KR20090076995A - Antistatic core-sheath type ultrafine-denier false-twisted polyester yarn, process for production thereof, and antistatic water-repellent fabrics comprising the yarn - Google Patents

Abstract

Since the false-twisted polyester yarn of the invention contains an antistatic component in a state enveloped in a sheath, the antistatic component is little deformed by false twisting. Therefore, the yarn little fluffs in false twisting and can give a polyester fabric which is improved in antistatic properties while retaining the soft hand, hot insulation, and water-and moisture-absorbing properties inherent in conventional ultrafine-denier false-twisted polyester yarn. The antistatic component of the yarn of the invention is excellent in heat resistance as compared with conventional polyether amide antistatic agents, so that the fabric is excellent in washing durability in a state dyed by the high-pressure method and thus useful as antistatic fabric for student's wear, uniform, dust protective wear, and so on.

Description

Antistatic cardiac polyester microfine twisted yarn and its manufacturing method and antistatic water repellent fabric comprising the antistatic cardiac polyester microfine twisted yarn AND ANTISTATIC WATER-REPELLENT FABRICS COMPRISING THE YARN}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a core-sheath polyester microfine twisted yarn having an antistatic property, a method for manufacturing the same, and an antistatic fabric including the antistatic cored sheath polyester ultrafine twisted yarn. More specifically, the present invention relates to a production method in which a polyester ultrafine combustible yarn having a deep sheath structure having excellent antistatic properties is obtained stably.

Polyester fibers are widely used, including medical applications, because of their excellent quality and stable physical properties. However, since polyesters are hydrophobic in nature, many attempts have been made to express hydrophilicity by imparting hydrophilicity to polyesters in the field where antistatic properties are required.

Examples thereof include a method of blending a polyoxyalkylene-based polyether compound with polyester (Japanese Patent Publication No. 39-5214), a substantially incompatible polyoxyalkylene-based polyether compound, and organic Method of compounding an inorganic ionic compound (Japanese Patent Publication No. 44-31828, Japanese Patent Publication No. 60-11944, Japanese Patent Application Publication No. 53-80497, Japanese Patent Application Publication No. 53-149247, Japan Publication Japanese Patent Application Laid-open No. 60-39413, Japanese Patent Laid-Open No. 3-139556, and the like.

However, in the above method, in the case of normal stretched yarn (FOY), good antistatic property is expressed, but in the case of a false twisted yarn, since fluff occurs due to deformation of the combustible yarn, there is a problem that good antistatic property is not obtained.

In addition, in recent years, the demand for texture, skin texture, appearance, etc. of knitted fabrics is increasing even more, and fabrics having a soft texture are manufactured by using a micro-fine polyester twisted yarn having a single yarn fineness of 1.6 dtex or less. In the case of a flammable processed yarn, it becomes very difficult to sufficiently suppress the generation of static electricity due to the progress of micro fineness, and so far, such as sports medical care, uniforms, dustproof clothes, or blouses or shirts that often touch the skin directly. It is not an exaggeration to say that fabrics having sufficient antistatic properties even in use are close to none.

Disclosure of Invention

It is an object of the present invention to maintain a soft texture, heat retention, absorption, hygroscopicity, etc. of the ultrafine polyester false twisted yarn, and to obtain a polyester fabric excellent in antistatic performance. It is providing the manufacturing method of a deep sheath polyester microfine false twisted yarn which can be made.

MEANS TO SOLVE THE PROBLEM The present inventors earnestly examined in order to achieve the said objective, As a result, the core component which consists of polyester which the polyester contained the substantially incompatible polyoxyalkylene type | system | group polyether compound and organic ionic compound was made. It has been found that the object of the present invention can be attained in the case of stretching and flamming after melt spinning of a core sheath polyester ultrafine composite fiber coated with a supercomponent under specific conditions.

In other words, according to the present invention,

(1) A flammable processed herbicidal composite fiber, wherein the core portion of the herbicidal composite fiber is an antistatic agent based on 100 parts by weight of the aromatic polyester.

(a) 0.2-30 weight part of polyoxyalkylene type | system | group polyethers, and (b) 0.05-10 weight part of organic ionic compounds substantially non-reactive with this polyester, Comprising: Antistatic polyester composition (A) On the other hand, the ultra-additives are formed of an aromatic polyester composition (B), and the core sheath-type composite fibers satisfy the following conditions (1) to (3) simultaneously. Bitumen processing yarn.

(1) The single yarn fineness of a false twisted yarn is 1.6 dtex or less.

(2) The crimp rate of the false twisted yarn is 3 to 30%.

(3) The ratio SA: SB of the area SA of the core portion and the area SB of the initial portion is in the range of 5:95 to 80:20.

