KR102240789B1 - Cation dyeable polyester fiber and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a cationic salted polyester fiber and a method for manufacturing the same, and more particularly, to a cationic salted polyester fiber having excellent elasticity, workability, and operability, and excellent cationic dyeing property, and a method for manufacturing the same.

Description

Cation dyeable polyester fiber and manufacturing method thereof TECHNICAL FIELD

The present invention relates to a cationic salted polyester fiber and a method for manufacturing the same, and more particularly, to a cationic salted polyester fiber having excellent elasticity, workability, and operability, and excellent cationic dyeing property, and a method for manufacturing the same.

Side-by-side type polyester composite fiber was developed in various ways until the mid-1980s due to its high utilization as a functional fiber through the development of deformable cross section technology and alkali reduction technology in the 1970s.

As a kind of polyester composite fiber, latent crimped yarn is a fiber composed of two types of polyesters with different shrinkages in a side-by-side type or core-shell type. It is a bimetallic composite yarn that not only provides a comfortable stretch function when crimping is expressed, but also has a unique surface characteristic and excellent resilience, which is particularly important in recent textile products, such as resilience (Hari), stiffness (Koshi), resilience, and It has features that can significantly improve the tactile feel.

Latent crimped yarn has good elasticity and resilience, so it is applied to products such as casual suits, dresses, blouses, and knits, but it is not as strong as elasticity or resilience like span, but it has adequate elasticity and resilience as the synthetic fiber itself. The demand for woven fabrics and knitted fabrics using these is expanding globally in line with the fashion trend.

However, these products have already been commercialized, and in order to express their individuality in accordance with the gradually diversified social environment, there were cases whereby individuals demanded melange tone and the sensitivity of the above-described latent crowbar. Since salting is not possible, its use is limited. Accordingly, it is necessary to develop polyester fibers having excellent elasticity, workability, and operability, and at the same time having excellent cationic dyeing properties.

KR 10-2011-0124440 A (published on 2011.11.17)

The present invention has been conceived to solve the above problems, and the object of the present invention is to provide a cationic salted polyester fiber having excellent elasticity, workability and operability, and excellent cationic dyeing property, and a method for manufacturing the same. .

In addition, another problem to be solved of the present invention is to provide a blended yarn and a fabric having excellent elasticity and excellent cationic dyeing property, including the cathion salted polyester fiber.

In order to solve the above problems, the present invention includes a first component and a second component, and includes a plurality of monofilaments having a side-by-side cross-sectional shape, and the first component is a monomer represented by the following formula (1). 4 to 12 mol% and 0.3 to 3 mol% of the monomer represented by Chemical Formula 2, and the modified polyethylene terephthalate copolymerized, and the second component contains 0.3 to 3 mol% of the monomer represented by the following Chemical Formula 2 It provides a cationic salt-type polyester fiber comprising a modified polyethylene terephthalate copolymerized, including.

[Formula 1]

[Formula 2]

In Formula 2, R ¹ and R ² are each independently a C ₁ to C ₆ alkyl group.

According to a preferred embodiment of the present invention, the first component and the second component may have a difference in intrinsic viscosity of 0.13 to 0.33 dl/g.

According to another preferred embodiment of the present invention, the monofilament may have a fineness of 1.3 to 4.2 denier (de').

According to another preferred embodiment of the present invention, a fineness of 40 to 140 denier (de') may include a multifilament including 10 to 50 monofilaments.

According to another preferred embodiment of the present invention, the monofilament may include the first component and the second component in a weight ratio of 30:70 to 70:30.

According to another preferred embodiment of the present invention, both of the following conditions (1) and (2) may be satisfied.

(1) Number of spheres of expression 4.5 ~ 7.5/cm

(2) The micro-crimping is less than 3.5 cycles/cm.

Meanwhile, in order to solve the above-described problems, the present invention is a modified polyethylene terephthalate copolymerized by including (1) 4 to 12 mol% of the monomer represented by the following formula 1 and 0.3 to 3 mol% of the monomer represented by the formula 2 Melting a second component comprising a modified polyethylene terephthalate copolymerized by including a first component and a monomer represented by the following formula (2) in an amount of 0.3 to 3 mol%; And (2) preparing a polyester fiber comprising a monofilament obtained by multi-spinning each of the first component and the second component melted. It provides a method for producing a cationic salted polyester fiber comprising.

