Dye for supercritical carbon dioxide dying and preparation and application of dye

A supercritical dye technology, applied in dyeing, azo dyes, organic dyes, etc., can solve the problem of energy consumption, achieve good solubility and simple synthesis process

Active Publication Date: 2013-11-27
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of these specific additives to pretreat or modify cotton requires a high degree of mo

Method used

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  • Dye for supercritical carbon dioxide dying and preparation and application of dye
  • Dye for supercritical carbon dioxide dying and preparation and application of dye
  • Dye for supercritical carbon dioxide dying and preparation and application of dye

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0028] Example 1

[0029] Dry the dye I, pulverize and put it into the dissolving tank according to the amount of 1% owf (owf refers to the weight ratio of dye and cotton fabric), then wind the cotton fabric on a stainless steel shaft, and fix it together under the high pressure of supercritical carbon dioxide. in the dye tank. Dyeing is carried out under the condition that the pressure reaches 15-20Mpa and the temperature reaches 60℃, the dyeing time is 1h, then the equipment is stopped, and the carbon dioxide is recovered after the temperature and pressure are reduced. The dyed cotton fabric was taken out and tested for color fastness and fixation. The specific data are shown in Table 1 and Table 2.

Example Embodiment

[0030] Example 2

[0031] Dye II was dyed according to the conditions of Example 1. The dyed cotton fabrics were tested for color fastness and fixation. The specific data are shown in Table 1 and Table 2.

Example Embodiment

[0032] Example 3

[0033] The dye I was dried, pulverized and put into the dissolving tank according to the amount of 1% owf, and then the cotton fabric was wound on the stainless steel shaft and fixed together in the high pressure dyeing tank of supercritical carbon dioxide. Dyeing is carried out under the condition that the pressure reaches 15-20Mpa and the temperature reaches 80℃, the dyeing time is 1h, then the equipment is stopped, and the carbon dioxide is recovered after the temperature and pressure are reduced. The dyed cotton fabric was taken out and tested for color fastness and fixation. The specific data are shown in Table 1 and Table 2.

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Abstract

The invention relates to a preparation method of dye and an application of the dye for supercritical carbon dioxide dying. The dye has a structural general formula as shown in specification, wherein R1 represents F or Cl, and R2 represents -N(CH3)2 or -N(C2H5)2. The dye is relatively moderate in dying condition, and is used for dying cotton fabrics under various conditions that the dying temperature is 60-100 DEG C, the dying duration is 1-3 hours, the dye concentration is 1-3%owf and the pressure is 200bar as well as used for implementing fastness and fixation rate tests on the dyed cotton fabrics.

Description

technical field [0001] The invention belongs to the field of textile printing and dyeing. It specifically relates to the preparation of a dye and its application in supercritical carbon dioxide dyeing. The dye adopts acyl halides as active groups to form stable chemical bonds with cotton fibers, realizing the application of the dye to pure cotton fabrics in supercritical carbon dioxide. Background technique [0002] Supercritical carbon dioxide dyeing, also known as anhydrous dyeing, was invented in 1989 by Schollmeyer, a scientist at the Northwest Fiber Research Center in Germany. Supercritical carbon dioxide dyeing has the following advantages: (1) No water is used during dyeing, and there is no waste water pollution; (2) The process of dyeing is not dried, which can shorten the process and save energy; (3) The dyeing speed is fast , good leveling and penetration, and good dyeing reproducibility; (4) dyes and carbon dioxide are easy to recycle; (5) no need to add surfact...

Claims

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Application Information

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IPC IPC(8): C09B29/08D06P1/94D06P3/60
CPCY02P20/54
Inventor 林锦新高丹黄婷婷崔红生杨大发
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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