KR101109304B1 - Method for manufacturing cation dyeable polyamide yarn - Google Patents

Abstract

The present invention relates to a method for producing a cation salted polyamide fiber, and more particularly, fastness and stability by blending a dye or a pigment in ε-caprolactam and 5-SSIPA (sodiosulfo isophthalic acid) polymer The present invention relates to a method for producing a polyamide fiber having excellent formation and a method for producing a fabric including the polyamide fiber produced by the method of the present invention.

Color fastness, shape retention, deep colorability, release property, cationic salted fiber, polyamide, caprolactam.

Description

Manufacturing method of cationic salt type polyamide fiber {METHOD FOR MANUFACTURING CATION DYEABLE POLYAMIDE YARN}

The present invention relates to a method for producing a cation salted polyamide fiber, and more particularly, fastness and stability by blending a dye or a pigment in ε-caprolactam and 5-SSIPA (sodiosulfo isophthalic acid) polymer The present invention relates to a method for producing a polyamide fiber having excellent formation and a method for producing a fabric comprising the polyamide fiber produced by the method of the present invention.

As a conventional method for producing a cationic salt polyamide fiber, as disclosed in Japanese Patent Laid-Open No. 2001-200054, a chemical substance containing a cationic salt type functional group such as sodium sulfonate salt is polymerized in the polymerization step of epsilon -capro It is known to prepare a polyamide fiber which can be dyed with a cationic dye by reacting with a lactam to produce a cationic salt type polymer polymer, and melting and spinning it at high speed.

However, the cationic salt polyamide fibers produced by this method are difficult to be produced to have a high color development of more than a medium color, especially in the case of producing a single yarn fineness 0.1 ~ 2.0 denier yarn is more disadvantageous in terms of color fastness.

On the other hand, in order to improve the color depth and color fastness, increasing the amount of sodium sulfonate added to increase the number of cationic salt deposits may cause a decrease in the spinability and mechanical properties of the fiber, such as strength, elongation. Therefore, the cationic salt polyamide prepared by this process has been used only for limited purposes such as being mixed with a nylon material prepared by melt spinning a general polyamide-based polymer for multicoloring in non-clothing materials such as carpet. .

In addition, in order to improve the drape or prosthetic functionality in fabric, the fabric of the yarn after melt spinning a polypropylene terephthalate or polybutylene terephthalate polymer having a longer chain length compared to general polyester fiber Examples of application to yarns are known. However, in this case, it has to be dyed under high pressure, and it is difficult to realize bright colors and difficult to express uniform prosthetic functions.

The present invention is to solve the problems of the prior art as described above, one object of the present invention is to provide a method for producing a cationic salted polyamide fiber excellent in color fastness and excellent drape and shape retention even in the deep color of the medium or more will be.

Another object of the present invention, by including the cationic salt type polyamide fiber prepared by the manufacturing method of the present invention as described above, exhibits the dichroism by the cationic saltability and at the same time has a high color fastness effect even in deep colors or more It is to provide a method for producing a fabric excellent in drape and moldability.

One aspect of the present invention for achieving the above object is a step of polymerizing a polymer by adding 0.5 to 3.0 parts by weight of 5-SSIPA based on 100 parts by weight of ε-caprolactam and dyes or It relates to a method for producing a cationic salt polyamide fiber comprising the step of high-speed spinning by blending the pigment 0.5 to 2.0 parts by weight.

In the method for preparing the cationic salt polyamide fiber according to one embodiment of the present invention, the spinning speed is 4000 m / min. It is characterized by the above.

The method for preparing the cationic salt type polyamide fiber according to the embodiment of the present invention is characterized in that the single yarn fineness is 0.5-2.0 denier.

Another aspect of the present invention for achieving the above object, after weaving the fabric by applying the cationic salted polyamide fiber prepared by the manufacturing method according to the present invention as the warp, weft, or theft weft of the fabric. , Dyeing with a cationic dye in the range of 80 ~ 98 ℃, heat treatment in the range of 100 ~ 140 ℃ relates to a fabrication method of the fabric.

The cationic salt polyamide fiber and the fabric comprising the same are produced by the method for preparing the cationic salt polyamide fiber according to the present invention, while exhibiting high color development even with a small amount of cationic dye, and having excellent wet fastness and drape. In terms of performance and formability, it shows superior performance compared to conventional nylon and polypropylene terephthalate fabrics.

In addition, the method of manufacturing the cationic salt polyamide fiber according to the present invention, it is possible to produce a good spinning workability without the generation of trimming or twisting in melt spinning the polyamide polymer at a high speed of more than 4,000m / min spinning speed , The prepared cationic salt polyamide fibers have an effect of good cross-sectional uniformity.