[Formula 1]

[Formula 2]

In Formula 2, R ¹ and R ² are each independently a C ₁ to C ₆ alkyl group.

According to a preferred embodiment of the present invention, the first component and the second component may have a difference in intrinsic viscosity of 0.13 to 0.33 dl/g.

According to another preferred embodiment of the present invention, in the composite spinning, the first component and the second component may be combined with a weight ratio of 30:70 to 70:30.

According to another preferred embodiment of the present invention, after the step (2), (3) the monofilament is subjected to lubrication treatment and then stretching; And (4) heat setting the stretched monofilament.

According to another preferred embodiment of the present invention, the stretching in step (3) is the first stretching at a rate of 1,000 to 2,000 mpm under 80 to 100°C, and then continuously at a speed of 3,000 to 5,500 mpm under 120 to 140°C. It is possible to perform secondary stretching.

According to another preferred embodiment of the present invention, the stretching in step (3) may be performed at a draw ratio of 2.2 to 3.6 times.

According to another preferred embodiment of the present invention, step (4) may be performed at 120 to 150°C.

On the other hand, in order to solve the above-described problem, the present invention provides a blended yarn comprising the above-described cationic salted polyester fiber.

On the other hand, in order to solve the above-described problem, the present invention provides a fabric including the above-described cationic salted polyester fiber.

The cationic salted polyester fiber of the present invention and its manufacturing method have excellent elasticity, workability, and operability, and at the same time, excellent cationic dyeing properties.

1 is a schematic diagram of a side-by-side type cross-sectional composite fiber according to a preferred embodiment of the present invention.

Hereinafter, the present invention will be described in more detail through the method of manufacturing the cathion salted polyester fiber of the present invention.

As described above, the conventional latent crimped yarn is not capable of chlorinating cationic yarn, so there is a problem in that its use is limited.

Accordingly, the present invention includes (1) a first component comprising a modified polyethylene terephthalate copolymerized by including a monomer represented by the following formula (1) and a monomer represented by formula (2) in a specific molar ratio, and a monomer represented by the following formula (2). Melting each of the second components including the copolymerized modified polyethylene terephthalate; And (2) preparing a polyester fiber comprising a monofilament obtained by multi-spinning each of the first component and the second component that has been melted. I sought a solution. Through this, it is possible to achieve excellent elasticity, workability, and operability, and at the same time, excellent cationic dyeing properties.

First, the step (1) of melting the first component and the second component, respectively, will be described.

The difference in intrinsic viscosity between the first component and the second component may be 0.13 to 0.33 dl/g, preferably 0.15 to 0.30 dl/g, and more preferably 0.18 to 0.25 dl/g. If the difference in intrinsic viscosity between the first component and the second component is less than 0.13 dl/g, there may be a problem of insufficient crimp rate, and if the intrinsic viscosity difference exceeds 0.33 dl/g, the radioactivity is poor, resulting in trimming or detention. There may be a problem such as the occurrence of howitzer due to this poor.

The first component is a PET chip having a relatively high intrinsic viscosity, and preferably has an intrinsic viscosity of 0.6 to 0.8 dl/g, preferably 0.65 to 0.75 dl/g. At this time, if the intrinsic viscosity of the first component is less than 0.6 dl/g, the difference in intrinsic viscosity with the second component is too small, so there may be a problem of poor thermal contraction stress and shrinkage, and the intrinsic viscosity of the first component is 0.8 dl/g. If it exceeds, the difference in intrinsic viscosity with the second component becomes too large, and there may be a problem in that a discharge defect and a radioactive defect (triangle) occur.

In addition, the second component is a PET chip having a relatively low intrinsic viscosity, and the intrinsic viscosity is preferably 0.5 to 0.7 dl/g, preferably 0.55 to 0.68 dl/g. At this time, if the intrinsic viscosity of the second component is less than 0.5 dl/g, the difference in intrinsic viscosity with the first component may become too large and there may be a problem that radioactive defects (trimulation) due to discharging defects occur, and the intrinsic viscosity of the second component When is greater than 0.7 dl/g, the difference in intrinsic viscosity with the first component becomes too small, and thus there may be a problem that the degree of improvement in the thermal contraction stress and crimp rate of the latent crimping yarn is insignificant.

