CN1916082A - Novel quinonimine sulfur dye compositions, methods for producing them and their use for dyeing cellulose-containing material - Google Patents

Novel quinonimine sulfur dye compositions, methods for producing them and their use for dyeing cellulose-containing material Download PDF

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CN1916082A
CN1916082A CNA2005100927530A CN200510092753A CN1916082A CN 1916082 A CN1916082 A CN 1916082A CN A2005100927530 A CNA2005100927530 A CN A2005100927530A CN 200510092753 A CN200510092753 A CN 200510092753A CN 1916082 A CN1916082 A CN 1916082A
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colourless
dye composition
sulfur dye
sulfur
preparation
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CN1916082B (en
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托马斯·贝希托尔德
海科·布鲁纳
约阿基姆·格鲁策
理查德·里希特
沃尔夫冈·施勒卡
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Dystar Textilfarben GmbH and Co Deutschland KG
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B67/00Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B67/00Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
    • C09B67/0071Process features in the making of dyestuff preparations; Dehydrating agents; Dispersing agents; Dustfree compositions
    • C09B67/0077Preparations with possibly reduced vat, sulfur or indigo dyes
    • C09B67/0078Preparations of vat, sulfur or indigo dyes in liquid form
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B49/00Sulfur dyes
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B67/00Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
    • C09B67/0071Process features in the making of dyestuff preparations; Dehydrating agents; Dispersing agents; Dustfree compositions
    • C09B67/0077Preparations with possibly reduced vat, sulfur or indigo dyes
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/30General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using sulfur dyes
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P3/00Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
    • D06P3/58Material containing hydroxyl groups
    • D06P3/60Natural or regenerated cellulose
    • D06P3/6025Natural or regenerated cellulose using vat or sulfur dyes

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Coloring (AREA)
  • Paper (AREA)
  • Cosmetics (AREA)

Abstract

The invention relates to novel leuko-sulfuric dye compositions which are characterized in that they are accessible at current densities between 50 mA/cm<2> and 500 mA/cm<2> and a velocity of flow of 0.1 m/s to 2 m/s, preferably at 0.1 to 0.4 m/s. The invention also relates to the production of these dye compositions and to their use for dyeing cellulose-containing material.

Description

Novel quinonimine sulfur dye composition, its preparation method and to the painted application of cellulose materials
Technical field
The present invention relates to the novel colourless sulfur dye composition of quinonimine thioxine dyes class, the invention still further relates to the method for preparing this colourless sulfur dye composition by electrochemical reduction, this method is undertaken by the controlled change of used multiple electro-chemical machining condition.
Background technology
The quinonimine thioxine dyes comprises the dye class of reacting formation by for example polynitration phenol (polynitrated phenol), halogeno-benzene, indolol or indoaniline and sulphur, alkali metalsulphide or alkali metals polysulfide in water or pure medium.This class dyestuff specifically comprises the thioxine dyes of purple, blueness, green, reddish-brown and black.Oligomeric or the polymerisate that obtains contains the organic structure repeating unit (for example phenthiazone, Buprofezin (thiazone), thianthrene and fen _ piperazine ketone minor structure) that links together by disulfide linkage.Reference Angewandte Chemie60 (1948), 141-147 has described these structures.
In order to use these sulfur dyeings, promptly use dyestuff (ready-to-dye) by multiple method of reducing with what they were converted into colorless form, the dyestuff of this form reduces the quinonimine functionality on the one hand, and reductibility ground disconnects disulfide linkage on the other hand.The leucocompound that obtain have lower molar weight usually and comprise the material of wide molecular weight scope.They dissolve in alkaline water medium and can be used in dyeing to cellulose materials.
At suitable oxygenant, under the existence as airborne oxygen, superoxide or bromate, dyestuff is returned so that equation shown below is fully oxidized to some extent, and wherein R represents organic repeated structural unit, for example phenthiazone, Buprofezin, thianthrene or phenol _ piperazine ketone minor structure.