Hereinafter, the present invention will be described in more detail with reference to Examples. However, this is only for the purpose of illustrating the present invention in detail, it should not be construed that the present invention is limited thereto. In addition, in the description of the present invention, detailed descriptions of well-known general functions or configurations will be omitted.

Cationic salt polyamide fiber production method according to an embodiment of the present invention, the step of polymerizing the polymer by adding 0.5 to 3.0 parts by weight of 5-SSIPA (sodiosulfo isophthalic acid) based on 100 parts by weight of ε-caprolactam and the Blending 0.5 to 2.0 parts by weight of the dye or pigment with respect to 100 parts by weight of the polymer;

That is, in the preparation method according to the embodiment of the present invention, in preparing the cationic salt type polyamide polymer, 5-SSIPA containing sodium sulfonate salt is added so as to be 0.5 to 3.0 parts by weight based on the weight of ε-caprolactam. It is characterized by producing a type polymer, and spinning by melt spinning at a high speed of 4,000m / min or more spinning rate by adding 0.5 to 2.0 parts by weight of a dye or pigment relative to the weight of the cationic salt polyamide polymer.

The present invention will be described in more detail. In the preparation of the dibasic nylon microbacterial fiber having a single yarn fineness of 0.1 to 2.0 denier by direct spinning, the composition of the polymer is 5-SSIPA 0.5 to 3.0 with respect to 100 parts by weight of ε-caprolactam. It is composed of parts by weight.

At this time, if the content of 5-SSIPA is less than 0.5 parts by weight, the cationic salting performance is not expressed, and if it is 3.0 parts by weight or more, problems of deterioration of spinning workability and dyeing fastness occur. Poor bend recovery is seen.

Subsequently, 0.5 to 2.0 parts by weight of pigment or dye is added to 100 parts by weight of the dibasic polyamide polymer prepared as described above, blended, dried and extruded through an extruder to prepare a fiber. At this time, when the amount of the pigment or dye is more than 2.0 parts by weight, the increase in the number of trimming during the spinning operation causes a decrease in mechanical properties, less than 0.5 parts by weight it is difficult to expect the effect of improving the deep color and fastness. As the pigment or dye in the production method of the present invention, known pigments or dyes used in the art such as carbon black can be used without limitation.

In the method for producing a cationic salt type polyamide fiber according to an embodiment of the present invention, the spinning speed is preferably set to 4,000 m / min or more, and may be wound after stretching and heat treatment as necessary.

The cationic salt type polyamide fiber prepared by the above method is capable of deep color expression using a small amount of cationic dye and at the same time, expresses excellent fastness and has excellent drape and shape retention.

Another aspect of the present invention, after weaving the fabric by applying the cationic salt-coated polyamide fiber prepared by the manufacturing method according to the present invention as the warp, weft, or theodolite of the fabric, in the range of 80 ~ 98 ℃ Dyeing with a cationic dye, and relates to a method for producing a fabric which is dried by heat treatment in the range of 100 ~ 140 ℃.

More specifically, as described above, 0.5 to 3.0 parts by weight of 5-SSIPA is added to 100 parts by weight of ε-caprolactam to prepare a cationic salt polyamide polymer, and then 0.5 to 2.0 based on 100 parts by weight of the polymer. By weight of carbon black is added to prepare a yarn by a conventional melt spinning method.

That is, the cationic salt polyamide polymer containing the pigment is melt-extruded, cooled and solidified, and then emulsified, and then wound while applying entanglement by high pressure air to prepare a medical polyamide yarn having 0.5 to 2.0 denier.

Subsequently, the fabric is fabricated by applying twist to the polyamide yarn prepared in the above-described process to produce a fabric having excellent drape and moldability, and applying both weft or warp or warp yarns. Subsequently, the fabric prepared as described above is dyed with a cationic dye under a salt bath of 80 to 98 ° C., and then heat-set at a temperature of 100 to 140 ° C. to prepare a cationic salt-type fabric having excellent drape and moldability.

During the spinning process, the oil is added once or twice or more, and the first oil is preferably metered and lubricated to reduce the effects of airflow caused by high-speed spinning. It is good to do.

Example 1

The cationic salt polyamide polymer was prepared by using 5-SSIPA in an amount of 3 parts by weight based on 100 parts by weight of ε-caprolactam, and after drying the chip, the carbon black concentration was 2 parts by weight of 100 parts by weight of the cationic salt polyamide polymer. Blended to parts by weight. Subsequently, the blend was subjected to direct spinning after melt extrusion to prepare a polyamide fiber having a fineness of 70 deniers and a filament number of 68 (single fineness: 1.0 denier). In the spinning process, the speed of the cooling wind was 0.5 m / s, the filaments were focused at 100 cm below the spinneret, the spinning temperature was 265 ° C., and the spinning speed was 4,800 m / min.

