JP2009263832A - Thin woven fabric excellent in tear strength, and textile product using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thin woven fabric excellent in tear strength while exhibiting flat surface touch, and to provide a textile product using the same. <P>SOLUTION: The thin woven fabric, which is 100 g/m<SP>2</SP>in basis weight, comprises polyester fibers A comprising a polyester containing 2.0-20.0 wt.%, based on polymer weight, of a specific modified silicone compound. The textile product using the above thin woven fabric is also provided. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a thin woven fabric excellent in tearing strength and a fiber product using the woven fabric.

  Conventionally, nylon-based fibers have been mainly used as a type of fiber in order to achieve both lightweight thinning and tearing strength in sports clothing applications such as windbreakers and industrial applications such as tents, sleeping bags, and canvas. This is because nylon fibers have a higher breaking strength per fineness than polyester fibers. In addition, the woven fabric has a ripstop taffeta in which two or more warps and wefts are arranged in addition to the base structure, and a thin base yarn is used for the base yarn of the fabric and a high-strength reinforcing yarn is used as the warp. And / or woven fabrics arranged in wefts have been proposed (see, for example, Patent Document 1 and Patent Document 2).

  However, nylon fibers have poor light fastness compared to polyester fibers, and have a problem that their colors fade when used outdoors. In addition, when a woven fabric is composed of a base yarn and a reinforcing yarn having a finer size than that, there is a problem that unevenness appears on the surface of the fabric due to the difference in the thickness of these yarns, resulting in a rough surface touch and a decrease in comfort. .

Japanese National Patent Publication No. 10-513229 JP 2004-31015 A

  This invention is made | formed in view of said background, The objective is to provide the thin fabric and textiles excellent in tearing strength, exhibiting a flat surface touch.

  As a result of intensive studies to achieve the above problems, the present inventors have found that when a woven fabric is obtained using a polyester fiber comprising a polyester containing a specific modified silicone compound, an excellent tear strength can be obtained. The present invention has been completed through intensive studies.

Thus, according to the present invention, “a thin woven fabric having a basis weight of 100 g / m ² or less and containing a modified silicone compound represented by the following general formula (1) in an amount of 2.0 to 20.0 wt% based on the polymer weight. A thin woven fabric excellent in tearing strength, characterized by comprising polyester fiber A containing polyester. "

［上記式（１）中、Ｒ_１、Ｒ_２、Ｒ_３は同一もしくは異なっても良く、一部もしくは全部がハロゲン原子で置換されていても良い炭素数１８個以下のアルキル基、アルケニル基、アリール基、アラルキル基又はアルキルアリール基を表す。Ｒ_４、Ｒ_５、Ｒ_７は同一もしくは異なっても良い炭素数１０個以下のアルキレン基、アリーレン基、アラルキレン基又はアルキルアリーレン基を表す。Ｒ_６は炭素数１０個以下のアルキル基、アルケニル基、アリール基、アラルキル基又はアルキルアリール基を表わし、Ｘはカルボキシル基及び水酸基よりなる群から選ばれた少なくとも１種の基であり、ｎは１〜１００である。］

[In the above formula (1), R _1, R _{2 and} R ₃ may be the same or different, and a part or all of them may be substituted with a halogen atom, an alkyl group having 18 or less carbon atoms, an alkenyl group, Represents an aryl group, an aralkyl group or an alkylaryl group; R ₄ , R ₅ and R ₇ represent the same or different alkylene group having 10 or less carbon atoms, an arylene group, an aralkylene group or an alkylarylene group. R ₆ represents an alkyl group having 10 or less carbon atoms, an alkenyl group, an aryl group, an aralkyl group or an alkylaryl group, X is at least one group selected from the group consisting of a carboxyl group and a hydroxyl group, and n is 1-100. ]

  At that time, the tear strength of the fabric is preferably 800 cN or more. Moreover, it is preferable that the said polyester fiber A is a core-sheath-type composite fiber by which the said polyester containing a modified silicone compound was distribute | arranged to the sheath part. In the core-sheath type composite fiber, the core / sheath weight ratio is preferably in the range of 30/70 to 90/10. Moreover, it is preferable that the total fineness of the said polyester fiber A is 70 dtex or less. The polyester fiber A is preferably a false twist crimped yarn.

In the woven fabric of the present invention, the woven fabric is preferably composed only of the polyester fiber A. Further, the cover factor CF defined by the following formula is preferably 1500 or more.
CF = (DWp / 1.1) ^1/2 × MWp + (DWf / 1.1) ^1/2 × MWf
However, DWp is the total warp fineness (dtex), MWp is the warp weave density (main / 2.54 cm), DWf is the total weft fineness (dtex), and MWf is the weft weave density (main / 2.54 cm).

  Moreover, it is preferable that the surface of the fabric is calendered.

  Moreover, according to the present invention, any one of the textile products selected from the group consisting of sports clothing, fashion clothing, uniform clothing, tent materials, civil engineering materials, sailcloths, and parachute materials, using the above-mentioned fabric. Provided.