And,

② Core part is antistatic agent with respect to 100 weight part of aromatic polyester

(a) 0.2 to 30 parts by weight of a polyoxyalkylene-based polyether, and

(b) A vinegar formed from an antistatic polyester composition (A) containing 0.05 to 10 parts by weight of an organic ionic compound that is substantially non-reactive with the polyester, while a super-part is formed of an aromatic polyester composition (B) When melt spinning the type composite fiber, the ratio of the discharge speed and the take-up speed (may be abbreviated as the take-up speed / discharge rate, and then the draft magnification) at the time of discharging in the range of 150 or more and less than 800, and then flammable The manufacturing method of the antistatic cardiac-type polyester ultrafine combustible yarn which is processed.

And,

(3) A fabric comprising a core sheath polyester twisted yarn, wherein the core sheath polyester twisted yarn is an antistatic heart sheath polyester microfine twisted yarn as described in the above (1).

1 is a schematic view of a stretch simultaneous twisting machine for producing a twisted yarn for use in the present invention, 1 is a coreless polyester undrawn yarn, 2 is a thread guide, 3, 3 'is a feed roller, 4, 4' is an interlaced nozzle , 5 is the first stage heater, 6 is the cooling plate, 7 is the temporary (three-axis friction disc unit), 8 is the first delivery roller, 9 is the second stage heater, 10 is the second delivery roller, 11 is the winding The roller 12 is polyester bitumen yarn.

2 is a front view showing one embodiment of a combustible disk unit used in the present invention, where 13 is a combustible disk, 14 is a guide disk, 15 is a rotating shaft, 16 is a timing belt, and 17 is a drive belt.

Best Mode for Carrying Out the Invention

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described in detail.

The polyester as used in the present invention is an aromatic polyester having an aromatic ring as a chain unit of a polymer, and is a polymer obtained by the reaction of a bifunctional aromatic carboxylic acid or its ester-forming derivative with a diol or its ester-forming derivative. It is done.

As the bifunctional aromatic carboxylic acid here, terephthalic acid, isophthalic acid, orthophthalic acid, 1,5-naphthalenedicarboxylic acid, 2,5-naphthalenedicarboxylic acid, 2,6-naphthalenedicarboxylic acid, 4 , 4'-biphenyldicarboxylic acid, 3,3'-biphenyldicarboxylic acid, 4,4'-biphenyletherdicarboxylic acid, 4,4'-biphenylmethanedicarboxylic acid, 4 , 4'-biphenylsulfondicarboxylic acid, 4,4'-biphenylisopropylidenedicarboxylic acid, 1,2-bis (phenoxy) ethane-4,4'-dicarboxylic acid, 2, 5-anthracenedicarboxylic acid, 2,6-anthracenedicarboxylic acid, 4,4'-p-phenylenedicarboxylic acid, 2,5-pyridinedicarboxylic acid, β-hydroxyethoxybenzoic acid, p-oxybenzoic acid etc. are mentioned, Terephthalic acid is especially preferable.

You may use together 2 or more types of these bifunctional aromatic carboxylic acids. In addition, in a small amount, together with these bifunctional aromatic carboxylic acids, bifunctional aliphatic carboxylic acids, such as adipic acid, azelaic acid, sebacic acid, and dodecane diacid, and bifunctional alicyclic carboxylic acids, such as cyclohexanedicarboxylic acid, are mentioned. Acid, 5-sodium sulfoisophthalic acid, etc. can be used together 1 type (s) or 2 or more types.

As the diol compound, aliphatic diols such as ethylene glycol, propylene glycol, butylene glycol, hexylene glycol, neopentyl glycol, 2-methyl-1,3-propanediol, diethylene glycol, trimethylene glycol, 1,4 Alicyclic diols, such as cyclohexane dimethanol, a mixture thereof, etc. are mentioned preferably. If the amount is small, polyoxyalkylene glycols having unsealed chains at both ends or one end thereof can be copolymerized with these diol compounds.

Further, polycarboxylic acids such as trimellitic acid and pyromellitic acid, polyols such as glycerin, trimethylolpropane and pentaerythritol can be used in the range where the polyester is substantially linear.

Specific preferred aromatic polyesters include polyethylene terephthalate, polybutylene terephthalate, polyhexylene terephthalate, polyethylene naphthalate, polybutylene naphthalate, polyethylene-1,2-bis (phenoxy) ethane-4,4'- In addition to dicarboxylate, copolymer polyester such as polyethylene isophthalate terephthalate, polybutylene terephthalate isophthalate, polybutylene terephthalate decane dicarboxylate and the like can be mentioned. Especially, the polyethylene terephthalate and the polybutylene terephthalate which balanced the mechanical property, moldability, etc. are especially preferable.

Such aromatic polyesters are synthesized by any method. For example, when explaining polyethylene terephthalate, esterification of terephthalic acid and ethylene glycol is carried out directly, transesterification of lower alkyl ester and terephthalic acid such as dimethyl terephthalate and ethylene glycol, or reaction of terephthalic acid and ethylene oxide. Or a first stage reaction to produce a glycol ester of terephthalic acid and / or an oligomer thereof, followed by a second stage reaction in which the product is heated under reduced pressure to a polycondensation reaction until the desired degree of polymerization is achieved. do.

