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WO2011072445A1 - 生产还原棕r原染料的方法 - Google Patents

生产还原棕r原染料的方法 Download PDF

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Publication number
WO2011072445A1
WO2011072445A1 PCT/CN2009/075660 CN2009075660W WO2011072445A1 WO 2011072445 A1 WO2011072445 A1 WO 2011072445A1 CN 2009075660 W CN2009075660 W CN 2009075660W WO 2011072445 A1 WO2011072445 A1 WO 2011072445A1
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Prior art keywords
brown
benzoylamino
reduced brown
hours
reaction
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PCT/CN2009/075660
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English (en)
French (fr)
Inventor
项德芝
闫德俊
许崇礼
邵颖
付萍
王洪卫
苏顺利
魏家荣
王昌敬
尚庆合
李剑
窦艳
杜辉
苗金超
刘会
李永伟
李连峰
徐咏梅
张梅
张先续
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XUZHOU KEDAH FINE CHEMICALS Ltd
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XUZHOU KEDAH FINE CHEMICALS Ltd
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Priority to PCT/CN2009/075660 priority Critical patent/WO2011072445A1/zh
Priority to US13/516,775 priority patent/US20120296097A1/en
Publication of WO2011072445A1 publication Critical patent/WO2011072445A1/zh
Anticipated expiration legal-status Critical
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D209/00Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
    • C07D209/56Ring systems containing three or more rings
    • C07D209/80[b, c]- or [b, d]-condensed
    • 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
    • C09B1/00Dyes with anthracene nucleus not condensed with any other ring
    • C09B1/005Di-anthraquinonyl and derivative compounds
    • 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
    • C09B1/00Dyes with anthracene nucleus not condensed with any other ring
    • C09B1/16Amino-anthraquinones
    • C09B1/20Preparation from starting materials already containing the anthracene nucleus
    • C09B1/36Dyes with acylated amino groups
    • C09B1/42Dyes with acylated amino groups the acyl groups being residues of an aromatic carboxylic acid
    • 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
    • C09B1/00Dyes with anthracene nucleus not condensed with any other ring
    • C09B1/50Amino-hydroxy-anthraquinones; Ethers and esters thereof
    • C09B1/51N-substituted amino-hydroxy anthraquinone
    • C09B1/516N-acylated derivatives
    • 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
    • C09B5/00Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings
    • C09B5/24Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings the heterocyclic rings being only condensed with an anthraquinone nucleus in 1-2 or 2-3 position
    • C09B5/2409Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings the heterocyclic rings being only condensed with an anthraquinone nucleus in 1-2 or 2-3 position not provided for in one of the sub groups C09B5/26 - C09B5/62
    • C09B5/2436Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings the heterocyclic rings being only condensed with an anthraquinone nucleus in 1-2 or 2-3 position not provided for in one of the sub groups C09B5/26 - C09B5/62 only nitrogen-containing hetero rings
    • 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
    • C09B5/00Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings
    • C09B5/24Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings the heterocyclic rings being only condensed with an anthraquinone nucleus in 1-2 or 2-3 position
    • C09B5/26Carbazoles of the anthracene series
    • 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
    • C09B5/00Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings
    • C09B5/24Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings the heterocyclic rings being only condensed with an anthraquinone nucleus in 1-2 or 2-3 position
    • C09B5/26Carbazoles of the anthracene series
    • C09B5/28Anthrimide carbazoles
    • 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
    • D06P1/22General 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 vat dyestuffs including indigo
    • D06P1/24Anthraquinone dyes or anthracene nucleus containing vat 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

Definitions

  • the invention belongs to the technical field of dyes, and relates to a preparation method of a quinone type vat dye, in particular to a production method of reducing brown R. Background technique
  • 1,5-Diaminopurine is acylated in nitrobenzene, and 1,5- is produced in almost the same amount (by weight) while obtaining 1-amino-5-benzamide oxime (monoacylate).
  • Dibenzamide hydrazone diacylate
  • the acylation method is changed, and the amount of monoacylate obtained does not exceed 60%, wherein only the monoacylate is a reduced brown R.
  • the intermediate while the diacylate is present as an impurity in the dye, its presence results in low dye strength, dark shade, and need to be removed by secondary oxidation. This not only has low yield but also high energy consumption.
  • the conventional method is to separate the acylation mixture formed by the reaction to obtain a useful monoacylate and a by-product diacylate, and then hydrolyze the diacylate to a 1,5-diaminopurine raw material.
  • the raw materials can be effectively utilized and the cost can be reduced.
  • the separation of the acylation mixture is usually carried out by the principle that the solubility of the monoacylate and the diacylate in nitrobenzene at 120 ° C is different (monoacylate is dissolved in hot nitrobenzene, and the diacylate is insoluble), and separated.
  • the double acylate is further hydrolyzed to 1,5-diaminopurine by high temperature and high pressure, and is recycled after being dried.
  • This process can effectively utilize the main reactant, but the separation operation environment is very harsh, alkaline.
  • the hydrolysis process conditions are quite demanding (high temperature and high pressure), and the reaction time is long and difficult to implement.
  • the process route is shown in Figure 1.
  • the acidic hydrolysis of the present invention has great advantages compared with JP9-268168, and is manifested in the following two points: one is that the monoacyl group does not need to be separated from the diacyl group, and the second is that the obtained monoacyl group has high purity, in the hydrolyzed product.
  • the content accounts for more than 90% wt.
  • Condensation reaction conditions In the current production process, the condensation reaction requires 210 ° C and is kept for 10 hours. High energy consumption, low work efficiency and high environmental pollution.
  • the acylate water is deactivated to form a useful 1-amino-5-benzamide oxime (monoacylate), and a small amount of 1,5-diaminopurine is produced, and 1-amino-5-benzamide is condensed.
  • the benzoyl group will form 1,5-diaminopurine, and its presence tends to cause the dye to be grayish.
  • the solvent used in the condensation step is a nitrobenzene solvent which is carcinogenic and scurvy.
  • the 1,5-diaminodecanoyl compound (a mixture of a monoacylate and a diacylate) is hydrolyzed under acidic conditions without isolation. Yield of 1-amino-5-benzamide oxime.
  • the energy consumption of the reduced brown R condensation reaction can be reduced, the efficiency is improved, and the process is shortened;
  • the reduced brown R dye obtained by the production process of the invention has improved color shade and product quality is improved! 3 ⁇ 4 ;
  • the toxic solvent nitrobenzene can be replaced by a low toxic solvent
  • a method for producing a reduced brown R dye the process steps are as follows: a. 1,5-diaminopurine is subjected to acylation reaction, and then acid hydrolysis is carried out to obtain 1-amino-5-benzoic acid. Acylaminopurine; b. 1-aminopurine by acylation, bromination to give 1-benzoylamino-4-bromoindole; c. 1-amino-5-benzoylaminopurine and 1- The benzoylamino-4-bromoindole is subjected to condensation reaction to obtain a reduced brown R condensate; d. The reduced brown R condensate is subjected to ring closure and oxidation to obtain a reduced brown R dye.
  • Method for producing reduced brown R dye, a, 1-amino-5-benzoylaminopurine To a concentration of 80 to 98% by weight of sulfuric acid, a 1,5-diaminodecanoylation mixture is added.
  • the mass ratio of sulfuric acid to the 1,5-diaminodecanoylation mixture is (6 ⁇ 12): 1, the temperature of the obtained reaction system is adjusted to 15 to 45 ° C, and the temperature is kept for 1 to 4 hours, and the high-efficiency liquid is used for sampling.
  • the content of 1-benzoylamino-4-bromoindole in the filter cake is 95. % wt, add copper catalyst, then heat the condensation reaction at 170 ⁇ 185 °C for 2 ⁇ 6 hours, sample, and check with high performance liquid chromatography, when the reaction product is 1-benzoylamino-4-bromoindole balance l%wt, and 1-amino-5-benzoylamino oxime balance l%wt is the condensation end point, after the condensation is completed, the o-dichlorobenzene is distilled off, and the condensation product is washed with water, washed to neutrality, and dried.
  • Black reduction brown R condensate; c preparation of reduced brown R ring closure: adding black reduced brown R condensate to sulfuric acid having a concentration of 80 to 98% wt, and adjusting the temperature of the reaction system to 15 to 35 ° C, Insulation for 5 ⁇ 10 hours, after the end of the heat preservation, dilute the reaction system materials, suction filtration, wash the reaction product to neutral, and obtain a reduced brown R ring closure; d, oxidation step: add sulfuric acid to the water to control the sulfuric acid concentration to 20% ⁇ 40 %wt, then add reduced brown R ring closure, mixing and stirring for 0.5 hours to 2 hours Then, the temperature is raised to 50 ⁇ 80 ° C, and the oxidizing agent is added: sodium chlorate, sodium dichromate or potassium dichromate, and then the temperature is raised to 80 to 95 ° C, and the aqueous solution of the above oxidizing agent is added dropwise, and the temperature is kept for 2 to 6 hours.
  • the above 1,5-diaminodecanoylation mixture is a mixture of 1-amino-5-benzoylaminopurine and 1,5-dibenzoylaminopurine in a mass ratio of 54:46.
  • the amount of the acid-binding agent added for the first time is 1 to 3 times the molar amount of the hydrolyzate
  • the second time The amount of the acid binding agent is 1 to 6 times the molar amount of 1-benzoylamino-4-bromoindole
  • the acid binding agent is sodium carbonate, sodium hydrogencarbonate, potassium carbonate, magnesium oxide, calcium oxide, acetic acid.
  • the acid binding agent is sodium carbonate, sodium hydrogencarbonate, potassium carbonate, magnesium oxide, calcium oxide, acetic acid.
  • the acid binding agent is sodium carbonate, sodium hydrogencarbonate, potassium carbonate, magnesium oxide, calcium oxide, acetic acid.
  • step a the temperature of the sulfuric acid is 5 to 15 ° C;
  • step b the molar ratio of 1-benzoylamino-4-bromoindole to hydrolyzate is 1: (1 ⁇ 1.5); molar ratio of 1-benzoylamino-4-bromoindole to benzoyl chloride Not higher than 5:1; the molar ratio of 1-benzoylamino-4-bromoindole to copper catalyst is 1: (0.02 ⁇ 0.08);
  • the mass of solvent o-dichlorobenzene is the mass of all materials in the reaction system. ⁇ 10 times;
  • step c the temperature of the sulfuric acid is 5 to 20 ° C;
  • step c the amount of sulfuric acid is 4 to 8 times the mass of the black reduced brown R condensate.
  • Applicants have improved the hydrolysis process of acylate, that is, to abandon alkaline hydrolysis, and adopt acidic hydrolysis, the operation steps are as follows: Add 1,5-diaminodecanoyl to sulfuric acid having a concentration of 80 to 98% by weight The mixture was adjusted to a temperature of 10 to 45 ° C, and kept for 1 to 4 hours. High performance liquid chromatography was used to detect 1-amino-5-benzoylaminopurine, 1,5-diphenyl. The content of amidoguanidine and 1,5-diaminopurine is controlled to control the mass percentage of 1,5-dibenzoylaminopurine in the whole system to 5%.
  • the reaction product was diluted, filtered, and washed to neutrality, and dried to obtain a hydrolyzate in which the content of 1-amino-5-benzoylaminopurine was 90% in the entire system.
  • the reduced brown R color obtained by the condensation, ring closure, and oxidation of the hydrolyzed product is vivid, and the strength reaches 300 to 330%.
  • the reduced brown R strength obtained by the old process is only 220 ⁇ 260%.
  • the hydrolysis method has mild reaction conditions and short time, and is usually hydrolyzed at room temperature for 1 to 4 hours, and the product has high purity and is superior to similar products on the market.
  • the process route is shown in Figure 2.
  • acylate water is deactivated to form a useful 1-amino-5-benzamide oxime (monoacylate), and a small amount of 1,5-diaminopurine is produced, and 1-amino-5-benzoic acid is condensed.
  • Amido hydrazine also has the possibility of debenzoylamino group to form 1,5-diaminopurine, its presence tends to cause the dye shade to be dark, and the reaction is added
  • a little benzoyl chloride can greatly improve the dye shade and improve the quality of the product.
  • Clean production is achieved by using a low-toxic o-dichlorobenzene solvent instead of a carcinogenic and septic nitrobenzene solvent.
  • the produced reduced brown R product has excellent quality, high strength and bright and beautiful color.
  • the yield is increased and the cost of raw materials is reduced by more than 30%.
  • the new route is:
  • a mixture of 1-amino-5-benzoylaminopurine and 1,5-dibenzoylaminopurine is hydrolyzed under acidic conditions without first separating it in a high temperature, highly toxic solvent, directly in Hydrolysis in sulfuric acid, wherein the desired 1-amino-5-benzoylaminopurine is retained, and the undesired 1,5-diaminopurine is hydrolyzed to the desired 1-amino-5-benzoylamino group.
  • 1-amino-5-benzoylamino group obtained by the acidic hydrolysis method The purity of hydrazine is higher, so the final product is reduced by brown R color.
  • the yield is two.
  • the condensation production process is heated by oil.
  • the original production process needs to be heated to 205 ° C ⁇ 210 ° C for 10 minutes, then cooled to 180. °C, this process takes more than 10 hours, consumes a lot of energy, and the temperature of the condensation reaction is reduced to 170 ⁇ 185 °C, and the reaction time is shortened by more than ten hours. The energy saving effect is remarkable.
  • a small amount of benzoyl chloride is added to the condensation reaction, which greatly improves the dye shade and improves the product quality.
  • the one-step oxidation process is omitted, a large amount of oxidant is saved, a large amount of wastewater is discharged, and it is very beneficial to protect the environment; at the same time, the product yield is greatly increased; the raw material cost is reduced by more than 30%.
  • Figure 1 is a synthesis scheme of 1-amino-5-benzamide oxime (monoacylate);
  • Figure 2 is a flow chart showing the improvement of the synthesis of 1-amino-5-benzamide oxime (monoacylate). Specific embodiment:
  • Example 4 After distilling out most of the o-dichlorobenzene, steam distillation is carried out, and the o-dichlorobenzene is distilled off, filtered, washed. To neutral, drying to obtain a black reduced brown R condensate 16 ⁇ 19g. The condensate is subjected to a two-step process of ring closure and oxidation to obtain a reduced brown R dye.
  • the product quality is similar to that of Example 2, and the strength and color are similar, indicating that the use of o-dichlorobenzene for condensation instead of nitrobenzene as a solvent has no effect on product quality. .
  • Example 4 Example 4
  • Example 1 In a 250 mL three-necked flask (with a thermometer, a reflux condenser, a condenser, a cold water, an exhaust pipe and an exhaust gas absorption device, to remove HC1, HBr from the reaction), add 120 g of o-dichlorobenzene, stir, add The hydrolyzate obtained in Example 1 is 7 ⁇ 7.5g, the temperature is raised to 140 ⁇ 145°C, 4g of soda ash is added, the heat is added for half an hour, the temperature is raised to 150 ⁇ 155°C, benzoyl chloride is added 0.1 ⁇ lg, and at 150 ⁇ Incubate at 155 °C for 1 to 2 hours.
  • Example 5 After distilling out most of the o-dichlorobenzene, it is steam distilled, steamed o-dichlorobenzene, filtered, washed. To neutral, dry to obtain 15 ⁇ 19g of black reduced brown R condensate. The condensate obtained a reduced brown R raw dye by a two-step process of ring closure and oxidation, and the product quality was improved by 5% compared with Example 3. It is indicated that the complex acid binding agent is better in the condensation reaction.
  • Example 5 Example 5
  • the nitrobenzene is distilled under reduced pressure, and the degree of vacuum is about -0.06 ⁇ -O.OSMPa.
  • steam distillation is carried out, and the nitrobenzene is distilled off, filtered, and washed. Sex, dried to give a black reduced brown R condensate 15 ⁇ 19g.
  • the condensate was subjected to a two-step process of ring closure and oxidation to obtain a reduced brown R dye.
  • Example 7 In a 250 mL three-necked flask (with a thermometer, stirring), add 90 to 98% by weight of sulfuric acid, 100 mL, stir, and cool to below 20 ° C in an ice bath, and add the reduced brown R condensate obtained in Example 2 or 3 or 4. 30g, after the addition, remove the ice bath, adjust the temperature to 10 ⁇ 45 °C, keep warm for 5 ⁇ 10 hours, after the end of the heat preservation, dilute the material in 500 mL water, filter, wash to neutral, get the reduced brown R closed loop 28 ⁇ 29.5g. The shade is similar to the standard and the strength is 100 ⁇ 5% of the standard.
  • Example 7 The shade is similar to the standard and the strength is 100 ⁇ 5% of the standard.
