CN102660130A - Method for producing reductive direct black BCN raw dye - Google Patents
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Abstract
A method for producing reductive direct black BCN raw dye comprises the following steps: a. brominating BO (bromine) in a non-organic solvent and a non-inorganic acid to obtain purple anthrone bromide; b. performing solid phase reaction, and performing condensation reaction on the purple anthrone bromide and 1-amino anthraquinone under the action of a catalyst and an acid binding agent to obtain a crude reductive direct black BCN dye; and c. acidifying the crude reductive direct black BCN dye and removing impurities to obtain the reductive direct black BCN raw dye. The method has the advantages as follows: firstly, in the BO brominating process, any organic solvent or any inorganic acid is not used, only an oxidant is added into water, and the bromination speed is high; secondly, the condensation reaction does not need any solvent and can be finished by heating in a solid phase container, so that the condensation reaction is very safe and environment-friendly; and thirdly, after the crude dye is acidified and copper is removed, the heavy metal content meets an ETAD requirement.
Description
Technical field
The invention belongs to technical field of dye, relate to the preparation method of anthraquinone type vat dyes, relate in particular to the working method of a kind of vat direct black BCN.
Background technology
Improving constantly of Along with people's standard of living to the requirement of clothes, also by former durable, changed safety, environmental protection, comfortable, attractive in appearance into; Requirement to dyestuff is also increasingly high.Vat dyes is because be applicable to the dyeing of native cellulose fibre (silk, cotton), and safety, environmental protection, becomes the first-selection of fashion.
The black vat dyes is the kind most important in the vat dyes, that consumption is maximum, wherein most important black kind---vat direct black RB (CASNo.1328-25-2)
Vat direct black RB is used for the dyeing of cotton fibre, and level-dyeing property and avidity are all good, can directly dye black.Also be applicable to the stamp of cotton.Also be used to dye viscose fiber, silk and vinylon and cotton blend fabric and be used for polyester-cotton blend, wash glutinous fabric and dye black and dark-grey, Dry Sack is even.
Its preparation technology is: with vat golden orange G (C.I59700) is main raw material, at first with its bromination, then in the presence of sodium acetate and cupric oxide, contracts with 1-aminoanthraquinone and amino violanthrone and promptly gets product.Through filtering the dry finished product that gets.
This complex manufacturing consumes highly, and seriously polluted, dye yield is low, meets the water drawback that is prone to redden or the like and day by day manifests, and adds the increasingly stringent of environmental regulation, more and more can not meet the need of market and social demand.
In order to address this problem, the company of reaching has researched and developed the vat dyes of each item excellent performance---vat direct black BCN, to replace vat direct black RB.Vat direct black BCN is a new vat dyes, and it does not contain aromatic amine can not decomposite aromatic amine yet, does not contain polychlorobiphenyl, and heavy metal content reaches the ETAD standard, is the dyestuff of an environment-friendly type.B150reactive Black B 150 BCN has excellent dyefastness, particularly its light fastness, crockfastness and chlorine, and to float fastness all good.Also have and meet wet and the little characteristics of flatiron variable color.Be that other black vat dyes is incomparable.Vat direct black BCN can be used in dip-dye, pad dyeing, the stamp of cotton fabric, is particularly suitable for pigment pad dyeing.Should use the first method during dip-dye, add soda ash during dyeing, the dye yield of dyestuff is greatly improved.Vat direct black BCN is a high density dyestuff, can dye system aterrimus or light gray, also can piece together to mix with other vat dyes and use.
The operational path of vat direct black BCN is: 1, the reaction of Vat Dark Blue BO and bromine generates the bromination violanthrone.2, bromination violanthrone and the condensation of 1-aminoanthraquinone get vat direct black BCN dyestuff bullion 3, bullion gets the former dyestuff of vat direct black BCN through acidifying.