On the other hand, the first component is a monomer represented by the following formula (1) 4 ~ 12 mol%, preferably 5 ~ 10 mol%, the monomer represented by the formula (2) 0.3 ~ 3 mol%, preferably 0.7 It contains a modified polyethylene terephthalate copolymerized by including ~ 2 mol%. If the monomer represented by Formula 1 is less than 4 mol%, there may be a problem of poor strength, and if it exceeds 12 mol%, there is a problem of poor elasticity, workability, and workability of the fiber. In addition, if the monomer represented by Formula 2 is less than 0.3 mol%, there may be a problem of poor dyeing property, and if it exceeds 3 mol%, the strength, elasticity, workability, and operability of the fiber may be poor.

[Formula 1]

[Formula 2]

In Formula 2, R ¹ and R ² are each independently a C ₁ to C ₆ alkyl group, preferably a C ₁ to C ₃ alkyl group.

In addition, the second component includes a modified polyethylene terephthalate copolymerized by including 0.3 to 3 mol%, preferably 0.7 to 2 mol%, of a monomer represented by the following formula (2). If the monomer represented by Formula 2 is less than 0.3 mol%, there may be a problem with poor dyeing properties, and as the cycle of microcrimping increases, workability and operability may be poor. If it exceeds 3 mol%, the fiber Elasticity, workability and operability may not be good.

In addition, the first component and the second component are melted for the composite spinning of step (2) to be described later, wherein the first component is at a temperature of 270 to 300°C, preferably 275 to 290°C, more preferably It is better to melt it by applying a temperature of 278 to 285℃. Further, the second component is melted by applying a temperature of 260 to 290°C, preferably 265 to 285°C, and more preferably adding a temperature of 270 to 280°C. At this time, if the melting temperature is out of the above range, there may be a problem in that the first component and/or the second component are not properly melted, or weight deviation (denier) occurs due to discharge pressure hunting.

Next, a step (2) of producing a polyester fiber including monofilaments obtained by multispinning each of the melted first and second components will be described.

The complex radiation may be performed through complex radiation confinement, in which case, the complex radiation confinement may use a general complex radiation confinement used in the art, and a preferred embodiment is, for example, an odd number of 10 per 114.5φ detention area. The number of odds per ~ 50 holes, preferably 12 ~ 48 holes, more preferably 114.5φ detention area may be 20 ~ 40 holes. In addition, a composite spinneret including a spinneret having a composite spin angle of 10 ° to 25 °, preferably 18 ° to 25 °, and more preferably a composite spin angle of 18 ° to 20 ° may be used.

In this case, when the number of odds per 114.5φ of detention area is less than 12 holes, the productivity decreases, and when the number of odds per 114.5φ of detention area exceeds 48 holes, there is a problem in that radioactivity is deteriorated. And, if the composite radiation angle is less than 10°, there may be a problem of poor radioactivity due to poor discharge due to the occurrence of howitzer during the discharge of detention, and if it exceeds 25°, there may be a problem that the production cost of detention is increased due to the small number of odds produced.

In addition, the shape of the discharge hole of the complex radioactive confinement may be a diagonal shape, and the complex radiological confinement may have a circular flow path shape, but is not limited thereto.

During complex spinning, the discharge pressure of the melted first component is 100 to 170 kg/cm ² , preferably 140 to 150 kg/cm ² , and more preferably 142 to 148 kg/cm ² , At this time, if the discharging pressure of the melted first component is ^{less than 100 kg/cm 2} , there may be a problem that the first component having a relatively higher viscosity than the melted second component is discharged too little, resulting in weight deviation (denier). If the discharge pressure of the first component ^{exceeds 170 kg/cm 2} , there may be a problem in that a leakage of the fastening portion of the molten bolt occurs.

In addition, it is good to perform the discharge pressure of the melted second component to be 60 to 160 kg/cm ² , preferably 80 to 150 kg/cm ² , preferably 130 to 145 kg/cm ^2, At this time, if the discharging pressure of the melted second component is ^{less than 60 kg/cm 2} , there may be a problem that weight deviation (denier) occurs. If the discharging pressure of the second component resin ^{exceeds 160 kg/cm 2} , the first There may be a problem in that too much of the second component, which has a relatively low viscosity compared to the component, is discharged, causing a leak in the bolt fastener of the melter.

