Process for preparing solvent orange 2A

A production process and technology of solvent orange, applied in the field of production process of solvent orange 2A, can solve the problems of long reaction time, large amount of solvent and high production cost, and achieve the effects of high equipment utilization rate, reduced reaction time and strong polarity

Inactive Publication Date: 2007-04-25
南通市争妍新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The complexation reaction of the existing production process uses alcohol-ether mixed solvent and complexing agent CRF to raise the temperature to 100°C, and adopts the reflux reaction step, resulting in long reaction time, large amount of solvent and high production cost

Method used

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  • Process for preparing solvent orange 2A
  • Process for preparing solvent orange 2A
  • Process for preparing solvent orange 2A

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1: according to the processing steps shown in Fig. 1.

[0037] 1. Coupling reaction: After diazotization reaction, 350 kg of 4-nitro-2-aminophenol is coupled with 360 kg of 1-phenyl-3-methyl-5-pyrazolone, and the product is filtered, washed and dried After that, the intermediate product azo compound A is obtained.

[0038] 2. Complexation reaction: 600 kilograms of mixed solvents prepared by dimethylformamide and formamide in a weight ratio of 4:1 are added to 100 kilograms of propylene glycol butyl ether solvents and 100 kilograms of complexing agent CRF (Cr 3 (HCOO) X (OH) Y , X+Y=9), heated to 100°C, added azo compound A, directly heated to 138-150°C without reflux, reacted for 3 hours, precipitated into water after cooling down, filtered, and washed with water to obtain complex B.

[0039] 3. Substitution reaction: beat complex B in water, add 250 kg of nonionic surfactant R-NH 2 Cl (R is an alkyl group with 10-12 carbon atoms), heated to 60°C, reacte...

Embodiment 2

[0041] 1. Coupling reaction: After diazotization reaction, 340 kg of 4-nitro-2-aminophenol was coupled with 350 kg of 1-phenyl-3-methyl-5-pyrazolone, and the product was filtered, washed and dried After that, the intermediate product azo compound A is obtained.

[0042] Two, complexation reaction: 583 kilograms of mixed solvents prepared by dimethylformamide and formamide in a weight ratio of 3.5:1 are added to 97 kilograms of propylene glycol ether and 90 kilograms of complexing agent CRF (Cr 3 (HCOO) X (OH) Y , X+Y=9), heated to 100°C, added azo compound A, directly heated to 138-150°C without reflux, reacted for 2.8 hours, precipitated into water after cooling down, filtered, and washed with water to obtain complex B.

[0043] 3. Substitution reaction: beat complex B in water, add 230 kg of nonionic surfactant R-NH 2 Cl (R is an alkyl group with 10 carbon atoms), heated to 60°C, reacted for 4 hours, filtered, washed with water, and dried to obtain 1000 kg of Solvent Oran...

Embodiment 3

[0045]1. Coupling reaction: After diazotization reaction, 370 kg of 4-nitro-2-aminophenol was coupled with 375 kg of 1-phenyl-3-methyl-5-pyrazolone, and the product was filtered, washed and dried After that, the intermediate product azo compound A is obtained.

[0046] 2. Complexation reaction: 617 kilograms of mixed solvents prepared by dimethylformamide and formamide in a weight ratio of 4.3:1 are added to 103 kilograms of propylene glycol methyl ether and 110 kilograms of complexing agent CRF (Cr 3 (HCOO) X (OH) Y , X+Y=9), heated to 100°C, added azo compound A, directly raised the temperature to 138-150°C without reflux, reacted for 3.5 hours, precipitated into water after cooling down, filtered, and washed with water to obtain complex B.

[0047] 3. Substitution reaction: beat complex B in water, add 260 kg of nonionic surfactant R-NH 2 Cl (R is an alkyl group with 12 carbon atoms), heated to 60°C, reacted for 4 hours, filtered, washed with water, and dried to obtain 1...

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Abstract

The invention discloses a solvent orange 2A processing technique in the chemical engineering domain, which comprises the following steps: adopting 4-nitro-2-aminophenol and 1-phenyl-3-methyl-5-pyrazolone as basic raw material; coupling; complexing; substituting; adding composite solvent of amide in the alcohol ether solvent and complexing agent CRF; heating to 100 deg.c; adding azo A; heating to 138-150 deg.c directly for 2.5-3.5h; cooling to evolve in the water; filtering; washing through water to obtain the complex B.

Description

technical field [0001] The invention relates to a production process of solvent orange 2A, which belongs to the field of chemical industry. Background technique [0002] Solvent Orange 2A, English name Solvent Orange 2A, Pigment Index Number: Solvent Orange 62#, Fastness: (Light Fastness: 5-6, Heat Resistance: 160), Solubility (g / L): (Ethyl Fiber element: -, xylene: -, ethyl acetate: 150, methyl isobutyl ketone: 100, cyclohexanone: 300, methyl ethyl ketone: 300, n-butanol: 300, ethanol: 300). Uses: Mainly used in wood dyeing, coloring of various natural and synthetic leathers, and coloring of various metal transparent coatings, solvent-based inks, aluminum foil, vacuum plating films and bronzing materials. Its structural formula is: [0003] [A→Cr←A]NH 2 R (where R is an alkyl group with 10-12 carbon atoms, and A is [0004] [0005] The usual process for the current production of Solvent Orange 2A includes the following steps: [0006] 1. Coupling reaction: After di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B45/16
Inventor 徐立群赵觉新任爱芬
Owner 南通市争妍新材料科技有限公司
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