  • the cotton fabric is dyed in a bright brown-red color. It is not only used for dyeing single color, but also for color matching of various dyes. It is an important variety in brown vat dyes.
  • Example 7 1 part of the dye of Example 7 was added to a 300 mL ceramic dyeing tank, 20 parts of 5% wt pull powder solution, 18 parts of ethanol, and 2000 parts of reducing solution containing 0.85 g of insurance powder and 1.5 g of sodium hydroxide were added, and the temperature was raised to 60. °C, reduction for 15 minutes, adding 50 parts of cotton fabric, dyeing at 60 ° C for 45 minutes. The fabric was washed, air oxidized, boiled with 0.5% by weight soap for 15 minutes, washed, and naturally dried to give a brown dyed product. The intensity is 100 ⁇ 3% of the standard, and the shade is similar to the standard.
  • Example 8 1 part of the dye of Example 7 was added to a 300 mL ceramic dyeing tank, 20 parts of 5% wt pull powder solution, 18 parts of ethanol, and 2000 parts of reducing solution containing 0.85 g of insurance powder and 1.5 g of sodium hydroxide were added, and the temperature was raised to 60. °C, reduction for 15 minutes, adding
  • Method for producing reduced brown R dye, a, 1-amino-5-benzoylaminopurine To 1,5-diaminodecanoylation to sulfuric acid at a concentration of 80% wt, 5 ° C a mixture, the 1,5-diaminodecanoylation mixture is a mixture of 1-amino-5-benzoylaminopurine and 1,5-dibenzoylaminopurine in a mass ratio of 54:46, sulfuric acid The mass ratio of the 1,5-diaminodecanoylation mixture is 6:1. The temperature of the obtained reaction system is adjusted to 15 ° C, kept for 1 to 4 hours, sampled, and the 1-amino group is detected by high performance liquid chromatography.
  • the acid bromide filter cake is 1-benzoylamino-4-bromoindole, acylated by 1-aminoindole, bromine Obtained, the content of 1-benzoylamino-4-bromoindole in the filter cake is 95% wt, and then a copper catalyst is added, and then the condensation reaction is held at 170 ° C for 2 hours, sampled, and detected by high performance liquid chromatography.
  • the condensation end point is distilled off after the condensation is completed.
  • the amount of the first acid addition agent is 1 times the molar amount of the hydrolyzate, the second addition of the acid binding agent
  • the amount is 1-fold of the amount of 1-benzoylamino-4-bromoindole, which is one of sodium carbonate, sodium hydrogencarbonate, potassium carbonate, magnesium oxide, calcium oxide, sodium acetate, and pyridine. Any kind of mixture of two or two.
  • the molar ratio of 1-benzoylamino-4-bromoindole to hydrolyzate is 1:1; the molar ratio of 1-benzoylamino-4-bromoindole to benzoyl chloride is 4:1; 1-phenylene
  • the molar ratio of amido-4-bromoindene to copper catalyst is 1: 0.02; the mass of solvent o-dichlorobenzene is 5 times the mass of all materials in the reaction system.
  • the acid bromide filter cake and the acid binding agent are heated to 180 ° C, and the acid bromide filter cake is 1-benzoylamino-4-bromoindole, which is acylated and brominated from 1-aminoindole.
  • the content of 1-benzoylamino-4-bromoindole in the filter cake is 95% wt, and then adding a copper catalyst, then holding the condensation reaction at 180 ° C for 4 hours, sampling, and detecting by high performance liquid chromatography, when the reaction
  • the amount of 1-benzoylamino-4-bromoindole in the product is 1% by weight, and the remaining amount of 1-amino-5-benzoylamino hydrazine is 1%wt, which is the condensation end point.
  • the o-dichloro group is distilled off. Benzene, and then suction filtration, washing the condensation product to neutral, and drying to obtain a black reduced brown R condensate; the amount of the first acid addition agent is twice the molar amount of the hydrolyzate, and the amount of the second acid addition agent is added. Is 3 times the molar amount of 1-benzoylamino-4-bromoindole, one of sodium carbonate, sodium hydrogencarbonate, potassium carbonate, magnesium oxide, calcium oxide, sodium acetate, pyridine or Mixture of any two ratios.
  • the molar ratio of 1-benzoylamino-4-bromoindole to hydrolyzate is 1:1.2; the molar ratio of 1-benzoylamino-4-bromoindole to benzoyl chloride is 3:1; 1-benzoic acid
  • the molar ratio of amido-4-bromoindole to copper catalyst is 1: 0.06; the mass of solvent o-dichlorobenzene is 8 times the mass of all materials in the reaction system.
  • Method for producing reduced brown R dye, a, 1-amino-5-benzoylaminopurine To 1,5-diaminoguanidine to sulfuric acid having a concentration of 98% wt, 5 to 15 ° C An acylation mixture, the 1,5-diaminodecanoylation mixture is a mixture of 1-amino-5-benzoylaminopurine and 1,5-dibenzoylaminopurine in a mass ratio of 54:46
  • the mass ratio of sulfuric acid to 1,5-diaminodecanoylation mixture is 12: 1, the temperature of the obtained reaction system is adjusted to 45 ° C, kept for 4 hours, sampled, and 1-amino group is detected by high performance liquid chromatography.
  • the acid bromide filter cake is 1-benzoylamino-4-bromoindole, acylation, bromination from 1-aminoindole
  • the content of 1-benzoylamino-4-bromoindole in the filter cake is 95% wt, and then adding a copper catalyst, then holding the condensation reaction at 185 ° C for 6 hours, sampling, and detecting by high performance liquid chromatography.
  • the residual amount of 1-benzoylamino-4-bromoindole in the reaction product is 1% by weight, and the remaining amount of 1-amino-5-benzoylamino hydrazine is 1% by weight, and the condensation end is distilled off to remove the adjacent two.
  • the amount of the first acid addition agent is 3 times the molar amount of the hydrolyzate
  • the second addition of the acid binding agent The amount is 6 times the molar amount of 1-benzoylamino-4-bromoindole
  • the acid binding agent is one of sodium carbonate, sodium hydrogencarbonate, potassium carbonate, magnesium oxide, calcium oxide, sodium acetate, and pyridine. Or a mixture of any two ratios.
  • the molar ratio of 1-benzoylamino-4-bromoindole to hydrolyzate is 1:1.5; the molar ratio of 1-benzoylamino-4-bromoindole to benzoyl chloride is 5:1; 1-benzene The molar ratio of formylamino-4-bromoindole to copper catalyst is 1:0.08; the mass of solvent o-dichlorobenzene is 10 times the mass of all materials in the reaction system. c.

