US2019124A - Stripping agent - Google Patents
Stripping agent Download PDFInfo
- Publication number
- US2019124A US2019124A US2019124DA US2019124A US 2019124 A US2019124 A US 2019124A US 2019124D A US2019124D A US 2019124DA US 2019124 A US2019124 A US 2019124A
- Authority
- US
- United States
- Prior art keywords
- colours
- parts
- dyed
- stripping
- stripped
- 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
- 239000003086 colorant Substances 0.000 description 74
- 239000000463 material Substances 0.000 description 38
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 30
- 239000004753 textile Substances 0.000 description 30
- -1 amine salt Chemical class 0.000 description 26
- RGCKGOZRHPZPFP-UHFFFAOYSA-N Alizarin Chemical compound C1=CC=C2C(=O)C3=C(O)C(O)=CC=C3C(=O)C2=C1 RGCKGOZRHPZPFP-UHFFFAOYSA-N 0.000 description 24
- 229920000742 Cotton Polymers 0.000 description 22
- 238000000034 method Methods 0.000 description 22
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 description 20
- 239000011780 sodium chloride Substances 0.000 description 20
- 239000007864 aqueous solution Substances 0.000 description 18
- 150000001412 amines Chemical class 0.000 description 16
- 125000004432 carbon atoms Chemical group C* 0.000 description 14
- 239000000126 substance Substances 0.000 description 14
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N Oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 12
- 238000004043 dyeing Methods 0.000 description 12
- JVBXVOWTABLYPX-UHFFFAOYSA-L Sodium dithionite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])=O JVBXVOWTABLYPX-UHFFFAOYSA-L 0.000 description 10
- 239000000835 fiber Substances 0.000 description 10
- 235000011121 sodium hydroxide Nutrition 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- XOAAWQZATWQOTB-UHFFFAOYSA-N Taurine Chemical compound NCCS(O)(=O)=O XOAAWQZATWQOTB-UHFFFAOYSA-N 0.000 description 8
- 239000002253 acid Substances 0.000 description 8
- 239000003513 alkali Substances 0.000 description 8
- 239000000843 powder Substances 0.000 description 8
- 150000003254 radicals Chemical class 0.000 description 8
- 239000003638 reducing agent Substances 0.000 description 8
- 239000005642 Oleic acid Substances 0.000 description 6
- QTBSBXVTEAMEQO-UHFFFAOYSA-N acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- CPELXLSAUQHCOX-UHFFFAOYSA-M bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 6
- 239000000344 soap Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N HCl Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- IPCSVZSSVZVIGE-UHFFFAOYSA-N Palmitic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 4
- 229920000297 Rayon Polymers 0.000 description 4
- SUKJFIGYRHOWBL-UHFFFAOYSA-N Sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 4
- 239000005708 Sodium hypochlorite Substances 0.000 description 4
- VXMKYRQZQXVKGB-CWWHNZPOSA-N Tannin Chemical compound O([C@H]1[C@H]([C@@H]2OC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)O[C@H]([C@H]2O)O1)O)C(=O)C1=CC(O)=C(O)C(O)=C1 VXMKYRQZQXVKGB-CWWHNZPOSA-N 0.000 description 4
- 229960003080 Taurine Drugs 0.000 description 4
- JXUKQCUPTNLTCS-UHFFFAOYSA-N Vat Green 1 Chemical compound C1=CC=C[C]2C(=O)C(C3=C45)=CC=C4C(C4=C67)=CC=C7C(=O)[C]7C=CC=CC7=C6C=C(OC)C4=C5C(OC)=CC3=C21 JXUKQCUPTNLTCS-UHFFFAOYSA-N 0.000 description 4
- JPIYZTWMUGTEHX-UHFFFAOYSA-N auramine O free base Chemical compound C1=CC(N(C)C)=CC=C1C(=N)C1=CC=C(N(C)C)C=C1 JPIYZTWMUGTEHX-UHFFFAOYSA-N 0.000 description 4
- QDYLMAYUEZBUFO-UHFFFAOYSA-N benzyl-hexadecyl-dimethylazanium Chemical compound CCCCCCCCCCCCCCCC[N+](C)(C)CC1=CC=CC=C1 QDYLMAYUEZBUFO-UHFFFAOYSA-N 0.000 description 4
- 239000000975 dye Substances 0.000 description 4
- 150000002148 esters Chemical class 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- LSNNMFCWUKXFEE-UHFFFAOYSA-N sulfonic acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 4
- 230000000576 supplementary Effects 0.000 description 4
- 239000001648 tannin Substances 0.000 description 4
- 235000018553 tannin Nutrition 0.000 description 4
- 229920001864 tannin Polymers 0.000 description 4
- JDASKPRUFDKACZ-UHFFFAOYSA-M 1-octadecylpyridin-1-ium;bromide Chemical compound [Br-].CCCCCCCCCCCCCCCCCC[N+]1=CC=CC=C1 JDASKPRUFDKACZ-UHFFFAOYSA-M 0.000 description 2
- USELROYQEOKDDQ-UHFFFAOYSA-N CCN(CC)CC[NH-] Chemical compound CCN(CC)CC[NH-] USELROYQEOKDDQ-UHFFFAOYSA-N 0.000 description 2
- 206010022114 Injury Diseases 0.000 description 2
- 235000021314 Palmitic acid Nutrition 0.000 description 2
- PYWVYCXTNDRMGF-UHFFFAOYSA-N Rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 2
- 210000002268 Wool Anatomy 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 2
- WJGAPUXHSQQWQF-UHFFFAOYSA-L acetate;chloride Chemical compound [Cl-].CC([O-])=O WJGAPUXHSQQWQF-UHFFFAOYSA-L 0.000 description 2
- 125000001931 aliphatic group Chemical group 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 150000001408 amides Chemical class 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- JXLHNMVSKXFWAO-UHFFFAOYSA-N azane;7-fluoro-2,1,3-benzoxadiazole-4-sulfonic acid Chemical compound N.OS(=O)(=O)C1=CC=C(F)C2=NON=C12 JXLHNMVSKXFWAO-UHFFFAOYSA-N 0.000 description 2
- 229960000228 cetalkonium chloride Drugs 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- ISXSFOPKZQZDAO-UHFFFAOYSA-N formaldehyde;sodium Chemical compound [Na].O=C ISXSFOPKZQZDAO-UHFFFAOYSA-N 0.000 description 2
- KAJZYANLDWUIES-UHFFFAOYSA-N heptadecan-1-amine Chemical compound CCCCCCCCCCCCCCCCCN KAJZYANLDWUIES-UHFFFAOYSA-N 0.000 description 2
- 150000007522 mineralic acids Chemical class 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 150000002978 peroxides Chemical class 0.000 description 2
- KEAYESYHFKHZAL-UHFFFAOYSA-N sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- JADVWWSKYZXRGX-UHFFFAOYSA-M thioflavin T Chemical compound [Cl-].C1=CC(N(C)C)=CC=C1C1=[N+](C)C2=CC=C(C)C=C2S1 JADVWWSKYZXRGX-UHFFFAOYSA-M 0.000 description 2
- 239000000984 vat dye Substances 0.000 description 2
- 235000013311 vegetables Nutrition 0.000 description 2
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
- D06P5/137—Fugitive dyeing or stripping dyes with other compounds
Definitions
- the present invention relates to the stripping of textile fibres dyed'with alizarine colours, applied by the usual mordant method, basic colours and vat colours as herein defined.
- the invention has for its object the provision of a. technically advantageous, economical process of stripping, particularly adapted to the entire or substantially entire removal of solid shades provided by alizarine colours, dyed by the usual mordant methods, basic colours and vat colours.
- This object is accomplished according to the invention by treating textile material dyed with the said colours in a liquor containing an amine or amine salt, preferably a quaternary ammonium salt, one radical in which comprises a straight or branched carbon chain of not less than 10 carbon atoms, and also containing where advantageous one or more of the following additional substances, namely, acid, alkali, reducing agent, soluble soap and a sulphonic acid or sulfuric ester as herein defined.
- an amine or amine salt preferably a quaternary ammonium salt, one radical in which comprises a straight or branched carbon chain of not less than 10 carbon atoms, and also containing where advantageous one or more of the following additional substances, namely, acid, alkali, reducing agent, soluble soap and a sulphonic acid or sulfuric ester as herein defined.
- the additional substances may be added or not according to the dye and the textile materials from which it is to be stripped.
- basic colours it is usually sufiicient to heat in an aqueous liquor with the amine salt or with the amine in a medium containing a little acid.