The polyoxyalkylene-based polyether (a) to be blended in the composition used in the present invention may be a polyoxyalkylene glycol composed of a single oxyalkylene unit as long as it is substantially insoluble in polyester, and two or more oxyalkyls. The copolymerized polyoxyalkylene glycol which consists of ene units may be sufficient, and the polyoxyethylene polyether represented by the following general formula (I) may be sufficient.

(In the formula (I), Z is an organic compound residue having 1 to 6 active hydrogen atoms, R ¹ is an alkylene group or substituted alkylene group having 6 or more carbon atoms, R ² is a hydrogen atom, 1 to 40 carbon atoms. A monovalent hydrocarbon group, a monovalent hydroxy hydrocarbon having 2 to 40 carbon atoms or a monovalent acyl group having 2 to 40 carbon atoms, k is an integer of 1 to 6, n is an integer satisfying n ≥ 70 / k , m represents an integer of 1 or more).

Specific examples of such polyoxyalkylene-based polyethers include polyoxyethylene glycol having a molecular weight of 4000 or more, polyoxypropylene glycol having a molecular weight of 1000 or more, polyoxytetramethylene glycol, ethylene oxide having a molecular weight of 2000 or more, a propylene oxide copolymer, or a molecular weight. Trimethylolpropane ethylene oxide adducts of 4000 or more, nonylphenol ethylene oxide adducts of molecular weight 3000 or more, and compounds in which substituted ethylene oxides of 6 or more carbon atoms are added to these terminal OH groups, and among them, polys having a molecular weight of 10000 to 100000. Preference is given to compounds in which oxyethylene glycol and an alkyl group substituted ethylene oxide having 8 to 40 carbon atoms are added to both terminals of polyoxyethylene glycol having a molecular weight of 5000 to 16000.

The compounding quantity of such polyoxyalkylene system polyether compound is the range of 0.2-30 weight part with respect to 100 weight part of said aromatic polyesters. When less than 0.2 part by weight, the hydrophilicity is insufficient and sufficient antistatic property cannot be exhibited. On the other hand, even if it is more than 30 parts by weight, the effect of improving the antistatic property is not confirmed. On the other hand, since the polyether is likely to bleed out and the polyether is easily bleed out. It will fall and molding stability will also worsen.

The polyester composition of this invention mix | blends an organic ionic compound especially in order to improve antistatic property. As an organic ionic compound, the sulfonic acid metal salt and sulfonic acid quaternary phosphonium salt represented by the following general formula (II) and (III) are mentioned as a preferable thing, for example.

RSO ₃ M ..... (II)

(In the formula (II), R represents an alkyl group having 3 to 30 carbon atoms or an aryl group having 7 to 40 carbon atoms, and M represents an alkali metal or an alkaline earth metal.)

RSO ₃ PR ¹ R ² R ³ R ⁴ ..... (III)

(In Formula (III), R is an alkyl group having 3 to 30 carbon atoms or an aryl group having 7 to 40 carbon atoms. R ¹ , R ² , R ³ and R ⁴ are alkyl groups or aryl groups. Lower alkyl groups, phenyl groups or benzyl groups are preferred).

In said Formula (II), when R is an alkyl group, an alkyl group may be linear or may have a branched side chain. M is alkali metal, such as Na, K, Li, or alkaline-earth metal, such as Mg, Ca, Especially, Li, Na, K is preferable. These sulfonic acid metal salts may be used alone or in combination of two or more thereof.

Preferred embodiments include sodium stearyl sulfonate, sodium octyl sulfonate, sodium dodecyl sulfonate, alkyl sulfonate mixtures having an average number of carbon atoms of 14, sodium dodecylbenzenesulfonate mixture, sodium dodecylbenzenesulfonate (hard, soft) , Lithium dodecylbenzene sulfonate (hard type, soft type), magnesium dodecylbenzene sulfonate (hard type, soft type), and the like.

In addition, the sulfonic acid quaternary phosphonium salt in Formula (III) may be used individually by 1 type, or may mix and use 2 or more types. Preferred embodiments include alkylsulfonic acid tetrabutylphosphonium having an average number of carbon atoms of 14, alkylsulfonic acid tetraphenylphosphonium having an average number of carbon atoms of 14, alkylsulfonic acid butyltriphenylphosphonium having an average number of carbon atoms of 14 , Dodecylbenzenesulfonic acid tetrabutylphosphonium (hard type, soft type), dodecylbenzenesulfonic acid tetraphenylphosphonium (hard type, soft type), dodecylbenzenesulfonic acid benzyl triphenylphosphonium (hard type, soft type), etc. are mentioned. have.

One type of such organic ionic compound may be used, or two or more types thereof may be used in combination, and the amount of the compound needs to be in the range of 0.05 to 10 parts by weight based on 100 parts by weight of the aromatic polyester. When the amount of the organic ionic compound is less than 0.05 part by weight, the effect of improving the antistatic property is small. When the amount of the organic ionic compound is more than 10 parts by weight, the mechanical properties of the composition are impaired, and the ionic compound is also easily bleed out. The luster bite of the chip is lowered, and the molding stability is also deteriorated.