With in actual dying operation process, just be converted into colorless form and promptly use the thioxine dyes of complete oxidation of dyestuff the same by adding the organic or inorganic reductive agent, promptly also having with the colourless thioxine dyes kind of dyestuff pre-reduction type that degree is different is commercially available, for example Cassulfon_Carbon CMR.Preferred these dyestuffs are prepared with big technical scale by being added in inorganic or organic reducing agent in the alkaline medium such as Sodium sulfhydrate or glucose.
The shortcoming of these existing methods is, owing to used reductive agent exists very high refuse concentration and salt load and causes high COD, TOC in the waste water of dyehouse to load.These by products can only drop into a large amount of engineerings and be removed in the upstream in wastewater treatment stage by expensive, loaded down with trivial details method such as membrane technique.
Known a kind of alternative, eco-friendly method of reducing from DE 1906083 and EP 10122210 documents for example.DE 1906083 recommends to pass through in the aqueous solution with 5mA/cm 2To 50mA/cm 2Current density make reducing dyes by cathodic reduction.Yet this method is inapplicable in the situation of commercially available pre-reduction type thioxine dyes, and commercially available pre-reduction type thioxine dyes is mixed with other stable reductive agent usually in dye solution, because acutely emit hydrogen in reduction process.EP 1012210 patent specifications have been described at 0.5mA/cm 2To 5mA/cm 2Current density under the method for reduction-sulfurization dyestuff.
Summary of the invention
Surprisingly, find to use 50mA/cm now 2To 500mA/cm 2Current density and 0.1m/s might obtain the novel colourless sulfur dye composition that can not prepare by the conventional reduction method of using the organic or inorganic reductive agent to the flow velocity of 0.4m/s.
Therefore, the invention provides can be at 50mA/cm 2To 500mA/cm 2, preferred 50mA/cm 2To 150mA/cm 2Current density and the novel colourless sulfur dye composition that obtains under to 2m/s, preferred 0.1m/s to the flow velocity of 0.4m/s of 0.1m/s.
The method that is used to prepare colourless sulfur dye composition of the present invention is new, and it forms the part of theme of the present invention equally.Emit for fear of the hydrogen under this high current density, electrochemical reduction carries out under quite high dye strength, at concentration and the 0.5mA/cm of 80g/l 2Initial current density under begin, and increase continuously concentration to 500g/l with increase continuously current density to 500mA/cm 2Method of the present invention might make dye strength be reduced to 500g/l.
Colourless sulfur dye composition of the present invention prepares in alkaline medium, preferred pH>9.5.Preferred use an alkali metal salt particularly the basic solution of sodium hydroxide, potassium hydroxide or yellow soda ash as conducting electrolyte.Especially preferably use the sodium hydroxide dilute aqueous soln.The concentration of the conducting salt that adds be 0.1mol/l to 5mol/l, be preferably 0.1mol/l to 1.5mol/l.
The Bunte salt of following general formula that perhaps, can be by adding catalytic amount prevents that hydrogen from emitting:
R-S-SO 3Na,
Wherein R represents organic repeated structural unit, and its example is phenthiazone, Buprofezin, thianthrene or phenol _ piperazine ketone minor structure; Or the chemical reducing agent by adding catalytic amount for example V-Brite B, organic-sulfinic acid and/or organic sugar prevent that hydrogen from emitting, the amount of making can be at most 5 weight % of the initial consumption of the thioxine dyes that will be reduced.In addition, after adding Bunte salt or reductive agent, from 80g/l and 0.5mA/cm 2Initial current density begin, concentration increases continuously 500g/l.
Basically all isolated forms lead directly to pond (divided flowthrough cell) and all are applicable to preparation colourless sulfur dye composition of the present invention.The negative electrode that uses not only can be the large flat electrode, and can be three-dimensional negative electrode.
Preferably 20 ℃ to 135 ℃, more preferably at 20 ℃ to 95 ℃ following preparation colourless sulfur dye compositions of the present invention.
If desired, can reduce in the presence of commercially available wetting agent, its example is sulfonated lignin.
