Method for preparing acid black 172
A technology of acid black and sulfonic acid, applied in chemical instruments and methods, dyeing methods, complex metal compounds of azo dyes, etc. 10%, long product production cycle and other problems, to achieve the effect of speeding up the chromating reaction, improving the product yield and reducing the cost of treatment
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0031] A preparation method of Acid Black 172, wherein the steps of the preparation method are:
[0032] (1). Put 295g of 100% 6-nitro-1,2-diazoxynaphthalene-4-sulfonic acid into the dissolution tank A and add 1000ml of water to dissolve it, and add the concentration to the tank A under the condition of stirring 30% sodium hydroxide solution to control the pH value to 5, and at the same time control the solution temperature to 18°C, the specific method of controlling the cooling of the solution can be the way of adding ice;
[0033] (2). Put 151g of 2-naphthol into the dissolving tank B and add 400ml of water to dissolve it, add 95ml of 30% sodium hydroxide solution into tank B, stir and heat up to 80°C, when the 2-naphthol is completely dissolved , add 3g dispersant NSO (condensate of β-naphthalenesulfonic acid and formaldehyde) and 8g ethylene glycol monobutyl ether, stir;
[0034] (3). Under the condition of rapid stirring, quickly pour the liquid in the dissolution tank B...
Embodiment 2
[0038] A preparation method of Acid Black 172, wherein the steps of the preparation method are:
[0039] (1). Put 295g of 100% 6-nitro-1,2-diazooxynaphthalene-4-sulfonic acid into the dissolution tank A and add 1000ml of water to dissolve it. Concentration is 30% sodium hydroxide solution, control the pH value to 4, and control the solution temperature at the same time to be 20 ℃, the specific method of controlling the cooling of the solution can be the way of adding ice;
[0040] (2). Put 151g of 2-naphthol into the dissolving tank B and add 400ml of water to dissolve it, add 95ml of 30% sodium hydroxide solution into the tank of B, stir and heat up to 85°C, when the 2-naphthol is completely dissolved , add 3g of dispersant ethoxylated nonylphenol and 8g of propylene glycol, and stir;
[0041] (3). Under the condition of rapid stirring, quickly pour the liquid in the dissolving tank B into the dissolving tank A to form a mixed solution, control the temperature of the mixed s...
Embodiment 3
[0045] A preparation method of Acid Black 172, wherein the steps of the preparation method are:
[0046] (1). Put 295g of 100% 6-nitro-1,2-diazooxynaphthalene-4-sulfonic acid into the dissolution tank A and add 1000ml of water to dissolve it. The sodium hydroxide solution with a concentration of 30% is controlled to have a pH value of 6, and at the same time, the temperature of the solution is controlled to be 12°C. The specific method for controlling the cooling of the solution can be the method of adding ice;
[0047] (2). Put 151g of 2-naphthol into the dissolving tank B and add 400ml of water to dissolve it, add 95ml of 30% sodium hydroxide solution into tank B, stir and heat up to 75°C, when the 2-naphthol is completely dissolved , add 3g dispersant sodium lignosulfonate and 8g ethylene glycol monomethyl ether, stir;
[0048] (3). Under the condition of rapid stirring, quickly pour the liquid in the dissolving tank B into the dissolving tank A to form a mixed solution, con...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com