Moreover, you may mix | blend a well-known gloss remover, for example titanium dioxide, with polyester B in the range which does not impair the objective of this invention. However, if the gloss removal agent exceeds 10 wt%, the radioactivity of the undrawn yarn which becomes the parent yarn of the present invention deteriorates, so the range is preferably 0.01 to 10 wt%.

In addition, the ultrafine combustible working yarn of the present invention needs to have a single yarn fineness of 1.6 dtex or less and a crimping rate of 3 to 30%. By setting it as this range, a woven fabric having excellent soft texture is obtained. When the crimp rate is less than 3%, sufficient swelling is not obtained when the knitted fabric is used. On the other hand, when it exceeds 30%, the antistatic performance tends to be lowered, which is not preferable.

Moreover, it is necessary to make ratio SA: SB of the area SA of the core part, and the area SB of the beginning part into the range of 5: 95-80: 20. When the area ratio is smaller than 5:95, the expression of the antistatic performance by the polyester A becomes insufficient. When the area ratio is larger than 80:20, when the alkali reduction of 10% or more is performed, the antistatic polyester of the core is eluted. It is not suitable for applications requiring strength, such as sports medicine, because the antistatic performance is lowered, or the strength of the false twisted yarn is lowered to 3.0 cN / dtex or less, and the strength of the fabric is insufficient. It is not preferable because it becomes limited.

The polyester microfine twisted yarn of the present invention described above describes the ratio (discharge rate / discharge rate, hereinafter referred to as draft) of the discharge rate and the take-up rate at the time of melt spinning when the unstretched yarn that becomes the parent material is melted and spun. As described above, stable antistatic performance is obtained by false processing the undrawn yarn taken in the range of less than 800. When the draft is less than 150, expression of the antistatic performance by polyester A becomes insufficient, and when the draft is 800 or more, the antistatic performance is expressed, but the radioactivity decreases, which is not preferable.

To set the draft in the above range, the diameter of the discharge hole and the spinning speed may be appropriately set, but the discharge hole diameter is melted in the range of Φ 0.1 to 0.3 mm and the spinning speed of 2000 to 4500 m / min, especially 2500 to 3500 m / min. When spinning, since it is obtained easily and efficiently, it is preferable.

It is preferable that the birefringence of the unstretched multifilament at that time is in the range of 0.02 to 0.05. If the birefringence is less than 0.02, it is not preferable because the tension at the time of false work is low, and it is easy to cause surging, and because of the thread shaking, heat set nonuniformity occurs, and the dyeing nonuniformity is poor, and it becomes weak for processing magnification up. . On the other hand, when the birefringence exceeds 0.05, yarn fluff tends to occur, resulting in poor process, which is undesirable.

It does not need to specifically limit about the false twist method of the unstretched yarn, For example, the method described below is used.

First, although the air entanglement process may be performed by a process separate from extending | stretching false twist processing, as shown in FIG. 1, it is preferable to provide an interlacing nozzle to an extending | stretching twist processing apparatus, and to perform just before extending | stretching false processing. This suppresses the occurrence of fluff and has a desirable effect on handleability. Furthermore, by performing air entanglement on the thread strands after heat-set combustion, the antistatic properties are perfectly equalized and the antistatic properties are made uniform. It also expresses a sense of quality.

Next, the non-drawn yarn subjected to the entanglement treatment is, for example, hooked to a stretchable twisting machine equipped with a two-stage heater shown in FIG. 1 to be a polyester twisted yarn having a crimp.

In addition, in FIG. 1, the process of air-interlacing the polyester unstretched yarn 1 mentioned above by the interlace nozzle 4 and 4 'provided between two pairs of feed rollers 3 and 3' is described. The unstretched yarn which has been entangled here is stretched between the feed roller 3 'and the first delivery roller 8, and is combusted by the friction with the rotating combustible disk 7. In the meantime, it heat-processes in the 1st stage heater 5, it cools in the cooling plate 6, and passes through the combustible disk 7, and decomposes. In addition, the traveling thread strand is reheated as necessary in the second stage heater 9 provided between the first delivery roller 8 and the second delivery roller 10, and furthermore, air strands are applied to the thread strands after hot set burning. 4 '), it winds up as the cheese-like package 12 by the winding roller 11, and the polyester twisted-processed sand is manufactured.

In consideration of the stretch flammability at high speed, the first stage heater 5 and the second stage heater 9 are preferably non-contact. Although a 2nd stage heater is not used in many cases, you may use as needed, such as a texture.

In the present invention, the temporary disk (7) is a three-axis friction disk type as shown in Fig. 2, and the lowest disk material located at the sea edge is ceramic, and the contact length between the traveling thread strand and the disk is 2.5 to 0.5. It is preferable to set it to mm, and furthermore, the disk has a diameter of 90-98% of the diameter of the disk immediately upstream.