  ADVANTAGE OF THE INVENTION According to this invention, the thin fabric and fiber product which were excellent in tearing strength, exhibiting a flat surface touch, are obtained. Such thin fabrics and textiles also have excellent water repellency.

  In the present invention, the polyester fiber A is composed of a polyester composition containing 2.0 to 20.0% by weight of a modified silicone compound having the structure of the formula (1) based on the weight of the polyester composition. If the content is less than the lower limit, it is difficult to obtain a sufficient tear strength when the resulting polyester fiber is used as a woven fabric. On the other hand, if the upper limit is exceeded, the strength of the resulting polyester fiber is poor and yarn breakage is likely to occur. . The content of the preferred modified silicone compound is in the range of 5.0 to 15.0% by weight, more preferably 7.0 to 12.0% by weight. In addition, the modified silicone in the present invention means that the modified silicone compound is incorporated into the molecular chain by chemical bonding to the polyester and copolymerized, and the polyester is blended without chemical bonding. It means both states that exist in the state.

The modified silicone compound used in the present invention is represented by the above formula (1), and in the above formula (1), R _1, R _{2 and} R ₃ may be the same or different, and part or It represents an alkyl group, alkenyl group, aryl group, aralkyl group or alkylaryl group having 18 or less carbon atoms, all of which may be substituted with a halogen atom. R _4, R ₅ and R ₇ may be the same or different and each represents an alkylene group having 10 or less carbon atoms, an arylene group, an aralkylene group or an alkylarylene group. R ₆ represents an alkyl group having 10 or less carbon atoms, an alkenyl group, an aryl group, an aralkyl group or an alkylaryl group, X represents a carboxyl group or a hydroxyl group, and n is 1 to 100.

Known modified silicone compounds include polyester raw materials such as one carboxyl group or hydroxyl group at each of both ends of a siloxane structure extending in a long chain, in addition to the above-mentioned one-end direactive functional group-modified structure. Both-end modified type having a functional group capable of reacting with one side, one-end one-reactive functional group-modified type having one of the above functional groups at one end of the siloxane structure, side having a plurality of functional groups in the side chain There is a chain-modified type, but both ends-modified type are incorporated into the polyester main chain in a straight line, so that the functional group of the modified silicone does not appear on the surface of the polyester molded product at the time of molding. I can't. In addition, the one-terminal monoreactive functional group-modified type and the side chain-modified type react with the functional group involved in the polycondensation reaction and the terminal or side chain of the modified silicone compound, which may inhibit the polycondensation reaction. In addition, since the compatibility with the polyester is poor and it is difficult to blend uniformly, it is not preferable because it causes the occurrence of yarn breakage during yarn production and causes fluff. Further, it is not preferable because it has a problem that it tends to bleed out. Further, when R _{1 to} R ₇ in the general formula (1) are not functional groups as described above, the desired tear strength cannot be obtained, or the modified silicone compound may not be sufficiently mixed with the polyester. is there. Even if they can be mixed, the modified silicone compound may bleed out from the polyester composition while dyeing, heating, or washing the fibers obtained by spinning the polyester composition, which is not preferable. Among these functional groups, R _{1 to} R ₃ are unsubstituted alkyl groups having 1 to 6 carbon atoms, and R ₄ , R ₅ , and R ₇ are unsubstituted alkylene groups having 1 to 4 carbon atoms. R ₆ is preferably an alkyl group having 4 or less carbon atoms.

  The number average molecular weight of the modified silicone compound is preferably 10,000 or less, more preferably 300 or more and 8000 or less, and particularly preferably 500 or more and 6000 or less. If the number average molecular weight is larger than the upper limit, the compatibility with the polyester deteriorates, making it difficult to blend uniformly in the polyester, and there are problems such as broken yarn, fluff, and bleed out when the polyester fiber is used. This is not preferable.

  Moreover, it is preferable that 20 to 50 weight% of the modified silicone compound contained in the polyester composition is copolymerized with the polyester based on the weight of the modified silicone compound. If the amount of the copolymerized modified silicone compound is less than the lower limit, the dispersibility of the modified silicone compound blended in the polyester composition tends to deteriorate, whereas if it exceeds the upper limit, mechanical strength such as the strength of the resulting polyester is obtained. The physical properties tend to be low when compared with the same content. A preferred ratio of the copolymerized modified silicone compound is in the range of 20 to 50% by weight.

As will be described later, the amount and structure of the copolymerized modified silicone compound and the modified silicone compound in a blended state can be distinguished and specified by ¹ H-NMR measurement. Moreover, it is described in Unexamined-Japanese-Patent No. 2002-48777 that it is the above-mentioned one terminal bireactive functional group modified type, ie, the structure which has two reactive functional groups in the one terminal of the siloxane structure of a modified silicone compound. Thus, it can be confirmed that a polyurethane resin reaction product obtained by reacting a polyisocyanate having three isocyanate groups in the molecule is analyzed by gel permeation chromatography.