In addition, the combined spinning is preferably performed under a spinning speed of 1,400 to 1,650 m/min, preferably 1,450 to 1,600 m/min, and a spinning temperature of 270 to 280°C in terms of radioactivity. At this time, if the spinning speed is less than 1,400 m/min, the spinning workability is excellent, but there is a problem that fluff occurs due to excessive stretching, and if the spinning speed exceeds 1,650 m/min, the number of B/O increases too much and the filament is trimmed. There may be. Here, the B/O means that only some of the entire strands are cut off during the radiation trimming.

The composite spinning may be performed by combining the first component and the second component in a weight ratio of 30:70 to 70:30, preferably in a weight ratio of 40:60 to 60:40. If the weight ratio of the first component and the second component is less than 30:70 or exceeds 70:30, the filament during solidification may be blown out from peat, or the filament may be biased in one direction from the surface of the detention. As it occurs, spinning workability and operability may be remarkably poor.

And, it may further include the step of cooling the composite spun radiation, the cooling can be used a general cooling method used in the art, the cooling is a cooling temperature of 10 ~ 28 ℃, preferably 10 ~ 22 ℃ and cooling rate 0.20 ~ 0.60 m/sec, preferably 0.45 ~ 0.5 m/sec conditions, it is good to carry out, in this case, if the cooling temperature is less than 10, there may be a problem that a deviation of solidification failure may occur, and it exceeds 28 If so, there may be a problem such as a decrease in elongation due to poor solidification. In addition, when the cooling rate is less than 0.20 m/sec, it is disadvantageous in terms of productivity, and when the cooling rate exceeds 0.60 m/sec, there may be a problem in that physical properties are deteriorated, and when the cooling rate exceeds 0.60 m/sec, radioactive defects (B/O generation) may occur.

On the other hand, the method for producing a cationic salted polyester fiber of the present invention comprises the steps of (3) after the above-described step (2) followed by (3) oil-lubricating the monofilament, and then stretching; And (4) heat setting the stretched monofilament.

First, a step (3) of stretching the monofilament after lubrication treatment will be described.

The lubrication treatment is performed to reduce friction such as post-processing, and can be performed by a general method used in the art, preferably using an oil-roll and an oil-guide. You can do it.

And, the three-step stretching can be performed by a general method used in the art, for a specific example, after performing the first stretching at a speed of 1,000 ~ 2,000 mpm under 80 ~ 100 ℃, and then continuously 120 ~ Secondary stretching can be performed at a speed of 3,000 to 5,500 mpm under 140°C. If the primary stretching temperature is less than 80°C or the secondary stretching temperature is less than 120°C, as the cycle of microcrimping increases, a problem of causing post-processing twist and poor weaving workability may occur. If the temperature exceeds 100° C. or the secondary stretching temperature exceeds 140° C., dyeing properties may be deteriorated and workability and operability may be poor.

In addition, the three-step stretching may be performed at a draw ratio of 2.2 to 3.6 times, and preferably at a draw ratio of 2.4 to 3.4 times. If the draw ratio is less than 2.2 times, a problem of poor fiber sensitivity may occur, and if the draw ratio exceeds 3.6 times, a problem of causing post-processing twist and poor weaving workability may occur as the cycle of microcrimping increases. I can.

Next, the step (4) of heat setting the stretched monofilament will be described.

The heat setting may be performed on the stretched filament under 120 to 150°C, more preferably under 120 to 145°C, and more preferably under 125 to 140°C. If the heat setting temperature is less than 120°C, problems that may cause post-processing twister and poor weaving workability may occur as the cycle of microcrimping increases. If the temperature exceeds 150°C, stretch, dyeability, and workability And there may be a problem that the operability is deteriorated.

On the other hand, the present invention is prepared through the above-described manufacturing method, including a first component and a second component, and the cross-sectional shape as shown in Figure 1 is a cationic salted polyester comprising a plurality of monofilaments of side-by-side type Provides fiber.

The cross-sectional shape of the monofilament may be a side-by-side type as shown in FIG. 1, and a fineness of 1.3 to 4.2 denier (de'), preferably 1.4 to 4.1 denier (de').

And, the cationic salt-type polyester fiber of the present invention contains 10 to 50, preferably 12 to 48 monofilaments, and a fineness of 60 to 160 denier (de'), preferably 70 to 150 denier ( de') may include a multi-filament.