That is, the temporary research 7 illustrated in FIG. 2 is a three-axis friction disk type in which two combustible disks 13 are mounted on each of three rotation shafts 15, and each rotation shaft 15 is a drive belt 17. Each of the combustible disks 13 is rotated at a predetermined speed by the timing belt 16 driven by the? In the method of the present invention, the lowermost disk (the lower disk mounted on the left rotating shaft in the example of FIG. 2) positioned at least in the seabed portion of the combustible disk 13 is made of ceramic, and the diameter of the disk is immediately upstream. 2 to 90% of the diameter of the disk (the lower disk attached to the central rotating shaft in the example of FIG. 2) is used. And the contact length of this ceramic disk and a traveling chamber strand shall be 2.5-0.5 mm.

At this time, the lowest disk material is preferable from the viewpoint of the wear resistance of the ceramic. According to the researches of the present inventors, in the composite twist processing according to the present invention, when the contact length between the traveling seal strand and the disk is 2.5 to 0.5 mm, when the combustion is terminated and the strand strand in the crimped state enters the last seam edge part, Can reduce the contact area as little as possible and reduce the resistance. As a result, the fluff is considerably reduced, resulting in an increase in strength, and the diameter of the disk in the range of 90 to 98% of the diameter of the disk immediately above. The resistance value when moving the apostle to the next step (specifically, heat set) becomes small, and it turned out that it is effective in moving smoothly. Among them, it was confirmed that the contact length between the strand and the disk of 2.5 to 0.5 mm was particularly effective in significantly reducing the processing fluff and consequently improving the strength.

It is preferable that the flammable processing temperature in this invention sets it as glass transition temperature (henceforth TG) TG + 100 degreeC-TG + 200 degreeC, specifically 170-300 degreeC. When this temperature is less than 170 degreeC, crimping performance is low, and a texture is hard, and when it exceeds 300 degreeC, since the flatness of a processed yarn progresses extremely and processing fluff arises, it is unpreferable. When using the apparatus provided with a non-contact heater as a combustible processing machine, it is preferable to heat-process by making the set temperature of a 1st stage non-contact heater into 170-300 degreeC. In addition, the suitable heater temperature here is a commercially available combustible processing machine (Teijin Seiki 216 HTS-15V), and is 1.0-1.5 m in length of a non-contact type, and 800 m as a firing speed. It is assumed that the specification is per minute, and the like. Therefore, when using a special heater or processing at an extremely high speed, the set temperature must be appropriately adjusted.

The first heater in the flammable region is for improving the stretchability and flammability (twistability) of the unstretched yarn strand, and when this temperature is a non-contact heater, the twistability is lowered at a temperature below 170 ° C. The crimp to be made cannot be given, and the texture of the knitted fabric becomes like paper. Moreover, since the generation | occurrence | production of single yarn and fluff at the time of extending | stretching and twisting process increases, crimp nonuniformity and dyeing nonuniformity at the time of dyeing become easy to generate | occur | produce, it is not preferable. On the other hand, when the temperature of a 1st heater exceeds 300 degreeC, single yarn break is easy to generate | occur | produce at the time of extending | stretching and twisting, and especially, single yarn break is likely to generate | occur | produce in the unstretched strand strand (B ') of a high elongation side, and polyester obtained Compound twisted yarns are not preferred because they become more lint-free. In addition, although the 1st stage heater may be divided | segmented into the front half part and the latter half part depending on the type of an extending | stretching ore processing machine, what is necessary is just to set the first half part and the latter half part of a 1st stage heater to the same temperature.

The heat treatment time of the yarn strand in the first stage heater may be appropriately set according to the type of the heater, its length, its temperature, and the like. If the heat treatment time is too short, the crimping rate is likely to be insufficient, and is caused by the tension variation. Uneven dyeing in stretched twisted yarn, twisted yarn, and knitted fabric tends to occur. On the other hand, when it is too long, the crimp ratio tends to be too large. For this reason, when heat-processing with a non-contact heater, the range of 0.04 to 0.12 second normally, especially the range of 0.06 to 0.10 second is suitable.

Furthermore, about the draw ratio at the time of a process, 1.4-2.4 is an optimal area | region, and when this area | region is out of this range, the heat set nonuniformity by surging, generation | occurrence | production, and thread shaking on the low magnification side will progress, and the flatness of a processed yarn will progress in the high magnification side, and a process fluff may arise. This is undesirable.

When the twist number is, the composite false twist processing's fineness as Y (dtex), [(15000 ~ 35000) / Y 1/2] time / m, more preferably [(20000 ~ 30000) / Y 1/2] Set to the range of times / m. When the number of combustibles is less than 15000 / Y ^1/2 times / m, it is difficult to give a fine and firm crimp and the fabric obtained becomes like paper, and the texture becomes hard. When the number of combustibles exceeds 35000 / Y ^1/2 times / m, the occurrence of single yarn and fluff increases.

The ultrafine polyester false twisted yarn of the present invention thus obtained also maintains the soft texture, thermal insulation, water absorption, hygroscopicity and the like of the conventional ultrafine polyester false twisted yarn, thereby obtaining a polyester fabric having excellent antistatic performance.