There is following problem in former operational path: the composition problem of (1) bromination violanthrone: the technology that the BO bromination is traditional is in the vitriol oil, chlorsulfonic acid or oil of mirbane, to carry out.Because of the oil of mirbane severe toxicity, carcinogenic and bad courage and uprightness are arranged, be eliminated gradually; The vitriol oil is met a large amount of heat releases of water, can boil and spatter, and contacts with combustiblematerials (like sugar, Mierocrystalline cellulose etc.) with inflammable substance (like benzene) vigorous reaction can take place, even cause burning; Chlorsulfonic acid is combustion-supporting, tool severe corrosive, strong and stimulating, and the reaction end needs to decompose with a large amount of sulfuric acid, and the result can produce a large amount of sulfuric acid and hydrochloric acid again, and is quite unfavorable to environment protection.(2) problem of bromination violanthrone and the condensation of 1-aminoanthraquinone: traditional technology is accomplished in oil of mirbane.This reaction is not only poisoned big, and energy consumption is high.(3) heavy metal content problem: traditional technology is without the acidifying copper removal, poach only, and copper content surpasses the ETAD limit standard.
Summary of the invention
The technical problem that solves: to above-mentioned technological deficiency, the present invention provides a kind of method of producing the former dyestuff of vat direct black BCN, and present method need not any organic solvent or mineral acid in the BO bromination process, only in water, adds oxygenant, just can accomplish.And bromination reaction speed is fast.Secondly, condensation reaction is heated in the solid phase device and can be accomplished as safe as a house, environmental protection without any need for solvent.The 3rd, the thick acidified copper removal of dyestuff, heavy metal content reaches the ETAD requirement.
Technical scheme: produce the method for the former dyestuff of vat direct black BCN, step is in mass parts:
The preparation of a, bromination violanthrone: in 14 parts of water, add 1 part of BO filter cake, after the making beating evenly, add 0.3 part of VAL-DROP; 0.7 part bromine is warming up to 70～100 ℃, is incubated 2～6 hours; Be warming up to 80 ℃, bromine is reclaimed in distillation, has steamed; Reduce to room temperature, filtration, washing to neutral, get the bromination violanthrone;
The preparation of b, bullion dyestuff: solid state reaction: add 15～20 parts of bromination violanthrones, 10～13 parts of 1-aminoanthraquinone, 1～3 part of copper catalyst, 3～10 parts of soda ash; Be warming up to 120～130 ℃ of dehydrations; Be warming up to 210～260 ℃ again, be incubated 2～5 hours, be cooled to below 100 ℃; Discharging gets the bullion dyestuff behind the poach;
The preparation of c, the former dyestuff of vat direct black BCN: 1 part of bullion dyestuff, 1～3 part of strong acid is pulled an oar in 10 parts of water, is warming up to 70～100 ℃, is incubated 5 hours, filters, and obtains the former dyestuff of vat direct black BCN.
Among the step a, the optimum temperature of bromination reaction is 80～95 ℃.
Among the step b, the optimum temperature of solid state reaction is 230～250 ℃.
Among the step c, the used strong acid of acidifying removal of impurities is the sulfuric acid of hydrochloric acid or 98%wt, and most suitable reaction temperature is 80～90 ℃.It is following that each goes on foot reaction equation:
Bromination:
Condensation
Beneficial effect:
1, bromination is in water, rather than in oil of mirbane or chlorsulfonic acid, the vitriol oil, carries out, not only save material, and safety, environmental protection, energy-conservation, consumption reduction;
2, solid state reaction is adopted in condensation, need not any solvent, abandon the traditional technology of making solvent with severe toxicity, high boiling oil of mirbane, and reduced poisonous, discharge of harmful gases; Favourable to site environment, health of operators; Practice thrift mass energy, have good economic and social benefit;
3, acidifying removing heavy metals promotes product quality, improves dye shade and application performance, makes it to reach the ETAD standard, has created favourable condition for product exports the America and Europe smoothly.
Description of drawings
Fig. 1 is synthesis route figure of the present invention;
Fig. 2 is dyeing K/S curve, and X-coordinate is an absorbing wavelength, and the nm of unit, ordinate zou are the K/S value.
Embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should declare, these embodiment only are used for the explanation invention and are not used in restriction scope of the present invention.
