JPH09228190A - Polyester pile fabric - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a polyester pile fabric excellent in wearing amenities without sweaty unpleasantness and itchy irritation caused by static electricity by using polyester fibers having both of moisture-absorbing and antistatic properties as pile yarns and/or ground yarns. SOLUTION: A polyester copolymer prepared by copolymerizing a polyether- ester-amide block copolymer or dimethyl terephthalate/ethylene glycol/a polar group-bearing compound, for example, 5-sodiosulfo-isophthalic acid/trimethyl trimellitate is arranged in the fiber core and usual polyester is arranged in the sheath to prepare a sheath-core type conjugated fiber and the fiber is drawn to form a polyester fiber with moisture absorption and release parameter ΔMR of >=1%, frictionally charging voltage of <=3KV, filament fineness of 0.5-7de. This polyester conjugated fiber is used as pile yarn and/or ground yarn to produce a pile cloth with a pile density of 700-2,500/in<2> .

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polyester pile fabric used for vehicle interiors, home interiors, office interiors, exhibition hall interiors, and the like, and more specifically, it has hygroscopicity and antistatic properties. However, the present invention relates to a polyester pile fabric that improves the comfort of use in the above-mentioned applications.

[0002]

2. Description of the Related Art For example, fabrics for vehicle interiors include woven fabrics,
Various fabrics such as knits, pile woven knits, leather and leather-like fabrics are used. Among these, the most commonly used ones are pile woven fabrics called moquette, tricot raised fabrics and double russel knitted fabrics. is there. Fiber materials for these cloths include natural fibers, synthetic fibers, blended fibers of natural fibers and synthetic fibers, composite / ply twist, and interwoven knitting, but especially for car seats, polyester pile cloth is the main material. ing.

With regard to polyester pile fabric, while utilizing the excellent functionality of polyester fiber, it is possible to improve hair fall, white blur effect, silk-like improvement, soft texture, nap feeling, and transparent feeling. Although various proposals such as improvement have been made, the improvement for improving the stuffiness during use caused by the fact that the polyester fiber is essentially hydrophobic and improving the comfort of use are still complete. It is the actual situation that is not obtained.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a polyester pile fabric which provides excellent comfort by using polyester fibers having hygroscopicity and antistatic property.

[0005]

A polyester pile fabric according to the present invention for solving the above-mentioned problems is a pile fabric containing a polyester fiber having hygroscopicity and antistatic property,
The pile fabric has a moisture absorption / release parameter ΔMR of 1% or more.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, a polyester fiber having hygroscopicity and antistatic property is used as a main constituent fiber of a pile fabric. Having hygroscopicity means that the cloth has a moisture absorption / release parameter ΔMR of 1% or more, preferably 1.2% or more. Of course, the polyester fiber itself, which is a constituent fiber, also has a moisture absorption / release parameter
Those having an MR of 1% or more, preferably 1.2% or more are used. In addition, the upper limit of the moisture absorption / release parameter ΔMR is preferably 30% from the viewpoint of the spinnability of the above-mentioned polyester fiber.

If the moisture absorption / desorption parameter ΔMR of the fabric is less than 1%, uncomfortable feeling such as stuffiness will be felt after long-term use, and good use comfort cannot be obtained. Here, the moisture absorption / release parameter ΔMR is 3
20 ° C x 65% from the moisture absorption MR ₂ at 0 ° C x 90% RH
The difference obtained by subtracting the moisture absorption MR ₁ in RH (ΔMR (%) = MR
₂ -MR ₁ ).

This moisture absorption / release parameter ΔMR is a parameter for absorbing human sweat and releasing it to the outside of the seat to provide comfort when it is used in an automobile, which is the main application of moquette. The larger the moisture absorption and desorption parameter ΔMR, the higher the moisture absorption and desorption ability, and the more the seating for a long time, the more effective the moisture absorption and desorption becomes, and the comfort can be prevented from being impaired.

Further, the pile fabric of the present invention is composed of the above-mentioned polyester fibers, so that it has an antistatic property with a frictional electrification voltage of 3 kv or less. More preferably, the frictional electrification voltage is set to 1 kv or less, substantially 0 kv. Generally, pile fabrics made of polyester fibers are
When you sit down or leave your seat, static electricity may be generated which may cause discomfort such as a tingling sensation, or clothing may get caught in the clothes.
By setting kv or less, these discomforts can be eliminated.

