GB400239A - Improvements in stripping dyed textiles - Google Patents
Improvements in stripping dyed textilesInfo
- Publication number
- GB400239A GB400239A GB8238/32A GB823832A GB400239A GB 400239 A GB400239 A GB 400239A GB 8238/32 A GB8238/32 A GB 8238/32A GB 823832 A GB823832 A GB 823832A GB 400239 A GB400239 A GB 400239A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bromide
- acid
- fibre
- dyed
- treated
- 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
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/13—Fugitive dyeing or stripping dyes
- D06P5/138—Fugitive dyeing or stripping dyes fugitive dyeing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S516/00—Colloid systems and wetting agents; subcombinations thereof; processes of
- Y10S516/01—Wetting, emulsifying, dispersing, or stabilizing agents
- Y10S516/07—Organic amine, amide, or n-base containing
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Coloring (AREA)
Abstract
Dyeings produced by the combination on the fibre of arylamides of 2 : 3-oxynaphthoic acid with suitable diazo compounds are stripped by treatment of the dyed materials with a reducing liquor containing an amine, amine salt or quaternary ammonium salt carrying a radical which comprises a straight or branched carbon chain of not less than ten carbon atoms. The liquor may be weakly alkaline, neutral or weakly acid, but is preferably acid when a quaternary ammonium salt is used or when dyed wool, silk or other animal fibre is treated. Vegetable fibre may also be treated with a liquor slightly acid, but may require a supplementary chlorine treatment to improve the effect. Animal fibres may require a supplementary peroxide treatment. Specified amines and amine salts are b -diethylaminoethyloleylamide or its acetate or hydrochloride, and heptadecylamine or its hydrochloride. Specified quaternary ammonium salts are octadecylpyridinium bromide, cetylpyridinium bromide (cf. Specification 379,396), cetylpyridinium chloride (cf. Specification 392,763), octadecyltrimethylammonium iodide, cetyltrimethylammonium bromide, cetyltriethylammonium bromide, cetyltrimethylammonium iodide, p-stearoamidophenyltrimethylammonium sulphate, b -stearoamidoethyldiethylamine methosulphate (cf. Specification 294,582, [Class 2 (iii), Dyes &c.],) and b -hydroxyethyl-N-octadecylmorpholinium bromide. The following examples are specified: (1) Cotton, dyed with the dyestuff 4-chloro-2-toluidine --> (on the fibre) the 4-bromo-o-anisidide of 2 : 3-oxynaphthoic acid, is treated for 10 minutes with a boiling aqueous solution containing small amounts of sodium hydrosulphite, sodium carbonate and b -hydroxyethyl-N-octadecylmorpholinium bromide; the dyeing is stripped to a pale yellow which may be cleared by a mild chlorine treatment. (2) The quaternary ammonium salt is (1) is replaced by octadecylpyridinium bromide. (3) Cotton, dyed with the dyestuff 5-chloro-2-toluidine --> (on the fibre) the 4-bromo-o-anisidide of 2 : 3-oxynaphthoic acid, is treated for 30 minutes with a boiling aqueous solution, slightly acid with acetic acid, containing small amounts of sodium formaldehydesulphoxylate and cetyltrimethylammonium bromide or cetyl pyridinium bromide; the dyeing is similarly stripped and a mild chlorine clearing treatment may be used. (4) Degummed natural silk, dyed with the dyestuff 4-chloro-2-toluidine --> (on the fibre) the 4-bromo-o-anisidide of 2 : 3-oxynaphthoic acid, is treated for 30 minutes with an aqueous solution at 90-95 DEG C., slightly acid with acetic acid, containing small amounts of sodium formaldehydesulphoxylate and cetyltrimethylammonium bromide; the dyeing is stripped to a pale yellow. (5) Cotton, dyed with the dyestuff 4-chloro-2-toluidine --> (on the fibre) the 5-chloro-2-toluidide of 2 : 3-oxynaphthoic acid is treated for 30 minutes with a boiling aqueous solution neutralized with acetic acid containing small amounts of sodium formaldehydesulphoxylate and cetyltrimethylammonium bromide; the dyeing is completely