- alizarine colours a reducing agent is usually necessary to give a bath which will reduce the colours.
- vat colours an alkali and reducing agent, preferably together with a soluble soap, or a sulphonic acid or sulfuric ester as hereinafter defined is used.
- the acid may be mineral or organic acid.
- the fibre is stripped white or slightly tinged. In the latter case, for vegetable fibre a supplementary chlorine or chemic treatment may be applied further to improve the ground. In the case of animal fibre a supplementary peroxide treatment is sometimes beneficial.
- Suitable amines or amine salts are for example p-di-ethylamino-ethyloleyl amide or its acetate or hydrochloride, heptadecylamine or its hydrochloride (Hofiman, Berichte, 1882, 15, 774) and suitable quaternary ammonium salts are, for example, 6
- Example 1 A dyeing of Turkey red on cotton is treated for 30 minutes at the boil with 40 times its weight of an aqueous solution prepared by adding 4 parts of caustic soda, 3.75 parts oi sodium hydrosulphite and 2 parts of trimethylcetylammonium bromide to 1000 parts ofwater. The material is stripped to a pale brown shade which can be cleared to a white by treatment ior 15-30 minutes in /2 tw. sodium hypoch'lorite.”
- dyed on tannin rno'rdanted cotton in the usual manner is treated for hour at the boil in a 0.17% aqueous solution of octadecylpyridinium bromide. The dyestufl is completely removed from the fibre.
- Example 3 --A 1% shade of Rhodamine BGBS (Journal of Soc. 0! Dyers and Colourists, 1933, vol. 40, page 110) dyed on tannin mordanted cotton in the usual way is treated for 95 hour in 0.17% aqueous solution of trimethylcetylammonium bromide. The cotton is stripped to a very pale pink shade.
- Example 4A As Example 2 but a 1% dyeing oi Magenta P (Colour Index No. 677) is treated in a 0.17% aqueous solution of the acetate of the asymmetrical diethylaminoethylamide of oleic acid. The dyeing is stripped to a very weak bluish red shade.
- Example 5 A 1% shade of Acronol yellow T (Colour Index No. 815) dyed on silk in the usual manner is treated for hour at the boil in a 0.17% aqueous solution of trimethylcetylammonlum bromide. The silk is stripped to a very pale yellow shade. v
- Example 6 A 1% shade of Auramine 0 (Colour Index No. 655) on silk is treated as in Example 5. The dye is almost completely removed from the'iibre.
- Example 7 Cotton yarn dyed with 10% Caledon yellow (3 (Colour Index No. 1118) is treated for minutes at 95 C. with 40 times its weight of an aqueous solution prepared by adding 5 parts of caustic soda, 4 parts of sodium hydrosulphite (conc. powder) and 2 parts of benzyldimethylcetylammonium chloride to 1000 parts or water.
- the yarn is stripped to a very pale yellow shade.
- Example 8 --Cotton yarn dyed with 10% Durlndone blue 4BC (Colour Index No. 1184) is treated as in Example '7, but using benzyldimethvlcetylammonium sulphonate instead of the quaternary ammonium salt there mentioned.
- the yarn is stripped to a weak blue shade.
- Example 9 Cotton yarn dyed with 15% Caledon blue R (Colour Index No. 1106) is treated as in Example 'l but using trimethylcetylamgclmium bromide as the quaternary ammonium The yarn is stripped to a pale blue shade, which, ii desired, can be stripped white by treatment for 1 hour in 1 tw. sodium hypochlorite solution.
- Example 10 Cotton yarn dyed with 10% Caledon jade green paste (Colour Index No. 1101) is treated for 30 minutes at 90-95" C. with 40 times its weight of an aqueous solution prepared by adding 5 parts of caustic soda, 4 parts of sodium hydrosulphite (cone. powder), 0.5 parts of trimethylcetylammonium bromide and 0.4 parts of oleic acid, to 1000 parts or water.
- the yarn is stripped to a weak green shade.
- Example 11 Cotton piece goods dyed with 3% pa-naphthothio-indigo are treated for 30 minutes at 90-95 C. with 40 times their weight of an aqueous solution prepared by adding 5 parts of caustic soda, 4 parts of sodium hydrosulphite (conc. powder), 1 part of trlmethylcetylammonium bromide, 0.8 parts 01' oleic ester of taurine to 1000 parts water.
- the material is stripped to a white.
- Example 12 -Cotton yarn dyed with 20% Caledon yellow 3G (Colour Index No. 1132) is treated for 30 minutes at 90-95 C. with 30 times its weight oi an aqueous solution prepared by adding 2.0 parts of caustic soda, 3.33 parts of sodium hydrosulphite (conc. powder) 0,66 parts 01' trimethylcetylammonium bromide and 0.40
- the yarn is squeezed and treated for 15 minutes in tw. sodium hypochlorite solution.
- Example 13 A 20% dyeing of Durindone pink Fl". Colour Index No. 1211 on a cotton piece is treated as in Example 12. The material is 10 stripped to a very'weak pink shade.
- Example 14 A 20% dyeing oi Caledon Jade green (Colour Index No. 1101) on viscose yarn is treated as in Example 6.
- the material is stripped to a weak green shade.
- Example 15.-A 20% dyeing oi. Caledon blue RC (Colour Index No. 1114) on viscose yarn is treated as in Example 12.
- the material is stripped to a weak blue shade.
- Example 16 -Wool dyed a full red with alisarine on an aluminium mordant is treated for 20 minutes at the boil in a solution containing 2 parts oi! cetyltrimethylammonium bromide, 2 parts 0! acetic acid (30%) and 4 parts of sodium formaldehyde sulioxylate, in 1000 parts of water. 25
- a process for stripping textile materials dyed with colours selected from the group consisting of alizarine colours, basic colours and vat colours which comprises treating them with a liquor containing a substance selected from the group consisting of amines and amine salts having an aliphatic radical which contains not less than 10 carbon atoms.
- a process for stripping textile materials dyed with colours selected from the group consisting of alizarin'e colours, basic colours and vat colours which comprises treating them with a liquor containing a cetyltrialkylammonium salt.
- a process for stripping textile materials dyed with colours selected from the group consisting of alizarine colours, basic colours and vat colours which comprises treating them with u a liquor containing cetyltrimethylammonium bromide.
- a process for stripping textile materials dyed with colours selected from the group consistsing or alizarine colours, basic colours and o vat colours which comprises treating them with a hot dilute liquor containing cetyltrimethylammonium bromide.
- a process for stripping textile materials dyed with vat colours which comprises. treating them with a chemically reducing liquor containing a substance selected from the group consisting of amines and amine salts having an allphatic radical which contains not less than 10 carbon atoms.
- a process for stripping textile materials with vat colours which comprises treating them in alkaline chemically reducing liquor containing cetyltrimethylammonium bromide and a soluble soap. .5
- a process for stripping materials dyed with vat colours which comprises treating them in alkaline chemically reducing liquor containing cetyltrimethylammonium bromide and a substance selected from the group consisting of 1 RSOJH and ROSOSH where R. is an aliphatic radical which contains not less than 10 carbon atoms.
- a process for stripping textile materials dyed with aiiaarine colours which comprises ya treating them with a chemically reducing liquor dyed with alizarine colours which comprises containing a substance selected from the group treating them with a chemically reducing liquor consisting of amines and amine salts having an containing cetyltrimethylammonium bromide.
- aliphatic radical which contains not less than 10 5 carbon atoms. JOHN GWYNANT EVANS.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Coloring (AREA)
Description
Patented Oct. 29, 1935 UNITED STATES STRIPPING AGENT John Gwynant Evans and Leslie Gordon Lawrie,
Blackley, Manchester, Imperial Chemical ration of Great Britain England,
' Industries Limited, a corpo- No Drawing. Application April 2, 1934, Serial No.
9 Claims.
In British Specification No. 400,239 there is described a process for the stripping of textiles dyed with azoic colours comprising the treatment of the dyed materials with a reducing liquor containing an amine or amine salt, one radical in which comprises a straight or branched carbon chain of not less than 10 carbon atoms.
The present invention relates to the stripping of textile fibres dyed'with alizarine colours, applied by the usual mordant method, basic colours and vat colours as herein defined.
The invention has for its object the provision of a. technically advantageous, economical process of stripping, particularly adapted to the entire or substantially entire removal of solid shades provided by alizarine colours, dyed by the usual mordant methods, basic colours and vat colours.