In the present invention, the polyester fiber used for increasing the moisture absorption / release parameter ΔMR of the polyester pile fabric to 1% or more is particularly preferable as long as it has a moisture absorption performance and an antistatic performance to enable this. Not limited. However, particularly preferably, a fiber containing the polyether ester amide (E) as one component of a composite fiber or a blend fiber, and a polyester obtained by copolymerizing the hydrophilic compound (A), in which a polar group-containing compound ( A fiber containing B) and / or a copolyester (D) containing a cross-linking agent (C) as one component of a composite fiber or a blended fiber can be mentioned.

First, the former polyester fiber containing the polyether ester amide (E) will be described. As the polyether ester amide (E) used here, a block copolymer having an ether bond ester bond and an amide bond in the same molecular chain can be used. More specifically, one or two selected from lactam, aminocarboxylic acid, salts of diamine and dicarboxylic acid.
A block copolymer polymer obtained by polycondensation of one or more polyamide-forming components (a) and a polyetherester-forming component (b) composed of dicarboxylic acid and poly (alkylene oxide) glycol can be used.

Examples of the polyamide-forming component (a) of the polyether ester amide (E) include lactams such as caprolactam, enantolactam, dodecanolactam and undecanolactam, aminocaproic acid, 11-aminoundecanoic acid and 12-amino. Ω-aminocarboxylic acid such as dodecanoic acid, nylon 66, nylon 610, nylon 6
There are diamine-dicarboxylic nylon salts that are precursors of 12 or the like, and these can be used alone or in combination of two or more. A preferred polyamide-forming component is ε
-Caprolactam, a nylon 66 salt.

On the other hand, polyether ester amide (E)
The polyether ester component (b) constituting the soft segment of (2) is composed of a dicarboxylic acid having 4 to 20 carbon atoms and poly (alkylene oxide) glycol. Examples of the dicarboxylic acid having 4 to 20 carbon atoms include aliphatic dicarboxylic acids such as succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, sebacic acid and dodecadiic acid, terephthalic acid, isophthalic acid and 2,6-naphthalenedicarboxylic acid. And an alicyclic dicarboxylic acid such as 1,4-cyclohexanedicarboxylic acid.
Species or a mixture of two or more can be used. Preferred dicarboxylic acids are adipic acid, sebacic acid, dodecadic acid, terephthalic acid, isophthalic acid.

The poly (alkylene oxide) glycol may be polyethylene glycol, poly (1,2).
-And 1,3-propylene oxide) glycol, poly (tetramethylene oxide) glycol, poly (hexamethylene oxide) glycol, random or block copolymerization of ethylene oxide and propylene oxide or tetrahydrofuran, and the like, with polyethylene glycol being particularly preferred. . The poly (alkylene oxide) glycol has a number average molecular weight of 300 to 10,000,
Preferably it is in the range of 500-4000.

The polyetheresteramide block copolymer used in the present invention is obtained by polycondensing the above-mentioned polyamide-forming component (a) and polyetherester-forming component (b). As an industrially preferable method, there is a method in which (a) and (b) are heated and polycondensed under reduced pressure. At that time, in order to obtain a polymer having a high degree of polymerization and little coloring, for example, antimony oxide is used. It is preferable to add titanic acid ester or the like as a polycondensation catalyst, and phosphoric acid or phosphoric acid ester or the like as a color preventing agent.
The weight ratio of (a) and (b) in the polyether ester amide is 99/1 to 5/90, preferably 80/20 to 1
It can be used effectively in the range of 0/90.

The fiber-forming polymer to be used in combination with the polyether ester amide (E) to form a composite fiber or a blended fiber is not particularly limited, and examples thereof include terephthalic acid, 2,6-naphthalenedicarboxylic acid, and those thereof. Polyethylene terephthalate, polybutylene terephthalate, or polyethylene 2, which contains an ester as a main dicarboxylic acid component and ethylene glycol or tetramethylene glycol as a main glycol component
Linear polyesters such as 6-naphthalate may be mentioned. Of these, polyethylene terephthalate (usually polyester) is particularly preferable.

