US1717792A - Dyeing of fabric - Google Patents
Dyeing of fabric Download PDFInfo
- Publication number
- US1717792A US1717792A US268076A US26807628A US1717792A US 1717792 A US1717792 A US 1717792A US 268076 A US268076 A US 268076A US 26807628 A US26807628 A US 26807628A US 1717792 A US1717792 A US 1717792A
- Authority
- US
- United States
- Prior art keywords
- colour
- fabric
- dyeing
- solution
- stripping
- 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 - Lifetime
Links
- 239000004744 fabric Substances 0.000 title description 13
- 238000004043 dyeing Methods 0.000 title description 2
- 238000000034 method Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 9
- 239000003153 chemical reaction reagent Substances 0.000 description 5
- 239000003086 colorant Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 239000000975 dye Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 2
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 2
- 239000011280 coal tar Substances 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000004289 sodium hydrogen sulphite Substances 0.000 description 2
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005282 brightening Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- WBHQBSYUUJJSRZ-UHFFFAOYSA-M sodium bisulfate Chemical compound [Na+].OS([O-])(=O)=O WBHQBSYUUJJSRZ-UHFFFAOYSA-M 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
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
Description
Patented June 18, 1929.
UNITED STATES PATENT OFFICE.
GEORGE FREEMAN LLOYD, 0F BRIGHTON, VICTORIA, AUSTRALIA, ASSIGNOR T0 SPEC- TRUM DYES PROPRIETARY LIMITED, OF MELBOURNE, S.
PAN Y OF VICTORIA.
C. 4, AUSTRALIA A COM- DYEING OF FABRIC.
-No Drawing. Application filed. April 6, 1928, Serial No. 268,076, and in Australia February 6, 1928.
This invention relates to the treatment of dyed fabrics and its object is to enable the colour of a dyed fabric to be transformed to a lighter colour. The word colour is used herein in its wide sense to include a shade of colour.
In the past it has been known to strip dark colours from fabrics and, after this complete removal of the colours dyed thereon, to redye the fabrics to the particular colour desired.
I have found that, instead of completely stripping the colour from the fabric, it is possible to produce selectively any one of a range of intermediate lighter colours by a controlled semi-stripping process in which the reduction of the colour'is regulated by the control of the temperature as well as by selection of the proportions of the reagents.
These temperatures and proportions are predetermined by test for each material to produce the particular colour selected out of the range available. Colours not in the available range may be obtained by transforming the darker colour to a lighter colour approximating that desired and then obtaining the exact colour by a slight amount of dyeing.
The stripping agents employed in this process and the proportions in which they are used are selected so that the action proceeds slowly. This facilitates the controlling of the process so that by exact selection of the concentrations of the reagents and of the temperatures a uniform end point can be predetermined for'the production of the desired colour with an. exceedingly level finish.
As the dyes which are to be converted and the materials to be treated vary considerably in their nature, the reagents used and their proportions must be varied. Thus, to treat aniline dyes on fabrics formed of cotton, cotton unions (with wool or silk), or silk. the material is treated in a wooden vat which contains a sheet of perforated zinc, the material being kept out of actual contact with the zinc by a perforated false bottom. Cold water is placed in the vat, before the material is inserted. in sufiicient quantity to cover the material and 1% (one per cent) of sodium bisulphite (Nail-I80 is then added. The material is thoroughly saturated with the solution and is next lifted out of the solution either by rolling it up on a winch to either the first or the second solution,
the function of the coal tar naphtha being to promote the penetration of the treated fabric by the reagent, and the brightening of the shade of the dye under conversion. This second solution is then added to the first solution in the vat in the proportion of about 1 gallon of second solution to every 25 gal lens of first solution contained in the vat. The temperature is then raised to approximately 60 C. and the fabric is then returned. to the vat'and kept in motion. The liquor in the vat is then raised gradually to the particular temperature which has been determined beforehand, by testing, to correspond in the particular colour desired. In this testing a small piece of the material is treated by equivalent processes in the laboratory under conditions estimated to be correct, and, if the desired colour is not produced, the conditions are modified to the necessary extent as determined by further trial and the whole fabric is then treated under the conditions thus determined. The stopping of the process sharply at the desired end point with a level colour is facilitated in a remarkable degree b the addition of about 2% (two percent) of 30% (thirty per cent) acetic acid or 5% cial solution of sodium bisulphate. This step is a safeguard which enables the action to be stopped at the correct end point even (live per cent) of commer- 9o if the control of the process is otherwise carelessly effected. The material isthenv .washed out thoroughly in a 5% I claim: dyed fabric down to any preselected point 1. A rocess of lightening the colour of a on the available range of colour consisting dyed fa bric down to any reselected point in subjecting the fabric to an incomplete on the available range of 00 our consisting in stripping process, controlling the stripping 6 subjecting the fabric to a uniformly and process by regulating the concentration an 1 selectively controlled semi-stripping process temperature of the stripping liquor, and with water containing the products of the finally fixing the resultant colour by addireaction of sodium bisulphite with zinc, with tion of a fixing reagent. the addition of coal tar naphtha. In testimon whereof I aflix my signature. 10 2. A process of lightening the colour of a GEO GE FREEMAN LLOYD.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU1717792X | 1928-02-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
US1717792A true US1717792A (en) | 1929-06-18 |
Family
ID=3837440
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US268076A Expired - Lifetime US1717792A (en) | 1928-02-06 | 1928-04-06 | Dyeing of fabric |
Country Status (1)
Country | Link |
---|---|
US (1) | US1717792A (en) |
-
1928
- 1928-04-06 US US268076A patent/US1717792A/en not_active Expired - Lifetime
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