This object is accomplished according to the invention by treating textile material dyed with the said colours in a liquor containing an amine or amine salt, preferably a quaternary ammonium salt, one radical in which comprises a straight or branched carbon chain of not less than 10 carbon atoms, and also containing where advantageous one or more of the following additional substances, namely, acid, alkali, reducing agent, soluble soap and a sulphonic acid or sulfuric ester as herein defined.
The additional substances may be added or not according to the dye and the textile materials from which it is to be stripped. With basic colours it is usually sufiicient to heat in an aqueous liquor with the amine salt or with the amine in a medium containing a little acid. With alizarine colours a reducing agent is usually necessary to give a bath which will reduce the colours. With vat colours an alkali and reducing agent, preferably together with a soluble soap, or a sulphonic acid or sulfuric ester as hereinafter defined is used. When stripping wool and silk and other animal fibres some risk of injury to the fibre is present if alkali is used so alkali is preferably avoided. The acid may be mineral or organic acid. The fibre is stripped white or slightly tinged. In the latter case, for vegetable fibre a supplementary chlorine or chemic treatment may be applied further to improve the ground. In the case of animal fibre a supplementary peroxide treatment is sometimes beneficial.
In stripping in the presence of a reducing agent the amine or amine salts referred to above as well as increasing this degree of stripping also retard the rate of re-oxidation of the reduced dyeings thus giving more even stripped shades, where stripping white is not required,
In Great Britain April 7, 1933 Suitable amines or amine salts are for example p-di-ethylamino-ethyloleyl amide or its acetate or hydrochloride, heptadecylamine or its hydrochloride (Hofiman, Berichte, 1882, 15, 774) and suitable quaternary ammonium salts are, for example, 6
soluble salt thereof, where R is an aliphatic satu- 25 rated or unsaturated radical containing a. carbon chain of not less than 10 carbon atoms. Advantages of our invention are that it provides a ready means of stripping Turkey red and other alizarine mordant colours and vat dyes which are normally very difiicult to strip: that it provides a very simple means of stripping basic colours and that all these colours, together with azoic colours can be stripped by the same liquor. When we speak of dyed textile materials we include also printed textile material but we do not include discharging, that is to say the local removal of colour for the purpose of making coloured patterns.
The following examples in which parts are by weight illustrate but do not limit the invention. Example 1.A dyeing of Turkey red on cotton is treated for 30 minutes at the boil with 40 times its weight of an aqueous solution prepared by adding 4 parts of caustic soda, 3.75 parts oi sodium hydrosulphite and 2 parts of trimethylcetylammonium bromide to 1000 parts ofwater. The material is stripped to a pale brown shade which can be cleared to a white by treatment ior 15-30 minutes in /2 tw. sodium hypoch'lorite." Example 2.-A 1% shade of Auramine Q (Colour Index No. 655) dyed on tannin rno'rdanted cotton in the usual manner is treated for hour at the boil in a 0.17% aqueous solution of octadecylpyridinium bromide. The dyestufl is completely removed from the fibre.
Example 3.--A 1% shade of Rhodamine BGBS (Journal of Soc. 0! Dyers and Colourists, 1933, vol. 40, page 110) dyed on tannin mordanted cotton in the usual way is treated for 95 hour in 0.17% aqueous solution of trimethylcetylammonium bromide. The cotton is stripped to a very pale pink shade.
Example 4.As Example 2 but a 1% dyeing oi Magenta P (Colour Index No. 677) is treated in a 0.17% aqueous solution of the acetate of the asymmetrical diethylaminoethylamide of oleic acid. The dyeing is stripped to a very weak bluish red shade.
Example 5.-A 1% shade of Acronol yellow T (Colour Index No. 815) dyed on silk in the usual manner is treated for hour at the boil in a 0.17% aqueous solution of trimethylcetylammonlum bromide. The silk is stripped to a very pale yellow shade. v
Example 6.-A 1% shade of Auramine 0 (Colour Index No. 655) on silk is treated as in Example 5. The dye is almost completely removed from the'iibre.
Example 7.Cotton yarn dyed with 10% Caledon yellow (3 (Colour Index No. 1118) is treated for minutes at 95 C. with 40 times its weight of an aqueous solution prepared by adding 5 parts of caustic soda, 4 parts of sodium hydrosulphite (conc. powder) and 2 parts of benzyldimethylcetylammonium chloride to 1000 parts or water.