Polyester fibers containing the above polyether ester amide (E) include sodium polyacrylate, poly N vinylpyrrolidone, polyacrylic acid, and copolymers thereof, polymethacrylic acid and copolymers thereof. , Polyvinyl alcohol and its copolymers, polyacrylamide and its copolymers, moisture-absorbing / water-absorbing substances such as cross-linked polyethylene oxide-based polymers and general-purpose thermoplastic resins such as polyolefins and polyamides are contained to the extent that the objects of the present invention are not impaired. May be. In addition to pigments such as titanium oxide and carbon black, conventionally known antioxidants, anti-coloring agents, light stabilizers, antistatic agents and the like may be added.

Next, the polyester fiber containing the above-mentioned copolymerized polyester (D) will be described.
As the acid component of the copolyester (D) used here, terephthalic acid, isophthalic acid, naphthalene-2,
Examples thereof include aromatic dicarboxylic acids such as 6-dicarboxylic acid and aliphatic dicarboxylic acids such as adipic acid and sebacic acid. Especially preferred is terephthalic acid. Examples of the glycol component include ethylene glycol, propylene glycol, tetramethylene glycol, diethylene glycol, neopentyl glycol and the like. Particularly preferred is ethylene glycol.

The hydrophilic compound (A) is not particularly limited as long as it is a compound containing at least one ester-forming group, but typical compounds are polyoxyalkylene compounds, polyoxazolines, polyacrylamide and its derivatives. , Polysulfoethyl methacrylate, poly (meth) acrylic acid and salts thereof, polyhydroxyethyl (meth) acrylate, polyvinyl alcohol, and polyvinylpyrrolidone. Among them, polyoxyalkylene compounds are preferable. Examples of polyoxyalkylene compounds include polyoxyethylene compounds, polyoxypropylene compounds, and polyoxytetramethylene compounds. Among them, polyoxyethylene compounds are preferable, and polyethylene glycol is particularly preferable.
Among polyethylene glycols, polyethylene glycol containing a crystallization inhibitor component is preferable.

Here, the crystallization inhibitor component means an organic residue existing in the molecular chain or at the terminal and disturbing the symmetry of the repeating unit of polyethylene glycol. Crystallization suppression is defined as differential scanning calorimetry (DSC, heating condition 16 ° C /
Min) means that the melting point is lower than that of polyethylene glycol having the same molecular weight. Specific compounds include the following general formula (I)

[0021]

Embedded image (Where X is -CR ₅ R _6- (R ₅ and R ₆ represent hydrogen or an alkyl group), -SO _2- , -O-,
—S—, —C (O) —, etc., and 10 ≦ n + m ≦ 450
Indicates an integer. ), And a compound obtained by adding ethylene oxide (EO) to bisphenol A, bisphenol S, or the like is particularly preferable.

Further, the molecular weight of the hydrophilic compound (A) is preferably 600 to 20,000, more preferably 1,000 to 10,000, and particularly preferably 2,000 in view of compatibility with polyester and dispersibility in polyester.
~ 6000. Most of these compounds need to be copolymerized in the polyester, but some of them may be present in a state of being dispersed in the polymer.

The copolymerization amount of the hydrophilic compound (A) in the copolyester is 4 from the viewpoint of hygroscopicity and spinnability.
0 to 99% by weight is preferred. More preferably 55-9
0% by weight. The moisture absorption / release parameter ΔMR that the copolyester should have is preferably as high as possible, but is preferably 12% or more. It is more preferably at least 15%, particularly preferably at least 18%.

The polar group-containing compound (B) contained in the copolyester (D) is not particularly limited, but is represented by the following general formula (II) Y _i -R ₁ -X _n (II) (wherein R in the formula: ₁ is an organic residue, X is an ester-forming group, n is a positive number of 1 or more, Y _i is a derivative such as an amino group, a sulfonic acid group, a carboxyl group, a hydroxyl group, an amide group, and a phosphonic acid group. A compound having a polar group represented by one or more selected polar groups (i ≧ 1 integer) is preferable.

The term "contained" as used herein means a state of being dispersed or copolymerized in polyester, and particularly preferably copolymerized. As the compound, a compound having a sulfonate group is particularly preferable. By incorporating a polar group-containing compound, not only the hygroscopicity of the polymer is further enhanced,
Hydrogen bonds and ionic interactions occur in the polymer, which has the effect of making it difficult for the fibers to change their physical properties over time.

