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Method for preparing colorant used in producing color acrylic fibre by mass coloration method

A technology of dope coloring and coloring agent, which is applied in the direction of adding dyes to the spinning solution, which can solve the problems of pigment agglomeration, coloring agent cannot be stored for a long time, and stable storage

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] First, the required amount of 51.7wt% NaSCN solution of the required amount of dispersant methyl naphthalene sulfonate formaldehyde condensate is stirred and mixed thoroughly in a ball mill, then the required amount of pigment carbon black is added, and the stirring is continued until fully mixed. Wherein, the content of the pigment carbon black is 12wt%, and the weight ratio of the pigment to the dispersant is 100:10. After the mixing is completed, start grinding, the speed of the ball mill is controlled to 200 rpm, and the grinding time is 1.0 hour. After analysis, the weight median diameter of the pigment particles in the product is 0.44 (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 re-analyzed, and the results were as follows:

[0016] Weight median particle size: 0.46 (μm); weight specific surface area: 7.7857 (m 2 / g). [Example 3]

Embodiment 3

[0017] First, the required amount of 51.7wt% NaSCN solution of the required amount of dispersant benzyl naphthalene sulfonate formaldehyde condensate is stirred and mixed thoroughly in a ball mill, and then the required amount of pigment carbon black is added, and the stirring is continued until fully mixed. Among them, the content of the pigment carbon black is 25% by weight, and the weight ratio of the pigment to the dispersant is 100:20. After the mixing is completed, the machine is turned on for grinding, the speed of the ball mill is controlled at 200 rpm, and the grinding time is 3.0 hours. After analysis, the weight median particle size of the pigment particles in the product is 0.52 (μm); the weight specific surface area is 6.0250 (m) 2 / g).

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

[0019] Weight median particle size: 0.56 (μm); weight specific surface area: 5.4216 (m 2 / g). [Example 4]

Embodiment 4

[0020] First, the required amount of 51.7 wt% NaSCN solution of the dispersant naphthalenesulfonate formaldehyde condensate is stirred and mixed thoroughly in a ball mill, and then the required amount of pigment phthalocyanine blue is added, and the stirring is continued until fully mixed. Wherein, the content of the pigment phthalocyanine blue is 25% by weight, and the weight ratio of the pigment to the dispersant is 100:30. After the mixing is completed, the machine is turned on for grinding, the speed of the ball mill is controlled at 200 rpm, and the grinding time is 5 hours. After analysis, the weight median diameter of the pigment particles in the product is 0.49 (μm); the weight specific surface area is 8.7642 (m 2 / g).

[0021] After the prepared colorant was placed for 50 days, the product was re-analyzed. The results are as follows:

[0022] Weight median particle size: 0.52 (μm); weight specific surface area: 7.5538 (m 2 / g). [Example 5]

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PUM

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Abstract

The present invention relates to a preparation method of coloring material for producing colored acrylic fiber by adopting mass coloration process. Said method includes the following steps: mixing pigment, dispersing agent and NaSCN aqueous solution and grinding in ball-grinding machine, in the coloring material the pigment content is 5-25 wt%, the weight ratio of pigment and dispersing agent is 100:3-30, and the ginding time is 0.5-5.0, then the coloring material product can be obtained. The above-mentioned dispersing agent is one compound selected from naphthalenesulfonate formaldehyde condensate, methyl naphthalene sulfonate formaldehyde condensate or benzyl naphthalene sulfonate formaldehyde condensate or mixture of them, and the pigment is carbon black, phthalocyanine blue, iron oxide or ultrasmarine.

Description

Technical field [0001] The invention relates to the preparation of a coloring agent for the coloring of acrylic fiber spinning dope, in particular to a preparation method of a coloring agent for manufacturing a colored acrylic fiber by adopting the NaSCN wet spinning process dope coloring method. Background technique [0002] The production of colored acrylic fiber by coloring the dope before spinning is a new technology produced by the modern chemical fiber industry. It has developed rapidly and has been widely used in industrialization. The main reason for the rapid development of acrylic fiber dope coloring spinning technology is that compared with traditional fiber and yarn dyeing processes, it has many advantages such as low dyeing cost, uniform color of the obtained fiber, high color fastness, and convenient color matching. But more importantly, because the coloring is carried out during the fiber production process, it will not generate a lot of sewage like the dyeing and ...

Claims

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Application Information

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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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