Subsequently, the yarn prepared by the above process was twisted and twisted with 500TM, and then woven by applying a weft to the warp of polyamide 70 denier 34 filament. Subsequently, after dyeing with 0.5% Rifa cationic Black 2GH (Phosphorescence Dyestuff Co., Ltd.) at a temperature of 90 ° C. for 30 minutes, the fastness and color depth after drying at 140 ° C. were evaluated and the shape retention of the fabric was evaluated by sensory evaluation. The results are shown in Table 1.

Example 2

Example 1 except that 0.5 parts by weight of 5-SSIPA was added to 100 parts by weight of ε-caprolactam to prepare a polymer, and 0.5 parts by weight of carbon black was added and blended to 100 parts by weight of the polymer. The yarns were prepared in the same manner and the bactericidal and radioworkability were evaluated, and the results are shown in Table 1.

Comparative Example 1

After the spinning, weaving, and salt processing were performed without blending dyes or pigments such as carbon black using spinning cationic salt type polymers, the fastness and formability were evaluated, and the results are shown in Table 1. The concentration of the cationic dye during salting was 2.0 parts by weight based on 100 parts by weight of the fiber.

Comparative Example 2

The fastness and the shape retaining ability of the fabric were evaluated in the same manner as in Comparative Example 1 except that the concentration of the cationic dye was 4.0 parts by weight based on 100 parts by weight of the fiber during dyeing.

Comparative Example 3

After weaving, weaving, and dyeing in the same manner as in Comparative Example 1 without blending dyes or pigments such as carbon black using general nylon polymer, the fastness and formability of the fabric were evaluated, and the results are shown in Table 1. It was. During dyeing, the concentration of acid dye Neurilan Black LDH (Yorkshire) was dyed at 4.0 parts by weight based on 100 parts by weight of fibers.

Comparative Example 4

After weaving with 75 denier 72 filament yarn spun using polypropylene terephthalate polymer, 100 parts by weight of disperse dye Kayalon Polyester Black RV-SF fiber was dyed at 120 ° C. at 4.0 parts by weight and dried to 140 ° C. And prosthetic capacity was evaluated.

Table 1. Dyeing fastness and prosthetic functional evaluation

division Color fastness
(Fading) pollution Prosthetic function Deep color (L value) Nylon pollution Cotton pollution Example 1 4 4 4 O 13 Example 2 3-4 3-4 4 O 17 Comparative Example 1 3 3 3 O 18 Comparative Example 2 2-3 2 2-3 O 15 Comparative Example 3 4 4 4 X 13 Comparative Example 4 4 3-4 4 △ 14

① Fastness to washing: measured by KS K 1902 A-1 method

② Prosthetic function: The sensory evaluation results of 10 experienced evaluators are evaluated.

               Good O, Medium △, Bad X

③ Deep color: Measure * L * a * b value with chromatic spectrophotometer Evaluate black color deep color with L value.

The cationic salt polyamide fiber and the fabric produced by the method of the present invention is as shown in Table 1 in the case of the cationic salt polyamide fiber prepared without the addition of dyes or pigments in the yarn manufacturing step as in the prior art as shown in Table 1 Prosthetic functionalities are maintained but disadvantageous in terms of staining fastness, especially staining fastness, as in Comparative Example 1, and the decrease in the fastness becomes more pronounced when the concentration of the dye is increased for deep color expression. On the other hand, when using polypropylene terephthalate fibers known to be excellent in general nylon or prosthetic functional properties as in Comparative Examples 3 and 4, the dyeing fastness and deep colorability is excellent but the prosthetic functionality is somewhat inferior.

On the other hand, in the case of the cationic salt type polyamide fiber prepared as in Examples 1 and 2, it is possible to express the deep color effect even with a small amount of dye, and also shows excellent effect in terms of color fastness, especially stain fastness, and excellent prosthetic functional effect. Has

Although the present invention has been described in detail with reference to preferred embodiments of the present invention, the present invention is not limited to the above-described embodiments, and many modifications are made by those skilled in the art to which the present invention pertains within the scope of the technical idea of the present invention. This possibility will be self-evident.

Claims (6)

delete delete delete polymerizing the polymer by adding 0.5 to 3.0 parts by weight of 5-SSIPA based on 100 parts by weight of ε-caprolactam; And blending 0.5 to 2.0 parts by weight of dyes or pigments with respect to 100 parts by weight of the polymer, and spinning the fabric by applying a cationic salt-containing polyamide fiber prepared as a warp, or weft or warp yarn of the fabric. After that, dyeing with a cationic dye in the 80 ~ 98 ℃ range, and a method of producing a fabric, characterized in that the heat treatment by drying in the range of 100 ~ 140 ℃. The method of claim 4, wherein the spinning speed is 4,000 m / min. The manufacturing method of the fabric characterized by the above. The method of claim 4, wherein the single yarn fineness is 0.5-2.0 denier.