On the other hand, the cationic salted polyester fiber may satisfy both of the following conditions (1) and (2).

As condition (1), the number of crimped expressions may be 4.5 to 7.5/cm, preferably 5.5 to 6.5/cm, and as condition (2), the microcrimpeds are 3.5 cycles/cm or less, preferably 3 cycles/cm or less. I can. If the number of rolls of expression is less than 4.5/cm or the number of rolls of expression exceeds 7.5/cm, problems may occur during weaving or spinning. In addition, if the micro-crimping exceeds 3.5 cycles/cm, post-processing twist and poor weaving workability may be largely caused.

In addition, the cationic salted polyester fiber may have a fluff number of 0.05 pieces/106m or less, preferably 0.04 to 0.0001 pieces/106m. And, the uniformity (everness) representing the characteristic of the fineness deviation in the longitudinal direction may be 1.0 to 2.0%, preferably 1.0 to 1.85%, and more preferably 1.1 to 1.5%. In addition, the oil pick-up property may be 0.6 to 1.15%, preferably 1.0 to 1.15%, more preferably 1.05 to 1.12%, but is not limited thereto.

The specific description of the cationic salted polyester fiber of the present invention will be omitted in the same manner as the description of the above-described manufacturing method.

As described above, the cationic salted polyester fiber of the present invention has excellent elasticity and excellent cationic dyeing property. Furthermore, after manufacturing a fabric and/or a knitted fabric of the cationic salty polyester fiber of the present invention, it is used for casual wear such as shirts, jackets, pants, formal wear such as women's suits, dresses, underwear such as lingerie, underwear, socks, High-functionality and high-sensitivity products such as curtains and sports accessories can be manufactured.

Hereinafter, the present invention will be described through the following examples. At this time, the following examples are only presented to illustrate the invention, and the scope of the present invention is not limited by the following examples.

[ Example ]

Example One : Cathion Salty Preparation of polyester fiber

A polyethylene terephthalate chip having an intrinsic viscosity of 0.75 dl/g modified to 8 mol% of the monomer represented by the following formula (1) and 1.1 mol% of the monomer represented by the following formula (2) as a first component, and a second component represented by the following formula (2). Polyethylene terephthalate chips having an intrinsic viscosity of 0.55 dl/g modified to 1.1 mol% of the monomer were prepared, respectively. The prepared first component and second component were melted at 280° C. and 275° C., respectively, and then the first and second components melted using a complex spinneret having an odd number of 24 holes per 114.5 φ of detention area were combined-spinning.

At this time, the shape of the discharge hole of the composite spinneret was a diagonal line, and the composite spinneret had a circular flow path shape. And, the discharge pressure for the melted first component was 135kg/㎠, the discharge pressure for the melted second component was 100 kg/cm2, the combined spinning temperature was 275℃, and the B/H (bottom heater) temperature was 280. ℃, and the spinning speed was 4500m/min. In addition, the melted first component and the second component were performed at a combined spinning ratio of 50:50 by weight. The discharged filament was cooled under conditions of 0.47 m/sec and 1,000 mm in length under 15 to 16°C.

Next, the cooled filament was subjected to lubrication treatment in an oil roll, and then it was first stretched at a rate of 1,500 mpm at 92°C, and then secondarily stretched at a rate of 4,500 mpm at 130°C. Thereafter, the stretched filaments were heat-set at 125°C, and the heat-set filaments were blended to prepare polyester fibers in the form of blended yarns. The prepared polyester fiber contained 24 monofilaments and had a fineness of 100 denier (de').

[Formula 1]

[Formula 2]

In Formula 2, R ¹ and R ² are methyl groups.

Example 2 to 28 and Comparative example 1 to 6

Conducted in the same manner as in Example 1, but as shown in Tables 1 to 5 below, the mole% of the monomers represented by Formulas 1 and 2 in the first component, the mole% of the monomers represented by Formula 2 in the second component, and composite During spinning, the weight ratio of the first component and the second component, the stretching ratio, the stretching temperature and the heat setting temperature were changed to prepare a polyester fiber.

