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 PDFInfo
- 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
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- brown
- benzoylamino
- reduced brown
- hours
- reaction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D209/00—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
- C07D209/56—Ring systems containing three or more rings
- C07D209/80—[b, c]- or [b, d]-condensed
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B1/00—Dyes with anthracene nucleus not condensed with any other ring
- C09B1/005—Di-anthraquinonyl and derivative compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B1/00—Dyes with anthracene nucleus not condensed with any other ring
- C09B1/16—Amino-anthraquinones
- C09B1/20—Preparation from starting materials already containing the anthracene nucleus
- C09B1/36—Dyes with acylated amino groups
- C09B1/42—Dyes with acylated amino groups the acyl groups being residues of an aromatic carboxylic acid
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B1/00—Dyes with anthracene nucleus not condensed with any other ring
- C09B1/50—Amino-hydroxy-anthraquinones; Ethers and esters thereof
- C09B1/51—N-substituted amino-hydroxy anthraquinone
- C09B1/516—N-acylated derivatives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B5/00—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings
- C09B5/24—Dyes 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
- C09B5/2409—Dyes 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
- C09B5/2436—Dyes 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B5/00—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings
- C09B5/24—Dyes 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
- C09B5/26—Carbazoles of the anthracene series
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B5/00—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings
- C09B5/24—Dyes 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
- C09B5/26—Carbazoles of the anthracene series
- C09B5/28—Anthrimide carbazoles
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B67/00—Influencing 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
- C09B67/0071—Process features in the making of dyestuff preparations; Dehydrating agents; Dispersing agents; Dustfree compositions
- C09B67/0077—Preparations with possibly reduced vat, sulfur or indigo dyes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General 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
- D06P1/22—General 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
- D06P1/24—Anthraquinone dyes or anthracene nucleus containing vat dyes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/58—Material containing hydroxyl groups
- D06P3/60—Natural or regenerated cellulose
- D06P3/6025—Natural 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.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2009/075660 WO2011072445A1 (zh) | 2009-12-17 | 2009-12-17 | 生产还原棕r原染料的方法 |
| US13/516,775 US20120296097A1 (en) | 2009-12-17 | 2009-12-17 | Preparation method of original dye of vat brown r |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2009/075660 WO2011072445A1 (zh) | 2009-12-17 | 2009-12-17 | 生产还原棕r原染料的方法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2011072445A1 true WO2011072445A1 (zh) | 2011-06-23 |
Family
ID=44166727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2009/075660 Ceased WO2011072445A1 (zh) | 2009-12-17 | 2009-12-17 | 生产还原棕r原染料的方法 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US20120296097A1 (zh) |
| WO (1) | WO2011072445A1 (zh) |
Cited By (2)
| 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)
| 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 |
-
2009
- 2009-12-17 WO PCT/CN2009/075660 patent/WO2011072445A1/zh not_active Ceased
- 2009-12-17 US US13/516,775 patent/US20120296097A1/en not_active Abandoned
Patent Citations (5)
| 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)
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| US20120296097A1 (en) | 2012-11-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106478504B (zh) | 制备Roxadustat中间体的方法 | |
| CN101817989A (zh) | 一种分散蓝60及其同系物的制备方法 | |
| WO2011072445A1 (zh) | 生产还原棕r原染料的方法 | |
| CN102964313B (zh) | 一种非布索坦的合成方法 | |
| CN102101845B (zh) | 一种活性染料化合物及其制备方法及一种活性染料产品 | |
| WO2018233111A1 (zh) | 一种绿色环保制备盐酸左氧氟沙星的方法 | |
| CN104725252B (zh) | 一种制备溶剂蓝35的方法 | |
| CN100543012C (zh) | 制备1,4-二氨基-2,3-二氰基蒽醌的方法 | |
| CN102295837A (zh) | 一种分散黄染料的制备方法 | |
| CN102212029B (zh) | 分散蓝60中间体的合成方法 | |
| CN104926636A (zh) | 一种制备1,4-二羟基蒽醌的方法 | |
| CN101973844B (zh) | 1,2,3,4-四氘代-9-溴蒽的合成方法 | |
| CN101781220B (zh) | 一种(±)-肾上腺素的制备方法 | |
| CN112707807A (zh) | 4,5-二氟邻苯二甲酸的制备方法 | |
| WO2010118660A1 (zh) | 高纯度取代蒽醌的合成方法 | |
| CN101863854A (zh) | 2-(3-氰基-4-异丁氧基)苯基-4-甲基-5-噻唑甲酸的合成方法 | |
| CN105254469B (zh) | 一种氯乙烷的清洁生产工艺及装置 | |
| CN112094212A (zh) | 一种孟鲁司特钠侧链的制备方法 | |
| CN101717401B (zh) | 一种氯铝酞菁的制法 | |
| CN108484593A (zh) | 一种黄藤素的合成方法 | |
| CN102775810A (zh) | 一种荧烷类成色剂及其制备方法 | |
| CN108997773B (zh) | 一种分散黄染料的合成方法 | |
| WO2018121051A1 (zh) | 一种3-氰基-4-异丙氧基苯甲酸甲酯的制备方法 | |
| TW200422353A (en) | Phthalimidy azo dyes, processes for the preparation thereof and the use thereof | |
| CN102660131A (zh) | 还原黄3rt的生产方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 09852183 Country of ref document: EP Kind code of ref document: A1 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 5643/DELNP/2012 Country of ref document: IN |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 13516775 Country of ref document: US |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 09852183 Country of ref document: EP Kind code of ref document: A1 |