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Abstract

一种还原棕R原染料的生产方法,工艺步骤为:a.1,5-二氨基蒽醌经酰化反应后,再采用酸性水解的方式制得1-氨基-5-苯甲酰氨基蒽醌;b.1-氨基蒽醌经酰化、溴化反应得到1-苯甲酰氨基-4-溴蒽醌;c.1-氨基-5-苯甲酰氨基蒽醌与1-苯甲酰氨基-4-溴蒽醌经缩合反应得还原棕R缩合物;d.还原棕R缩合物经闭环、氧化反应得还原棕R原染料。省去一步氧化工序,节约了大量氧化剂,减少了大量的废水的排放,对保护环境非常有利;同时产品收率大幅提高;原材料成本下降30%以上。

Description

生产还原棕 R原染料的方法
技术领域
本发明属于染料技术领域, 涉及蒽醌型还原染料的制备方法, 尤其涉及 一种还原棕 R的生产方法。 背景技术
还原棕 R作为还原染料中一只重要的棕色品种, 随着市场的变化, 原生 产工艺收率低, 消耗高的弊端日渐显现, 再加上环保法规的日益严格, 现有 生产能力不能有效满足国内外市场 (特别是产品出口) 的需求。
还原棕 R的传统工艺路线为:
( 1 ) 1,5-二氨基蒽醌酰化, 得到酰化物 (I) (包括大约 54%的 1-氨基 -5- 苯甲酰氨基蒽醌、 46%的 1,5-二苯甲酰氨基蒽醌及 0.5%以下未反应的 1,5-二氨 基蒽醌);
(2) 1-氨基蒽醌酰化一溴化一过滤, 得到酰溴化物 (II);
(3 ) (I) 与 (II) 缩合一蒸馏一过滤一水洗一干燥一闭环一一次氧化一 过滤一水洗一二次氧化一过滤一水洗一干燥。
1、 1-氨基 -5-苯甲酰胺基蒽醌 (单酰化物) 的合成问题
1,5-二氨基蒽醌在硝基苯中酰化, 在得到 1-氨基 -5-苯甲酰胺基蒽醌(单酰 化物) 的同时, 几乎相同量 (重量)地产生 1,5-二苯甲酰胺基蒽醌 (双酰化物), 即使控制酰化剂用量, 改变酰化方法, 得到的单酰化物的量也不会超过 60%, 其中只有单酰化物是还原棕 R有用的中间体, 而双酰化物是作为杂质存在于 染料中的, 它的存在, 导致染料强度低, 色光灰暗, 需通过二次氧化去除。 这样不仅收率低、 能耗也很大。
为了解决上述问题, 传统方法就是将反应生成的酰化混合物进行分离, 分别得到有用的单酰化物和副产物双酰化物,再将双酰化物水解为 1,5-二氨基 蒽醌原料, 这样可以使原料得以有效利用, 降低了成本。 酰化混合物的分离, 通常是利用单酰化物、 双酰化物在 120°C硝基苯中的溶解度不同的原理进行 (单酰化物溶于热硝基苯,而双酰化物不溶),分离出的双酰化物再通过高温、 高压碱性水解成 1,5-二氨基蒽醌, 干燥后循环利用, 采用这种工艺, 虽能使主 反应物有效利用, 但分离操作环境非常恶劣, 碱性水解工艺条件相当苛刻(高 温高压), 反应时间长, 难以实施。 工艺路线如图 1所示。
通过文献检索, 査到日本专利 JP9-268168 ( 1997年), 是关于双酰化物水 解的, 用的是酸性水解的方式, 但水解的前提是必须先将单酰化物和双酰化 物分离, 然后只将双酰物在硫酸中水解成单酰物, 得到的产品纯度不高, 最 高只有 83%wt。 由于单酰物与双酰物分离要在 120°C硝基苯中进行, 硝基 苯又是剧毒化学品, 特别是在高温条件下危害更大, 因此用该专利的方式生 产单酰化物在实际生产上有一定难度。
本发明的酸性水解与 JP9-268168相比, 具有巨大的优越性, 表现在以下 两点: 一是单酰物与双酰不需要分离, 二是所得到的单酰物纯度高, 在水解 产物含量中占到 90% wt以上。
2、 缩合反应条件问题: 目前生产工艺中, 缩合反应需要 210°C, 保温 10 小时。能耗高、工作效率低且环境污染大。酰化物水解除生成有用的 1-氨基 -5- 苯甲酰胺基蒽醌 (单酰化物), 还有少量的 1,5-二氨基蒽醌产生, 缩合时 1-氨 基 -5-苯甲酰胺基蒽醌也有脱苯甲酰基生成 1,5-二氨基蒽醌的可能, 它的存在 易导致染料色光灰暗。
3、 缩合工序中所使用的溶剂为硝基苯溶剂, 其具有致癌和坏血性。
4、 经过两次氧化, 产品收率低。 发明内容
发明目的: 针对上述技术缺陷, 本申请的发明目的如下:
1.在本发明生产还原棕 R原染料的过程中, 由 1,5-二氨基蒽醌酰化物(单 酰化物与双酰化物的混合物), 不经分离, 在酸性条件下低温水解, 提高 1-氨 基 -5-苯甲酰胺基蒽醌的收率。
2.在本发明生产还原棕 R原染料的过程中, 1-氨基 -5-苯甲酰胺基蒽醌与 1-苯甲酰氨基 -4-溴蒽醌在有机溶剂中, 以铜粉或铜盐作催化剂, 在缚酸剂存 在下而缩合, 并经硫酸闭环、 氧化剂氧化得到还原棕 R原染料。
3.在本发明生产还原棕 R原染料的过程中, 可以减少还原棕 R缩合反应 能耗、 提高效率, 缩短工序;
4.本发明生产工艺得到的还原棕 R原染料,色光得到改善,产品质量得到 提! ¾ ;
5.在本发明生产还原棕 R原染料的过程中,能够用低毒溶剂代替剧毒溶剂 硝基苯;
6.本发明工艺提高了产品收率。 技术方案: 一种还原棕 R原染料的生产方法, 工艺步骤为: a. 1,5-二氨基 蒽醌经酰化反应后, 再采用酸性水解的方式制得 1-氨基 -5-苯甲酰氨基蒽醌; b. 1-氨基蒽醌经酰化、 溴化反应得到 1-苯甲酰氨基 -4-溴蒽醌; c. 1-氨基 -5-苯 甲酰氨基蒽醌与 1-苯甲酰氨基 -4-溴蒽醌经缩合反应得还原棕 R缩合物; d. 还 原棕 R缩合物经闭环、 氧化反应得还原棕 R原染料。
还原棕 R原染料的生产方法, a、 1-氨基 -5-苯甲酰氨基蒽醌的制备: 向浓 度为 80〜98% wt的硫酸中加入 1,5-二氨基蒽醌酰化混合物, 硫酸与 1,5-二氨 基蒽醌酰化混合物的质量比为 (6〜12): 1, 将所得反应体系的温度调整至 15〜 45°C,保温 1〜4小时,取样,用高效液相色谱检测 1-氨基 -5-苯甲酰氨基蒽醌、 1,5-二苯甲酰氨基蒽醌及 1,5-二氨基蒽醌的含量, 当 1,5-二苯甲酰氨基蒽醌在 整个体系中的质量百分含量 5%为反应终点, 终点到后, 稀释、 过滤, 洗涤 反应产物至中性, 干燥得到水解产物; b、 还原棕 R缩合物的制备: 向邻二氯 苯中, 加入上步制备得到的水解产物, 升温至 110〜150°C脱水, 加入缚酸剂, 保温 0.5小时〜 2小时后升温至 150〜155°C, 加苯甲酰氯, 并在 150〜155°C 保温 1〜2小时后, 加入酰溴化物滤饼和缚酸剂, 升温至 170〜185°C, 所述酰 溴化物滤饼为 1-苯甲酰氨基 -4-溴蒽醌, 由 1-氨基蒽醌经过酰化、溴化而得到, 滤饼中 1-苯甲酰氨基 -4-溴蒽醌含量 95% wt, 再加铜催化剂, 然后在 170〜 185°C保温缩合反应 2〜6 小时, 取样, 用高效液相色谱检测, 当反应产物中 1-苯甲酰氨基 -4-溴蒽醌余量 l%wt,且 1-氨基 -5-苯甲酰氨基蒽醌余量 l%wt 为缩合终点, 缩合完成后蒸馏除去邻二氯苯, 再抽滤、 水洗缩合产物至中性, 烘干得到黑色还原棕 R缩合物; c、 还原棕 R闭环物的制备: 向浓度为 80〜 98% wt的硫酸中, 加入黑色还原棕 R缩合物, 将反应体系的温度调整至 15〜 35°C, 保温 5〜10 小时, 保温结束, 将反应体系物料稀释, 抽滤、 洗涤反应 产物至中性, 得到还原棕 R闭环物; d、 氧化步骤: 向水中加入硫酸, 控制硫 酸浓度为 20%〜40%wt,再加入还原棕 R闭环物,混合搅拌 0.5小时〜 2小时, 然后升温至 50〜80°C, 加氧化剂: 氯酸钠、 重铬酸钠或重铬酸钾, 再升温至 80〜95°C, 滴加上述氧化剂的水溶液, 保温 2〜6小时, 所述氧化剂的总加入 量与还原棕 R闭环物的质量比为 1 : ( 1〜2.5 ), 抽滤、 洗涤反应产物至中性, 干燥得到深红色还原棕 R原染料。