Experimental Example 1: Measurement of elongation and strength

For the polyester fibers according to Examples 1 to 28 and Comparative Examples 1 to 6, elongation and strength were measured by applying a speed of 200 cm/min and a gripping distance of 50 cm using an automatic tensile tester (STATIMAT DS, textechno). . Specifically, the strength was obtained by dividing the load applied when stretched until cut by applying a constant force to the polyester fibers according to Examples and Comparative Examples (g/de), and the initial length to the increased length Elongation was measured by expressed as a percentage, and is shown in Tables 1 to 5 below.

Experimental Example 2: Measurement of the number of expression crimped

For the polyester fibers according to Examples 1 to 28 and Comparative Examples 1 to 6, the number of expression crimps was measured and shown in Tables 1 to 5 below. Specifically, after the filament was treated in non-water for 10 minutes, it was immersed in cold water for 1 minute. Then, after taking it out and drying it naturally, it was placed on a glass plate, and after reading the mountains and valleys at 1cm intervals, the total was divided by 2. After repeatedly measuring 10 filaments according to each Example and Comparative Example, the average value was calculated and shown in Tables 1 to 5 below.

Experimental Example 3: Measurement of micro-crimping

For the polyester fibers according to Examples 1 to 28 and Comparative Examples 1 to 6, the number of crimps per 1 cm of the polyester fibers according to Examples and Comparative Examples was counted under no tension, and microcrimped was measured in Tables 1 to 5 below. Indicated.

Experimental Example 4: Dyeing property measurement

In order to measure the dyeing properties of the polyester fibers according to Examples 1 to 28 and Comparative Examples 1 to 6, a sample of a woven fabric of width x length, 10 cm x 10 cm was prepared, and the prepared sample was cationic dye (basic blue) in a bath ratio 40: 1 In a salt bath adjusted to pH 5 with an acetic acid buffer solution having a dye concentration of 3% (owf), the temperature was raised from 50°C to 100°C for 30 minutes, and then stained by holding for 10 minutes. In order to measure the dyeability, the colorimetric color difference was measured using a spectrophotometer (macbeth color eye 3100, usa), and the combined values by measuring the surface reflectance are shown in Tables 1 to 5 below (◎-very excellent, ○-Excellent, △-Moderate, ×-Bad).

Experimental Example 5: Evaluation of workability and operability

For the polyester fibers according to Examples 1 to 28 and Comparative Examples 1 to 6, the number of threads for 24 hours was measured to evaluate workability and operability, and are shown in Tables 1 to 5 below (◎-Very excellent , ○-Excellent, △-Moderate, ×-Bad).

division Example
One Example
2 Example
3 Example
4 Example
5 Example
6 Example
7 First ingredient Formula 1 (mol%) 8 2 5 10 15 8 8 Formula 2 (mol%) 1.1 1.1 1.1 1.1 1.1 0.1 0.7 Second ingredient Formula 2 (mol%) 1.1 1.1 1.1 1.1 1.1 1.1 1.1 complex
radiation 1st component 2nd component weight ratio 50:50 50:50 50:50 50:50 50:50 50:50 50:50 Stretching 1st stretching (mpm) 1500 1500 1500 1500 1500 1500 1500 2nd stretching (mpm) 4500 4500 4500 4500 4500 4500 4500 Draw ratio
(ship) 3 3 3 3 3 3 3 Primary stretching temperature
(℃) 92 92 92 92 92 92 92 Heat setting Temperature
(℃) 125 125 125 125 125 125 125 Elongation (%) 19.67 29.23 23.62 18.65 13.14 24.89 22.68 Strength (g/de) 3.31 2.42 3.01 3.11 2.99 3.79 3.58 Number of expression windings (/cm) 6 4.2 5.6 6.4 9.6 4.3 5.5 Micro crimped
(Cycle/cm) 2.5 1.5 1.9 3.1 3.9 2.5 2.5 Dyeability ◎ ◎ ◎ ◎ ◎ × ○ Workability and operability ◎ ◎ ○ ○ × ◎ ◎