The content of the polar group-containing compound (B) in the copolyester (D) is preferably 0 to 50 mol% with respect to the acid component constituting the whole polymer, and more preferably 2 to
It is 30 mol%, particularly preferably 2 to 15 mol%. The crosslinking agent (C) contained in the copolyester (D) is not particularly limited as long as it is a compound which reacts with the copolyester to form a crosslinked structure, but generally, the following general formula (III) (R ₃ O) _n R ₂ (COOR ₄ ) _m (III) (wherein R ₂ is an organic residue of 3 to 6, R ₃ is hydrogen or acetyl group, R ₄ is hydrogen or alkyl group, 3
≦ m + n ≦ 6. ) Can be used.

The term "containing" as used herein includes being dispersed in polyester, but preferably having a crosslinked structure by copolymerization. The compound is preferably a polyfunctional carboxylic acid such as trimellitic acid or pyromellitic acid, or a polyol such as glycerin, trimethylolpropane or pentaerythritol, with trimellitic acid being particularly preferred. By including the crosslinking agent (C), not only the hygroscopicity of the polymer is further enhanced, but also a crosslinked structure is formed in the polymer, and when it is made into a fiber, it has an effect that physical properties hardly change with time.

The proportion of the crosslinking agent in the copolyester is
The amount is preferably 0 to 30 mol%, more preferably 1 to 15 mol%, and particularly preferably 2 to 10 mol% with respect to the acid component constituting the whole polymer. In the present invention, it is preferable that at least one of the polar group-containing compound (B) and the cross-linking agent (C) is contained in the copolyester (D), and the polar group-containing compound is particularly preferable. This is to include both (B) and the cross-linking agent (C).
Polar group-containing compound (B) and / or crosslinking agent (C)
Serves as an auxiliary component for further improving the hygroscopicity of the polyester fiber and as a component for stabilizing the physical properties of the fiber.

Further, in the copolyester, pigments such as titanium oxide and carbon black, surfactants such as alkylbenzene sulfonates, conventionally known antioxidants and anti-coloring agents are included within the range not impairing the object of the present invention. A light stabilizer, an antistatic agent, etc. may be added. In the present invention, the fiber-forming polymer used in combination with the copolyester (D) to form the composite fiber or the blended fiber includes polyolefins such as polyethylene and polypropylene, polyamides such as nylon 6 and nylon 66, polyethylene terephthalate, poly Examples include, but are not limited to, polyesters such as butylene terephthalate. Polyester having polyethylene terephthalate as the main component, which is the most versatile, is preferable.

By using the above-mentioned polyether ester amide (E) or copolyester (D) as a constituent component of the polyester fiber, the fiber has high moisture absorption / release characteristics and antistatic property which have never been obtained. It is possible to obtain a synthetic fiber which does not impair the fiber properties of the fiber-forming polymer. The form of the composite fiber applied to the present invention is a core-sheath type composite fiber composed of a core portion 1 and a sheath portion 2 as shown in FIG. 1, and a core portion 1, a sheath portion 2 and a hollow portion as shown in FIG. 3. A core-sheath composite hollow fiber composed of 3 and a sea-island composite fiber composed of an island 1a and a sea 2a as shown in FIG. 3 and a bonded composite fiber composed of bonded parts 1b and 2b as shown in FIG. be able to.

For example, when the copolymerized polyester (D) is used for one of the conjugate fibers, the core-sheath type conjugate fiber shown in FIG. 1 and the core-sheath type conjugate hollow fiber shown in FIG. ) Is used as a core portion, and a fiber-forming polymer, preferably polyester, is used as a sheath portion, and the composite ratio (% by weight) is preferably core / sheath = 5/95 to.
90/10, more preferably 7/93 to 50/50,
Particularly preferably, it is 10/90 to 30/70. Also,
When the polyether ester amide (E) is used,
The polyether ester amide (E) is preferably contained in the core in an amount of 15 to 50% by weight based on the total weight of the polymer.