Preferred method reduction C.I.Leuco Sulfur Black 1 of the present invention or the C.I.VatBlue 43 of using.In principle, the mixture of different thioxine dyess also can be by method reduction of the present invention.
In the present invention reduced the situation of C.I.Leuco Sulfur Black 1, the concentration of the reducing equivalent of record was that 150Ah/kg is to 534Ah/kg with respect to 1kg drying solid dyestuff.
In the present invention reduced the situation of C.I.Vat Blue 43, the concentration of the reducing equivalent of record was that 75Ah/kg is to 225Ah/kg with respect to 1kg drying solid dyestuff.
Use common HPLC technology and for example material described in the document DE 10 120 821 to measure the composition of each colourless thioxine dyes mixture.
Table 1 expression, compare to 3 with the sample 1 of electrochemical reduction under different current densities, the HPLC spectral results of the C.I.Sulfur Black 1 of reversion, sample 1 reduces by method of the present invention, sample 2 is by the reduction of the method described in the document DE 1906083, and sample 3 is by the reduction of the method described in the EP 10122210.
The composition of the C.I.Sulfur Black 1 that table 1:HPLC measures
Dyestuff 1 retention time (area %) Dyestuff 2 retention time (area %) Dyestuff 3 retention time (area %) Dyestuff 4 retention time (area %) Dyestuff 5 retention time (area %)
Sample 1 (Fig. 1) (j=100mA/cm 2) Minute 2.8 (31.7) Minute 3.0 (65.5)
Sample 2 (Fig. 2) (j=20mA/cm 2) Minute 1.6 (5.0) Minute 2.5 (13.5) Minute 2.9 (81.3)
Sample 3 (Fig. 3) (j=0.48mA/cm 2) Minute 1.6 (10.9) Minute 2.5 (18.7) Minute 2.9 (69.6)
Sample 4 (Fig. 4) (0.8mA/cm 2<j<101 mA/cm 2) Minute 2.6 (1.16) Minute 2.8 (43.72) Minute 3.0 (53.8)
C.I.Sulfur Black 1 (sulfide-reduction) (Fig. 5) Minute 1.6 (1.7) Minute 2.0 (4.2) Minute 2.5 (4.9) Minute 2.9 (30.5) Minute 3.0 (58.3)
Surprisingly, general>50mA/cm 2High current density be used in combination with the high flow rate that allows dyestuff to the optimal transport of electrode, make C.I.Sulfur Black 1 have narrower species distribution, thus the narrower molecular distribution of generation.
Table 2 expression is compared with the sample 6 to 7 of electrochemical reduction under different current densities, the HPLC spectral results of the C.I.Vat Blue 43 of reversion, and sample 6 reduces by method of the present invention, and sample 7 reduces according to method described in the document EP 10122210.
Dyestuff 1 retention time (area %) Dyestuff 2 retention time (area %) Dyestuff 3 retention time (area %) Dyestuff 4 retention time (area %) Dyestuff 5 retention time (area %)
Sample 6 (Fig. 6) (j=100mA/cm 2) Minute 4.21 (6.07) Minute 6.03 (13.18) Minute 6.97 (50.91) Minute 9.77 (12.61) Minute 14.89 (6.99)
Sample 7 (Fig. 7) (j=10mA/cm 2) Minute 3.62 (4.26) - Minute 7.92 (52.25) Minute 10.99 (35.07) Minute 16.53 (6.80)
C.I.Vat Blue 43 (sulfide-reduction) (Fig. 8) Minute 5.15 (49.28) Minute 6.10 (11.06) Minute 6.45 (12.95) Minute 7.10 (16.01) Minute 10.65 (7.56)
Colourless thioxine dyes solution of the present invention not only can be applied to fiber by the classical dyeing process that uses excessive greatly Sodium sulfhydrate (NaHS), and can be applied to fiber under shielding gas described in the DE of Offenlegungsschriff 10234825 A1 or the electrochemical conditions under the dyeing of the best is formed.Reductive condition only is used for compensating the atmosphericoxygen that is introduced in staining fluid.This makes might obtain wherein salt, COD and the low waste water of TOC content.Therefore, the application of colourless sulfur dye composition of the present invention provides ecological benefit and economics benefit in essence.