division Example
8 Example
9 Example
10 Example
11 Example
12 Example
13 Example
14 First ingredient Formula 1 (mol%) 8 8 8 8 8 8 8 Formula 2 (mol%) 2 5 1.1 1.1 1.1 1.1 1.1 Second ingredient Formula 2 (mol%) 1.1 1.1 0.1 0.7 2 5 1.1 complex
radiation 1st component 2nd component weight ratio 50:50 50:50 50:50 50:50 50:50 50:50 20:80 Stretching 1st stretching (mpm) 1500 1500 1500 1500 1500 1500 - 2nd stretching (mpm) 4500 4500 4500 4500 4500 4500 - Draw ratio
(ship) 3 3 3 3 3 3 - Primary stretching temperature
(℃) 92 92 92 92 92 92 - Heat setting Temperature
(℃) 125 125 125 125 125 125 - Elongation (%) 21.94 11.21 13.2 15.99 21.02 10.2 - Strength (g/de) 2.98 1.98 3.79 3.37 2.9 1.78 - Number of expression windings (/cm) 6.4 8.4 8.1 7.4 3.4 0.2 - Micro crimped
(Cycle/cm) 3.2 4.1 3.9 3.4 1.2 0.1 - Dyeability ○ ◎ × ○ ○ ◎ - Workability/Workability ○ × × ○ ○ × Non-radiation

division Example
15 Example
16 Example
17 Example
18 Example
19 Example
20 Example
21 First ingredient Formula 1 (mol%) 8 8 8 8 8 8 8 Formula 2 (mol%) 1.1 1.1 1.1 1.1 1.1 1.1 1.1 Second ingredient Formula 2 (mol%) 1.1 1.1 1.1 1.1 1.1 1.1 1.1 complex
radiation 1st component 2nd component weight ratio 40:60 60:40 80:20 50:50 50:50 50:50 50:50 Stretching 1st stretching (mpm) 1500 1500 - 2250 1875 1325 1125 2nd stretching (mpm) 4500 4500 - 4500 4500 4500 4500 Draw ratio
(ship) 3 3 - 2 2.4 3.4 4 Primary stretching temperature
(℃) 92 92 - 92 92 92 92 Heat setting Temperature
(℃) 125 125 - 125 125 125 125 Elongation (%) 19.83 19.12 - 24.63 22.29 18.34 14.63 Strength (g/de) 3.21 3.23 - 2.51 3.23 3.54 3.62 Number of expression windings (/cm) 4.2 5.1 - 4.2 5.5 6.5 7.7 Micro crimped
(Cycle/cm) 2.0 2.1 - 1.8 2.2 3 3.7 Dyeability ○ ○ - ◎ ◎ ○ ○ Workability/Workability ○ ○ Non-radiation ◎ ◎ ○ △

division Example
22 Example
23 Example
24 Example
25 Example
26 Example
27 Example
28 First ingredient Formula 1 (mol%) 8 8 8 8 8 8 8 Formula 2 (mol%) 1.1 1.1 1.1 1.1 1.1 1.1 1.1 Second ingredient Formula 2 (mol%) 1.1 1.1 1.1 1.1 1.1 1.1 1.1 complex
radiation 1st component 2nd component weight ratio 50:50 50:50 50:50 50:50 50:50 50:50 50:50 Stretching 1st stretching (mpm) 1500 1500 1500 1500 1500 1500 1500 2nd stretching (mpm) 4500 4500 4500 4500 4500 4500 4500 Draw ratio
(ship) 3 3 3 3 3 3 3 Primary stretching temperature
(℃) 75 85 97 110 92 92 92 Heat setting Temperature
(℃) 125 125 125 125 110 145 160 Elongation (%) 43 25 22 28 29.4 15.6 10.1 Strength (g/de) 3.30 3.32 3.42 3.21 3.12 3.42 3.02 Number of expression windings (/cm) 6.1 6 5.6 4.3 6.1 5.6 4.2 Micro crimped
(Cycle/cm) 3.7 2.9 2.5 2.5 3.6 2.4 2.4 Dyeability ◎ ◎ ○ △ ◎ ○ △ Workability/Workability △ ○ ○ × △ ○ ×

division Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 First ingredient Formula 1 (mol%) - 8 8 - - 8 Formula 2 (mol%) 1.1 - 1.1 - - - Second ingredient Formula 2 (mol%) 1.1 1.1 - 1.1 - - complex
radiation 1st component 2nd component weight ratio 50:50 50:50 50:50 50:50 50:50 50:50 Stretching 1st stretching (mpm) 1500 1500 1500 1500 1500 1500 2nd stretching (mpm) 4500 4500 4500 4500 4500 4500 Draw ratio
(ship) 3 3 3 3 3 3 Primary stretching temperature
(℃) 92 92 92 92 92 92 Heat setting Temperature
(℃) 125 125 125 125 125 125 Elongation (%) 22.23 22.58 21.11 21.03 20.25 21.38 Strength (g/de) 2.31 3.45 3.79 2.52 3.01 4.23 Number of expression windings (/cm) 3.9 7.3 9.1 2.7 3.9 8.4 Micro crimped
(Cycle/cm) 2.2 4.1 7.5 1.1 2.2 5.7 Dyeability ○ × × △ × × Workability and operability ◎ △ × ◎ ◎ △