上述 1,5-二氨基蒽醌酰化混合物是 1-氨基 -5-苯甲酰氨基蒽醌和 1,5-二苯 甲酰氨基蒽醌以质量比 54: 46的混合物。
步骤 b中, 第一次加入缚酸剂的量为水解物摩尔用量的 1〜3倍, 第二次 加入缚酸剂的量为 1-苯甲酰氨基 -4-溴蒽醌摩尔用量的 1〜6倍,所述缚酸剂是 碳酸钠、 碳酸氢钠、 碳酸钾、 氧化镁、 氧化钙、 醋酸钠、 吡啶中的一种或两 种的任意比混合物。
步骤 a中, 硫酸的温度是 5〜15 °C ;
步骤 b中, 1-苯甲酰氨基 -4-溴蒽醌与水解物的摩尔比为 1 : ( 1〜1.5 ); 1- 苯甲酰氨基 -4-溴蒽醌与苯甲酰氯的摩尔比不高于 5: 1 ; 1-苯甲酰氨基 -4-溴蒽醌 与铜催化剂的摩尔比为 1 : (0.02〜0.08); 溶剂邻二氯苯的质量是反应体系全 部物料的质量的 5〜10倍;
步骤 c中, 硫酸的温度是 5〜20°C ;
步骤 c中, 硫酸的用量是黑色还原棕 R缩合物质量的 4〜8倍。
申请人对还原棕 R各步反应进行深入的分析和研究, 现对合成工艺的各 项改进进行说明:
1、 1-氨基 -5-苯甲酰胺基蒽醌 (单酰化物) 的合成改进
申请人对酰化物的水解工艺进行了改进, 即摒弃碱性水解, 而采取酸性 水解的方式, 操作步骤如下: 向浓度为 80〜98% wt的硫酸中加入 1,5-二氨基 蒽醌酰化混合物, 将所得反应体系的温度调整至 10〜45°C, 保温 1〜4小时, 用高效液相色谱法检测 1-氨基 -5-苯甲酰氨基蒽醌, 1,5-二苯甲酰氨基蒽醌及 1,5-二氨基蒽醌的含量, 控制 1,5-二苯甲酰氨基蒽醌在整个体系中的质量百分 含量 5%为反应终点。 终点到后, 稀释、 过滤, 洗涤反应产物至中性, 干燥 得到水解物, 其中 1-氨基 -5-苯甲酰氨基蒽醌在整个体系中的含量 90%。 用 这种水解产物去进行缩合、 闭环、 氧化得到的还原棕 R色光鲜艳, 强度达到 300〜330%。 而老工艺得到的还原棕 R强度只有 220〜260%。
采用该水解方法反应条件温和, 时间短, 通常在常温条件下水解 1〜4小 时即可完成, 产品纯度高, 优于市场上的同类产品。 工艺路线如图 2所示。
2、 缩合反应条件的改进
①通过纯化主要反应原材料 (1-氨基 -5-苯甲酰胺基蒽醌)、 改用低沸点的 邻二氯苯代替高沸点的硝基苯, 将缩合反应由原来的 210°C, 保温 10小时, 改进为 170〜185°C,保温 2〜6小时。这一改进不仅降低能源消耗,改善环境, 而且工作效率也提高了很多。
②酰化物水解除生成有用的 1-氨基 -5-苯甲酰胺基蒽醌(单酰化物), 还有 少量的 1,5-二氨基蒽醌产生, 缩合时 1-氨基 -5-苯甲酰胺基蒽醌也有脱苯甲酰 氨基生成 1,5-二氨基蒽醌的可能, 它的存在易导致染料色光灰暗, 反应中加入 少许苯甲酰氯, 即能大大改善染料色光, 提高了产品质量。
3、 缩合工序的溶剂筛选
使用低毒害的邻二氯苯溶剂代替有致癌和坏血性的硝基苯溶剂, 实现了 清洁生产。
4、 省去二次氧化工序
研究发现, 在缩合所用的原材料纯度提高以后, 通过一次氧化, 产品的 质量已接近标准品, 故二次氧化步骤可以省去, 这样不仅节省了大量氧化剂 的使用, 提高了产品收率, 还减少了污水的排放。
通过以上工艺改进, 生产出的还原棕 R的产品质量优异, 强度高, 色光 鲜艳靓丽。 收率提高, 原材料成本降低 30%以上。
新的工艺路线为:
( 1 ) 1,5-二氨基蒽醌酰化一蒸馏一过滤一水洗一干燥一水解一稀释一过 滤一水洗一干燥, 得到单酰化物 (I) ;
(2) 1-氨基蒽醌酰化一溴化一过滤, 得到酰溴化物 (II);
(3 ) (I) 与 (II) 缩合一蒸馏一过滤一水洗一干燥一闭环一氧化一过滤 水洗一干燥, 得到原染料
各步反应方程式如下:
1,5-二 :
Figure imgf000007_0001
水解:
Figure imgf000007_0002
1-氨基蒽醌酰化、 溴化:
Figure imgf000008_0001
有益效果:
一、 1-氨基 -5-苯甲酰氨基蒽醌和 1,5-二苯甲酰氨基蒽醌的混合物在酸性条 件下水解, 事先不必先将其在高温、 剧毒溶剂中分离, 直接在硫酸中水解, 其中需要的 1-氨基 -5—苯甲酰氨基蒽醌得到保留,而不需要的 1,5-二氨基蒽醌 则水解为所需要的 1-氨基 -5-苯甲酰氨基蒽醌, 而没有像碱性水解那样水解成 1,5-二氨基蒽醌, 是一种最经济、 实用的水解方法; 用该酸性水解方法, 得到 的 1-氨基 -5-苯甲酰氨基蒽醌纯度较高, 因此最终产物还原棕 R色光好, 收率 二、 缩合生产过程中是用油加热的, 原生产工艺需要升温到 205°C〜210 °C保持 10分钟, 再降温至 180°C, 这个过程需要 10多个小时, 耗费大量的能 源, 改进后缩合反应温度降至 170〜185 °C, 反应时间缩短十几小时, 节能效 果显著。 三、 在缩合反应中加入少许苯甲酰氯, 大大改善染料色光, 提高了产品 质量。
四、 摒弃以剧毒、 高沸点的硝基苯作溶剂的传统工艺, 减少了有毒、 有 害气体的排放; 对现场环境、 操作人员的身体健康有利; 节约大量能源, 具 有很好的经济和社会效益;
五、 省去一步氧化工序, 节约了大量氧化剂, 减少了大量的废水的排放, 对保护环境非常有利; 同时产品收率大幅提高; 原材料成本下降 30%以上。 附图说明
图 1是 1-氨基 -5-苯甲酰胺基蒽醌 (单酰化物) 的合成流程图;
图 2是 1-氨基 -5-苯甲酰胺基蒽醌 (单酰化物) 的合成改进流程图。 具体实施例:
下面结合具体实施例, 进一步阐述本发明。 应申明, 这些实施例仅用于 说明发明而不用于限制本发明的范围。
实施例 1
在 250mL三口烧瓶(装有温度计、搅拌)中加入 90〜98% wt硫酸 110 mL, 开搅拌, 冰浴降温至 15°C以下, 加入 1,5-二氨基蒽醌酰化混合物 18g , 加完, 撤去冰浴, 将温度调整至 10〜45°C, 保温 1〜4小时, 取样, 用液相色谱法检 测 1-氨基 -5-苯甲酰氨基蒽醌、 1,5-二苯甲酰氨基蒽醌及 1,5-二氨基蒽醌含量, 控制 1,5-二苯甲酰氨基蒽醌 5%wt为反应终点。 反应终点到后, 将物料稀释 于 500 mL水中, 抽滤、 洗涤至中性, 干燥, 得到的水解物 15g, 液相色谱检 测, 其中 1-氨基 -5-苯甲酰氨基蒽醌含量 90.30%wt。 1,5-二氨基蒽醌 4.52% wt, 1,5-二苯甲酰氨基蒽醌 3.95% wt。 实施例 2
在 250mL三口烧瓶(装温度计、 搅拌、 回流冷凝器, 冷凝器内通入冷水, 上附排气管及尾气吸收装置, 以排除反应可能生成的 HC1、 HBr ) 中加硝基 苯 120g, 开搅拌, 加实施例 1 中所得水解物 7〜7.5g, 升温至 140〜145°C, 加纯碱 4g, 加完保温半小时, 升温至 150〜155°C, 加苯甲酰氯 0.1〜lg, 并 在 150〜155°C保温 1〜2小时。 加酰溴化物滤饼 7.5g ( 1-苯甲酰氨基 -4-溴蒽醌 含量 95%wt)、 无水醋酸钠 1.5g, 升温至 175〜183°C, 加铜粉 0.1〜0.5g, 然 后在 175〜183°C保温 2〜6小时。 取样做色谱, 溴化物余量 l%wt 、 单酰物 余量 l%wt 为缩合终点。 终点到后, 减压蒸馏硝基苯, 真空度在 -0.06〜 -O.OSMPa左右, 蒸出大部分硝基苯后, 改水蒸汽蒸馏, 蒸净邻二氯苯, 抽滤, 水洗至中性, 烘干得到黑色还原棕 R缩合物 16〜19g。 实施例 3
