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Contractibility acrylonitrile fiber capable of hypothermia staining

An acrylonitrile fiber, low-temperature dyeing technology, applied in the chemical characteristics of fibers, adding dyes in spinning solutions, textiles and papermaking, etc., can solve the problems of increased loss, increased cost, increased consumption, etc., to achieve the effect of widespread use

Inactive Publication Date: 2006-10-25
JAPAN EXLAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the case of dope-dyed fibers, there are problems in that arbitrary colors cannot be easily obtained or dope-dyed fibers of many colors must be stored in advance, and it is not suitable for small-lot production, etc.
In addition, when dyeing tow, although it can be dyed to any color, there are problems such as the need to use a tow processing machine or increase the loss during processing, etc.
However, the sulfonic acid component present in the center of the fiber is difficult to contribute to the fastening of the dye, and the amount of the monomer containing sulfonic acid increases. Therefore, in addition to the uneven dyeing caused by the accelerated dyeing speed, it will also lead to an increase in cost

Method used

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  • Contractibility acrylonitrile fiber capable of hypothermia staining
  • Contractibility acrylonitrile fiber capable of hypothermia staining

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～4

[0051] [Examples 1 to 4, Comparative Example 1]

[0052] In 900 parts of a 50% sodium thiocyanate aqueous solution, the acrylonitrile-based polymer A was dissolved in the ratio shown in Table 2, and the spinning stock solution X was prepared by adding and mixing the water-swellable polymer a dispersed in water. Separately, 100 parts of acrylonitrile-based polymer A was dissolved in 900 parts of a 50% aqueous solution of sodium thiocyanate to prepare a spinning dope Y. Through the ordinary side-by-side composite fiber spinning nozzle, the X / Y ratio is 50 / 50, according to the manufacturing method of the ordinary shrinkable acrylonitrile fiber, the spinning dope X and Y are composite-spun to make the implementation Fibers of Examples 1-4. In addition, as Comparative Example 1, fibers to which no water-swellable polymer was added were produced. Table 2 lists the evaluation results of the shrinkage rate, dyeability, dye saturation value and dyeing fastness of the obtained fibers....

Embodiment 5～7、 comparative example 2

[0057] In 900 parts of a 50% sodium thiocyanate aqueous solution, the acrylonitrile-based polymer B was dissolved in the ratio shown in Table 3, and a spinning dope was prepared by adding and mixing the water-swellable polymer dispersed in water. The resulting spinning dope was spun according to the manufacturing method of common shrinkable acrylic fibers. Table 3 lists the evaluation results of the shrinkage rate, dyeability, dye saturation value and dyeing fastness of the obtained fibers.

[0058] Example 5

[0059] As shown in Table 3, in Examples 5 to 7, dyeing was possible even at 75° C., and shrinkable acrylic fibers having sufficient color fastness were obtained. Comparing these examples, it is considered that the higher the degree of water swelling of the added water-swellable polymer, the higher the dye saturation value exhibited by the fiber, and the dyeability tends to be improved. In addition, in Examples 5 to 7, the water-swellable polymer was dispers...

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Abstract

A low temperature dyeable and contractible acrylic fiber is provided to obtain the practical color irrespective of dyeing at the low temperature. The contraction ratio of the low temperature dyeable and contractible acrylic fiber is below 15 % in the hot water of below 75 degrees centigrade. The contraction ratio thereof is above 15% when performing the wet heat treatment of 90-100 degrees centigrade or the dry heat treatment of 120-150 degrees centigrade. The fiber is dyeable at below 75 degrees centigrade and includes the water swelling polymer of 1-10 wt % obtained by the complex emission of the undiluted solution containing water swelling polymer and the undiluted solution with no water swelling polymer.

Description

technical field [0001] The present invention relates to shrinkable acrylic fibers capable of low temperature dyeing. Specifically, it relates to an acrylic fiber that can be dyed even at a lower temperature than the temperature at which complete shrinkage can be completely expressed, and can exhibit sufficient shrinkage after dyeing. Background technique [0002] Shrinkable acrylic fiber is a fiber that shrinks when heated, and in bulky yarns or plush fabrics, etc., expresses bulkiness due to its shrinkage. On the other hand, in the dyeing of acrylic fibers, the affinity of dyes increases rapidly from around 80°C, and dyeing is almost impossible below this temperature. Therefore, dyeing is usually carried out using a dyeing bath above 90°C. However, if the shrinkable acrylic fiber is dyed under such conditions, it gradually shrinks, and after dyeing, it hardly shows shrinkage. Therefore, when a large volume is required like a bulky thread or a plush fabric, it is necessary...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/18
CPCD01F1/06D01F6/18D10B2321/10D10B2401/14
Inventor 安芸泰雄
Owner JAPAN EXLAN CO LTD
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