EP0531849A2 - Process for post-bleaching of coloured raw cellulose - Google Patents
Process for post-bleaching of coloured raw cellulose Download PDFInfo
- Publication number
- EP0531849A2 EP0531849A2 EP92114840A EP92114840A EP0531849A2 EP 0531849 A2 EP0531849 A2 EP 0531849A2 EP 92114840 A EP92114840 A EP 92114840A EP 92114840 A EP92114840 A EP 92114840A EP 0531849 A2 EP0531849 A2 EP 0531849A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- bleaching
- acid
- salts
- compounds
- acids
- 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.)
- Granted
Links
- 238000004061 bleaching Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims description 26
- 229920002678 cellulose Polymers 0.000 title abstract description 6
- 239000001913 cellulose Substances 0.000 title abstract description 6
- 125000002091 cationic group Chemical group 0.000 claims abstract description 11
- 239000003381 stabilizer Substances 0.000 claims abstract description 11
- 239000002736 nonionic surfactant Substances 0.000 claims abstract description 7
- 150000001875 compounds Chemical class 0.000 claims description 14
- -1 alkylamine salts Chemical class 0.000 claims description 13
- 239000002253 acid Substances 0.000 claims description 12
- 150000007513 acids Chemical class 0.000 claims description 8
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- RGHNJXZEOKUKBD-SQOUGZDYSA-N Gluconic acid Natural products OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O RGHNJXZEOKUKBD-SQOUGZDYSA-N 0.000 claims description 6
- 239000000985 reactive dye Substances 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 5
- RGHNJXZEOKUKBD-UHFFFAOYSA-N D-gluconic acid Natural products OCC(O)C(O)C(O)C(O)C(O)=O RGHNJXZEOKUKBD-UHFFFAOYSA-N 0.000 claims description 4
- 239000007844 bleaching agent Substances 0.000 claims description 4
- 229920006317 cationic polymer Polymers 0.000 claims description 4
- 239000000982 direct dye Substances 0.000 claims description 4
- 239000000174 gluconic acid Substances 0.000 claims description 4
- 235000012208 gluconic acid Nutrition 0.000 claims description 4
- 229920000768 polyamine Polymers 0.000 claims description 4
- 238000005956 quaternization reaction Methods 0.000 claims description 4
- 239000004115 Sodium Silicate Substances 0.000 claims description 3
- 229920002125 Sokalan® Polymers 0.000 claims description 3
- 238000009897 hydrogen peroxide bleaching Methods 0.000 claims description 3
- 150000003009 phosphonic acids Chemical class 0.000 claims description 3
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 3
- WXHLLJAMBQLULT-UHFFFAOYSA-N 2-[[6-[4-(2-hydroxyethyl)piperazin-1-yl]-2-methylpyrimidin-4-yl]amino]-n-(2-methyl-6-sulfanylphenyl)-1,3-thiazole-5-carboxamide;hydrate Chemical compound O.C=1C(N2CCN(CCO)CC2)=NC(C)=NC=1NC(S1)=NC=C1C(=O)NC1=C(C)C=CC=C1S WXHLLJAMBQLULT-UHFFFAOYSA-N 0.000 claims description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 2
- CKLJMWTZIZZHCS-REOHCLBHSA-N L-aspartic acid Chemical compound OC(=O)[C@@H](N)CC(O)=O CKLJMWTZIZZHCS-REOHCLBHSA-N 0.000 claims description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical class C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 2
- 125000002252 acyl group Chemical group 0.000 claims description 2
- 125000000217 alkyl group Chemical group 0.000 claims description 2
- 235000003704 aspartic acid Nutrition 0.000 claims description 2
- OQFSQFPPLPISGP-UHFFFAOYSA-N beta-carboxyaspartic acid Natural products OC(=O)C(N)C(C(O)=O)C(O)=O OQFSQFPPLPISGP-UHFFFAOYSA-N 0.000 claims description 2
- 235000013877 carbamide Nutrition 0.000 claims description 2
- 150000001767 cationic compounds Chemical class 0.000 claims description 2
- 150000002460 imidazoles Chemical class 0.000 claims description 2
- 239000000391 magnesium silicate Substances 0.000 claims description 2
- 235000012243 magnesium silicates Nutrition 0.000 claims description 2
- 150000003008 phosphonic acid esters Chemical class 0.000 claims description 2
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- 235000019351 sodium silicates Nutrition 0.000 claims description 2
- QDWYPRSFEZRKDK-UHFFFAOYSA-M sodium;sulfamate Chemical compound [Na+].NS([O-])(=O)=O QDWYPRSFEZRKDK-UHFFFAOYSA-M 0.000 claims description 2
- 239000011777 magnesium Substances 0.000 claims 1
- 229920000642 polymer Polymers 0.000 abstract description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 239000000203 mixture Substances 0.000 description 11
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical group C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 10
- 239000000975 dye Substances 0.000 description 9
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 8
- 239000000047 product Substances 0.000 description 7
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 6
- MWKFXSUHUHTGQN-UHFFFAOYSA-N decan-1-ol Chemical compound CCCCCCCCCCO MWKFXSUHUHTGQN-UHFFFAOYSA-N 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 229920000742 Cotton Polymers 0.000 description 5
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 description 5
- 239000004753 textile Substances 0.000 description 5
- SZHQPBJEOCHCKM-UHFFFAOYSA-N 2-phosphonobutane-1,2,4-tricarboxylic acid Chemical compound OC(=O)CCC(P(O)(O)=O)(C(O)=O)CC(O)=O SZHQPBJEOCHCKM-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- DBVJJBKOTRCVKF-UHFFFAOYSA-N Etidronic acid Chemical compound OP(=O)(O)C(O)(C)P(O)(O)=O DBVJJBKOTRCVKF-UHFFFAOYSA-N 0.000 description 4