在 250mL三口烧瓶(装温度计、 搅拌、 回流冷凝器, 冷凝器内通入冷水, 上附排气管及尾气吸收装置, 以排除反应生成的 HC1、 HBr ) 中加邻二氯苯 120g, 开搅拌, 加实施例 1中所得水解物 7〜7.5g, 升温至 140〜145°C, 加纯 碱 4g,加完保温半小时,升温至 150〜155°C,加苯甲酰氯 0.1〜lg,并在 150〜 155°C保温 1〜2小时。加酰溴化物 7.5g( l-苯甲酰氨基 -4-溴蒽醌含量 95%wt)、 无水醋酸钠 1.5g, 升温至 175〜183°C, 加铜粉 0.1〜0.5g, 然后在 175〜183 °C保温 2〜6小时。 取样做色谱, 酰溴化物余量 l%wt 、 单酰物余量 l%wt 为缩合终点。 终点到后, 减压蒸馏邻二氯苯, 真空度在 -0.06〜- O.OSMPa左右, 蒸出大部分邻二氯苯后, 改水蒸汽蒸馏, 蒸净邻二氯苯, 抽滤, 水洗至中性, 烘干得到黑色还原棕 R缩合物 16〜19g。该缩合物通过闭环、氧化两步工序后 得到还原棕 R原染料, 产品质量与实施例 2相比, 强度、 色光相近, 说明缩 合用邻二氯苯代替硝基苯作溶剂对产品质量无影响。 实施例 4
在 250mL三口烧瓶 (装温度计、 回流冷凝器, 冷凝器内通入冷水, 上附 排气管及尾气吸收装置, 以排除反应生成的 HC1、 HBr) 中加邻二氯苯 120g, 开搅拌, 加实施例 1中所得水解物 7〜7.5g, 升温至 140〜145°C, 加纯碱 4g, 加完保温半小时, 升温至 150〜155°C, 加苯甲酰氯 0.1〜lg, 并在 150〜155 °C保温 1〜2 小时。 加酰溴化物滤饼 7.5g ( 1-苯甲酰氨基 -4-溴蒽醌含量 95%wt)、无水醋酸钠 1.5g、氧化镁 3 g,升温至 170〜185°C,加铜粉 0.1〜0.5g, 然后在 170〜185°C保温 2〜6小时。 取样做色谱, 酰溴化物余量 l%wt 、 单 酰物余量 l%wt为缩合终点。终点到后,减压蒸馏邻二氯苯,真空度在 -0.06〜 -O.OSMPa左右, 蒸出大部分邻二氯苯后, 改水蒸汽蒸馏, 蒸净邻二氯苯, 抽 滤,水洗到中性,烘干得到黑色还原棕 R缩合物 15〜19g。该缩合物通过闭环、 氧化两步工序后得到还原棕 R原染料, 产品质量与实施例 3相比, 强度提高 5%。 说明缩合反应时用复合缚酸剂效果较好。 实施例 5
在 250mL三口烧瓶 (装温度计、 回流冷凝器, 冷凝器内通入冷水, 上附 排气管及尾气吸收装置, 以排除反应生成的 HBr) 中加邻二氯苯 120g, 开搅 拌, 加实施例 1 中所得水解物 7〜7.5g, 升温至 140〜145°C, 加纯碱 4g, 加 完保温半小时, 升温至 150〜155 °C, 加酰溴化物滤饼 7〜7.5g (固含量约 60%wt)、无水醋酸钠 1.5g、氧化镁 3 g,升温至 170〜185°C,加铜粉 0.1〜0.5g, 然后在 170〜185°C保温 2〜6小时。 取样做色谱, 酰溴化物余量 l%wt 、 单 酰物余量 l%wt为缩合终点。 终点到后, 减压蒸馏硝基苯, 真空度在 -0.06〜 -O.OSMPa左右, 蒸出大部分邻二氯苯后, 改水蒸汽蒸馏, 蒸净硝基苯, 抽滤, 水洗到中性, 烘干得到黑色还原棕 R缩合物 15〜19g。 该缩合物通过闭环、氧 化两步工序后得到还原棕 R原染料, 产品质量与实施例 4相比, 色光差, 色 差如下: Aa=-0.9, Ab=-1.23 , Ac = -0.9。 实施例 6
在 250mL三口烧瓶(装温度计、搅拌)中加入硫酸 90〜98%wt, 100 mL, 开搅拌, 冰浴降温至 20°C以下, 加入实施例 2或 3或 4中得到的还原棕 R缩 合物 30g, 加完后, 撤去冰浴, 将温度调整至 10〜45°C, 保温 5〜10小时, 保温结束, 将物料稀释于 500 mL水中, 抽滤、 洗涤至中性, 得到还原棕 R闭 环物 28〜29.5g。 色光与标准品近似, 强度是标准品的 100±5%。 实施例 7
在 500mL三口烧瓶 (装有温度计、 搅拌) 加水 200mL, 开搅拌, 加入浓 度为 70〜98%wt的硫酸 50mL, 加实施例 6中得到的闭环物 15g, 加完, 混合 搅拌 0.5〜2小时, 升温至 60〜80°C加氯酸钠固体 4 g, 升温至 80〜95°C, 滴 加 40 mL水与 5.5 g氯酸钠配成的溶液,滴加完毕,控温在 80〜95°C,保温 2〜 6 小时, 抽滤、 洗涤至中性, 干燥得到深红色还原棕 R原染料。 该原染料 1 份加 2份木质素磺酸盐砂磨 3〜6小时, 得到 100%的商品染料 20〜30g。按应 用实例 1 的方法染棉织物, 呈鲜艳的棕红色, 它不仅用于染单色, 还可用于 多种染料的拼色。 是棕色还原染料中的重要品种。
应用实例 1
在 300mL陶瓷染缸中加入 1份实施例 7的染料,20份 5%wt拉开粉溶液, 18份乙醇, 加入含保险粉 0.85g、 氢氧化钠 l. lg的还原液 2000份, 升温至 60 °C, 还原 15分钟, 加入 50份棉织物, 在 60°C染色 45分钟。 将织物洗涤, 空 气氧化, 用 0.5%wt皂液皂煮 15分钟, 洗净, 自然晾干, 得到棕色染色品。 强度为标准品的 100±3%, 色光与标准品近似。 实施例 8
还原棕 R原染料的生产方法, a、 1-氨基 -5-苯甲酰氨基蒽醌的制备: 向浓 度为 80% wt、 5°C的硫酸中加入 1,5-二氨基蒽醌酰化混合物, 所述 1,5-二氨基 蒽醌酰化混合物是 1-氨基 -5-苯甲酰氨基蒽醌和 1,5-二苯甲酰氨基蒽醌以质量 比 54: 46的混合物, 硫酸与 1,5-二氨基蒽醌酰化混合物的质量比为 6: 1, 将所 得反应体系的温度调整至 15°C, 保温 1〜4小时, 取样, 用高效液相色谱法检 测 1-氨基 -5-苯甲酰氨基蒽醌、 1,5-二苯甲酰氨基蒽醌及 1,5-二氨基蒽醌的含量, 当 1,5-二苯甲酰氨基蒽醌在整个体系中的质量百分含量 5%为反应终点, 终 点到后, 稀释、 过滤, 洗涤反应产物至中性, 干燥得到水解产物; b、 还原棕 R缩合物的制备: 向邻二氯苯中, 加入上步制备得到的水解产物, 升温至 110 °C脱水, 加入缚酸剂, 保温 0.5小时后升温至 150°C, 加苯甲酰氯, 并在 150 °C保温 1小时后, 加酰溴化物滤饼和缚酸剂, 升温至 170°C, 所述酰溴化物滤 饼为 1-苯甲酰氨基 -4-溴蒽醌, 由 1-氨基蒽醌经过酰化、 溴化而得到, 滤饼中 1-苯甲酰氨基 -4-溴蒽醌含量 95% wt, 再加铜催化剂, 然后在 170°C保温缩合 反应 2小时, 取样, 用高效液相色谱法检测, 当反应产物中 1-苯甲酰氨基 -4- 溴蒽醌余量 l%wt, 且 1-氨基 -5-苯甲酰氨基蒽醌余量 l%wt为缩合终点, 缩合完成后蒸馏除去邻二氯苯, 再抽滤、 水洗缩合产物至中性, 烘干得到黑 色还原棕 R缩合物; 第一次加入缚酸剂的量为水解物摩尔用量的 1倍, 第二 次加入缚酸剂的量为 1-苯甲酰氨基 -4-溴蒽醌摩尔用量的 2倍, 所述缚酸剂是 碳酸钠、 碳酸氢钠、 碳酸钾、 氧化镁、 氧化钙、 醋酸钠、 吡啶中的一种或两 种的任意比混合物。 1-苯甲酰氨基 -4-溴蒽醌与水解物的摩尔比为 1: 1 ; 1-苯甲 酰氨基 -4-溴蒽醌与苯甲酰氯的摩尔比 4: 1 ; 1-苯甲酰氨基 -4-溴蒽醌与铜催化剂 的摩尔比为 1 : 0.02;溶剂邻二氯苯的质量是反应体系全部物料的质量的 5倍。 c、 还原棕 R闭环物的制备: 向浓度为 80% wt、 5°C的硫酸中, 加入黑色还原 棕 R缩合物, 硫酸的用量是黑色还原棕 R缩合物质量的 4倍, 将反应体系的 温度调整至 15°C, 保温 5小时, 保温结束, 将反应体系物料稀释, 抽滤、 洗 涤反应产物至中性, 得到还原棕 R闭环物; d、 氧化步骤: 向水中加入硫酸, 控制硫酸浓度为 20%wt, 再加入还原棕 R闭环物, 混合搅拌 0.5小时, 然后 升温至 50°C, 加氧化剂: 氯酸钠、 重铬酸钠或重铬酸钾, 再升温至 80°C, 再 滴加上述氧化剂的水溶液, 保温 2小时, 所述氧化剂的总加入量与还原棕 R 闭环物的质量比为 1 : 1, 抽滤、 洗涤反应产物至中性, 干燥得到深红色还原 棕 R原染料。 实施例 9