Perhaps, also might want the direct dye composite of the present invention that in dye bath, prepares by the electrochemical reduction preparation.
Carry out electrolysis at the titanium electrode of for example wherein being separated and being contained stainless steel cathode by cationic exchange membrane and scribble the stainless steel mixed oxide in as the anodic pond, electrolysis is in the presence of electroconductibility electrolysis liquid, at 50mA/cm 2To 500mA/cm 2, preferred 50mA/cm 2To 150mA/cm 2Current density under and 0.1m/s to 2m/s, preferably 0.1m/s carries out under the flow velocity of 0.4m/s, dye bath cycle through the material that will be colored and as the pumping of sewage discharging current by the cathodic area, make dye bath continue to regenerate by exchanging with catholyte.Catholyte contains the thioxine dyes that will be reduced, for example C.I.Sulfur Black 1 or C.I.Vat Blue 43, if desired, also contain wetting agent, conducting electrolyte (preferred as alkali salt is the basic solution of sodium hydroxide, potassium hydroxide or yellow soda ash particularly, more preferably the dilute aqueous soln of sodium hydroxide) and conducting salt.The concentration of the conducting salt that adds be 0.1mol/l to 5mol/l, be preferably 0.1mol/l to 1.5mol/l.
Being ready for painted cellulose materials is in the dye bath.
Dyeing procedure comprises a plurality of stages:
Reduction and heating phase
Dyeing and cooling stages
Thioxine dyes oxidation, rinsing and drying are finished dyeing.
The painted color evaluation of using colourless thioxine dyes of the present invention to obtain shows, compare with the colourless thioxine dyes for preparing by use chemical reducing agent routine, their notable feature is to have significantly lower waste part, and these waste parts do not have avidity to fiber.This causes form and aspect purer, and the form and aspect drift of the colourless sulfuration dyeing composition of simultaneous electrochemistry generation.Observe C.I.Sulfur Black 1 experience significantly to more blue, redder, cleaner form and aspect drift.These effects of same observed C.I.Vat Blue 43 just need in addition necessary change.
Look trajectory measurement method (color locus) colorimetric evaluation dyeing by DIN 6174 and DIN 5033.
Shown in the L value in the table 3, the electrochemical reduction of dyestuff the method according to this invention under the current density that increases of low amount obtains same colour strength.
Table 3:
Think that exsiccant reoxidizes dyestuff/kilogram solution L (brightness) A (red-green) B (Huang-indigo plant)
C.I.Sulfur Black 1 (sulfide-reduction) 280g 16.03 -0.33 -1.26
Sample 1 (j=100mA/cm 2) 247.2g 16.01 -0.08 -1.67
Sample 3 (j=0.48mA/cm 2) 283.2g 15.68 -0.16 -1.53
By dip method, the degree of depth of color harmony form and aspect is by the look trajectory measurement method of dyeing (10% sulfuration dyeing), as the function call of dye strength and current density to describe.In the situation of C.I.Vat Blue43, obtained remarkable displacement (redder under higher current density) as the form and aspect of the function of used current density, as shown in table 4.
Table 4:
L (brightness) A (red-green) B (Huang-indigo plant)
C.I.Vat Blue 43 (sulfide-reduction) 29.30 1.94 -23.39
Sample 4 (j=100mA/cm 2) 30.31 1.24 -22.36
Sample 5 (j=10mA/cm 2) 30.05 0.99 -22.10
Except the form and aspect aspect, the noticeable place of thioxine dyes of the present invention is that it need lack the thioxine dyes slurry with maximum 10% than the colourless thioxine dyes solution of chemical preparation for obtaining corresponding colour strength, and therefore uses maximum 10% raw material less.
Can separate as solid material by colourless quinonimine sulfur dye composition, make it stable electrochemical reduction of the present invention.
Therefore, the present invention also provide by pH is reduced to≤9 and/or make colourless quinonimine thioxine dyes solution drying behind the electrochemical reduction prepare the method for the reduced form quinonimine thioxine dyes of the present invention of solid form.