  In the present invention, the polyester constituting the polyester fiber A can preferably include aromatic polyesters such as polyethylene terephthalate, polybutylene terephthalate, and polyethylene naphthalate, and among these, the balance of mechanical properties, moldability, etc. Polyethylene terephthalate and polybutylene terephthalate obtained are preferred. These polyesters may be copolymerized with other components according to the purpose within a range not impairing the effects of the present invention. For example, examples of the copolymer component include isophthalic acid, 5-sodium isophthalic acid, adipic acid, trimellitic acid, diethylene glycol, propylene glycol, 1,4-cyclohexanedimethanol, and pentaerythritol. In addition, polycarboxylic acids such as trimellitic acid, trimesic acid, trimellitic anhydride, pyromellitic acid, trimellitic acid monopotassium salt, polyvalent hydroxy such as glycerin, sodium dimethylolethylsulfonate, potassium dimethylolpropionate, etc. You may copolymerize compounds, hydroxycarboxylic acids, such as p-hydroxybenzoic acid.

  What is necessary is just to synthesize | combine by the well-known arbitrary methods as a manufacturing method of polyester in this invention. For example, when the dicarboxylic acid component is terephthalic acid, a method of directly esterifying terephthalic acid and alkylene glycol, a method of transesterifying a lower alkyl ester of terephthalic acid such as dimethyl terephthalate and alkylene glycol, or terephthalic acid The first stage reaction is performed to produce a glycol ester of terephthalic acid by a method of reacting an acid and an alkylene oxide, followed by heating under reduced pressure in the presence of a polymerization catalyst to polycondensate until a desired degree of polymerization is obtained. It can be produced by a stage reaction. In addition, it is preferable to perform the addition time of the above-mentioned modified silicone compound before the end of the polycondensation reaction before the end of the polycondensation reaction from the viewpoint of satisfying the copolymerization ratio as described above. It may be added separately. The proportion of the modified silicone compound copolymerized can be adjusted by the addition timing and addition amount.

  When the first stage reaction is a transesterification reaction, the reaction temperature is 180 to 230 ° C., the reaction pressure is preferably in the range of normal pressure to 0.3 MPa, and the second stage reaction (polycondensation reaction) The reaction temperature is preferably 200 to 260 ° C. and the reaction pressure is preferably 60 to 0.1 kPa. Such transesterification reaction and polycondensation reaction may be performed in one step or may be performed in multiple steps.

  As the transesterification catalyst used in these reaction steps, an alkali metal salt such as sodium, an alkaline earth metal salt such as magnesium or calcium, or a metal compound such as titanium, zinc or manganese is preferably used. As the polycondensation catalyst, germanium compounds, antimony compounds, titanium compounds, cobalt compounds or tin compounds are preferably used. The amount of the catalyst used is not particularly limited as long as it is an amount necessary for proceeding the transesterification reaction and polycondensation reaction, and a plurality of catalysts can be used in combination. Further, when the first stage reaction is a direct esterification reaction, the esterification reaction can proceed directly without using a catalyst, but the above catalyst may be used if necessary.

  It is also preferable to add a stabilizer during the first stage reaction, during the second stage reaction, or after completion of the reaction. As the stabilizer, phosphate esters such as trimethyl phosphate, triethyl phosphate, triphenyl phosphate, phosphites such as triphenyl phosphate, acid phosphate esters such as methyl acid phosphate, dibutyl phosphate, monobutyl phosphate Phosphorus compounds such as phosphoric acid, phosphorous acid, hypophosphorous acid, or polyphosphoric acid, hindered phenol antioxidants, sulfur antioxidants, and amine antioxidants are preferred.

  In the polycondensation stage, the polycondensation reaction is carried out under the above conditions until it can be confirmed that the degree of polymerization (molecular weight, intrinsic viscosity) of the target polyester is obtained by a technique such as monitoring the melt viscosity. Then, after confirming that the target molecular weight has been reached, the polycondensation reaction is terminated, and the polyester can be obtained by discharging from the reaction tank and cutting into chips after cooling. After the chip is dried, it can be used for the production of polyester fibers and the like described later. Moreover, you may manufacture a polyester fiber as it is from the polyester after completion | finish of a polycondensation reaction, without once shape | molding in chip shape.