还原棕 R原染料的生产方法, a、 1-氨基 -5-苯甲酰氨基蒽醌的制备: 向浓 度为 90% wt、 10°C的硫酸中加入 1,5-二氨基蒽醌酰化混合物, 所述 1,5-二氨 基蒽醌酰化混合物是 1-氨基 -5-苯甲酰氨基蒽醌和 1,5-二苯甲酰氨基蒽醌以质 量比 54: 46的混合物, 硫酸与 1,5-二氨基蒽醌酰化混合物的质量比为 8: 1, 将 所得反应体系的温度调整至 30°C, 保温 3小时, 取样, 用高效液相色谱法检 测 1-氨基 -5-苯甲酰氨基蒽醌、 1,5-二苯甲酰氨基蒽醌及 1,5-二氨基蒽醌的含量, 当 1,5-二苯甲酰氨基蒽醌在整个体系中的质量百分含量 5%为反应终点, 终 点到后, 稀释、 过滤, 洗涤反应产物至中性, 干燥得到水解产物; b、 还原棕 R缩合物的制备: 向邻二氯苯中, 加入上步制备得到的水解产物, 升温至 120 °C脱水, 加入缚酸剂, 保温 1小时后升温至 152°C, 加苯甲酰氯, 并在 152°C 保温 1.5小时后, 加酰溴化物滤饼和缚酸剂, 升温至 180°C, 所述酰溴化物滤 饼为 1-苯甲酰氨基 -4-溴蒽醌, 由 1-氨基蒽醌经过酰化、 溴化而得到, 滤饼中 1-苯甲酰氨基 -4-溴蒽醌含量 95% wt, 再加铜催化剂, 然后在 180°C保温缩合 反应 4小时, 取样, 用高效液相色谱检测, 当反应产物中 1-苯甲酰氨基 -4-溴 蒽醌余量 l%wt, 且 1-氨基 -5-苯甲酰氨基蒽醌余量 l%wt为缩合终点, 缩 合完成后蒸馏除去邻二氯苯, 再抽滤、 水洗缩合产物至中性, 烘干得到黑色 还原棕 R缩合物; 第一次加入缚酸剂的量为水解物摩尔用量的 2倍, 第二次 加入缚酸剂的量为 1-苯甲酰氨基 -4-溴蒽醌摩尔用量的 3倍, 所述缚酸剂是碳 酸钠、 碳酸氢钠、 碳酸钾、 氧化镁、 氧化钙、 醋酸钠、 吡啶中的一种或两种 的任意比混合物。 1-苯甲酰氨基 -4-溴蒽醌与水解物的摩尔比为 1 : 1.2; 1-苯甲 酰氨基 -4-溴蒽醌与苯甲酰氯的摩尔比 3: 1; 1-苯甲酰氨基 -4-溴蒽醌与铜催化剂 的摩尔比为 1 : 0.06;溶剂邻二氯苯的质量是反应体系全部物料的质量的 8倍。 c、 还原棕 R闭环物的制备: 向浓度为 90% wt、 15°C的硫酸中, 加入黑色还原 棕 R缩合物, 硫酸的用量是黑色还原棕 R缩合物质量的 5倍, 将反应体系的 温度调整至 25°C, 保温 8小时, 保温结束, 将反应体系物料稀释, 抽滤、 洗 涤反应产物至中性, 得到还原棕 R闭环物; d、 氧化步骤: 向水中加入硫酸, 控制硫酸浓度为 30%wt, 再加入还原棕 R闭环物, 混合搅拌 1小时, 然后升 温至 60°C, 加氧化剂: 氯酸钠、 重铬酸钠或重铬酸钾, 再升温至 85°C, 再滴 加上述氧化剂的水溶液, 保温 4小时, 所述氧化剂的总加入量与还原棕 R闭 环物的质量比为 1 : 1.5, 抽滤、 洗涤反应产物至中性, 干燥得到深红色还原 棕 R原染料。 实施例 10
还原棕 R原染料的生产方法, a、 1-氨基 -5-苯甲酰氨基蒽醌的制备: 向浓 度为 98% wt、 5〜15°C的硫酸中加入 1,5-二氨基蒽醌酰化混合物, 所述 1,5-二 氨基蒽醌酰化混合物是 1-氨基 -5-苯甲酰氨基蒽醌和 1,5-二苯甲酰氨基蒽醌以 质量比 54: 46的混合物,硫酸与 1,5-二氨基蒽醌酰化混合物的质量比为 12: 1, 将所得反应体系的温度调整至 45°C, 保温 4小时, 取样, 用高效液相色谱法 检测 1-氨基 -5-苯甲酰氨基蒽醌、 1,5-二苯甲酰氨基蒽醌及 1,5-二氨基蒽醌的含 量, 当 1,5-二苯甲酰氨基蒽醌在整个体系中的质量百分含量 5%为反应终点, 终点到后, 稀释、 过滤, 洗涤反应产物至中性, 干燥得到水解产物; b、 还原 棕 R缩合物的制备: 向邻二氯苯中, 加入上步制备得到的水解产物, 升温至 150°C脱水, 加入缚酸剂, 保温 2小时后升温至 155°C, 加苯甲酰氯, 并在 155 °C保温 2小时后, 加溴化物滤饼和缚酸剂, 升温至 185°C, 所述酰溴化物滤饼 为 1-苯甲酰氨基 -4-溴蒽醌, 由 1-氨基蒽醌经过酰化、 溴化而得到, 滤饼中 1- 苯甲酰氨基 -4-溴蒽醌含量 95% wt, 再加铜催化剂, 然后在 185°C保温缩合 反应 6小时, 取样, 用高效液相色谱法检测, 当反应产物中 1-苯甲酰氨基 -4- 溴蒽醌余量 l%wt, 且 1-氨基 -5-苯甲酰氨基蒽醌余量 l%wt为缩合终点, 缩合完成后蒸馏除去邻二氯苯, 再抽滤、 水洗缩合产物至中性, 烘干得到黑 色还原棕 R缩合物; 第一次加入缚酸剂的量为水解物摩尔用量的 3倍, 第二 次加入缚酸剂的量为 1-苯甲酰氨基 -4-溴蒽醌摩尔用量的 6倍, 所述缚酸剂是 碳酸钠、 碳酸氢钠、 碳酸钾、 氧化镁、 氧化钙、 醋酸钠、 吡啶中的一种或两 种的任意比混合物。 1-苯甲酰氨基 -4-溴蒽醌与水解物的摩尔比为 1: 1.5; 1-苯 甲酰氨基 -4-溴蒽醌与苯甲酰氯的摩尔比为 5: 1 ; 1-苯甲酰氨基 -4-溴蒽醌与铜催 化剂的摩尔比为 1:0.08; 溶剂邻二氯苯的质量是反应体系全部物料的质量的 10倍。 c、 还原棕 R闭环物的制备: 向浓度为 98% wt、 20°C的硫酸中, 加入 黑色还原棕 R缩合物, 硫酸的用量是黑色还原棕 R缩合物质量的 8倍, 将反 应体系的温度调整至 35°C, 保温 10小时, 保温结束, 将反应体系物料稀释, 抽滤、 洗涤反应产物至中性, 得到还原棕 R闭环物; d、 氧化步骤: 向水中加 入硫酸, 控制硫酸浓度为 40%wt, 再加入还原棕 R闭环物, 混合搅拌 2小时, 然后升温至 80°C, 加氧化剂: 氯酸钠、 重铬酸钠或重铬酸钾, 再升温至 95°C, 再滴加上述氧化剂的水溶液,保温 6小时,所述氧化剂的总加入量与还原棕 R 闭环物的质量比为 1:2.5, 抽滤、 洗涤反应产物至中性, 干燥得到深红色还原 棕 R原染料。

Claims

权 利 要 求 书
1、 一种还原棕 R原染料的生产方法, 其特征在于工艺步骤为: a. 1,5-二 氨基蒽醌经酰化反应后, 再采用酸性水解的方式制得 1-氨基 -5-苯甲酰氨基蒽 醌; b. 1-氨基蒽醌经酰化、溴化反应得到 1-苯甲酰氨基 -4-溴蒽醌; c. 1-氨基 -5- 苯甲酰氨基蒽醌与 1-苯甲酰氨基 -4-溴蒽醌经缩合反应得还原棕 R缩合物; d. 还原棕 R缩合物经闭环、 氧化反应得还原棕 R原染料。