The yarn is stripped to a very pale yellow shade.
Example 8.--Cotton yarn dyed with 10% Durlndone blue 4BC (Colour Index No. 1184) is treated as in Example '7, but using benzyldimethvlcetylammonium sulphonate instead of the quaternary ammonium salt there mentioned.
The yarn is stripped to a weak blue shade.
Example 9.Cotton yarn dyed with 15% Caledon blue R (Colour Index No. 1106) is treated as in Example 'l but using trimethylcetylamgclmium bromide as the quaternary ammonium The yarn is stripped to a pale blue shade, which, ii desired, can be stripped white by treatment for 1 hour in 1 tw. sodium hypochlorite solution.
Example 10.-Cotton yarn dyed with 10% Caledon jade green paste (Colour Index No. 1101) is treated for 30 minutes at 90-95" C. with 40 times its weight of an aqueous solution prepared by adding 5 parts of caustic soda, 4 parts of sodium hydrosulphite (cone. powder), 0.5 parts of trimethylcetylammonium bromide and 0.4 parts of oleic acid, to 1000 parts or water.
The yarn is stripped to a weak green shade.
A similar effect is obtained by substituting textile flakes or cetylsodium sulphate, or the oleic ester oi! taurine for the oleic acid.
Example 11.Cotton piece goods dyed with 3% pa-naphthothio-indigo are treated for 30 minutes at 90-95 C. with 40 times their weight of an aqueous solution prepared by adding 5 parts of caustic soda, 4 parts of sodium hydrosulphite (conc. powder), 1 part of trlmethylcetylammonium bromide, 0.8 parts 01' oleic ester of taurine to 1000 parts water.
The material is stripped to a white.
Example 12.-Cotton yarn dyed with 20% Caledon yellow 3G (Colour Index No. 1132) is treated for 30 minutes at 90-95 C. with 30 times its weight oi an aqueous solution prepared by adding 2.0 parts of caustic soda, 3.33 parts of sodium hydrosulphite (conc. powder) 0,66 parts 01' trimethylcetylammonium bromide and 0.40
parts 01' palmitic acid to 1000 parts or water.
The yarn is squeezed and treated for 15 minutes in tw. sodium hypochlorite solution.
iollowed by a souring treatment with A tw. hy- 6 drochloric acid. The yarn is stripped to a very weak yellow shade.
Example 13.-A 20% dyeing of Durindone pink Fl". Colour Index No. 1211 on a cotton piece is treated as in Example 12. The material is 10 stripped to a very'weak pink shade.
Example 14.-A 20% dyeing oi Caledon Jade green (Colour Index No. 1101) on viscose yarn is treated as in Example 6.
The material is stripped to a weak green shade. 15
Example 15.-A 20% dyeing oi. Caledon blue RC (Colour Index No. 1114) on viscose yarn is treated as in Example 12.
The material is stripped to a weak blue shade.
Example 16.-Wool dyed a full red with alisarine on an aluminium mordant is treated for 20 minutes at the boil in a solution containing 2 parts oi! cetyltrimethylammonium bromide, 2 parts 0! acetic acid (30%) and 4 parts of sodium formaldehyde sulioxylate, in 1000 parts of water. 25
It is stripped to a very pale pink colour.
We claim:
1. A process for stripping textile materials dyed with colours selected from the group consisting of alizarine colours, basic colours and vat colours which comprises treating them with a liquor containing a substance selected from the group consisting of amines and amine salts having an aliphatic radical which contains not less than 10 carbon atoms. a
2. A process for stripping textile materials dyed with colours selected from the group consisting of alizarin'e colours, basic colours and vat colours which comprises treating them with a liquor containing a cetyltrialkylammonium salt.
3. A process for stripping textile materials dyed with colours selected from the group consisting of alizarine colours, basic colours and vat colours which comprises treating them with u a liquor containing cetyltrimethylammonium bromide.
4. A process for stripping textile materials dyed with colours selected from the group consistsing or alizarine colours, basic colours and o vat colours which comprises treating them with a hot dilute liquor containing cetyltrimethylammonium bromide.
5. A process for stripping textile materials dyed with vat colours which comprises. treating them with a chemically reducing liquor containing a substance selected from the group consisting of amines and amine salts having an allphatic radical which contains not less than 10 carbon atoms.