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000002657 fibrous material Substances 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 3
- 230000000740 bleeding effect Effects 0.000 description 3
- 239000007795 chemical reaction product Substances 0.000 description 3
- 238000004043 dyeing Methods 0.000 description 3
- 150000002191 fatty alcohols Chemical class 0.000 description 3
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 3
- 235000019341 magnesium sulphate Nutrition 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 125000004178 (C1-C4) alkyl group Chemical group 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- 125000002853 C1-C4 hydroxyalkyl group Chemical group 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000004480 active ingredient Substances 0.000 description 2
- 239000003599 detergent Substances 0.000 description 2
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- 229940090960 diethylenetriamine pentamethylene phosphonic acid Drugs 0.000 description 2
- LQZZUXJYWNFBMV-UHFFFAOYSA-N dodecan-1-ol Chemical compound CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 description 2
- DUYCTCQXNHFCSJ-UHFFFAOYSA-N dtpmp Chemical compound OP(=O)(O)CN(CP(O)(O)=O)CCN(CP(O)(=O)O)CCN(CP(O)(O)=O)CP(O)(O)=O DUYCTCQXNHFCSJ-UHFFFAOYSA-N 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- 235000005985 organic acids Nutrition 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 2
- 125000003837 (C1-C20) alkyl group Chemical group 0.000 description 1
- YCPXWRQRBFJBPZ-UHFFFAOYSA-N 5-sulfosalicylic acid Chemical compound OC(=O)C1=CC(S(O)(=O)=O)=CC=C1O YCPXWRQRBFJBPZ-UHFFFAOYSA-N 0.000 description 1
- INOIOAWTVPHTCJ-UHFFFAOYSA-N 6-acetamido-4-hydroxy-3-[[4-(2-sulfooxyethylsulfonyl)phenyl]diazenyl]naphthalene-2-sulfonic acid Chemical compound CC(=O)NC1=CC=C2C=C(C(N=NC3=CC=C(C=C3)S(=O)(=O)CCOS(O)(=O)=O)=C(O)C2=C1)S(O)(=O)=O INOIOAWTVPHTCJ-UHFFFAOYSA-N 0.000 description 1
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 125000003710 aryl alkyl group Chemical group 0.000 description 1
- NRZJUOBIAXMFGL-UHFFFAOYSA-N azanium;formaldehyde;chloride Chemical compound N.Cl.O=C NRZJUOBIAXMFGL-UHFFFAOYSA-N 0.000 description 1
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 125000000753 cycloalkyl group Chemical group 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 238000007046 ethoxylation reaction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- 229940005740 hexametaphosphate Drugs 0.000 description 1
- MTNDZQHUAFNZQY-UHFFFAOYSA-N imidazoline Chemical group C1CN=CN1 MTNDZQHUAFNZQY-UHFFFAOYSA-N 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 150000003018 phosphorus compounds Chemical class 0.000 description 1
- 229920000371 poly(diallyldimethylammonium chloride) polymer Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920000151 polyglycol Polymers 0.000 description 1
- 239000010695 polyglycol Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 description 1
- 235000019795 sodium metasilicate Nutrition 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
- 229940048086 sodium pyrophosphate Drugs 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- MSXHSNHNTORCAW-GGLLEASOSA-M sodium;(2s,3s,4s,5r,6s)-3,4,5,6-tetrahydroxyoxane-2-carboxylate Chemical compound [Na+].O[C@H]1O[C@H](C([O-])=O)[C@@H](O)[C@H](O)[C@H]1O MSXHSNHNTORCAW-GGLLEASOSA-M 0.000 description 1
- HLWRUJAIJJEZDL-UHFFFAOYSA-M sodium;2-[2-[bis(carboxymethyl)amino]ethyl-(carboxymethyl)amino]acetate Chemical compound [Na+].OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC([O-])=O HLWRUJAIJJEZDL-UHFFFAOYSA-M 0.000 description 1
- CKPKEQOGKBPTSV-UHFFFAOYSA-M sodium;hydrogen peroxide;hydroxide Chemical compound [OH-].[Na+].OO CKPKEQOGKBPTSV-UHFFFAOYSA-M 0.000 description 1
- YIVJSMIYMAOVSJ-UHFFFAOYSA-N sodium;phosphono dihydrogen phosphate Chemical compound [Na+].OP(O)(=O)OP(O)(O)=O YIVJSMIYMAOVSJ-UHFFFAOYSA-N 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- PJANXHGTPQOBST-UHFFFAOYSA-N stilbene Chemical class C=1C=CC=CC=1C=CC1=CC=CC=C1 PJANXHGTPQOBST-UHFFFAOYSA-N 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- ISIJQEHRDSCQIU-UHFFFAOYSA-N tert-butyl 2,7-diazaspiro[4.5]decane-7-carboxylate Chemical compound C1N(C(=O)OC(C)(C)C)CCCC11CNCC1 ISIJQEHRDSCQIU-UHFFFAOYSA-N 0.000 description 1
- 235000019818 tetrasodium diphosphate Nutrition 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- UNXRWKVEANCORM-UHFFFAOYSA-I triphosphate(5-) Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O UNXRWKVEANCORM-UHFFFAOYSA-I 0.000 description 1
- 239000000080 wetting agent Substances 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
- D06P5/02—After-treatment
- D06P5/04—After-treatment with organic compounds
- D06P5/06—After-treatment with organic compounds containing nitrogen
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
- D06L4/10—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen
- D06L4/12—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen combined with specific additives
Definitions
- Textile material made from cellulose fibers are pretreated for dyeing according to the prior art Bleaching process, for example with hydrogen peroxide, in an alkaline medium.
- the bleached material is then dried, dyed and washed.
- cellulose textiles can be dyed and bleached at the same time.
- the treatment fleet contains Cubosol dyes, sodium nitrite, wetting agents and hydrogen peroxide stabilized with sodium metasilicate.
