate with or without an acid such as sulphuric or formic. They are then rinsed and passed into a weak alkaline neutralizing bath, which may also be heated. Alternatively, the goods may, after leaving the heated acidic solution, be treated with chromate or bichromate solution by padding, spraying or immersion and then passed into a further heated acidic bath. In the case of vat dyestuffs, this may be sulphuric acid, with or without ammonium thiocyanate, oxalic acid or sulphites. For chrome dyestuffs, formic or acetic acid is desirable and the excess sulphuric acid from the previous bath may be neutralized by the addition of sodium formate or acetate, with ot without ammonium thiocyanate. These buffers or thiocyanate may be added to the chromate bath as well as or instead of to the second acid bath. The duration of treatment in the second acid bath may be 1-7 minutes. When this two-bath chroming process is used, the alkaline neutralizing treatment may be omitted, but such treatment is desirable when the two-bath procedure is used for oxidizing the leuco vat dyestuffs. These latter may be oxidized by sodium chlorate and ammonium vanadate instead of chromate. Wetting agents may be present in the rinsing and neutralizing baths. Examples are given of the process of the invention. U.S.A. Specification 2,387,200 is referred to. According to the Specification as open to inspection under Sect. 91, the process may be applied to other animal fibres, e.g. silk, and to other fibres having similar dyeing properties, e.g. artificial casein fibres and animalized cellulose. The Specification is not limited to treatment at atmospheric pressure. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH637665X | 1946-06-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB637665A true GB637665A (en) | 1950-05-24 |
Family
ID=4525200
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB17041/47A Expired GB637665A (en) | 1946-06-28 | 1947-06-27 | Process for dyeing wool |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE474136A (en) |
DE (1) | DE849094C (en) |
FR (1) | FR948962A (en) |
GB (1) | GB637665A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5845273A (en) * | 1981-09-10 | 1983-03-16 | Canon Inc | Recording solution |
-
0
- BE BE474136D patent/BE474136A/xx unknown
-
1947
- 1947-06-24 FR FR948962D patent/FR948962A/en not_active Expired
- 1947-06-27 GB GB17041/47A patent/GB637665A/en not_active Expired
-
1949
- 1949-02-28 DE DEP35300D patent/DE849094C/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
BE474136A (en) | |
FR948962A (en) | 1949-08-17 |
DE849094C (en) | 1952-09-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB453701A (en) | Improvements in and relating to the treatment of fibres or fibrous materials containing keratin | |
GB1007752A (en) | ||
US1398357A (en) | Dyeing fibers, threads, or fabrics | |
GB637665A (en) | Process for dyeing wool | |
US2552404A (en) | Process for dyeing animal and other fibers having similar properties | |
US2091683A (en) | Chrome tanning | |
GB540822A (en) | Process for improving the fastness of direct dyeings on cellulose fibres | |
GB536104A (en) | Improvements in or relating to the chemical treatment of artificial fibres made of proteins | |
GB391773A (en) | Improvements in the fixation of metal compounds on textile materials | |
US2618529A (en) | Application of leuco esters of vat dyestuffs on animal fibers using urea and an acid | |
GB531751A (en) | A process for improving the properties of cellulosic fibres or materials containing them | |
GB496277A (en) | A process for the treatment of artificial fibres obtained from casein | |
GB565675A (en) | Improvements in and relating to the manufacture and use of new textile assistants | |
US421847A (en) | Carl wachendorff | |
GB586020A (en) | Improvements relating to the anti-shrink treatment of materials consisting wholly orpartly of wool or like animal fibres | |
US2421131A (en) | Development of chromed dyes on nylon by steaming under pressure | |
GB662795A (en) | Improvements in or relating to processes for treating wool | |
GB430993A (en) | Improvements relating to delustred artificial silks | |
GB783622A (en) | Process for potting dyed wool | |
JPH0219578A (en) | Dyeing of natural or synthetic polyamide | |
GB588454A (en) | Improvements in or relating to the dyeing of wool | |
JPH0116957B2 (en) | ||
GB603154A (en) | Process for improving the fastness to light of dyeings or prints produced with vat dyestuffs or leuco ester salts thereof on fibres, fabrics, films and like-shaped structures composed of superpolyamides or superpolyurethanes | |
GB570572A (en) | Improvements in or relating to methods of hardening and tanning artificial fibres made of albuminous substance | |
GB572778A (en) | Improvements in and relating to the dyeing of alginate fibres |