A kind of method of the colourless quinonimine thioxine dyes of separate solid of the present invention for make pH be reduced to≤9, this is by adding organic acid, mineral acid in the solution after reduction and carbonic acid gas is realized.In addition, can regulate thioxine dyes solution after the reduction to pH≤9 by adding entry, thereby make dye precipitated.Obtain product of the present invention by filtration and drying subsequently then.In the method, there are not the salt of avidity and organic constituent to be retained in the solution to fiber.Can carry out oxide treatment to the filtrate that obtains, the COD load is significantly reduced.10 weight % of the residual salt content≤total mass of the dried thioxine dyes that so obtains.
The second method of the colourless quinonimine thioxine dyes of separate solid is with the solution finish-drying after the reduction.Can use conventional dehumidification system and device (for example vaporizer) to carry out drying, for example by spraying drying or film drying, and the exsiccant product further can be pulverized and be reached required particle diameter, make after exsiccant, the reduction, alkaline bleach liquor soluble product can be converted into for example bead, powder or form of chips.Also may prepare by mixing with proper assistant.Another kind of possibility is freeze-drying.
The concentration of the reducing equivalent of the dried colourless thioxine dyes that so obtains is with respect to the drying solid dyestuff of 1kg, in the situation of C.I.Leuco Sulfur Black l,, in the situation of C.I.Vat Blue 43, arrive 225Ah/kg for 75Ah/kg for 150Ah/kg arrives 534Ah/kg.When with respect to whole product, during the water content of colourless thioxine dyes≤5 weight %, preferred≤as during 2 weight %, can to think that it is the exsiccant product.
It is the very simple method of the colourless thioxine dyes of the present invention of stable (not adding other sulfide and other auxiliary agent) colourless sulfur dye composition that described method provides form, the very high and sulfur compound not in fact of described colourless sulfur dye composition concentration, and, when when lower pH value is passed through precipitate and separate, it does not contain salt and the organic constituent that fiber is not had avidity, with respect to whole product, its amount≤1 weight %, preferred≤0.5 weight %.The distinguishing feature of the dyestuff of preparation is its stability to atmospheric oxidn.
It is 20 to 600g/L used dyestuff that the colourless thioxine dyes solution that is used to separate product of the present invention contains concentration.
If in case soluble in water and when suitably mixing with alkali, product of the present invention can be used for cellulose materials or leather coloring.Dyeing process that not only can be by routine is done colourless sulfur dye composition be applied to fiber after dissolving of the present invention, and can be by be applied to fiber at the dye component of use the best under the shielding gas or under the electrochemical conditions as DE 10234825 A1 of Offenlegungsschnft described in.Reductive condition only is used for compensating the atmosphericoxygen that is introduced in staining fluid.Therefore the use of colourless sulfur dye composition of the present invention has formed ecology and economics benefit in essence.The chromatic characteristic of this product is equivalent to apply for the chromatic characteristic of sample described in the DE102004040601.4.
Embodiment
Following examples are used to illustrate the present invention.
Preparation embodiment 1 (sample 1)
The aqeous suspension that is used for electrolysis C.I.SulfurBlack 1 cake of press by the straight-through pond of cationic exchange membrane (Nafion 424) separation.Bring into use a small amount of dyestuff, and in electrolytic process, increase gradually.In the 2L water of the Primasol NF of 50% aqueous sodium hydroxide solution that comprises 8mL and 4ml wetting agent, use thinks that the C.I.Sulfur Black 1 of exsiccant 156.9g begins reaction, and increases continuously the C.I.Sulfur Black 1 that thinks the maximum 2271g of exsiccant in the 5.815L cumulative volume.The anolyte that uses is aqueous sodium hydroxide solution (1mol/l).Use 100mA/cm 2Current density and the flow velocity electrolysis of 0.2m/s 3510 minutes, the concentration of confirmable reducing equivalent is 4.2 after the electrolysis, it is equivalent to the quantity of electric charge that every kilogram of dyestuff is 378Ah.So the solution of preparation can be used for painted purpose after need not to add reductive agent in addition or adding minimum reductive agent.
