Method for preparing colorant used in mass coloration of acrylic fibre spinning

A spinning dope and colorant technology is applied in the field of preparation of colorants for acrylic fiber spinning dope coloring, and can solve the problems that the colorants cannot be stored for a long time, are stably stored, and the pigments agglomerate and agglomerate.

Inactive Publication Date: 2004-01-07
SINOPEC SHANGHAI PETROCHEMICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing coloring method for producing colored acrylic fibers, the colorant usually cannot be stored stably for a long time, and pigment agglomeration is a common phenomenon. Generally, the weight median particle size of the pigment particles in the colorant is 1 μm

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0014] Stir and mix the required amount of 51.7wt% NaSCN solution of the required amount of dispersant alkylphenol polyoxyethylene ether in a ball mill first, then add the required amount of pigment carbon black, and continue stirring until fully mixed. Wherein, the content of pigment carbon black is 8wt%, and the weight ratio of pigment and dispersant is 100:30. Start grinding after mixing, the speed of the ball mill is controlled at 200 rpm, and the grinding time is 45 minutes. After analysis, the weight median particle size of the pigment particles in the product is 0.45 (μm); the weight specific surface area is 8.7967 (m 2 / g).

[0015] After the prepared colorant was placed for 50 days, the product was reanalyzed, and the results were as follows:

[0016] Weight median particle size: 0.47 (μm); Weight specific surface area: 7.9857 (m 2 / g). [Example 3]

Embodiment 3

[0017] Stir and mix the required amount of 51.7wt% NaSCN solution required for dispersant trimethylstearamide chloride in a ball mill first, then add required amount of pigment carbon black, and continue stirring until fully mixed. Wherein, the content of pigment carbon black is 8wt%, and the weight ratio of pigment and dispersant is 100:8. After the mixing is completed, start grinding, the speed of the ball mill is controlled at 200 rpm, and the grinding time is 1.0 hour. After analysis, the weight median particle size of the pigment particles in the product is 0.53 (μm); the weight specific surface area is 6.1870 (m 2 / g).

[0018] After the prepared colorant was placed for 50 days, the product was reanalyzed, and the results were as follows:

[0019] Weight median particle size: 0.57 (μm); Weight specific surface area: 5.8116 (m 2 / g). 【Example 4】

Embodiment 4

[0020] Stir the required amount of 51.7wt% NaSCN solution required for the dispersant hexadecyltrimethylamine bromide in a ball mill and mix thoroughly, then add the required amount of pigment carbon black and continue stirring until fully mixed. Wherein, the content of pigment carbon black is 25wt%, and the weight ratio of pigment and dispersant is 100:10. Start grinding after mixing, the speed of the ball mill is controlled at 200 rpm, and the grinding time is 5 hours. After analysis, the weight median particle size of the pigment particles in the product is 0.62 (μm); the weight specific surface area is 5.8362 (m 2 / g).

[0021] After the prepared colorant was placed for 50 days, the product was reanalyzed, and the results were as follows:

[0022] Weight median particle size: 0.65 (μm); Weight specific surface area: 5.2783 (m 2 / g). 【Example 5】

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Abstract

The preparation method of colouring material for mass coloration process in spinning of acrylic fibre includes the following steps: mixing pigment, dispersing agent and NaSCN aqueous solution and grinding by means of ball-grinding machine. In the colouring material the pigment content is 5-25 wt%, the weight ratio of pigment and dispersing agent is 100:3-30, and the grinding time is 0.5-5.0 hr., then the colouring material can be obtained. The above-mentioned dispersing agent is one compound selected from alkyl-polyoxyethylene ether, alkylphenol ethoxylates, trimethyl stearamide chloride or hexadecyltrimethylamine bromide or their mixture, and the pigment is cabron, black, phthalocyanine blue, iron oxide or ultramarine generally.

Description

technical field [0001] The invention relates to the preparation of a coloring agent for acrylic fiber spinning dope coloring, in particular to a preparation method of a coloring agent for producing colored acrylic fiber by adopting NaSCN wet spinning process dope coloring method. Background technique [0002] The production of colored acrylic fibers by dope dyeing before spinning is a new technology produced by the modern chemical fiber industry. It has developed rapidly and has been widely used in industrial applications. The main reason for the rapid development of acrylic dope dyed spinning technology is that compared with the traditional fiber and yarn dyeing process, it has many advantages such as low dyeing cost, uniform color of the obtained fiber, high color fastness, and convenient color matching. However, more importantly, since the coloring is carried out in the fiber production process, it will not produce a large amount of sewage like the dyeing and rinsing proc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F1/06
Inventor 马正升季春晓李荣安陈健裴福沪章毅
Owner SINOPEC SHANGHAI PETROCHEMICAL CO LTD
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