As can be seen from Tables 1 to 5, the mole% of the monomers represented by Chemical Formulas 1 and 2 according to the present invention, the mole% of the monomers represented by Chemical Formula 2 in the second component, the first component and the second component during complex spinning It can be seen that the polyester fiber that satisfies all of the weight ratio of the components, the stretching ratio, the stretching temperature and the heat setting temperature, etc. is excellent in all of the elasticity, strength, dyeing property, workability and operability.

Claims (15)

It includes a first component and a second component, and includes a plurality of monofilaments having a side-by-side cross-sectional shape,
The first component comprises a monomer represented by the following formula (1) and polyethylene terephthalate modified with a monomer represented by the formula (2),
The second component includes polyethylene terephthalate modified with a monomer represented by the following formula (2),
The first component comprises 5 to 12 mol% of the monomer represented by Formula 1 and 0.3 to 3 mol% of the monomer represented by Formula 2,
The second component contains 0.3 to 3 mol% of the monomer represented by Formula 2,
Cationic salted polyester fibers satisfying all of the following conditions (1) and (2):
(1) Number of spheres of expression 4.5 ~ 7.5/cm
(2) Less than 3.5 cycles/cm of microcrimp:

[Formula 1]

[Formula 2]

In Formula 2, R ¹ and R ² are each independently a C ₁ to C ₆ alkyl group. The method of claim 1,
The first component and the second component have a difference in intrinsic viscosity of 0.13 to 0.33 dl/g of cationic salted polyester fiber. The method of claim 1,
The monofilament has a fineness of 1.3 to 4.2 denier (de') of a cationic salted polyester fiber. The method of claim 1,
The fineness of 40 to 140 denier (de'), and the monofilament of 10 to 50, including a multi-filament containing a cationic salt-type polyester fiber. The method of claim 1,
The monofilament is a cationic salted polyester fiber comprising the first component and the second component in a weight ratio of 30:70 to 70:30. delete (1) A first component comprising polyethylene terephthalate modified with a monomer represented by the following Formula 1 and a monomer represented by Formula 2, and a second component comprising polyethylene terephthalate modified with a monomer represented by the following Formula 2 Melting each; And
(2) preparing a polyester fiber comprising a monofilament obtained by multispinning each of the first and second components melted;
(3) after the monofilament is subjected to a lubrication treatment, stretching at a draw ratio of 2.4 to 3.6 times; And
(4) heat setting the stretched monofilament; Including,
The first component comprises 5 to 12 mol% of the monomer represented by Formula 1 and 0.3 to 3 mol% of the monomer represented by Formula 2,
The second component is a method for producing a cationic salted polyester fiber, characterized in that it contains 0.3 to 3 mol% of the monomer represented by the formula (2):
[Formula 1]

[Formula 2]

In Formula 2, R ¹ and R ² are each independently a C ₁ to C ₆ alkyl group. The method of claim 7,
The first component and the second component have a difference in intrinsic viscosity of 0.13 to 0.33 dl/g. The method of claim 7,
The composite spinning method for producing a cationic salted polyester fiber in which the first component and the second component are combined-spun in a weight ratio of 30:70 to 70:30. delete The method of claim 7,
The stretching of the step (3) is a cationic salted polyester performing the first stretching at a rate of 1,000 to 2,000 mpm under 80 to 100 °C, and then continuously performing the secondary stretching at a rate of 3,000 to 5,500 mpm under 120 to 140 °C. Fiber manufacturing method. delete The method of claim 7,
The step (4) is a cation salt-type polyester fiber manufacturing method performed at 120 ~ 150 ℃. The blended yarn comprising the cationic salted polyester fiber of any one of claims 1 to 5. A fabric comprising the cationic salted polyester fiber of any one of claims 1 to 5.

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