- the dye fixation and the bleaching are carried out simultaneously in a saturated steam atmosphere at 100 to 101 ° C. for 3 to 10 minutes.
- the invention further relates to the bleaching aids mentioned, consisting of components a), b) and optionally c).
- Such compounds are well known in the art. Some of them are used as leveling agents for dyeing anionic polyacrylonitrile fibers (see R. Rohkohl, Tenside 2 (1965) 76).
- the nonionic surfactants used are polyglycol ethers, for example EO / PO copolymers, sugar polyethers and alkoxylation products, in particular ethoxylation products of fatty alcohols, fatty amines, phenyl-styrene adducts, alkylphenols, fatty acids and fatty acid amides.
- the surfactants contain 4 to 100 alkenoxy groups, in particular 12 to 60 ethyleneoxy groups.
- the ratio of components a): b): c) is 1: 0.5-3.0: 0.00-1.0, in particular 1: 0.7-2.5: 0.1-0, 8th.
- cellulose-containing fiber materials can be dyed without pretreatment and then bleached in an alkaline medium.
- the new process enables the use of smaller amounts of dye, since the components according to the invention virtually prevent the dyes from bleeding out in the post-bleaching process.
- the cellulose-containing fiber materials used are dyed in the usual liquors with direct or reactive dyes, as are known in practice.
- this process can preferably be carried out as a wet-on-wet process.
- the amounts used by the mixtures mentioned vary within wide limits and depend, inter alia, on the process, the degree of bleaching to be achieved, etc.
- a bleaching liquor contains general the following substances familiar to the expert: MgSO4.
- 7 H2O nonionic detergent for example a reaction product of dodecyl alcohol with 4 moles of ethylene oxide NaOH H2O2 and optionally with the addition of SiO2. Na2O.
- the process parameters for the bleaching process generally look as follows: PH value 7.0-14, preferably 11.0-13.0 temperature 25-98 ° C, preferably 80-98 ° C time 5 - 180 min Fleet ratio 1: 1 - 1:40
- the mixture contains the organic acids as sodium salts and 49 parts of water.
- the dye yield is 40% higher.
- a knitted fabric made from 100% raw cotton is dyed with on the overflow 0.25% CI Reactive Yellow 111 0.80% CI Reactive Green 21 0.50% CI Reactive Blue 116.
- the liquor is heated to 90 ° C. with a gradient of 2 ° C./min. Treatment is carried out at this temperature for 30 minutes. The liquor is drained and soaped at the boil for 10 minutes with the addition of 0.5 ml / l of a 50% solution of 2-phosphonobutane-1,2,4-tricarboxylic acid and 0.5 ml / l of an anionic detergent. Finally, it is rinsed hot and cold.
- a bleaching process carried out according to this method is characterized by a 30% greater depth of dye than in the case of bleaching without the agents according to the invention.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Detergent Compositions (AREA)
- Coloring (AREA)
Abstract
Description
Gegenstand der Erfindung ist ein Verfahren zum Bleichen von mit Direkt- oder Reaktivfarbstoffen gefärbten Materialien aus Rohcellulose, bevorzugt aus Rohbaumwolle, in einem Bleich- und Nachbehandlungsbad, dadurch gekennzeichnet, daß dieses Bad
- a) Stabilisatoren
- b) kationische monomere und/oder polymere Verbindungen und gegebenenfalls
- c) ein nichtionisches Tensid enthält,
- a) Stabilizers
- b) cationic monomeric and / or polymeric compounds and optionally
- c) contains a nonionic surfactant,
Textilmaterialion aus Cellulosefasern werden nach bisheriger Technik in der Vorbehandlung zum Färben einem Bleichprozeß, z.B. mit Wasserstoffperoxid, im alkalischen Medium unterworfen. Im Anschluß daran wird das gebleichte Material getrocknet, gefärbt und gewaschen.Textile material made from cellulose fibers are pretreated for dyeing according to the prior art Bleaching process, for example with hydrogen peroxide, in an alkaline medium. The bleached material is then dried, dyed and washed.
Die Vielzahl der Schritte in der Vorbehandlung, wie z.B. Abkochen, Waschen, Bleichen und Trocknen sind zeitraubende und kostenintensive Schritte in der Textilindustrie. Es sind schon vielfache Versuche unternommen worden, die oben beschriebenen Prozesse einfacher und damit kostengünstiger durchzuführen.The variety of steps in pretreatment, such as Boiling, washing, bleaching and drying are time-consuming and costly steps in the textile industry. Many attempts have already been made to carry out the processes described above more simply and therefore more cost-effectively.
In EP 0 100 300 ist ein Verfahren zur Nachbehandlung von gefärbten, nicht vorgebleichten cellulosehaltigen Fasermaterialien in einem kombinierten Wasch- und Bleichbad beschrieben. Das Behandlungsbad enthält folgende Komponenten:
- a) Derivate der Phosphon- bzw. phosphorigen Säure als Stabilisatoren und gegebenenfalls
- b) Polyhydroxyverbindungen.
- a) Derivatives of phosphonic or phosphorous acid as stabilizers and optionally
- b) polyhydroxy compounds.
Es ist bereits bekannt (vergl. SU 472 179), daß Cellulosetextilien gleichzeitig gefärbt und gebleicht werden können. Die Behandlungsflotte enthält Cubosol-Farbstoffe, Natriumnitrit, Netzmittel und mit Natriummetasilikat stabilisiertes Wasserstoffperoxid. Die Farbstoffixierung und die Bleiche erfolgen gleichzeitig in einer gesättigten Wasserdampfatmosphäre bei 100 bis 101°C während 3 bis 10 Minuten.It is already known (see SU 472 179) that cellulose textiles can be dyed and bleached at the same time. The treatment fleet contains Cubosol dyes, sodium nitrite, wetting agents and hydrogen peroxide stabilized with sodium metasilicate. The dye fixation and the bleaching are carried out simultaneously in a saturated steam atmosphere at 100 to 101 ° C. for 3 to 10 minutes.