The HPLC spectrum of reaction product is shown among Fig. 1.
Preparation embodiment 2 (sample 2)
Described in DE 1906083, use the straight-through pond of separating with 20mA/cm by cationic exchange membrane (Nafion 424) 2Current density electrolysis C.I.Sulfur Black 1 suspension.
The HPLC spectrum of reaction product is shown among Fig. 2.
Preparation embodiment 3 (sample 3)
Described in DE 101222210, use the straight-through pond of separating with 0.48mA/cm by cationic exchange membrane (Nafion 424) 2Current density electrolysis C.I.Sulfur Black 1 suspension.
The HPLC spectrum of reaction product is shown among Fig. 3.
Preparation embodiment 4 (sample 4)
The aqeous suspension that is used for electrolysis C.I.SulfurBlack 1 cake of press by the straight-through pond of cationic exchange membrane (Nafion_424) separation.The C.I.Sulfur Black 1 that think exsiccant 337g of use in the 4L water of 50% aqueous sodium hydroxide solution that comprises 16mL begins reaction, and think the C.I.Sulfur Black 1 of exsiccant 126g to the 253g aliquot by in 1320 minutes time, adding gradually, in the cumulative volume that reaches at 6.8L, think the C.I.Sulfur Black 1 of exsiccant 1740g.Electrolysis is at 0.83mA/cm 2Current density begin, and along with the increase of leuco dye concentration is 100mA/cm to the maximum 2, flow velocity is 0.2m/s.
The concentration that can determine reducing equivalent after electrolysis is 5.67, the quantity of electric charge that to be equivalent to every kilogram of dyestuff be 504Ah.The solution that so obtains has and the same molecular composition of dye solution for preparing preparation among the embodiment 1.
The HPLC spectrum of reaction product is shown among Fig. 4.
Can following reaction product isolated, it is a solid matter:
Variant 1:
Dye solution is heated to 130 ℃ and kept 12 hours at 130 ℃, up to dried residue occurring.Separated 34g exsiccant black product, it easily and fully is dissolved in the water and can be used for dyeing.
Variant 2:
60 ℃ with 100g leuco dye solution and carbon dioxide mix, up to pH<9, dyestuff precipitates fully.Under argon gas, leach sedimentary dyestuff also under reduced pressure 80 ℃ of dryings.Separated 22g exsiccant black product, it easily and fully is dissolved in the dilute aqueous soln of sodium hydroxide and can be used for dyeing.
Preparation embodiment 5 (sample 6)
The aqeous suspension that is used for electrolysis C.I.Vat Blue43 cake of press by the straight-through pond of cationic exchange membrane (Nafion 424) separation.Use thinks that in the 3L water of 50% aqueous sodium hydroxide solution that comprises 8mL and 4mLPrimasol NF wetting agent the C.I.Vat Blue 43 of exsiccant 50.0g begins reaction.Be increased to gradually and in the cumulative volume of 4.6L, think exsiccant 400g C.I.VatBlue 43.The anolyte that uses is aqueous sodium hydroxide solution (1mol/l).Use 100mA/cm 2Current density and the flow velocity electrolysis of 0.2m/s 650 minutes, the concentration of confirmable reducing equivalent is 3 after the electrolysis, is equivalent to the quantity of electric charge that every kilogram of dyestuff is 221.5Ah.So the solution of preparation can be used for painted purpose after need not to add reductive agent in addition or adding minimum reductive agent.
The HPLC spectrum of reaction product is shown among Fig. 6.
Can following reaction product isolated, it is a solid matter:
60 ℃ with 100g dye solution and carbon dioxide mix, up to pH<9, dyestuff precipitates fully.Under argon gas, leach sedimentary dyestuff also under reduced pressure 80 ℃ of dryings.Separated 15g exsiccant mazarine product, it easily and fully is dissolved in the dilute aqueous soln of sodium hydroxide and can be used for dyeing.
