A kind of preparation method of active khaki dye semi-finished product

A technology of semi-finished products and khaki, which is applied in the field of preparation of semi-finished products of reactive khaki dyes, which can solve the problems of large dust, poor color brightness, and difficult washing.

Active Publication Date: 2016-06-29
苏州澳缘盛新材料科技有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing active khaki dyes are monomeric compounds, the dyeing fastness of this kind of dyes is relatively low, especially the color brightness is poor, the dust is large when used, and it is not easy to wash

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
  • A kind of preparation method of active khaki dye semi-finished product
  • A kind of preparation method of active khaki dye semi-finished product
  • A kind of preparation method of active khaki dye semi-finished product

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0021] The preparation method of above-mentioned active khaki dye semi-finished product, comprises the following steps:

[0022] (a) will Dissolve in water, adjust the pH to 6.7-7.2, then add acetic anhydride, heat up to 40-45°C, and react for 1-3 hours to obtain the first mixed solution. The molar ratio with the acetic anhydride is 1:1.05~1.1;

[0023] (b) will Dissolve in water, keep the temperature at 0-5°C, add equimolar amounts of hydrochloric acid and sodium nitrite solution to react for 1-3 hours, then add the first mixed solution to it, at 45-60°C, pH is 3.5 to 3.8 under the conditions of reaction for 1 to 3 hours to obtain the second mixed solution, the with the said The molar ratio is 1:1~105;

[0024] (c) Add diatomite to the second mixed solution, react at 40-50°C for 30-60 minutes, filter and dry the filtrate, and the volume ratio of the diatomite to the second mixed solution is 0.5~1%.

[0025] In step (a), control temperature 23~28 ℃ after adding ace...

Embodiment 1

[0031] The present embodiment provides a kind of active khaki dye semi-finished product, and its chemical structural formula is:

[0032]

[0033] Its preparation method comprises the following steps:

[0034] (a) will Dissolve in water, adjust the pH to 6.7, then add acetic anhydride, control the temperature at 23°C, stir for 30 minutes, uniformly heat up to 40°C in 20 minutes, and react for 1 hour to obtain the first mixed solution. The mol ratio with described acetic anhydride is 1:1.05;

[0035] (b) will Dissolve in water, keep the temperature at 0°C, add equimolar hydrochloric acid and sodium nitrite solution dropwise at a rate of 0.5kg / hour for 3 hours, then add the first mixed solution to it, stir evenly and adjust the pH value to 2.5, continue to stir for 0.5 hours, control the temperature at 10°C, then adjust the pH value to 3.5 with 10wt% soda lye, raise the temperature to 45°C at a rate of 20°C / hour, and react for 1 hour to obtain the second mixed solution....

Embodiment 2

[0038] The present embodiment provides a kind of preparation method of active khaki dye semi-finished product in embodiment 1, comprises the following steps:

[0039] (a) will Dissolve in water, adjust the pH to 7.2, then add acetic anhydride and control the temperature at 28°C, stir for 60 minutes, uniformly heat up to 45°C in 30 minutes, and react for 3 hours to obtain the first mixed solution. The mol ratio with described acetic anhydride is 1:1.1;

[0040] (b) will Dissolve in water, keep the temperature at 5°C, dropwise add equimolar hydrochloric acid and sodium nitrite solution to it at a rate of 2.5kg / hour to react for 3 hours, then add the first mixed solution to it, stir evenly and adjust When the pH value reaches 3.5, continue to stir for 1 hour, control the temperature to 15°C, then adjust the pH value to 3.8 with 30wt% soda lye, raise the temperature to 60°C at a rate of 30°C / hour, and react for 3 hours to obtain the second mixed solution. The molar ratio is...

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 relates to an active yellowish brown dye semi-finished product, the chemical structural formula of which is as shown in formula (I): the structural formula is as shown in the specification (I). In the molecular formula, only the azo group is connected with the phenyl group, and sulfuryl group and acyl group, which forcibly pull electron, are connected with the phenyl group, so that the fixation rate and the deep dyeing property of the active yellowish brown dye semi-finished product can be improved. And the active yellowish brown dye semi-finished product is simple in synthesis method, mild in condition and suitable for large-scale popularization.

Description

technical field [0001] The invention belongs to the field of organic dyes and relates to a semi-finished dye, in particular to a method for preparing a semi-finished reactive khaki dye. Background technique [0002] Reactive dyes, also known as reactive dyes, are a class of dyes that chemically react with fibers during dyeing. Such dye molecules contain groups that can chemically react with fibers. When dyeing, the dyes react with the fibers and form covalent bonds between them to form a whole, which improves the fastness to washing and rubbing. Existing reactive khaki dyes are monomeric compounds, and the dyeing fastness of such dyes is relatively low, especially the shade brightness is relatively poor, the dust is large during use, and it is not easy to wash. Therefore, a semi-finished product of active khaki dye is synthesized, which is used to prepare reactive khaki dye, so as to reduce the dust and the amount of foam during use, thereby improving the washing effect. ....

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
Patent Type & Authority Patents(China)
IPC IPC(8): C07C317/36C07C315/04C09B62/515
Inventor 庄永祥陆再宏陆海英
Owner 苏州澳缘盛新材料科技有限公司
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