Allerdings konnten auch diese Verfahren die Anforderungen in der Praxis nicht voll erfüllen.However, these processes could not fully meet the requirements in practice.
Es wurde nun gefunden, daß man eine Bleichung von mit Direkt- oder Reaktivfarbstoffen gefärbten Materialien aus Cellulose unter Erzielung von optimalen anwendungstechnischen Eigenschaften durchführen kann, wenn die Behandlung solcher Materialien in einem Bleich- und Nachbehandlungsbad erfolgt, das folgende Komponenten enthält:
- a) Stabilisatoren für die wäßrigen Wasserstoffperoxid-Bleichflotten
- b) kationische monomere Verbindungen und/oder kationische Polymerisate bzw. Polykondensate und gegebenenfalls
- c) nichtionische Tenside.
- a) Stabilizers for the aqueous hydrogen peroxide bleaching liquors
- b) cationic monomeric compounds and / or cationic polymers or polycondensates and optionally
- c) nonionic surfactants.
Die Erfindung betrifft weiterhin die genannten Bleichhilfsmittel, bestehend aus den Komponenten a), b) und gegebenenfalls c).The invention further relates to the bleaching aids mentioned, consisting of components a), b) and optionally c).
Die Bleichhilfsmittel können
- a) 10-60 Gew.-% eines oder mehrerer Stabilisatoren,
- b) 10-60 Gew.-% eines oder mehrerer kationischer Mittel und
- c) 0 bis 30 Gew.-% eines oder mehrerer nichtionischer Tenside, bevorzugt
- a) in einer Menge von 30-45 Gew.-%,
- b) in einer Menge von 30-45 Gew.-% und
- c) in einer Menge von 10-25 Gew.-% enthalten.
- a) 10-60% by weight of one or more stabilizers,
- b) 10-60% by weight of one or more cationic agents and
- c) 0 to 30% by weight of one or more nonionic surfactants, preferred
- a) in an amount of 30-45% by weight,
- b) in an amount of 30-45 wt .-% and
- c) contained in an amount of 10-25 wt .-%.
Die Bleichflottenstabilisatoren als solche sind als Stand der Technik dem Fachmann bekannt und beispielsweise im Chwala/Anger "Handbuch der Textilhilfsmittel", Ausgabe 1977, ab Seite 340 beschrieben. Als Bleichflottenstabilisatoren kommen folgende Verbindungsklassen in Frage:
- a1) Phosphorverbindungen, wie Tripolyphosphate, o-Phosphate, Phosphonsäuren wie Hydroxyethan-1,1-diphosphonsäure und Phosphonoalkan-polycarbonsäuren, 2-Phosphonobutan-1,2,4-tricarbonsäure (vergl. DE 2 061 838, EP 0 100 300)
- a2) Magnesiumsalze von Aminopolycarbonsäuren (DE-AS 1 113 931)
- a3) Ethylendiamintetraessigsäure und deren Salze
- a4) Polyacrylsäuren und Derivate
- a5) Gluconsäure
- a6) Polyaminopolycarbonsäure
- a7) Polycarbonsäure
- a8) (Poly)Aminomethylenphosphonsäuren
- a9) Natriumsulfamat (DE 33 42 175)
- a10) Asparaginsäure
- a11) Sulfosalicylsäure
- a12) Polyhydroxamsäuren
- a13) Natrium- und Magnesiumsilikate
- a14) Phosphonsäureesteroligomere (EP 82 823).
- a1) phosphorus compounds such as tripolyphosphates, o-phosphates, phosphonic acids such as hydroxyethane-1,1-diphosphonic acid and phosphonoalkane-polycarboxylic acids, 2-phosphonobutane-1,2,4-tricarboxylic acid (cf. DE 2 061 838, EP 0 100 300)
- a2) Magnesium salts of aminopolycarboxylic acids (DE-AS 1 113 931)
- a3) ethylenediaminetetraacetic acid and its salts
- a4) Polyacrylic acids and derivatives
- a5) Gluconic acid
- a6) polyaminopolycarboxylic acid
- a7) polycarboxylic acid
- a8) (Poly) aminomethylenephosphonic acids
- a9) sodium sulfamate (DE 33 42 175)
- a10) Aspartic acid
- a11) sulfosalicylic acid
- a12) polyhydroxamic acids
- a13) Sodium and magnesium silicates
- a14) phosphonic acid ester oligomers (EP 82 823).
Die Stabilisatoren enthalten meistens Mischungen der oben aufgeführten Wirkstoffe, wie z.B.:
- Gluconsäure und Natriumpyrophosphat
- Polyacrylsäureamid, Hexametaphosphat und o-Phosphat
- Gluconsäure-Natriumsalz und Ethylendiamintetraessigsäure-Natriumsalz
- Ethylendiamintetraessigsäure und Hydroxyethan-1,1-diphosphonsäure
- Gluconsäure, 2-Phosphonobutan-1,2,4-tricarbonsäure und Ethylendiamintetraessigsäure
- Gluconic acid and sodium pyrophosphate
- Polyacrylic acid amide, hexametaphosphate and o-phosphate
- Gluconic acid sodium salt and ethylenediaminetetraacetic acid sodium salt
- Ethylenediaminetetraacetic acid and hydroxyethane-1,1-diphosphonic acid
- Gluconic acid, 2-phosphonobutane-1,2,4-tricarboxylic acid and ethylenediaminetetraacetic acid
Zur Gruppe der kationischen Verbindungen gehören beispielsweise:
- b1) Alkylaminsalze
- b2) quaternäre Ammoniumsalze
- b3) Alkylpyridiniumsalze
- b4) protonierte Imidazolverbindungen oder deren quaternäre Imidazoliniumsalze
- b5) Alkyldiamine und Alkylpolyamine und deren Quarternierungsprodukte
- b6) Acyldiamine und Acylpolyamine und deren Quaternisierungsprodukte
- b7) Methylenoxyalkylpyridiniumsalze und
- b8) Alkylethylenharnstoffe.