Preparation embodiment 6 (sample 7)
Described in DE 101222104, the straight-through pond of using cationic exchange membrane (Nafion 424) separation is with 10mA/cm 2Current density electrolysis C.I.Vat Blue 43 suspension.
The HPLC spectrum of reaction product is shown among Fig. 7.
Preparation embodiment 7
With dye strength is that 100g Leuco Sulfur Black 1 solution (this solution is according to preparation embodiment 4 preparations of DE 102004040601.4 application) of 330g/L is heated to 130 ℃ and kept 12 hours at 130 ℃, up to dried residue occurring.The dry black product that has separated 34g, it easily and fully is dissolved in the water and can be used for dyeing.
Preparation embodiment 8:
60 ℃ make according to preparation embodiment 4 preparations of DE 102004040601.4 application, dye strength be 100g Leuco Sulfur Black 1 solution of 330g/L and carbon dioxide mix up to pH<9, dyestuff precipitates fully.Under argon gas, leach sedimentary dyestuff also under reduced pressure 80 ℃ of dryings.Separated the dry black product of 22g, it easily and fully is dissolved in the dilute aqueous soln of sodium hydroxide, and can be used for dyeing.
Preparation embodiment 9:
60 ℃ make according to preparation embodiment 5 preparations of DE 102004040601.4 application, dye strength after being the 100g reduction of 250g/L C.I.Vat Black 43 solution and carbon dioxide mix up to pH<9, dyestuff precipitates fully.Under argon gas, leach sedimentary dyestuff also under reduced pressure 80 ℃ of dryings.Separated 15g exsiccant mazarine product, it easily and fully is dissolved in the dilute aqueous soln of sodium hydroxide, and can be used for dyeing.
Dyeing
Dip method dyeing with routine
Total amount is 100ml, comprise leuco dye solution according to the C.I.Vat Blue 43 of 16% C.I.SulfurBlack 1 of preparation embodiment 1-5 preparation or l0%, the 2g/l anionic wetting agent, 38 ° of Be caustic soda of 2mI/I, 10ml/l sulfhydrate F 150%, the StabilisalS liq. of 5ml/l, the staining fluid of the sodium sulfate of 30g/l and the complete deionized water of about 50ml, being used in bath raio is that 10: 1 dip-dye method bleaching cotton fabric is as forming the knitted cotton fabric of looped pile, starting temperature at 50 ℃ begins, be heated to 95 ℃ with 2 ℃/minute, then 95 ℃ of dyeing 45 minutes and be cooled to 60 ℃ with 3 ℃/minute subsequently.By aftertreatment, with fabric with about 5 minutes of cold complete deionized water rinse, and then oxidation.For this reason, handle down through hyperchromatic fabric 15 minutes 4.5,70 ℃ of pH with 10: 1 bath raio with the acetic acid of 1% hydrogen peroxide 35% and 2%.Perhaps, also can carry out solid in two hours and vulcanize right fuel oxidation by being blown into air at 60 ℃.
The fabric after the rinsing dyeing 3 to 5 minutes in the complete deionized water of heat subsequently, rinsing 5 minutes at the most in cold complete deionized water is then extracted and dry.
Electrochemistry dyeing
The color pond of 25ml capacity is separated and is had in use by cationic exchange membrane, total surface area is 2m 23 layers of cylindric stainless steel cathode, scribble the titanium electrode of stainless steel mixed oxide and 0.1M NaOH as anolyte, the C.I.Sulfur Black 1 that comprises 540g is that the catholyte of the NaCl of 50% aqueous sodium hydroxide solution of 33% wet mashed prod, 52ml wetting agent, 210ml and 1.56kg carries out electrolysis, cell voltage was about 8 volts when wherein the starting stage was at the pond of 25A electric current, at 25A, and current density is 125mA/cm 2Reduce.During the course, make dye bath cycle through the material that will be colored with about 351/kg, and as the pumping of sewage discharging current by the cathodic area so that dye bath by with catholyte exchange and regeneration constantly, being colored material is that quality is the mtric count 69 cotton yarn packages of 2700g.