The lower limit of the composite ratio of the core portion may be determined from the purpose of imparting sufficient moisture absorption / release properties, and the upper limit thereof may be determined from the viewpoint of preventing deterioration of spinnability. When the copolyester (D) is used in the case of the sea-island composite fiber of FIG. 3 and the laminated composite fiber of FIG. 4, the copolyester (D) is used as an island part or one of the bonded parts, A forming polymer, preferably a normal polyester, may be composited in the sea part or the other bonded part, and the composite ratio of the island part or one bonded part is
Preferably 5 to 90% by weight, more preferably 7 to 50
%, Particularly preferably 10 to 30% by weight. Further, when the polyether ester amide (E) is used, the polyether ester amide (E) is added to the island portion or one of the laminated portions in an amount of 15 to 50 relative to the total weight of the polymer.
It is preferable to set the weight%.

The lower limit of the composite ratio of the island portion or one of the bonded portions may be determined from the point of providing sufficient moisture absorbing / releasing property, and the upper limit thereof may be determined from the viewpoint of preventing deterioration of the spinnability. In the case of blended fibers, the mixing ratio when the copolyester (D) is used is 3 to 80% by weight, more preferably 7 to 30% by weight, based on the total polymer. When the polyether ester amide (E) is used, it is preferable that the polyether ester amide (E) is 15 to 50% by weight based on the total weight of the polymer.

The lower limit of the blending ratio may be determined from the point of imparting sufficient moisture absorbing / releasing properties, and the upper limit thereof may be determined from the viewpoint of preventing a decrease in spinnability. The cross-sectional shape of the composite fiber or the blended fiber is not limited to a circular shape, but may be a modified cross-section such as a triangular shape, a flat shape, or a multilobe shape. The polyester fiber having hygroscopicity and antistatic property used in the present invention,
As a yarn to be used for a pile fabric, the single yarn fineness is in the range of 0.5 to 7 denier. If the single yarn fineness is less than 0.5 denier, hair collapses when used as a pile fabric,
A white blur phenomenon may occur. The single yarn fineness is 7
If it exceeds denier, it may become stiff and lose its soft texture.

The pile density of the pile fabric is preferably 700 to 2500 per square inch. If the pile density is less than 700 per square inch,
Insect-eating and ground see-through that are unpleasant for pile fabrics will appear, and the hair may fall easily due to a reduction in rigidity. Further, when the pile density exceeds 2,500 per square inch, the napped feeling and the soft feeling, which are the characteristics of the pile fabric, are not sufficiently exhibited, and it becomes difficult to obtain an excellent feeling.

In the present invention, it is preferable to use 100% by weight of the above-mentioned hygroscopic and antistatic polyester fibers as the fibers constituting the pile fabric. However, in terms of comfort, the moisture absorption / release parameter ΔM
As long as R is 1% or more, preferably 1.2% or more, and within a range having antistatic property, it may be used only for the pile portion or only for the ground yarn.

In constructing a pile fabric, the hygroscopic and antistatic polyester fibers are usually used as a twisted yarn with polyester fibers or the like, or as a knitted woven pile or a raised fabric. It is possible to exert a sufficient effect even in the tone expression. Moreover, the same effect can be exhibited as a spun yarn or a long fiber.

[0038]

EXAMPLES The methods for measuring various properties used in the examples described below are as follows. [Moisture absorption / release parameter ΔMR] A certain amount of fiber or width 4
Three pile fabrics cut into 0 cm and 40 cm in length were prepared, and the weight W ₀ after drying for 6 hours in a hot air dryer at 60 ° C.
After measuring the temperature, use a constant temperature and humidity of 20 ° C x 65% RH for 24 hours.
The weight W ₁ after humidity conditioning and the weight W ₂ after humidity conditioning for 24 hours were measured with a thermo-hygrostat of 30 ° C. × 90% RH, respectively.
The moisture absorption rate MR ₁ at 20 ° C. × 65% RH and the moisture absorption rate MR ₂ at 30 ° C. × 90% RH were calculated by the following equations, and the moisture absorption / release parameter ΔMR was calculated by the following equation.