- b1) alkylamine salts
- b2) quaternary ammonium salts
- b3) alkyl pyridinium salts
- b4) protonated imidazole compounds or their quaternary imidazolinium salts
- b5) alkyl diamines and alkyl polyamines and their quaternization products
- b6) acyl diamines and acyl polyamines and their quaternization products
- b7) methyleneoxyalkyl pyridinium salts and
- b8) alkyl ethylene ureas.
Derartige Verbindungen sind in der Technik hinreichend bekannt. Einige von ihnen werden als Egalisiermittel für das Färben anionischer Polyacrylnitrilfasern eingesetzt (vergl. R. Rohkohl, Tenside 2 (1965) 76).Such compounds are well known in the art. Some of them are used as leveling agents for dyeing anionic polyacrylonitrile fibers (see R. Rohkohl, Tenside 2 (1965) 76).
Weitere geeignete Verbindungen der Gruppe b) sind
- b9) kationische Polymerisate und Polykondensate, wie sie vielfach in der Papier- und Textilindustrie zum Einsatz kommen, beispielsweise beschrieben in:
- Aftertreatments for improving the fastness of dyes on textile fibers, C.C. Cook, Rev. Prog. Coloration 12 (1982) 73 und
- H. Fischer: Textilveredlung 25 (1990), Seiten 54 bis 61.
- b9) cationic polymers and polycondensates, as are often used in the paper and textile industry, for example described in:
- Aftertreatments for improving the fastness of dyes on textile fibers, CC Cook, Rev. Prog. Coloration 12 (1982) 73 and
- H. Fischer: Textilveredlung 25 (1990), pages 54 to 61.
Einige Beispiele für die erfindungsgemäßen kationischen monomeren und polymeren Verbindungen sind nachfolgend beschrieben:
- kationische monomere Verbindungen folgender Formel
- R und R¹
- = C₁-C₂₀-Alkyl, C₃-C₂₀-Alkenyl, Cycloalkyl, Aralkyl,
- R² und R³
- = C₁-C₄-Alkyl, C₁-C₄-Hydroxyalkyl oder beide Reste zusammen mit N einen heterocyclischen Ring bildend,
- R⁴
- = -CO-NH-Alkylen (C₂-C₃)
-COO-Alkylen (C₂-C₃)
-CH(OH)-CH₂-
-O-Alkylen (C₂-C₃)
-O-CH₂-CH(OH)-CH₂- - dabei m + n
- = 0 oder 1
- X⊖
- = Anion,
- die kationischen Polymere werden durch folgende Formeln beschrieben:
Einheiten der Strukturen- R⁵
- = H, C₁-C₄-Alkyl, C₁-C₄-Hydroxyalkyl
- R⁶
- = R⁵, Cyclohexyl, Benzyl
- R⁷
- = C₂-C₁₂-Alkylen, gegebenenfalls unterbrochen durch 1 oder mehrere -O-, -NH-CO-, -COO-, -CH=CH-,
- oder Einheiten der Strukturen
- oder Polydiallyldimethylammoniumchlorid
- Dicyandiamid-Formaldehyd-Ammoniumchlorid-Kondensationsprodukte.
- cationic monomeric compounds of the following formula
- R and R¹
- = C₁-C₂₀ alkyl, C₃-C₂₀ alkenyl, cycloalkyl, aralkyl,
- R² and R³
- = C₁-C₄-alkyl, C₁-C₄-hydroxyalkyl or both radicals together with N form a heterocyclic ring,
- R⁴
- = -CO-NH-alkylene (C₂-C₃)
-COO-alkylene (C₂-C₃)
-CH (OH) -CH₂-
-O-alkylene (C₂-C₃)
-O-CH₂-CH (OH) -CH₂- - where m + n
- = 0 or 1
- X ⊖
- = Anion,
- the cationic polymers are described by the following formulas:
Units of structures- R⁵
- = H, C₁-C₄-alkyl, C₁-C₄-hydroxyalkyl
- R⁶
- = R⁵, cyclohexyl, benzyl
- R⁷
- = C₂-C₁₂ alkylene, optionally interrupted by 1 or more -O-, -NH-CO-, -COO-, -CH = CH-,
- or units of structures
- or polydiallyldimethylammonium chloride
- Dicyandiamide formaldehyde ammonium chloride condensation products.
Als nichtionische Tenside finden Polyglykolether z.B. EO/PO-Copolymere, Zuckerpolyether sowie Alkoxylierungsprodukte, insbesondere Ethoxylierungsprodukte von Fettalkoholen, Fettaminen, Phenyl-Styrol-Addukten, Alkylphenolen, Fettsäuren und Fettsäureamiden Verwendung. Die Tenside enthalten dabei 4 bis 100 Alkenoxygruppen, insbesondere 12 bis 60 Ethylenoxygruppen.The nonionic surfactants used are polyglycol ethers, for example EO / PO copolymers, sugar polyethers and alkoxylation products, in particular ethoxylation products of fatty alcohols, fatty amines, phenyl-styrene adducts, alkylphenols, fatty acids and fatty acid amides. The surfactants contain 4 to 100 alkenoxy groups, in particular 12 to 60 ethyleneoxy groups.
Das Verhältnis der Komponenten a) : b) : c) liegt bei 1 : 0,5-3,0 : 0,00-1,0, insbesondere bei 1 : 0,7-2,5 : 0,1-0,8.The ratio of components a): b): c) is 1: 0.5-3.0: 0.00-1.0, in particular 1: 0.7-2.5: 0.1-0, 8th.
Nach dem erfindungsgemäßen Verfahren können cellulosehaltige Fasermaterialien ohne Vorbehandlung gefärbt und dann im alkalischen Medium gebleicht werden.In the process according to the invention, cellulose-containing fiber materials can be dyed without pretreatment and then bleached in an alkaline medium.
Nach dem erfindungsgemäßen Verfahren wird ein Ausbluten des Farbstoffes in das Bleichbad weitestgehend verhindert und dadurch eine mehrfache Benutzung der Flotte für unterschiedlich gefärbte Fasermaterialien ermöglicht.In the process according to the invention, bleeding of the dye into the bleaching bath is largely prevented and this enables the liquor to be used several times for differently colored fiber materials.
Wird gefärbte Rohbaumwolle einem Standardbleichprozeß unterworfen, verliert man durch ein Ausbluten von Farbstoffen in die Bleichflotte zwangsläufig an Farbtiefe. Das neue Verfahren ermöglicht den Einsatz von geringeren Farbstoffmengen, da die erfindungsgemäßen Komponenten beim Nachbleichprozeß ein Ausbluten der Farbstoffe nahezu verhindern. Das Färben der verwendeten cellulosehaltigen Fasermaterialien erfolgt in den üblichen Flotten mit Direkt- oder Reaktivfarbstoffen, wie sie in der Praxis bekannt sind.If dyed raw cotton is subjected to a standard bleaching process, the inevitable loss of color depth through the bleeding of dyes into the bleaching liquor. The new process enables the use of smaller amounts of dye, since the components according to the invention virtually prevent the dyes from bleeding out in the post-bleaching process. The cellulose-containing fiber materials used are dyed in the usual liquors with direct or reactive dyes, as are known in practice.
Bevorzugt kann dieser Prozeß aus Kostengründen als Naß-in-Naß-Verfahren durchgeführt werden.For cost reasons, this process can preferably be carried out as a wet-on-wet process.
Die Vorteile dieses Verfahrens gegenüber konventionellen sind folgende:
Je nach eingesetzten Reaktivfarbstoffen und Verfahren resultieren bis zu 80 % höheres Rendement und eine höhere Brillanz der Färbungen. Auch das "staining" (Anfärben der Flotte) der Bleichflotten wird deutlich verringert. Dies ermöglicht z.B. die Nachbleiche von verschiedenen Nuancen in derselben Bleichflotte. Damit wird eine beträchtlich erhöhte Wirtschaftlichkeit der Unterflottenbleichsysteme erreicht.The advantages of this method over conventional ones are as follows:
Depending on the reactive dyes and processes used, up to 80% higher yield and a higher brilliance of the dyeings result. The "staining" of the bleaching liquors is also significantly reduced. This enables, for example, the subsequent bleaching of different shades in the same bleaching liquor. This considerably increases the efficiency of the sub-fleet bleaching systems.
Der Nachbleichprozeß von reaktiv- bzw. direktgefärbter Rohbaumwolle erfolgt in üblicher Weise.The post-bleaching process of reactive or directly dyed raw cotton takes place in the usual way.
Die Mengen, die von den genannten Mischungen eingesetzt werden, variieren in weiten Grenzen und hängen unter anderem vom Verfahren, dem zu erzielenden Bleichgrad etc., ab.The amounts used by the mixtures mentioned vary within wide limits and depend, inter alia, on the process, the degree of bleaching to be achieved, etc.
Eine grobe Klassifizierung kann wie folgt gemacht werden:
- diskontinuierliches Verfahren (Flottenverhältnis 1:2 - 1:40)
0,2 - 3,5 g/l (Gesamtwirkstoff der erfindungsgemäßen Verbindungen) - kontinuierliches Verfahren
0,8 - 20,0 g/l.
- discontinuous process (liquor ratio 1: 2 - 1:40)
0.2-3.5 g / l (total active ingredient of the compounds according to the invention) - continuous process
0.8-20.0 g / l.
Neben den erfindungsgemäßen Bleichhilfsmitteln mit den angegebenen Komponenten enthält eine Bleichflotte im allgemeinen noch folgende, dem Fachmann geläufige Stoffe:
MgSO₄ . 7 H₂O
nichtionogenes Waschmittel, beispielsweise ein Umsetzungsprodukt von Dodecylalkohol mit 4 Mol Ethylenoxid
NaOH
H₂O₂
und gegebenenfalls unter Zusatz von SiO₂ . Na₂O.In addition to the bleaching aids according to the invention with the specified components, a bleaching liquor contains general the following substances familiar to the expert:
MgSO₄. 7 H₂O
nonionic detergent, for example a reaction product of dodecyl alcohol with 4 moles of ethylene oxide
NaOH
H₂O₂
and optionally with the addition of SiO₂. Na₂O.
Die Verfahrensparameter für den Bleichprozeß sehen im allgemeinen wie folgt aus:
Einsatzgebiete:
Bleichen aus langer Flotte,
Pad-Steam-Bleiche,
Klotz-Kaltverweil-Bleiche,
Pad-Roll-Bleiche,
vorzugsweise Unterflottenbleiche (UFB).Areas of application:
Bleaching from a long liquor,
Pad steam bleach,
Block cold bleaching,
Pad roll bleach,
preferably sub-fleet bleaching (UFB).
Eine Mischung aus
- 18 Teilen
- 2-Phosphonobutan-1,2,4-tricarbonsäure
- 4 Teilen
- Diethylentriaminpentamethylenphosphonsäure und
- 11 Teilen
- C₁₈-Fettalkohol, umgesetzt mit ca. 50 Ethylenoxid
wird unter Erhitzen auf 50 bis 60°C homogen verrührt und anschließend unter weiterem Rühren mit - 18 Teilen
- C₁₂-Alkyldimethylbenzylammoniumchlorid versetzt.