Embodiment 1
The 250mL there-necked flask (dress TM, reflux exchanger feed chilled brine in the condensing surface, on attach vapor pipe and device for absorbing tail gas; Sour gas such as HBr with the eliminating generation) add entry 210g in, open and stir, add Vat Dark Blue BO 15g; Pulled an oar 2 hours, and added VAL-DROP 4.5g, bromine 10.5g; Be warming up to 70～100 ℃, under 70～100 ℃ of temperature, stirred 5 hours.Distillation recovery bromine is cooled to 50 ℃, and filter, wash to neutral, the dry bromination violanthrone that gets, yield counts 130% with violanthrone.Product is 25.89% (theory is 26.1%) through detecting its bromine content.Product dyes the cotton ruddiness navy blue that is.
Embodiment 2
The 500mL there-necked flask (dress TM, reflux exchanger feed chilled brine in the condensing surface, on attach vapor pipe and device for absorbing tail gas; Sour gas such as HBr with the eliminating generation) add entry 350g in, open and stir, add 25g BO filter cake and pulled an oar 2 hours; Add VAL-DROP 7.5g; Bromine 17.5g is warming up to 70～100 ℃, under 70～100 ℃ of temperature, stirs 6 hours.Bromine is reclaimed in distillation, is cooled to 50 ℃.Filter, wash to neutral, the dry bromination violanthrone that gets, yield counts 132% with violanthrone.Product is 26.32% (theory is 26.1%) through detecting its bromine content.Product dyes the cotton ruddiness navy blue that is.
Embodiment 3
Utilize solid state reaction, add the bromination violanthrone 15g that obtains among the embodiment 1,1-aminoanthraquinone 13g, soda ash 8g, cupric oxide 1g mixes and stirs half a hour, is warming up to 120～130 ℃, dewaters 1 hour, continues to be warming up to 230～260 ℃, is incubated 5 hours.Be cooled to below 60 ℃, discharging obtains 38g dyestuff bullion.
The bullion that obtains is added in the 600mL water, boiled 1 hour, cooling is filtered, and washing is to neutral, and drying obtains the 28g dry product.
Embodiment 4
Utilize solid state reaction, add the bromination violanthrone 20g that obtains among the embodiment 2,1-aminoanthraquinone 13g, soda ash 8g, cupric chloride 1.1g mixes and stirs half a hour, is warming up to 120～130 ℃, dewaters 1 hour, continues to be warming up to 230～260 ℃, is incubated 6 hours.Be cooled to below 60 ℃, discharging obtains 40g dyestuff bullion.
The bullion that obtains is added in the 600mL water, boiled 1 hour, cooling is filtered, and washing is to neutral, and drying obtains the 30g dry product.
Embodiment 5
Stir down,, join and pull an oar in the 200mL water, and the sulfuric acid that adds 25g 98%wt is warmed up to 90 ℃, be incubated 5 hours, cool to 50 ℃, filter, washing is to neutrality the dyestuff dry product 20g that obtains among the embodiment 4.Oven dry gets the former dyestuff of 18g vat direct black BCN.
Embodiment 6 (application example)
In 300mL pottery dye vat, add the former dyestuff among the 0.05g embodiment 5,2mL 5%wt draws back powder solution, 1mL ethanol; Add 200 parts of reduced liquids containing vat powder 0.85g, NaOH1.1g, be warming up to 60 ℃, reduced 15 minutes; Add the 5g cotton fabric, 60 ℃ of dyeing 45 minutes.With fabric washing, atmospheric oxidation with 0.5%wt soap lye soap boiling 15 minutes, is cleaned, and dries, and obtains the black-dyeing article.
These black-dyeing article are compared with reduction vat direct black BCN standard substance, and intensity is 100.6% of standard substance, coloured light Δ a=0.002, Δ b=0.004, dyeing K/S curve consistent with standard substance (Fig. 2).Explanation is vat direct black BCN according to the dyestuff of embodiments of the invention system, and quality index conformance with standard article.