Dyeing procedure comprises a plurality of stages:
1. reduce and the heating phase: in this stage, dye bath is elevated to the dyeing temperature that needs, applies the current density that reducing dyes needs simultaneously.
2. dye and cooling stages: carry out actual dyeing courses at 80 ℃.
3. finish: hydrogen peroxide oxidation, rinsing and dry.
The painted L value that so obtains is 27.11, and a value is+0.66, and the b value is-1.95.

Claims (17)

1. colourless sulfur dye composition, it can be at 50mA/cm 2To 500mA/cm 2Current density and 0.1m/s obtain under the flow velocity of 0.4m/s to 2m/s, preferred 0.1m/s.
2. the colourless sulfur dye composition of claim 1, it can be at 50mA/cm 2To 150mA/cm 2Current density and 0.1m/s under the flow velocity of 0.4m/s, obtain.
3. the mixture of the different colourless sulfur dye composition of claim 1.
4. prepare the method for the colourless sulfur dye composition of claim 1, it comprises from the concentration of 20g/l and 0.5mA/cm 2Initial current density begin, and increase continuously concentration to 600g/l with increase continuously current density to 500mA/cm 2
5. the method for the colourless sulfur dye composition of preparation of claim 4, it further comprises the general formula R-S-SO that adds catalytic amount 3N aBunte salt, wherein R represents organic repeated structural unit, as phenthiazone, Buprofezin, thianthrene or phenol _ piperazine ketone minor structure; Or by adding the chemical reducing agent of catalytic amount, for example V-Brite B or organic-sulfinic acid and/or organic sugar.
6. the method for claim 4 and 5 the colourless sulfur dye composition of preparation is wherein used large flat electrode or three-diemsnional electrode in the isolated form electrolyzer.
7. the method for the colourless sulfur dye composition of preparation of claim 4, the basic solution that wherein uses an alkali metal salt is as conducting electrolyte.
8. the method for the colourless sulfur dye composition of preparation of claim 4, wherein electrolysis is carried out under 20 ℃ to 135 ℃ temperature.
9. the method for the colourless sulfur dye composition of preparation of claim 4, wherein electrolysis is carried out under 20 ℃ to 95 ℃ temperature.
10. the quinonimine sulfur dye composition of claim 1, when using C.I.Sulfur Black1 as dye material, the concentration of reducing equivalent is that 150Ah/kg is to 534Ah/kg with respect to the drying solid thioxine dyes of 1kg.
11. the method for quinonimine thioxine dyes after the reduction of the present invention of preparation solid form, by make pH be reduced to≤9 and/or the colourless quinonimine thioxine dyes solution drying behind the electrochemical reduction is carried out.
12. the quinonimine sulfur dye composition of claim 1, when using C.I.Vat Blue 43 as dye material, the concentration of reducing equivalent is that 75Ah/kg is to 225Ah/kg with respect to the drying solid dyestuff of 1kg.
13. comprise the dye formulations of the colourless sulfur dye composition of claim 1.
14. the solid dye preparation comprises with respect to whole product, the colourless sulfur dye composition of water content≤5 weight %, preferred≤2 weight %.
15. to cellulose materials dyeing and method for printing, it comprises the colourless sulfur dye composition that uses claim 1.
16. to the painted method of cellulose materials, it comprises and carries out electrochemical reduction with the direct colourless sulfur dye composition of preparation claim 1 in dye bath.
17. the colourless sulfur dye composition of claim 1 is to the application in cellulose materials dyeing and the stamp.
CN2005100927530A 2004-08-21 2005-08-19 Novel quinonimine sulfur dye compositions, methods for producing them and their use for dyeing cellulose-containing material Expired - Fee Related CN1916082B (en)

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AT398316B (en) * 1989-06-01 1994-11-25 Verein Zur Foerderung Der Fors METHOD FOR REDUCING DYE
US5611818A (en) * 1991-05-23 1997-03-18 Sandoz Ltd. Dry leuco sulphur dyes in particulate form
AT408455B (en) * 1997-09-04 2001-12-27 Basf Ag METHOD FOR REDUCING SULFUR DYES
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