Hereinafter, an Example and a comparative example demonstrate this invention further more concretely. In addition, each measured value shown in the Example is the value measured by the following method. In addition, what is simply "part" in an example means a weight part unless there is particular notice.

(1) intrinsic viscosity

It dissolved in ortho-chlorphenol and measured at 35 degreeC using the Uberode viscosity tube.

(2) traveling angle

Photographs were taken of the yarn strands traveling on the combustible discs, and the running angle θ of the yarn strands on each combustible disc disk was measured on the photographs, and the average value of these measured values was taken as the traveling angle.

(3) crimp rate

A polyester false twisted yarn sample was subjected to a tension of 0.044 cN / dtex and wound up to a failed frame to produce a failure of about 3300 dtex. Two loads, 0.0177 cN / dtex and 0.177 cN / dtex, were loaded at one end of the failure, and the length S0 (cm) after elapse of 1 minute was measured. Subsequently, it processed for 20 minutes in 100 degreeC non-aqueous water in the state which removed the load of 0.177 cN / dtex. After the non-aqueous treatment, the load of 0.0177cN / dtex was removed, and naturally dried in a free state for 24 hours, and again the load of 0.0177cN / dtex and 0.177cN / dtex, and the length after 1 minute was measured to measure S1 (cm). It was set as. Subsequently, the load of 0.177 cN / dtex was removed, the length after 1 minute elapsed was measured, and it was set as S2, the crimp rate was computed by the following calculation formula, and it represented by the average value of 10 measured values.

Crimp rate (%) = [(S1-S2) / S0] × 100

(4) texture

Using the false twisted yarn of this invention as a fabric, it ranked according to the level 1-3 by the sensory inspection by an expert as follows.

(Soft feeling)

Level 1: Soft and soft texture

Level 2: A little lack of softness but repulsive feeling

Level 3: Scruffy or hard texture.

(5) fluff count

Using Toray Co., Ltd. DT-104 type fluff counter apparatus, the sample of polyester twisted yarn was continuously measured for 20 minutes at the speed of 500 m / min, and the number of generated fluffs was measured, and it is represented by the number per 10,000 m of sample length. It was.

(6) antistatic test method

(Friction large voltage measurement method)

While rotating the test piece, rub with a friction cloth to measure the generated large voltage. L1094 Chargeability Test Method Follows Method B (friction large voltage measurement). Regarding the antistatic effect, the antistatic effect appears when the frictional electrification voltage is about 2000 V or less (preferably 1500 V or less).

Example 1

100 parts of dimethyl terephthalate, 60 parts of ethylene glycol, 0.06 parts of calcium acetate monohydrate (0.066 mol% relative to dimethyl terephthalate) and 0.013 parts of cobalt acetate tetrahydrate (0.01 mol% relative to dimethyl terephthalate) as a colorant It injected | poured into the transesterification can, this reaction material was heated up from 140 degreeC to 220 degreeC over 4 hours in nitrogen gas atmosphere, and the methanol produced | generated in the reaction can was transesterified, distilling out out of the system.

After the completion of the transesterification reaction, 0.058 parts of trimethyl phosphate (0.080 mol% relative to dimethyl terephthalate) was added to the reaction mixture as a stabilizer, and 0.024 parts of dimethylpolysiloxane as an antifoaming agent. Next, after 10 minutes, 0.041 parts of antimony trioxide (0.027 mol% based on dimethyl terephthalate) was added to the reaction mixture, and the reaction mixture was heated to 240 ° C while distilling off excess ethylene glycol, and then the reaction mixture was subjected to polymerization reaction can. Moved to. Subsequently, while depressurizing from 760 mmHg to 1 mmHg over 1 hour and 40 minutes, and heating up from 240 degreeC to 280 degreeC and carrying out polycondensation reaction, 4 parts of water-insoluble polyoxyethylene polyether represented by following formula and dode 2 parts of sodium silbenzenesulfonic acid were added under vacuum, and polycondensation reaction was carried out for 240 minutes again, and then Irganox 1010 by Chiba Kaigi Co., Ltd. was added under 0.4 part vacuum as an antioxidant, and polycondensation reaction was further performed for 30 minutes after that. It was. An antistatic agent was added in the polymerization reaction step, and the obtained polymer formed chips in a conventional manner.

(However, j is an integer of 18 to 28, and an average of 21, P is an average value, and 100 is an average value of 5. Here, the average value is an oxyethylene in a copolymerized polyoxyethylene-based polyether composed of two or more oxyethylene units). Mean value of the number of units).

The intrinsic viscosity of the obtained polymer was 0.657 and a softening point of 258 degreeC.