- 18 parts
- 2-phosphonobutane-1,2,4-tricarboxylic acid
- 4 parts
- Diethylenetriaminepentamethylenephosphonic acid and
- 11 parts
- C₁₈ fatty alcohol, implemented with about 50 ethylene oxide
is stirred homogeneously with heating to 50 to 60 ° C and then with further stirring - 18 parts
- C₁₂-alkyldimethylbenzylammonium chloride added.
Die Mischung enthält die organischen Säuren als Na-salze sowie 49 Teile Wasser.The mixture contains the organic acids as sodium salts and 49 parts of water.
Gemäß dem Verfahren zur Herstellung von Mischung A werden folgende Komponenten homogen verrührt:
- 14 Teile
- 2-Phosphonobutan-1,2,4-tricarbonsäure
- 3 Teile
- Diethylentriaminpentamethylenphosphonsäure
- 7 Teile
- C₁₈-Fettalkohol, umgesetzt mit ca. 50 Ethylenoxid und
- 15 Teile
- eines Polykondensats mit wiederkehrenden Einheiten der Formel D
- 61 Teile
- Wasser. Die organischen Säuren liegen als Nasalze vor.
- 14 parts
- 2-phosphonobutane-1,2,4-tricarboxylic acid
- 3 parts
- Diethylenetriaminepentamethylenephosphonic acid
- 7 parts
- C₁₈ fatty alcohol, implemented with about 50 ethylene oxide and
- 15 parts
- a polycondensate with recurring units of the formula D.
- 61 pieces
- Water. The organic acids are in the form of nasal salts.
Eine Rundstrickware aus 100 % Rohbaumwolle wird gefärbt mit
3 g/l C.I. Reactive Orange 67
12 g/l C.I. Reactive Red 158
nach dem Pad-Steam-Verfahren. Anschließend wird bei 60°C gespült und abgequetscht auf eine Restfeuchte von 70 %. Auf der UFB-Anlage wird naß-in-naß mit einem pick-up von 80 % mit einer Bleichflotte von 25°C, bestehend aus
- 0,2
- g/ltr MgSO₄ . 7 H₂O
- 8,0
- ml/ltr Mischung A
- 1,0
- ml/ltr eines Umsetzungsprodukts von Decylalkohol mit 5 Ethylenoxid und 4 Propylenoxid
- 1,8
- ml/ltr NaOH 100 %
- 5,0
- ml/ltr H₂O₂ 50 %
3 g / l CI Reactive Orange 67
12 g / l CI Reactive Red 158
using the pad-steam process. Then rinsed at 60 ° C and squeezed to a residual moisture of 70%. The UFB system is wet-on-wet with a pick-up of 80% with a bleaching liquor of 25 ° C, consisting of
- 0.2
- g / ltr MgSO₄. 7 H₂O
- 8.0
- ml / ltr mixture A
- 1.0
- ml / liter of a reaction product of decyl alcohol with 5 ethylene oxide and 4 propylene oxide
- 1.8
- ml / ltr NaOH 100%
- 5.0
- ml / ltr H₂O₂ 50%
Im Vergleich zu konventionellen Verfahren erzielt man eine um 40 % höhere Farbstoffausbeute.Compared to conventional processes, the dye yield is 40% higher.
Anstelle von C₁₂-Alkyldimethylbenzylammoniumchlorid in Mischung A können mit gleichem Erfolg gleiche Mengen der folgenden Verbindungen eingesetzt werden:
Eine Maschenware aus 100 % Rohbaumwolle wird auf dem Overflow gefärbt mit
0,25 % C.I. Reactive Yellow 111
0,80 % C.I. Reactive Green 21
0,50 % C.I. Reactive Blue 116.A knitted fabric made from 100% raw cotton is dyed with on the overflow
0.25% CI Reactive Yellow 111
0.80% CI Reactive Green 21
0.50% CI Reactive Blue 116.
Anschließend wird warm gespült bei 60°C während 10 min. Die Bleiche wird bei 60°C begonnen durch Zusatz von
- 0,5
- ml/ltr Umsetzungsprodukt von Decylalkohol mit 5 Ethylenoxid und 4 Propylenoxid
- 2,0
- ml/ltr Mischung B
- 1,2
- g/ltr NaOH 100 %
- 3,0
- ml/ltr H₂O₂ 50 %ig.
- 0.5
- ml / ltr reaction product of decyl alcohol with 5 ethylene oxide and 4 propylene oxide
- 2.0
- ml / ltr mixture B
- 1.2
- g / l NaOH 100%
- 3.0
- ml / ltr H₂O₂ 50%.
Die Flotte wird mit einem Gradienten von 2°C/min auf 90°C aufgeheizt. Bei dieser Temperatur wird 30 min behandelt. Die Flotte wird abgelassen und unter Zusatz von 0,5 ml/ltr einer 50 %igen Lösung von 2-Phosphonobutan-1,2,4-tricarbonsäure und 0,5 ml/ltr eines anionischen Waschmittels 10 min lang kochend geseift. Abschließend wird heiß und kalt gespült.The liquor is heated to 90 ° C. with a gradient of 2 ° C./min. Treatment is carried out at this temperature for 30 minutes. The liquor is drained and soaped at the boil for 10 minutes with the addition of 0.5 ml / l of a 50% solution of 2-phosphonobutane-1,2,4-tricarboxylic acid and 0.5 ml / l of an anionic detergent. Finally, it is rinsed hot and cold.
Eine nach diesem Verfahren durchgeführte Bleiche zeichnet sich durch eine 30 % höhere Farbstofftiefe als bei einer Bleiche ohne die erfindungsgemäßen Mittel aus.A bleaching process carried out according to this method is characterized by a 30% greater depth of dye than in the case of bleaching without the agents according to the invention.