2、 根据权利要求 1所述的还原棕 R原染料的生产方法, 其特征在于: a. 1-氨基 -5-苯甲酰氨基蒽醌的制备: 向浓度为 80〜98% wt的硫酸中加入 1,5-二氨基蒽醌酰化混合物, 硫酸与 1,5-二氨基蒽醌酰化混合物的质量比为 (6〜12): 1, 将所得反应体系的温度调整至 15〜45°C, 保温 1〜4小时, 取样, 用高效液相色谱检测 1-氨基 -5-苯甲酰氨基蒽醌、 1,5-二苯甲酰氨基蒽醌及 1,5- 二氨基蒽醌的含量,当 1,5-二苯甲酰氨基蒽醌在整个体系中的质量百分含量 5%为反应终点, 终点到后, 稀释、 过滤, 洗涤反应产物至中性, 干燥得到水 解产物;
b. 还原棕 R缩合物的制备: 向邻二氯苯中, 加入上步制备得到的水解产 物,升温至 110〜150°C脱水,加入缚酸剂,保温 0.5小时〜 2小时后升温至 150〜 155°C, 加入苯甲酰氯, 并在 150〜155°C保温 1〜2小时后, 加入酰溴化物滤 饼和缚酸剂, 升温至 170〜185 °C, 所述酰溴化物滤饼为 1-苯甲酰氨基 -4-溴蒽 醌, 由 1-氨基蒽醌经过酰化、 溴化而得到, 滤饼中 1-苯甲酰氨基 -4-溴蒽醌含 量 95% wt, 再加铜催化剂, 然后在 170〜185°C保温缩合反应 2〜6小时, 取 样,用高效液相色谱检测,当反应产物中 1-苯甲酰氨基 -4-溴蒽醌余量 l%wt, 且 1-氨基 -5-苯甲酰氨基蒽醌余量 l%wt为缩合终点,缩合完成后蒸馏除去邻 二氯苯, 再抽滤、 水洗缩合产物至中性, 烘干得到黑色还原棕 R缩合物; c 还原棕 R闭环物的制备: 向浓度为 80〜98% wt的硫酸中,加入黑色还 原棕 R缩合物, 将反应体系的温度调整至 15〜35°C, 保温 5〜10小时, 保温 结束, 将反应体系物料稀释, 抽滤、 洗涤反应产物至中性, 得到还原棕 R闭 环物;
d. 氧化步骤: 向水中加入硫酸, 控制硫酸浓度为 20%〜40%wt, 再加入 还原棕 R闭环物, 混合搅拌 0.5小时〜 2小时, 然后升温至 50〜80°C, 加氧化 剂: 氯酸钠、 重铬酸钠或重铬酸钾, 再升温至 80〜95°C, 再滴加上述氧化剂 的水溶液, 保温 2〜6小时, 所述氧化剂的总加入量与还原棕 R闭环物的质量 比为 1 : ( 1〜2.5 ), 抽滤、 洗涤反应产物至中性, 干燥得到深红色还原棕 R原 染料。
3、 根据权利要求 2所述的还原棕 R原染料的生产方法, 其特征在于所述 1,5-二氨基蒽醌酰化混合物是 1-氨基 -5-苯甲酰氨基蒽醌和 1,5-二苯甲酰氨基蒽 醌以质量比 54: 46的混合物。
4、 根据权利要求 2所述的还原棕 R原染料的生产方法, 其特征在于步骤 b中, 第一次加入缚酸剂的量为水解物摩尔用量的 1〜3倍, 第二次加入缚酸 剂的量为 1-苯甲酰氨基 -4-溴蒽醌摩尔用量的 1〜6倍, 所述缚酸剂是碳酸钠、 碳酸氢钠、 碳酸钾、 氧化镁、 氧化钙、 醋酸钠、 吡啶中的一种或两种的任意 比混合物。
5、 根据权利要求 2所述的还原棕 R原染料的生产方法, 其特征在于步骤 a中, 硫酸的温度是 5〜15°C ;
6、 根据权利要求 2所述的还原棕 R原染料的生产方法, 其特征在于步骤 b 中, 1-苯甲酰氨基 -4-溴蒽醌与水解物的摩尔比为 1 : ( 1〜1.5 ); 1-苯甲酰氨 基 -4-溴蒽醌与苯甲酰氯的摩尔比不高于 5: 1 ; 1-苯甲酰氨基 -4-溴蒽醌与铜催化 剂的摩尔比为 1 : (0.02〜0.08); 溶剂邻二氯苯的质量是反应体系全部物料的 质量的 5〜10倍;
7、 根据权利要求 2所述的还原棕 R原染料的生产方法, 其特征在于步骤 c中, 硫酸的温度是 5〜20°C ;
8、 根据权利要求 2所述的还原棕 R原染料的生产方法, 其特征在于步骤 c中, 硫酸的用量是黑色还原棕 R缩合物质量的 4〜8倍。
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104448889A (zh) * 2014-11-29 2015-03-25 萧县凯奇化工科技有限公司 一种还原棕r的制备方法
CN111072658A (zh) * 2019-12-26 2020-04-28 江苏亚邦染料股份有限公司 一种合成还原黑25的方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3917640A (en) * 1973-03-30 1975-11-04 Toms River Chemical Corp Vat dyestuffs prepared from crude aminoanthraquinone mixtures
US4349478A (en) * 1980-10-14 1982-09-14 Ciba-Geigy Ag Process for the carbazolation of anthrimides
US4772725A (en) * 1987-02-17 1988-09-20 Ciba-Geigy Corporation Anthrimidecarbazole compound having thenoylamino groups
JPH09263571A (ja) * 1996-03-29 1997-10-07 Mitsui Toatsu Chem Inc 1−アミノ−5−ベンゾイルアミノアントラキノンの精製法
JPH09268168A (ja) * 1996-04-04 1997-10-14 Mitsui Toatsu Chem Inc 1−アミノ−5−ベンゾイルアミノアントラキノンの製造方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3917640A (en) * 1973-03-30 1975-11-04 Toms River Chemical Corp Vat dyestuffs prepared from crude aminoanthraquinone mixtures
US4349478A (en) * 1980-10-14 1982-09-14 Ciba-Geigy Ag Process for the carbazolation of anthrimides
US4772725A (en) * 1987-02-17 1988-09-20 Ciba-Geigy Corporation Anthrimidecarbazole compound having thenoylamino groups
JPH09263571A (ja) * 1996-03-29 1997-10-07 Mitsui Toatsu Chem Inc 1−アミノ−5−ベンゾイルアミノアントラキノンの精製法
JPH09268168A (ja) * 1996-04-04 1997-10-14 Mitsui Toatsu Chem Inc 1−アミノ−5−ベンゾイルアミノアントラキノンの製造方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104448889A (zh) * 2014-11-29 2015-03-25 萧县凯奇化工科技有限公司 一种还原棕r的制备方法
CN111072658A (zh) * 2019-12-26 2020-04-28 江苏亚邦染料股份有限公司 一种合成还原黑25的方法

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