After the obtained chip and the conventional polyethylene terephthalate chip having an intrinsic viscosity of 0.65 containing 0.4 wt% of titanium oxide fine particles were dried by a conventional method, the chip was melted by a spinneret in a conventional manner, respectively, and spun. Each block was introduced into a spin pack for composite fibers. From the spinneret formed by drilling 72 cardiac complex circular discharge holes attached to the spin pack, it is cooled and solidified by a cooling wind from a conventional crossflow type spinneret, which is gathered and bundled into one thread strand while giving a spinning emulsion. , The core was drawn at a speed of 3000 m / min (draft magnification: 200) to obtain a polyester core sheath-type composite non-drawn yarn having an area ratio of seam / second of 140 dtex / 72 filaments of 70:30.

The polyester unstretched yarn was added to Teijin Seiki 216, HTS-15V, 60 nL while passing through an interlace nozzle having a pressure injection hole with a diameter of 1.8 mm at the front end and the rear end as shown in Fig. 1 (4, 4 '). Air entanglement was performed so that the degree of entanglement was 50 / m at a flow rate of / min, and a urethane disk having a diameter of 60 mm and a thickness of 9 mm was set under conditions of a draw ratio of 1.60 and a first heater (non-contact type) temperature of 250 ° C. As a combustible disk, stretching is performed so that the number of combustible water x (twisted yarn fineness (dtex)) ^1/2 is around 26000 at a driving angle of 43 degrees. Polyester twisted processed yarn having an average sheath ratio of 70:30 having an average single yarn fineness of 1.17 dtex) was obtained.

The cylindrical knitted paper was manufactured using these polyester twisted processing yarns, and the antistatic property was measured. The triboelectric electrification voltage of the obtained polyester twisted yarn was 1200V. In addition, these polyester false twisted yarns were fabricated by a conventional method, and the quality of the fabrics was evaluated by sensory evaluation. The texture was very deep, high-quality, and soft. The results are shown in Table 1.

Comparative Example 1

Acrylonitrile is made to react with polyethyleneglycol in presence of an alkali catalyst, and further hydrogenation reaction synthesize | combines polyethyleneglycol diamine (number average molecular weight 4000) whose 97% or more of both terminals are an amino group, and this and adipic acid 45% of aqueous solution of polyethyleneglycol diammonium adipate was obtained by carrying out the salt reaction with the normal method.

200 kg of the 45% polyethylene glycol diammonium adipate aqueous solution, 120 kg of the 85% caprolactam aqueous solution and 16 kg of the 40% hexamethylene diammonium isophthalate aqueous solution were added to a concentrated can of 2 m 3, and the internal temperature was 110 ° C. at atmospheric pressure. It heated at about 2 hours and concentrated to 80% concentration until it became. Subsequently, the said concentrated liquid was transferred to the polymerization can of capacity 800L, and heating was started, flowing nitrogen in 2.5L / min in a polymerization can.

5.2 kg (2.5 wt%) of dodecylbenzenesulfonic acid soda and 1,5,5-trimethyl-2,4,6-tri (3,5-di-tert-butyl-4- when the internal temperature reached 120 ° C 5.2 kg (2.5 wt%) of hydroxybenzene) benzene (TTB) were added, stirring was started, and heating was completed for 18 hours until the internal temperature became 245 ° C to complete the polymerization. After completion of the polymerization, pellets were prepared by a conventional method to obtain pellets composed of the block polyetheramide composition.

The pellets made of the above-mentioned block polyetheramide composition were blended with polyethylene terephthalate chips not containing ordinary titanium oxide having an intrinsic viscosity of 0.65 so as to be 1.4% by weight, and the same procedure as in Example 1 was conducted. Thus, a polyester false twisted yarn having a heart rate of 70:30 of 84dtex / 72 filaments (average single yarn fineness of 1.17dtex) was obtained. The fabric made of this fiber exhibited the same soft and excellent texture as in Example 1, but the frictional electrification voltage was very bad at 3400V. The results are summarized in Table 1.

Examples 2 to 3

Except for changing the discharge amount of the polymer, the same procedure as in Example 1 was carried out, and the eccentric composite of 56 dtex / 72 filaments (average single yarn fineness 0.78 dtex) and 111 dtex / 72 filaments (average single yarn fineness 1.54 dtex) was 70:30. Polyester false twisted yarn was obtained. The fabric made from these yarns was excellent in both frictional withstand voltage and texture. The results are summarized in Table 1 and described.

Comparative Examples 2 to 3

Except for changing the discharge amount of the polymer, it was carried out in the same manner as in Comparative Example 1, the eccentric composite of 56 dtex / 72 filament (average single yarn fineness 0.78dtex) and 111 dtex / 72 filament (average single yarn fineness 1.54dtex) Polyester false twisted yarn was obtained. The fabrics made of these yarns were excellent in texture as in Example 1, but were not suitable for practical use because of high frictional electrification voltage. The results are summarized in Table 1 and described.

Comparative Example 4

Except increasing the polymer discharge amount, it carried out similarly to Example 1, and obtained the poncho composite composite twisted-fiber yarn which has a poncho ratio of 70:30 of 133 dtex / 72 filaments (average single yarn fineness of 1.85 dtex). The fabric made of these yarns had excellent frictional electrification voltage as in Example 1, but had a hard texture and were not suitable for practical use. The results are summarized in Table 1 and described.