MR ₁ = [(W ₁ −W ₀ ) / W ₀ ] × 100 MR ₂ = [(W ₂ −W ₀ ) / W ₀ ] × 100 ΔMR (%) = MR ₁ −MR ₂ [friction band Voltage] Measured according to the method B of JIS L1094. [Sensory Evaluation (Sweatiness and Antistatic Property)] An automobile seat is prepared, and sensory evaluation is performed after driving for 2 hours from the rainy season to summer and winter. The evaluation is performed in 5 levels from excellent to impossibility. 10
The average value of human panelists was shown. [Pile Density] A vertical and horizontal 1-inch grid was drawn, and the number of vertical and horizontal piles was counted, and expressed as vertical × horizontal = number of piles (number). This was shown by the average value of 5 times. Examples 1 to 3 ε-caprolactam 340 parts, terephthalic acid 18 parts, polyethylene glycol 100 having a number average molecular weight of 1000
Parts, further 0.1 parts Irganox 1330 (manufactured by Ciba Geigy) and 0.01 parts of trimethyl phosphate.
Was charged into a polymerization reaction vessel together with the parts, and was put under a nitrogen stream for 240
After heating and stirring at ℃ for 1 hour, 0.1 part of antimony trioxide was added and heated under reduced pressure program at 250 ℃, 0.5 mm
By carrying out the polymerization reaction for 4 hours under the condition of Hg or less,
A polyetheresteramide block copolymer having a nylon 6 component content of 45% by weight was produced.

The relative viscosity ηr at 25 ° C. of this orthochlorophenol solution (concentration 0.5 g / 100 ml) was 2.05. In addition, 30 ° C. × 9
The moisture absorption at 0% RH was 15.2%. Next, this polyether ester amide block copolymer was used as the core (X), ordinary polyester was used as the sheath (Y), and the composite ratio was varied as in Examples 1 to 3 of Table 1, respectively. A core-sheath type composite fiber was spun at a spinning temperature of 280 ° C., a spinneret hole number of 30 and a take-up speed of 1000 m / min, and then drawn at a draw ratio of 3.4 times to form a 75 denier, 36 filament round-section composite drawn yarn. I chose

These drawn composite yarns having a circular cross section were respectively used for three types of yarns of front, middle and back, and a front yarn (pile yarn portion) 1 × 5 design, middle yarn 1 × 2 design, back yarn 1 × 1 design were obtained. After knitting three reed tricots, dyeing, brushing, shearing, finishing processing and pile length 2.5mm 3
5 wales / in, 62 courses / in, pile density 21
70 pile fabrics (velour products) were manufactured.

Table 1 shows the core (X) and the sheath (Y), respectively.
The characteristics of three types of pile fabrics (Examples 1 to 3) composed of three types of composite yarns having different composite ratios were shown. These three types of pile fabrics are composed of composite yarns having a polyether ester amide composite ratio of 15 to 30% by weight, a moisture absorption / release parameter ΔMR of 1.2 to 3.1% and a friction electrification voltage of 0.28 to.
It was 0.10 kv.

An automobile seat made of this pile fabric and used for a long period of time from the rainy season in June to August and the summer time showed no discomfort such as stuffy feeling, a dry feeling, and comfort. Was excellent. In addition, as a result of long-time use in the winter months of January to February, there is little discharge due to static electricity, and there is no discomfort such as tingling sensation due to static electricity generated when sitting or leaving the seat, and there is no phenomenon of clothes clinging. It was

Comparative Example 1 A pile fabric was produced in the same standard as in Example 1 except that 100% by weight of normal polyester fiber containing no polyetheresteramide was used. The pile fabric made of this polyester fiber has a moisture absorption / release parameter ΔMR of 0% and a friction electrification voltage of 6.83 k.
It was v.

As shown in Table 1, the same results as in the above-mentioned Examples were prepared for automobile seats and used for a long period of time from the rainy season in June to August and during the summer season. Some panelists had a strong feeling of discomfort. In addition, the results of use in the winter months of January to February were inferior in comfort due to strong discharge of static electricity, giving a tingling sensation such as a tingling sensation, and clothes clinging to each other.

Example 4 Dimethyl terephthalic acid 194 as a copolyester
Parts, ethylene glycol 135 parts, dimethyl 5-sodium sulfoisophthalate (SSIA) 26.6 parts, trimethyl trimellitate (TMTM) 7.5 parts, and tetrabutyl titanate 0.1 part are added, and the amount is 140 to 230.
After transesterification while distilling methanol at ℃, 0.08 parts of trimethyl phosphate, Irga as an antioxidant
0.2 parts of nox 1010 (manufactured by Ciba-Gaiki), 0.2 parts of silicon as a defoaming agent and 0.1 of tetrabutyl titanate
Under the reduced pressure of 1.0 mmHg and at 250 ° C., 4
Polymerization was carried out for a period of time to produce a copolyester.