Anstelle des in Mischung B eingesetzten Polykondensates können mit gleichem Erfolg auch Produkte mit wiederkehrenden Einheiten der folgenden Formeln
oder ein Produkt, das durch Polykondensation von Dicyandiamid, Formaldehyd und Ammoniumchlorid hergestellt wurde,
eingesetzt werden.Instead of the polycondensate used in mixture B, products with recurring units of the following formulas can also be used with equal success
or a product made by polycondensation of dicyandiamide, formaldehyde and ammonium chloride,
be used.
Claims (5)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4130484A DE4130484A1 (en) | 1991-09-13 | 1991-09-13 | METHOD FOR REBLEACHING COLORED RAW CELLULOSE |
DE4130484 | 1991-09-13 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0531849A2 true EP0531849A2 (en) | 1993-03-17 |
EP0531849A3 EP0531849A3 (en) | 1993-06-09 |
EP0531849B1 EP0531849B1 (en) | 1996-04-24 |
Family
ID=6440533
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92114840A Expired - Lifetime EP0531849B1 (en) | 1991-09-13 | 1992-08-31 | Process for post-bleaching of coloured raw cellulose |
Country Status (3)
Country | Link |
---|---|
US (1) | US5372610A (en) |
EP (1) | EP0531849B1 (en) |
DE (2) | DE4130484A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995020643A1 (en) * | 1994-01-28 | 1995-08-03 | Peroxid-Chemie Gmbh | Method of bleaching jeans fabric |
US5858961A (en) * | 1994-07-06 | 1999-01-12 | Henkel Kommanditgesellschaft Auf Aktien | Process for the production of light-colored surfactants |
EP0940495A1 (en) * | 1998-03-05 | 1999-09-08 | Bayer Aktiengesellschaft | Simultaneous washing and bleaching of natural fibres and textiles containing the same |
Families Citing this family (5)
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DE60210085T2 (en) * | 2001-06-29 | 2006-11-09 | The Procter & Gamble Company, Cincinnati | STABILITY-RESISTANT PERSONALIZATION SYSTEM SUITABLE FOR TISSUE TREATMENT |
US6743278B1 (en) * | 2002-12-10 | 2004-06-01 | Advanced Technology Materials, Inc. | Gas storage and dispensing system with monolithic carbon adsorbent |
US7351764B2 (en) * | 2004-03-31 | 2008-04-01 | Nalco Company | Methods to enhance brightness of pulp and optimize use of bleaching chemicals |
CN111733588B (en) * | 2020-06-11 | 2022-10-25 | 台州同兴印染有限公司 | Knitted fabric printing and dyeing pretreatment liquid, preparation method and knitted fabric dyeing process |
CN111705526B (en) * | 2020-06-11 | 2022-12-27 | 台州同兴印染有限公司 | Knitted fabric dyeing process capable of recycling waste water |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2301627A1 (en) * | 1975-02-18 | 1976-09-17 | Basf Ag | METHOD FOR STABILIZING ALKALINE BLEACHING BATHS CONTAINING PEROXIDES AND SILICATES |
EP0100300A2 (en) * | 1982-07-27 | 1984-02-08 | Ciba-Geigy Ag | Process for the post treatment of dyed cellulose containing fibrous materials |
DE3545909A1 (en) * | 1985-12-23 | 1987-06-25 | Henkel Kgaa | SILICATE- AND MAGNESIUM-FREE ACTIVE SUBSTANCE MIXTURES |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU472179A1 (en) * | 1972-04-27 | 1975-05-30 | Ивановский научно-исследовательский институт хлопчатобумажной промышленности | The method of single-dyeing and bleaching of cellulose fabrics |
DE2933969C2 (en) * | 1979-08-22 | 1982-02-25 | Benckiser-Knapsack Gmbh, 6802 Ladenburg | N- (hydroxymethyl) aminoalkanediphosphonic acids and stabilizers containing these compounds |
US5180514A (en) * | 1985-06-17 | 1993-01-19 | The Clorox Company | Stabilizing system for liquid hydrogen peroxide compositions |
US4959075A (en) * | 1985-12-23 | 1990-09-25 | Henkel Kommanditgesellschaft Auf Aktien | Silicate- and magnesium-free stabilizer hydrogen peroxide mixtures for bleaching processes |
-
1991
- 1991-09-13 DE DE4130484A patent/DE4130484A1/en not_active Withdrawn
-
1992
- 1992-08-31 EP EP92114840A patent/EP0531849B1/en not_active Expired - Lifetime
- 1992-08-31 DE DE59206098T patent/DE59206098D1/en not_active Expired - Fee Related
- 1992-09-03 US US07/940,117 patent/US5372610A/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2301627A1 (en) * | 1975-02-18 | 1976-09-17 | Basf Ag | METHOD FOR STABILIZING ALKALINE BLEACHING BATHS CONTAINING PEROXIDES AND SILICATES |
EP0100300A2 (en) * | 1982-07-27 | 1984-02-08 | Ciba-Geigy Ag | Process for the post treatment of dyed cellulose containing fibrous materials |
DE3545909A1 (en) * | 1985-12-23 | 1987-06-25 | Henkel Kgaa | SILICATE- AND MAGNESIUM-FREE ACTIVE SUBSTANCE MIXTURES |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995020643A1 (en) * | 1994-01-28 | 1995-08-03 | Peroxid-Chemie Gmbh | Method of bleaching jeans fabric |
US5858961A (en) * | 1994-07-06 | 1999-01-12 | Henkel Kommanditgesellschaft Auf Aktien | Process for the production of light-colored surfactants |
EP0940495A1 (en) * | 1998-03-05 | 1999-09-08 | Bayer Aktiengesellschaft | Simultaneous washing and bleaching of natural fibres and textiles containing the same |
Also Published As
Publication number | Publication date |
---|---|
DE59206098D1 (en) | 1996-05-30 |
DE4130484A1 (en) | 1993-03-18 |
US5372610A (en) | 1994-12-13 |
EP0531849B1 (en) | 1996-04-24 |
EP0531849A3 (en) | 1993-06-09 |
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