  In the present invention, the polyester fiber A has an intrinsic viscosity (solvent: a mixed solvent of 40% by weight of 1,1,2,2-tetrachloroethane and 60% by weight of phenol) of 0.61 or more in a fiber state. It is preferable. A more preferable lower limit of the intrinsic viscosity is 0.63 dl / g or more. On the other hand, the upper limit of the intrinsic viscosity is not particularly limited, but is preferably 0.80 dl / g or less from the viewpoint of spinning stability, and further, the step of increasing the intrinsic viscosity such as solid phase polymerization is omitted or time-consuming. Is preferably 0.70 dl / g or less. One of the characteristics of the polyester fiber A is that the intrinsic viscosity is not less than the lower limit, so that deterioration of mechanical properties such as strength due to the inclusion of the modified silicone compound can be suppressed, which is sufficient for practical use. That is, the fiber is provided with a strength sufficient to prevent the production process and yarn breakage during use. In order to satisfy the intrinsic viscosity in the state of such a fiber, in part, the temperature in the melt extruder when extruding into a fiber is made as low as possible, and the residence time there is shortened, so that the polymer However, even if such conditions are adopted, a decrease in the intrinsic viscosity of 0.2 to 0.3 dl / g is unavoidable. It is preferable that the viscosity be 0.3 dl / g or more higher than the intrinsic viscosity in the fiber state.

  The polyester fiber A can be produced by a method known per se. For example, the spinning method is not particularly limited, for example, a method in which the polyester composition obtained as described above is extruded into a fiber form in a molten state, melt-spun at a speed of 500 to 3500 m / min, stretched, and heat treated. , A method in which melt spinning is performed at a speed of 1000 to 5000 m / min, and stretching and false twisting are performed simultaneously or subsequently, a method in which melt spinning is performed at a high speed of 5000 m / min or more, and a stretching process is omitted depending on the use. It is done. Further, the fiber thus obtained may be cut into a desired length to form a short fiber, and a method such as spunbonding or melt blow spinning can be preferably employed. The cross-sectional shape of the fiber is not particularly limited, and may be an elliptical cross section, a triangular cross section, or a star cross section in addition to a circular cross section. Further, the polyester fiber A in the present invention is not limited to a fiber spun using only the polyester composition containing the above-described modified silicone compound, and is disposed on the surface of the fiber from which the polyester composition containing the modified silicone compound is obtained. Thus, for example, a core-sheath composite in which the polyester composition containing the modified silicone compound is disposed in the sheath, and the polyester composition containing no modified silicone compound or less in the sheath than the polyester composition in the sheath is disposed in the core. It may be a fiber or a sea-island type composite fiber having many cores. Such a composite fiber formation is preferable in that the mechanical properties of the fiber are more easily maintained and the tear strength of the fabric is increased. In that case, in such a composite fiber, the core / sheath weight ratio is preferably in the range of 30/70 to 90/10.

  As described above, the polyester fiber A has an excellent tear strength when it is made into a woven fabric by containing a modified silicone compound. Here, from the viewpoint of developing sufficient tear strength, the contact angle of the polyester fiber surface with water is preferably 110 ° or more, more preferably 115 ° or more. By providing the polyester fiber itself with such a high contact angle, it is possible to develop an excellent tear strength when it is made into a woven fabric.

  In addition, the polyester fiber A has a single yarn fineness in the range of 0.5 to 5.0 dtex, and further in the range of 1.0 to 3.0 dtex, from the viewpoint of handling properties such as tear strength and subsequent processing steps. It is preferable. Moreover, when using as a long fiber, it is preferable for the same reason that the total fineness (single-fiber fineness x number of single yarns) as a fiber bundle is 70 dtex or less (preferably 10-70 dtex, more preferably 30-70 dtex). When the total fineness is larger than 70 dtex, there is a possibility that the thin fabric targeted by the present invention cannot be obtained. The polyester fiber A is preferably a false twist crimped yarn. When the polyester fiber A is a false twist crimped yarn, it is possible to add stretchability to the woven fabric, and the tear strength is improved, which is preferable.

  The polyester fiber A has an excellent tear strength by containing a modified silicone compound. In particular, when a fabric is used, the contact angle between the surface of the polyester fiber and water is preferably 110 ° or more, more preferably 115 ° or more, from the viewpoint of exhibiting sufficient tear strength. By providing such a high contact angle to the polyester fiber A itself, it is possible to develop an excellent tear strength when it is made into a woven fabric.

The fabric of the present invention is a fabric containing the polyester fiber A and having a basis weight of 100 g / m ² or less (preferably 10 to 100 g / m ² ). Here, it is preferable that the A polyester fiber is contained in an amount of 30% by weight or more (most preferably 100% by weight) based on the total weight of the woven fabric. If the content of the polyester fiber A is less than 30% by weight, sufficient tear strength may not be obtained. In addition, when the textile fabric of this invention is comprised with the said polyester fiber A and another fiber, as another fiber, the polyester fiber similar to the said polyester fiber is preferable except not containing a modified silicone compound.

In the woven fabric of the present invention, the total cover factor CF defined by the following formula is preferably 1500 or more (preferably 1500 to 2500) from the viewpoint of tear strength. If the cover factor CF is smaller than 1500, a stitch slip may occur.
CF = (DWp / 1.1) ^1/2 × MWp + (DWf / 1.1) ^1/2 × MWf
However, DWp is the total warp fineness (dtex), MWp is the warp weave density (main / 2.54 cm), DWf is the total weft fineness (dtex), and MWf is the weft weave density (main / 2.54 cm).