The proportion of polyethylene glycol copolymerized with this copolymer polyester was 60% by weight. In addition, the moisture absorption / release parameter ΔM of this copolyester
R is 28.0% (MR ₁ = 1.5%, MR ₂ = 29.5).
%)Met. The above-mentioned copolymerized polyester is used as the core portion (X), and the normal polyester is melted as the sheath portion (Y) separately, and the core-sheath type composite yarn is composite-spun so that the core / sheath (weight ratio) becomes 15/85. By stretching, heat treatment, and
It was a composite fiber of 5 denier and 36 filaments.

The obtained conjugate fiber was made into a pile fabric in the same standard as in Example 1. The moisture absorption / release parameter ΔMR of this pile fabric is 3.9%, and the frictional electrification voltage is 0.06.
kv. The results of sensory evaluation in the same manner as in Example 1 are as shown in Table 1, and were excellent in comfort due to hygroscopicity and antistatic property.

Example 5 The yarn of the composite fiber obtained in Example 3 was used as the middle and back yarns, and the yarn of normal polyester fiber 75 denier and 36 filaments was used as the front yarn (pile yarn).
A pile fabric was created with the same standard as above. This pile fabric had a moisture absorption / release parameter ΔMR of 1.4% and a frictional electrification voltage of 0.25 kv.

An automobile seat was prepared in the same manner as in Example 3 and used for a long period of time from June to August.
I didn't feel sticky due to sweating. Also, even in the winter, no discharge due to static electricity was felt, and no phenomenon such as clinging to clothes occurred.

[0051]

[Table 1]

Example 6 Same as Example 1 except that a core-sheath type composite yarn having a compounding ratio of 90% by weight of normal polyester fiber (sheath part) and 10% by weight of polyetheresteramide (core part) was used. A standard pile fabric was produced. The moisture absorption / release parameter ΔMR of this pile fabric is 1.0%, and the frictional electrification voltage is 0.34 kv.
Met.

An automobile sheet was produced from this cloth and evaluated in the same manner as in the examples. The results are shown in Table 1. There was no tingling sensation due to static electricity, and a slight tingling sensation was felt in the summer. The sheet was almost satisfactory.

[0054]

As described above, the polyester pile fabric of the present invention uses the polyester fiber having hygroscopicity and antistatic property, and has a moisture absorption / release parameter ΔM as a fabric.
Since R is 1% or more, there is no stuffy feeling or tingling due to static electricity, and excellent use comfort can be obtained.

[Brief description of drawings]

FIG. 1 is a model diagram showing a cross section of a core-sheath type composite fiber used in the present invention.

FIG. 2 is a model view showing a cross section of a core-sheath hollow composite fiber used in the present invention.

FIG. 3 is a model view showing a cross section of a sea-island type composite fiber used in the present invention.

FIG. 4 is a model view showing a cross section of a laminated composite fiber used in the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Core part 2 Sheath part 1a Island part 2a Sea part 1b, 2b Lamination part 3 Hollow part

Claims (7)

[Claims] 1. A pile fabric containing a polyester fiber having hygroscopicity and antistatic property, wherein the moisture absorption / release parameter ΔMR of the pile fabric is 1% or more. 2. The polyester pile cloth according to claim 1, wherein the polyester fiber has a structure containing a polyether ester amide. 3. The polyester fiber according to claim 1, wherein the polyester fiber is copolymerized with a hydrophilic compound and contains a copolymerized polyester containing at least one of a polar group-containing compound and a crosslinking agent. Polyester pile fabric. 4. The single yarn fineness of the fibers constituting the pile fabric is 0.5 to 7 denier, and the pile density of the pile fabric is 700 to 2500 per square inch. A polyester pile cloth according to the above. 5. The polyester pile cloth according to claim 1, wherein a frictional electrification voltage of the pile cloth is 3 kv or less. 6. The polyester pile fabric according to claim 1, wherein the polyester fiber is used as a pile yarn and / or a base yarn. 7. The polyester pile cloth according to claim 1, wherein the fibers constituting the pile cloth consist of 100% by weight of the polyester fiber.