6. A process for stripping textile materials with vat colours which comprises treating them in alkaline chemically reducing liquor containing cetyltrimethylammonium bromide and a soluble soap. .5
. 7. A process for stripping materials dyed with vat colours which comprises treating them in alkaline chemically reducing liquor containing cetyltrimethylammonium bromide and a substance selected from the group consisting of 1 RSOJH and ROSOSH where R. is an aliphatic radical which contains not less than 10 carbon atoms.
8. A process for stripping textile materials dyed with aiiaarine colours which comprises ya treating them with a chemically reducing liquor dyed with alizarine colours which comprises containing a substance selected from the group treating them with a chemically reducing liquor consisting of amines and amine salts having an containing cetyltrimethylammonium bromide. aliphatic radical which contains not less than 10 5 carbon atoms. JOHN GWYNANT EVANS.
9. A process for stripping textile materials LESLIE GORDON LAWRIE.
Publications (1)
Publication Number | Publication Date |
---|---|
US2019124A true US2019124A (en) | 1935-10-29 |
Family
ID=3427444
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US2019124D Expired - Lifetime US2019124A (en) | Stripping agent |
Country Status (1)
Country | Link |
---|---|
US (1) | US2019124A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2508714A (en) * | 1946-10-07 | 1950-05-23 | Harris Res Lab | Process of treating keratinous materials |
US2525770A (en) * | 1946-05-17 | 1950-10-17 | Arkansas Company Inc | Baths for stripping vat-dyed textile materials and agents useful therein |
US2574243A (en) * | 1945-05-15 | 1951-11-06 | Ilford Ltd | Treatment of colored colloid layers |
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 |
US3280039A (en) * | 1962-12-19 | 1966-10-18 | Pennsalt Chemicals Corp | Aqueous bleaching solution |
US5458737A (en) * | 1993-07-27 | 1995-10-17 | Hoechst Celanese Corporation | Quaternary compounds as brightness enhancers |
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 |
-
0
- US US2019124D patent/US2019124A/en not_active Expired - Lifetime
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2574243A (en) * | 1945-05-15 | 1951-11-06 | Ilford Ltd | Treatment of colored colloid layers |
US2525770A (en) * | 1946-05-17 | 1950-10-17 | Arkansas Company Inc | Baths for stripping vat-dyed textile materials and agents useful therein |
US2508714A (en) * | 1946-10-07 | 1950-05-23 | Harris Res Lab | Process of treating keratinous materials |
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 |
US3280039A (en) * | 1962-12-19 | 1966-10-18 | Pennsalt Chemicals Corp | Aqueous bleaching solution |
US5458737A (en) * | 1993-07-27 | 1995-10-17 | Hoechst Celanese Corporation | Quaternary compounds as brightness enhancers |
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 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2019124A (en) | Stripping agent | |
US2003928A (en) | Stripping and discharging dyed textiles | |
US2164930A (en) | Process for reducing vat dyestuffs | |
GB479867A (en) | Process for the colouration of textile materials | |
US2302753A (en) | Printing of ester salts of leuco | |
US1990852A (en) | Process of producing prints or dis | |
US2052612A (en) | Stripping dyed textiles | |
US2528323A (en) | Method of treating textile mate | |
US2338639A (en) | Manufacture of azo dyestuffs | |
US2206535A (en) | Stripping dyed textile | |
US2448515A (en) | Dyed cellulose ethers and dyeing of fabrics therewith | |
US2024038A (en) | Process for discharging dyeings on wool | |
US1832425A (en) | Vat dyeing | |
US2217696A (en) | Resist color printing | |
US2061621A (en) | Color stripping process | |
DE1262957C2 (en) | Process for the production of water-insoluble azo dyes on textile material made of cellulose or protein fibers | |
US2008966A (en) | Process and composition for applying and fixing dyestuff | |
US2115374A (en) | Coloration of materials containing cellulose esters | |
US2069919A (en) | Printing process | |
US2333204A (en) | Discharge printing | |
US1774621A (en) | Process for producing fast dyeings and printings | |
US2182140A (en) | Process for producing reserves under dyeings of ester salts of leuco vat dyestuffs | |
US1951571A (en) | Process of preparing dyeings and printings | |
US2042194A (en) | Stripping dyeings prepared with vat dyestuffs | |
US2132846A (en) | Water-insoluble monoazo dye |