  In the woven fabric of the present invention, the woven structure is not particularly limited, and plain texture, oblique weave, satin weave, etc. Mihara texture, altered structure, altered texture such as altered oblique weave, warp double weave, weft double weave, etc. For example, vertical pile weave such as velvet, towel, velor, etc., weave pile such as velvet, weave velvet, velvet, cole heaven, etc. In addition, the textile fabric which has these woven structures can be woven by a normal method using normal looms, such as a rapier loom and an air jet loom. The number of layers is not particularly limited and may be a single layer or a woven fabric having a multilayer structure of two or more layers. Among these, a flat structure or its changed structure is preferable in terms of tearing strength.

  For the fabric of the present invention, conventional brushing processing, water repellent processing, and further, UV shielding or antistatic agent, antibacterial agent, deodorant agent, insect repellent agent, phosphorescent agent, retroreflective agent, negative ion generator, etc. Various processes for imparting functions may be additionally applied. In particular, calendering (heating and pressing) is preferably performed.

  In the woven fabric thus obtained, the polyester fiber A is contained, so that it has excellent tearing strength while being thin. Although the reason has not yet been clarified, it is presumed that the polyester fiber A has an excellent water repellency, and therefore has a good influence on the surface friction characteristics or the tear strength of the fabric. At that time, the tear strength is preferably 800 cN or more (more preferably 800 to 3000 cN).

  Next, the textile product of the present invention is any one of the fibers selected from the group consisting of sports clothing, fashion clothing, uniform clothing, tent material, civil engineering material, sail cloth, and parachute material, using the woven fabric. Product textile products. Such a textile product exhibits excellent tear strength because it contains the woven fabric.

  EXAMPLES Hereinafter, although an Example is given and this invention is demonstrated concretely, this invention is not limited to these Examples.

(1) Intrinsic viscosity:
A sample was dissolved in a mixed solvent of 40% by weight of 1,1,2,2-tetrachloroethane and 60% by weight of phenol and measured at 35 ° C. according to a conventional method.

(2) Strength and elongation The strength and elongation at break were measured with a tensile tester in an atmosphere of 20 ° C. and 65% RH under the conditions of a sample length of 20 cm and a speed of 20 cm / min. The number of measurements was 10, and the average was taken as each strength and elongation.

(3) Contact angle:
In (6) water repellency test described later, a single yarn was collected from a test piece before alkali weight reduction, and distilled water was used using an automatic micro contact angle measuring device “MCA-2” manufactured by Kyowa Interface Science Co., Ltd. The contact angle of the single yarn surface was measured using 500 picoliters. The larger the contact angle, the better the water repellency.

(4) Amount of contained silicone compound:
^The amount of modified silicone contained in the polyester composition was quantified by ¹ H-NMR method. Furthermore, the polyester sample was dissolved in an appropriate solvent, a poor solvent was added to perform reprecipitation, and ¹ H-NMR measurement was also performed on the solid matter obtained by filtration. The amount of the modified silicone compound copolymerized in the polyester is quantified from the value of the measurement result after the latter reprecipitation operation, and the difference between the value of the measurement result before the former reprecipitation and the value of the latter measurement result. The amount of the silicone compound blended was quantified. In addition, in the chemical structure of the modified silicone compound, for the blended component, the component in the solvent for reprecipitation operation is the recovered component, and for the copolymerized component, the residual component after hydrolysis of the reprecipitated polyester is used. This can be done by measuring.

(5) Spinnability:
The spinnability in the spinning process was expressed by the following four-step evaluation.
A: There is no fluff generation or yarn breakage, and it is very good.
○: Slightly fluffy but good without thread breakage.
Δ: Slightly fluffed and thread breakage occurred (1-2 times / hr)
X: Fluff occurs and yarn breakage occurs frequently (3 times / hr or more)
Among these evaluations, ◯ or higher is an evaluation result that can be used practically.

(6) Water repellency:
The water repellency was evaluated as a substitute characteristic of the fiber surface. A plain fabric was woven using the polyester fibers obtained in each Reference Example for warp and weft, and the fabric was refined and dried by a conventional method, and then heat-set at 180 ° C. Further, a part of the alkali was reduced by an ordinary method so that the weight loss rate was 30% by weight. The fabric after the alkali weight reduction thus obtained was measured according to JIS-L-1092 (spray method) (1992). From the state of the fabric after the measurement, evaluation was performed with a score of 0 to 100 points according to the following criteria described in the JIS standard.
100 points: No wetness or water droplet adhesion on the surface.
90 points: those which do not get wet on the surface, but show adhesion of small water droplets.
80 points: those showing small individual water droplets on the surface.
70 points: Shows wetness in more than half of the surface, and shows that small individual wetness penetrates the fabric.
50 points: Wet on the entire surface.
0 point: The front and back surfaces are all wet.