Claims (5)
1. produce the method for the former dyestuff of vat direct black BCN, it is characterized in that step does, in mass parts:
The preparation of a, bromination violanthrone: in 14 parts of water, add 1 part of BO filter cake, after the making beating evenly, add 0.3～0.5 part of VAL-DROP; 0.4～1.4 parts of bromines are warming up to 70～100 ℃, are incubated 2～6 hours; Bromine is reclaimed in 80 ℃ of distillations of temperature; Steamed, reduced to room temperature, filtration, washing, got the bromination violanthrone to neutral;
The preparation of b, thick dyestuff: solid state reaction: add 15～20 parts of bromination violanthrones, 10～13 parts of 1-aminoanthraquinone, 1～3 part of copper catalyst, 3～10 parts of soda ash, be warming up to 120～130 ℃ of dehydrations
,Be warming up to 210～260 ℃ again, be incubated 2～5 hours, be cooled to below 100 ℃, discharging gets the bullion dyestuff behind the poach;
The preparation of c, the former dyestuff of vat direct black BCN: 1 part of bullion dyestuff, 1～3 part of strong acid is pulled an oar in 10 parts of water, is warming up to 70～95 ℃, is incubated 5 hours, filters, and obtains the former dyestuff of vat direct black BCN.
2. the method for production vat direct black BCN according to claim 1 is characterized in that among the step a that the optimum temperature of bromination reaction is 80～95 ℃.
3. the method for production vat direct black BCN according to claim 1 is characterized in that among the step b that the optimum temperature of solid state reaction is 230～240 ℃.
4. the method for production vat direct black BCN according to claim 1 is characterized in that among the step b that the used catalyzer of solid state reaction is copper powder, cupric oxide or cupric chloride.
5. the method for production vat direct black BCN according to claim 1 is characterized in that among the step c, and the used strong acid of acidifying removal of impurities is the sulfuric acid of hydrochloric acid or 98%wt, and most suitable reaction temperature is 80～90 ℃.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104448888A (en) * | 2014-11-29 | 2015-03-25 | 萧县凯奇化工科技有限公司 | Preparation method of vat olive green B |
| CN109608902A (en) * | 2019-01-08 | 2019-04-12 | 徐州工业职业技术学院 | A kind of Anthraquinones reducing dye indigo plant BCR and preparation method |
| CN112266627A (en) * | 2020-09-16 | 2021-01-26 | 徐州工业职业技术学院 | Anthraquinone vat dye black BN and preparation method thereof |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB325525A (en) * | 1928-08-21 | 1930-02-21 | Ig Farbenindustrie Ag | Improvements in the manufacture and production of halogen substitution products of the dibenzanthrone and isodibenzanthrone series |
| GB340262A (en) * | 1929-06-21 | 1930-12-22 | Ig Farbenindustrie Ag | Process for the manufacture and production of dibenzanthrones and isodibenzanthronescontaining chlorine and bromine |
| GB419666A (en) * | 1933-05-10 | 1934-11-12 | Ig Farbenindustrie Ag | Improvements in the manufacture and production of vat dyestuffs |
| GB927019A (en) * | 1960-10-14 | 1963-05-22 | Ciba Ltd | Vat dyestuffs of the dibenzanthrone series and process for their manufacture |
| DE3140897A1 (en) * | 1981-10-15 | 1983-04-28 | Basf Ag, 6700 Ludwigshafen | METHOD FOR USING LIGHT OF THE WAVELENGTHS 470 TO 600 NM FOR THE PHOTOSYNTHESIS |
| DE3337675A1 (en) * | 1982-10-19 | 1984-04-26 | Ciba-Geigy Ag, Basel | Process for the preparation of monoaminoviolanthrone |
| US4851157A (en) * | 1985-12-23 | 1989-07-25 | Ciba-Geigy Corporation | Process for the preparation of vat dyes from brominated dibenzanthrone and 1-aminoanthraquinone |
| SU1766900A1 (en) * | 1990-04-11 | 1992-10-07 | Рубежанский Филиал Научно-Исследовательского Института Органических Полупродуктов И Красителей | Method of dyes synthesis |
| DE4241868A1 (en) * | 1992-12-11 | 1994-06-16 | Basf Ag | Vat dye mixt. for dyeing cotton grey or black - contg. bis-anthraquinonyl:amino-poly:cyclic cpd., and C.I. Vat Black 25, Blue 20 and Green 3 |
| CN1111663A (en) * | 1994-02-12 | 1995-11-15 | Basf公司 | The preparation of chlorinated violanthrones or isoviolanthrones |
| CN1865355A (en) * | 2005-05-16 | 2006-11-22 | 徐州开达精细化工有限公司 | Anthraquinone vat dye 16,17- dibromviolanthrone and 16,17-di(1'-imdoanthraquinonyl) violanthrone and its preparation method |
-
2012
- 2012-04-19 CN CN201210117007.2A patent/CN102660130B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB325525A (en) * | 1928-08-21 | 1930-02-21 | Ig Farbenindustrie Ag | Improvements in the manufacture and production of halogen substitution products of the dibenzanthrone and isodibenzanthrone series |
| GB340262A (en) * | 1929-06-21 | 1930-12-22 | Ig Farbenindustrie Ag | Process for the manufacture and production of dibenzanthrones and isodibenzanthronescontaining chlorine and bromine |
| GB419666A (en) * | 1933-05-10 | 1934-11-12 | Ig Farbenindustrie Ag | Improvements in the manufacture and production of vat dyestuffs |
| GB927019A (en) * | 1960-10-14 | 1963-05-22 | Ciba Ltd | Vat dyestuffs of the dibenzanthrone series and process for their manufacture |
| DE3140897A1 (en) * | 1981-10-15 | 1983-04-28 | Basf Ag, 6700 Ludwigshafen | METHOD FOR USING LIGHT OF THE WAVELENGTHS 470 TO 600 NM FOR THE PHOTOSYNTHESIS |
| DE3337675A1 (en) * | 1982-10-19 | 1984-04-26 | Ciba-Geigy Ag, Basel | Process for the preparation of monoaminoviolanthrone |
| US4851157A (en) * | 1985-12-23 | 1989-07-25 | Ciba-Geigy Corporation | Process for the preparation of vat dyes from brominated dibenzanthrone and 1-aminoanthraquinone |
| SU1766900A1 (en) * | 1990-04-11 | 1992-10-07 | Рубежанский Филиал Научно-Исследовательского Института Органических Полупродуктов И Красителей | Method of dyes synthesis |
| DE4241868A1 (en) * | 1992-12-11 | 1994-06-16 | Basf Ag | Vat dye mixt. for dyeing cotton grey or black - contg. bis-anthraquinonyl:amino-poly:cyclic cpd., and C.I. Vat Black 25, Blue 20 and Green 3 |
| CN1111663A (en) * | 1994-02-12 | 1995-11-15 | Basf公司 | The preparation of chlorinated violanthrones or isoviolanthrones |
| CN1865355A (en) * | 2005-05-16 | 2006-11-22 | 徐州开达精细化工有限公司 | Anthraquinone vat dye 16,17- dibromviolanthrone and 16,17-di(1'-imdoanthraquinonyl) violanthrone and its preparation method |
Non-Patent Citations (2)
| Title |
|---|
| JOHN DAINTITH: "《世界最新英汉双解无机化学词典》", 31 January 2008, 世界图书出版公司 * |
| 张铸勇: "《精细有机合成单元反应》", 30 June 1990, 华东化工学院出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104448888A (en) * | 2014-11-29 | 2015-03-25 | 萧县凯奇化工科技有限公司 | Preparation method of vat olive green B |
| CN109608902A (en) * | 2019-01-08 | 2019-04-12 | 徐州工业职业技术学院 | A kind of Anthraquinones reducing dye indigo plant BCR and preparation method |
| CN112266627A (en) * | 2020-09-16 | 2021-01-26 | 徐州工业职业技术学院 | Anthraquinone vat dye black BN and preparation method thereof |
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