Comparative Example 5

Except for changing the mold to 36 holes, it was carried out in the same manner as in Example 1 to obtain a poncho composite polyester twisted yarn having a poncho ratio of 70:30 of 84 dtex / 36 filament (average single yarn fineness of 2.33 dtex). The fabric made of these yarns had excellent frictional electrification voltage as in Example 1, but had a hard texture and were not suitable for practical use. The results are summarized in Table 1 and described.

Comparative Example 6

Except increasing the polymer discharge amount, it carried out similarly to the comparative example 1, and obtained the poncho composite composite false twisted yarn of the poncho ratio of 70:30 of 133 dtex / 72 filament (average single yarn fineness of 1.85 dtex). The fabric made from these yarns had improved frictional electrification voltage as compared with Comparative Example 1, but was still not sufficient, and the texture was also hard and unsuitable for practical use. The results are summarized in Table 1.

Comparative Example 7

Except for changing the mold to 36 holes, it was carried out in the same manner as in Comparative Example 1 to obtain a deep sheath-type composite polyester false twisted yarn having a heart rate ratio of 70:30 of 84 dtex / 36 filament (average single yarn fineness of 2.33 dtex). The fabrics made of these yarns had improved frictional electrification voltage compared to Comparative Example 1 but were still not sufficient, and had a hard texture and were not suitable for practical use. The results are summarized in Table 1 and described.

Draft magnification (times) Short fiber fineness (dtex) Crimp rate (%) Number of fluff (dogs per thousand meters) Friction band voltage (V) Texture (Level) Example 1 200 1.17 15 20 1200 One Example 2 300 0.78 18 30 1200 One Example 3 180 1.54 20 15 1100 One Comparative Example 1 200 1.17 20 15 3400 One Comparative Example 2 300 0.78 15 30 4000 One Comparative Example 3 180 1.54 15 20 2700 One Comparative Example 4 120 1.85 20 13 1000 3 Comparative Example 5 185 2.33 25 10 1000 3 Comparative Example 6 120 1.85 18 10 2000 3 Comparative Example 7 185 2.33 25 10 2000 3 * PEG (molecular weight 20000) ** sodium dodecylbenzenesulfonate

Claims (7)

A core-sheath composite fiber that has been combusted, wherein the core portion of the core sheath composite fiber is an antistatic agent based on 100 parts by weight of the aromatic polyester. (a) 0.2-30 weight part of polyoxyalkylene type | system | group polyethers, and (b) 0.05-10 weight part of organic ionic compounds substantially non-reactive with this polyester, Comprising: Antistatic polyester composition (A) On the other hand, the ultra-additives are formed of an aromatic polyester composition (B), and the core sheath-type composite fibers satisfy the following conditions (1) to (3) simultaneously. Bitumen processing yarn. (1) The single yarn fineness of a false twisted yarn is 1.6 dtex or less. (2) The crimp rate of the false twisted yarn is 3 to 30%. (3) The ratio SA: SB of the area SA of the core portion and the area SB of the initial portion is in the range of 5:95 to 80:20. The method of claim 1, The antistatic cardioid polyester microfine combustible yarn which is an polyester composition in which an aromatic polyester composition (B) contains 0.01-10 weight% of gloss removers with respect to 100 weight part of aromatic polyesters. The method of claim 1, An antistatic cardiac-type polyester ultrafine combustible yarn, wherein the gloss remover is titanium dioxide. Core part with respect to 100 weight part of aromatic polyester, as an antistatic agent (a) 0.2 to 30 parts by weight of a polyoxyalkylene-based polyether, and (b) A vinegar formed from an antistatic polyester composition (A) containing 0.05 to 10 parts by weight of an organic ionic compound that is substantially non-reactive with the polyester, while a super-part is formed of an aromatic polyester composition (B) When melt spinning the type composite fiber, the ratio of the discharge speed and the take-up speed (may be abbreviated as the take-up speed / discharge rate, and then the draft magnification) at the time of discharging in the range of 150 or more and less than 800, and then flammable The manufacturing method of the antistatic cardiac-type polyester ultrafine combustible yarn which is processed. The method of claim 4, wherein The manufacturing method of the antistatic cardiac-type polyester ultrafine combustible yarn which is an polyester composition in which an aromatic polyester composition (B) contains 0.01-10 weight% of gloss removers with respect to 100 weight part of aromatic polyesters. The method of claim 4, wherein The manufacturing method of the antistatic cardiac-type polyester ultrafine combustible yarn of which a gloss remover is titanium dioxide. A water-repellent fabric in which a water-repellent fabric is subjected to a water-repellent fabric on a fabric comprising a core sheath polyester twisted yarn, wherein the anti-foamed polyester sheathed yarn is an antistatic electrostatic core sheath-type polyester micro-twisted yarn according to any one of claims 1 to 3. Antistatic water-repellent fabric, characterized in that.

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