stripped. (6) Cotton, dyed with the dyestuff 3-amino-6-benzoylamino-4-methoxytoluene --> (on the fibre) the anilide of 2 : 3-oxynaphthoic acid, is treated for 1 hour with a boiling aqueous solution containing small amounts of sodium formaldehydesulphoxylate, acetic acid and b -diethylaminoethyloleylamide acetate; the dyeing is stripped to a white with a yellow tinge and may be cleared to a perfect white by treatment for 5 minutes in a mild chemick solution. Specifications 362,060 and 366,961 also are referred to. b -hydroxyethyl-N-octadecylmorpholinium bromide is obtained by reaction of b -hydroxyethylmorpholine with octadecyl bromide at 140-145 DEG C. Cetyl - trimethyl - and - triethyl - ammonium bromides and iodides are prepared by reaction of cetyl bromide or iodide with trimethylamine or triethylamine in alcoholic solution at 100 DEG C. Octadecyltrimethylammonium iodide is obtained by reaction of octadecyl iodide with trimethylamine.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8238/32A GB400239A (en) | 1932-03-19 | 1932-03-19 | Improvements in stripping dyed textiles |
US66118033 US2003928A (en) | 1932-03-19 | 1933-03-16 | Stripping and discharging dyed textiles |
DEI46787D DE605913C (en) | 1932-03-19 | 1933-03-18 | Process for removing stains with water-insoluble azo dyes |
FR752728D FR752728A (en) | 1932-03-19 | 1933-03-18 | Process for bleaching textile materials dyed with azo colors. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8238/32A GB400239A (en) | 1932-03-19 | 1932-03-19 | Improvements in stripping dyed textiles |
Publications (1)
Publication Number | Publication Date |
---|---|
GB400239A true GB400239A (en) | 1933-10-19 |
Family
ID=9848628
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8238/32A Expired GB400239A (en) | 1932-03-19 | 1932-03-19 | Improvements in stripping dyed textiles |
Country Status (4)
Country | Link |
---|---|
US (1) | US2003928A (en) |
DE (1) | DE605913C (en) |
FR (1) | FR752728A (en) |
GB (1) | GB400239A (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2549079A (en) * | 1951-04-17 | Color and stain removers for | ||
US2548914A (en) * | 1951-04-17 | Color and stain removers for | ||
US2548892A (en) * | 1951-04-17 | Color and stain removers for | ||
US2549113A (en) * | 1951-04-17 | Color and stain removers for | ||
US2587597A (en) * | 1949-07-14 | 1952-03-04 | Arkansas Company Inc | Process for removal of pigments from printed textiles and agents useful therein |
US2723178A (en) * | 1951-02-10 | 1955-11-08 | American Cyanamid Co | Method of controlling the migration of metallized dyes between dye bath and fabric |
US2769684A (en) * | 1952-12-10 | 1956-11-06 | Ciba Ltd | Process for stripping and lightening wool dyeings |
US5560805A (en) * | 1993-07-27 | 1996-10-01 | Hoechst Celanese Corporation | Enhanced decolorization of waste paper with selected amines |
US5580422A (en) * | 1993-07-27 | 1996-12-03 | Hoechst Celanese Corporation | Brightening color dyed wastepaper with a bleaching agent and a quaternary compound |
US5458737A (en) * | 1993-07-27 | 1995-10-17 | Hoechst Celanese Corporation | Quaternary compounds as brightness enhancers |
US6120554A (en) * | 1998-02-02 | 2000-09-19 | American Renewable Resources Llc | Catalyzed alkaline hydrogen peroxide bleaching of dye-containing cellulose textiles |
US20030056296A1 (en) * | 2001-09-26 | 2003-03-27 | Hirsch Gary F. | Dye removal from denim scrap with a forced circulation kier |
IT202100007712A1 (en) * | 2021-03-29 | 2022-09-29 | Soko Chimica S R L | METHOD OF BLEACHING FABRICS |
-
1932
- 1932-03-19 GB GB8238/32A patent/GB400239A/en not_active Expired
-
1933
- 1933-03-16 US US66118033 patent/US2003928A/en not_active Expired - Lifetime
- 1933-03-18 DE DEI46787D patent/DE605913C/en not_active Expired
- 1933-03-18 FR FR752728D patent/FR752728A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR752728A (en) | 1933-09-29 |
DE605913C (en) | 1934-11-20 |
US2003928A (en) | 1935-06-04 |
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