(7) Thickness of woven fabric The thickness of the woven fabric was measured according to JIS L 1096.

(8) Fabric basis weight The fabric basis weight was measured according to JIS L 1096.

(9) Cover factor Total cover factor CF, warp cover factor, and weft cover factor were calculated by the following formula.
Total cover factor CF = (DWp / 1.1) ^1/2 × MWp + (DWf / 1.1) ^1/2 × MWf
Warp cover factor = (DWp / 1.1) ^1/2 x MWp
Weft cover factor = (DWf / 1.1) ^1/2 x MWf
However, DWp is the total warp fineness (dtex), MWp is the warp weave density (main / 2.54 cm), DWf is the total weft fineness (dtex), and MWf is the weft weave density (main / 2.54 cm).

(10) Tear strength The tear strength in the vertical and horizontal directions was measured in accordance with JIS L1096 8.15.5 D method (pendulum method).

(11) Slip property According to JIS L1062 8.21.1 (seam slip-off method) B method, the slip amount of the seam was quantitatively evaluated.

(12) Surface Touch Three testers evaluated the surface touch of the woven fabric in three stages: Grade 3: flat and good, Grade 2: normal, Grade 1: not flat.

[Reference Example 1]
100 parts by weight of dimethyl terephthalate, 60 parts by weight of ethylene glycol, modified silicone compound (shown by general formula (1), X is a hydroxyl group, R _{1 to} R ₃ are methyl groups, R ₄ is a trimethylene group, R ₅ and R ₇ Is a methylene group, R ₆ is an ethyl group, n = 9 compound: manufactured by Chisso Corporation, trade name: FM-DA11, average molecular weight: 1000) 2 parts by weight, manganese acetate tetrahydrate 0.031 parts The mixture was heated from 140 ° C. to 240 ° C. in a nitrogen gas atmosphere over 3 hours, and the ester exchange reaction was carried out while distilling the produced methanol out of the system. After the transesterification reaction is completed, 0.024 part of phosphoric acid as a stabilizer and 0.04 part of antimony trioxide as a polycondensation reaction catalyst are added, then the temperature is raised to 285 ° C., and the polycondensation reaction is performed under reduced pressure. To obtain a polyester composition. When the intrinsic viscosity of this polyester composition was measured, it was 0.654 dl / g. The amount of the modified silicone compound contained in the polyester composition was 2% by weight. After the polyester composition was dried, it was melted at 285 ° C. in a single-screw extruder, and a spin extrusion temperature of 290 ° C. from a spinneret having 24 round hole extrusion nozzle holes with a hole diameter of 0.3 mmφ and a land length of 0.6 mm. Were discharged under the condition of a total discharge amount of 24 g / min and taken up at a speed of 1000 m / min to obtain an undrawn yarn. The obtained undrawn yarn was drawn 3.3 times at 80 ° C. and heat-treated at 180 ° C. to obtain polyester fibers of 77.6 dtex / 24 filaments.
Properties of the obtained polyester composition, polyester fiber and fabric are shown in Table 1.

[Reference Examples 2 and 3, Reference Examples 8 and 9]
The same operation as in Example 1 was repeated except that the amount of the modified silicone compound (FM-DA11) was adjusted so that the content of the modified silicone compound was the amount shown in Table 1.
Properties of the obtained polyester composition, polyester fiber and fabric are shown in Table 1.

[Reference Example 10]
In Reference Example 1, the modified silicone compound was changed to a modified silicone compound having a monofunctional carboxylic acid group at the end of the molecular chain (manufactured by Shin-Etsu Chemical Co., Ltd., trade name: X22-3710), and its content was 10% by weight. The same operation as in Reference Example 1 was repeated except that the addition amount was changed so that
Properties of the obtained polyester composition, polyester fiber and fabric are shown in Table 1.

[Reference Example 11]
In Reference Example 1, the modified silicone compound was changed to a modified silicone compound having a bifunctional carboxylic acid at both ends of the molecule of the molecular chain (manufactured by Shin-Etsu Chemical Co., Ltd., trade name: X22-162C), and its content was 10 wt. The same operation as in Reference Example 1 was repeated except that the addition amount was changed to be%.

[Reference Example 4 and Reference 5]
In Reference Example 2, the same operation as in Example 2 was repeated except that the intrinsic viscosity of the polymer was 0.672 dl / g and 0.615 dl / g.

[Reference Example 6]
In Reference Example 2, modified silicone compound having an average molecular weight of 5000 manufactured by Chisso Corporation, trade name: FM-DA21 (shown by general formula (1), X is a hydroxyl group, R _{1 to} R ₃ are methyl groups, R ₄ is a trimethylene group, R ₅ and R ₇ are methylene groups, R ₆ is an ethyl group, n = about 63 compound: manufactured by Chisso Corp., average molecular weight 5,000)) Reference Example The same operation as 2 was repeated.

[Reference Example 7]
In Reference Example 2, the same operation as in Reference Example 2 was repeated except that the amount of the modified silicone compound added was 5 parts by weight.

[Reference Example 12]
In Reference Example 2, the same operation as in Reference Example 2 was repeated except that the intrinsic viscosity of the polymer was 0.602 dl / g.

[Reference Example 13]
A reactor is charged with 100 parts by weight of dimethyl terephthalate, 60 parts by weight of ethylene glycol, and 0.031 part of manganese acetate tetrahydrate, and the temperature is raised from 140 ° C. to 240 ° C. over 3 hours in a nitrogen gas atmosphere. The transesterification was carried out while distilling methanol out of the system. After the transesterification reaction is completed, 0.024 part of phosphoric acid as a stabilizer and 0.04 part of antimony trioxide as a polycondensation reaction catalyst are added, then the temperature is raised to 285 ° C., and the polycondensation reaction is performed under reduced pressure. To obtain a polyester composition. When the intrinsic viscosity of this polyester composition was measured, it was 0.641 dl / g. After the polyester composition was dried, it was melted at 285 ° C. in a single-screw extruder, and a spin extrusion temperature of 290 ° C. from a spinneret having 24 round hole extrusion nozzle holes with a hole diameter of 0.3 mmφ and a land length of 0.6 mm. Were discharged under the condition of a total discharge amount of 24 g / min and taken up at a speed of 1000 m / min to obtain an undrawn yarn. The obtained undrawn yarn was drawn 3.3 times at 80 ° C. and heat-treated at 180 ° C. to obtain 81.1 dtex / 24 filament polyester fiber.

[Reference Example 14]
In Reference Example 13, the same operation as in Reference Example 13 was repeated except that the intrinsic viscosity of the polymer was 0.605 dl / g.

[Example 1]
100 parts by weight of dimethyl terephthalate, 60 parts by weight of ethylene glycol, ester-reactive silicone compound (shown by general formula (1), X is a hydroxyl group, R _{1 to} R ₃ are methyl groups, R ₄ is a trimethylene group, R ₅ and Compound in which R ₇ is a methylene group, R ₆ is an ethyl group, and n = 9: manufactured by Chisso Corporation, trade name: FM-DA11, average molecular weight: 1000) 10 parts by weight, manganese acetate tetrahydrate 0.031 parts by weight Was heated to 140 ° C. to 240 ° C. over 3 hours under a nitrogen gas atmosphere, and a transesterification reaction was carried out while removing methanol to be purified out of the system. After the transesterification reaction is completed, 0.024 parts by weight of phosphoric acid as a stabilizer and 0.04 parts by weight of antimony trioxide as a polycondensation reaction catalyst are added, and then the temperature is raised to 285 ° C. A condensation reaction was performed to obtain a silicone-containing polyester. The polyester obtained had an intrinsic viscosity of 0.65 (35 ° C. in orthochlorophenol).

  This polyester was dried to a moisture content of 70 ppm or less, then melted in an extruder at a melting temperature of 300 ° C., and polymerized without using an ester-reactive silicone compound, an intrinsic viscosity of 0.64 (35 ° C., orthochloro Polyethylene terephthalate (in phenol) was dried to a similar moisture content, and then melted separately in a separate extruder at a melting temperature of 285 ° C. Each molten polymer is made of polyester containing ester-reactive silicone as a sheath component, using a core-sheath type composite fiber die having 36 round discharge holes, and a sheath / core weight ratio of 25. After being discharged at a spinning speed of 1000 m / min, the film was drawn at a preheating temperature of 90 ° C., a heat setting temperature of 120 ° C. and a draw ratio of 3.7 times without being wound up, and 3700 m / min. The core-sheath composite polyester water-repellent fiber was obtained. The obtained composite fiber had a fineness of 56 dtex, a single yarn fineness of 1.6 dtex, a strength of 4.2 cN / dtex, and an elongation of 30%.

A high-density plain woven fabric having a warp cover factor of 887, a weft cover factor of 846, and a total cover factor CF of 1733 was woven using the above composite fiber as the weft. The woven fabric was scoured, relaxed, dried, preset, dyed and dried according to a conventional method, and then final set at a temperature of 180 ° C. for 30 seconds. The obtained woven fabric was a high density plain woven fabric having a warp cover factor of 975, a weft cover factor of 1003, and a total weft cover factor CF of 1978 / 2.54.
The evaluation result of this woven fabric is as shown in Table 2, and it was a thin woven fabric with no tear slip and excellent tear strength. Further, the fabric was a flat surface touch (3rd grade).
Next, when the sports fabric (windbreaker) was obtained using the fabric, the sports fabric was excellent in tearing strength, and no seam slip occurred. Furthermore, it also had excellent water repellency.

[Example 2]
In Example 1, a core / sheath composite polyester water-repellent fiber having a fineness of 56 dtex was obtained in the same manner except that the weight ratio of the sheath / core was 30/70.
Weaving and dyeing were performed in the same manner as in Example 1 using the composite yarn. The obtained woven fabric was a high-density plain woven fabric having a warp cover factor of 1005, a weft cover factor of 991, and a total cover factor CF of warp of 1996.
The evaluation result of this woven fabric is as shown in Table 2, and it was a thin woven fabric with no tear slip and excellent tear strength. Further, the fabric was a flat surface touch (3rd grade).

Example 3
In Example 1, a core / sheath composite polyester water-repellent fiber having a fineness of 56 dtex was obtained in the same manner except that the weight ratio of the sheath / core was 50/50.
Weaving and dyeing were performed in the same manner as in Example 1 using the composite yarn. The obtained woven fabric was a high-density plain woven fabric having a warp cover factor of 1020, a weft cover factor of 988, and a total cover factor CF of warp of 2008.
The evaluation result of this woven fabric is as shown in Table 1, and it was a thin woven fabric with no tear slip and excellent tear strength. Further, the fabric was a flat surface touch (3rd grade).

[Comparative Example 1]
Weaving and dyeing were performed in the same manner as in Example 1 using ordinary polyethylene terephthalate multifilament 56 dtex / 36 filament yarn (containing no modified silicone compound). The obtained woven fabric was a high-density plain woven fabric having a warp cover factor of 1000, a weft cover factor of 976, and a total cover factor CF of warp of 1976.
The evaluation result of this woven fabric is as shown in Table 2, and it was a thin woven fabric with low tear strength, although no stitch slip occurred. Further, the fabric was a flat surface touch (3rd grade).

Example 4
Using the composite yarn used in Example 1 for the weft, a warp cover factor of 682, a weft cover factor of 631, and a total cover factor CF of the weft of 1313 was woven.
This fabric was dyed and finished in the same manner as in Example 1. The obtained woven fabric was a medium density plain woven fabric having a warp cover factor of 748, a weft cover factor of 713, and a total weft cover factor of 1461.
The evaluation results of this woven fabric are as shown in Table 2. It was a thin woven fabric with high tear strength but poor seam slip and poor practicality. Further, the fabric was a flat surface touch (3rd grade).

  ADVANTAGE OF THE INVENTION According to this invention, the thin fabric and textiles which are excellent in tearing strength, and also have the outstanding water repellency, exhibiting a flat surface touch are provided, The industrial value is very large.

Claims (10)

It is a thin fabric with a basis weight of 100 g / m ² or less, comprising polyester fiber A containing polyester containing 2.0 to 20.0% by weight of a modified silicone compound represented by the following general formula (1) based on the polymer weight A thin fabric with excellent tearing strength.

[In the above formula (1), R _1, R _{2 and} R ₃ may be the same or different, and a part or all of them may be substituted with a halogen atom, an alkyl group having 18 or less carbon atoms, an alkenyl group, Represents an aryl group, an aralkyl group or an alkylaryl group; R ₄ , R ₅ and R ₇ represent the same or different alkylene group having 10 or less carbon atoms, an arylene group, an aralkylene group or an alkylarylene group. R ₆ represents an alkyl group having 10 or less carbon atoms, an alkenyl group, an aryl group, an aralkyl group or an alkylaryl group, X is at least one group selected from the group consisting of a carboxyl group and a hydroxyl group, and n is 1-100. ]   The thin woven fabric excellent in tear strength according to claim 1, wherein the tear strength is 800 cN or more.   The thin woven fabric excellent in tearing strength according to claim 1 or 2, wherein the polyester fiber A is a core-sheath type composite fiber in which the polyester containing a modified silicone compound is arranged in a sheath part.   The thin woven fabric excellent in tearing strength according to claim 3, wherein the core-sheath composite fiber has a core / sheath weight ratio in a range of 30/70 to 90/10.   The thin woven fabric excellent in tearing strength according to any one of claims 1 to 4, wherein the polyester fiber A has a total fineness of 70 dtex or less.   The thin woven fabric excellent in tearing strength according to any one of claims 1 to 5, wherein the polyester fiber A is a false twist crimped yarn.   The thin woven fabric excellent in tearing strength according to any one of claims 1 to 6, wherein the woven fabric is composed only of the polyester fiber A. The thin woven fabric excellent in tear strength according to any one of claims 1 to 7, wherein the cover factor CF defined by the following formula is 1500 or more.
CF = (DWp / 1.1) ^1/2 × MWp + (DWf / 1.1) ^1/2 × MWf
However, DWp is the total warp fineness (dtex), MWp is the warp weave density (main / 2.54 cm), DWf is the total weft fineness (dtex), and MWf is the weft weave density (main / 2.54 cm).   The thin ground fabric excellent in tearing strength according to any one of claims 1 to 8, wherein the fabric surface is calendered.   A textile product selected from the group consisting of sports apparel, fashion apparel, uniform apparel, tent materials, civil engineering materials, sailcloths, and parachute materials, using the fabric according to any one of claims 1 to 9. .