Novel technique for synthesizing solvent yellow 189

A new process and solvent technology, which is applied in the new process field of solvent yellow 189 synthesis, can solve the problems of large fluctuations in product appearance and content, high production costs, and high production costs of solvent yellow 189

Inactive Publication Date: 2008-02-27
JIANGSU YABANG DYE
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The chemical name of solvent yellow 189 is 1,5-diphenylthioanthraquinone. It is a solvent dye with excellent performance. It can also be used as a disperse dye for dyeing polyester and its blended fabrics after treatment. The original production process is 1 , 5-dichloroanthraquinone as raw material, in the solvent xylene, using potassium carbonate as the acid agent and thiophenol to react, after the reaction, the solvent xylene is removed by distillation, then filtered, washed with hot water to remove unreacted The thiophenol is washed and dried to obtain the finished product. The yield of this process is very high, but becau

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Novel technique for synthesizing solvent yellow 189
  • Novel technique for synthesizing solvent yellow 189

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] In a 250ml four-necked flask, add 100ml of dimethylformamide, 30g of 1,5-dinitroanthraquinone, 24g of thiophenol, and 12g of potassium hydroxide. After the addition, slowly raise the temperature to 50°C for about one hour and keep it warm. React for two hours, after the chromatographic detection of 1,5-nitroanthraquinone disappears, use a cold water bath to cool down to 25°C, keep stirring at this temperature for one hour, filter, and wash the filter cake with dimethylformamide containing 20% ​​water. Wash it with hot water at about 80°C, and dry the filter cake to obtain 41g of finished product, with a content of 99.7% and a yield of 96%.

Embodiment 2

[0017] In a 250ml four-neck flask, add 120ml of dimethylformamide, 30g of 1,5-dinitroanthraquinone, 24g of thiophenol, and 12g of potassium hydroxide. After the addition, slowly raise the temperature to 50°C for about one hour to keep the temperature React for two hours, after the chromatographic detection of 1,5-dinitroanthraquinone disappears, use a cold water bath to cool down to 25°C, keep stirring at this temperature for one hour, then filter, and wash the filter cake with dimethylformamide containing 20% ​​water Then wash it with hot water at about 80°C, and dry the filter cake to obtain 40 g of finished product, with a content of 99.7% and a yield of 93.7%.

Embodiment 3

[0019] In a 250ml four-neck flask, add 100ml of dimethylacetamide, 30g of 1,5-dinitroanthraquinone, 24g of thiophenol, and 12g of potassium hydroxide. After 1,5-dinitroanthraquinone disappears, use a cold water bath to cool down to 25°C, keep stirring at this temperature for one hour and then filter, wash the filter cake with dimethylacetamide containing 20% ​​water, and then wash it with about 80°C After washing with hot water, the filter cake was dried to obtain 41.5 g of finished product with a content of 99.4% and a yield of 97.2%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a new synthesizing technique of solvent yellow 189, which comprises the following steps: adopting 1, 5-dinitroanthraquinone as raw material to react with thiophenol in the strongly polar solvent of dimethyl formamide or dimethyl acetamide based on potassium hydroxide as acid-attaching agent at 30-100 deg. c to make the solvent yellow 189; cooling below 30 deg. c after finishing the reaction; filtering until the product is evolved sufficiently; washing the filter pie; drying; obtaining the product. The method reduces the manufacturing cost greatly and improves the main content of the product obviously, which modifies the appearance of the product with simple operation and easy control, in order to stabilize the manufacturing and increase the economical benefit.

Description

technical field [0001] The present invention is a new process for the synthesis of solvent yellow 189. More specifically, a more economical and readily available raw material 1,5-dinitroanthraquinone is used as a raw material to replace 1,5-dichloroanthraquinone in the original process , to produce a product of lower cost and better quality. Background technique [0002] The chemical name of solvent yellow 189 is 1,5-diphenylthioanthraquinone. It is a solvent dye with excellent performance. It can also be used as a disperse dye for dyeing polyester and its blended fabrics after treatment. The original production process is 1 , 5-dichloroanthraquinone as raw material, in the solvent xylene, using potassium carbonate as the acid agent and thiophenol to react, after the reaction, the solvent xylene is removed by distillation, then filtered, washed with hot water to remove unreacted The thiophenol is washed and dried to obtain the finished product. The yield of this process is ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C09B1/58
Inventor 李少文王继昌牟忠丽
Owner JIANGSU YABANG DYE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap