JP3221634B2 - Base fabric for embroidery race and method of manufacturing embroidery race - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an embroidery base fabric and a method of manufacturing an embroidery race using the base fabric.

[0002]

2. Description of the Related Art Conventionally, embroidery races are made of silk, cotton, hemp,
After embroidering with a thread such as rayon, it was dissolved and removed with an alkaline aqueous solution, leaving only the embroidered portion. Although this method is an efficient method for manufacturing a lath, it is susceptible to changes in temperature and humidity because a very thin cloth is used as a base cloth. Both require strict temperature and humidity control. In particular, since it is preferable to maintain the temperature and humidity at a relatively high temperature and high humidity, there is a problem that not only the equipment cost but also the operation cost are high. On the other hand, a base fabric made of water-soluble polyvinyl alcohol fiber is also used.
Fibers are expensive, have low elongation, tend to cause problems such as yarn breakage during weaving and knitting operations, and have a strong odor of acetic acid, which is problematic in the workplace environment.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned disadvantages in processing and to provide a base cloth for providing an embroidery race at a low cost.

[0004]

Means for Solving the Problems The present inventors have assiduously studied to obtain the above-mentioned base cloth, and have reached the present invention. That is, the present invention relates to (a) the following formula (I)

Embedded image (Wherein, Ar represents a trivalent aromatic group and M represents a metal atom or a phosphonium group). (B) a dicarboxylic acid unit partially containing a dicarboxylic acid unit represented by the following formula (II) − A diol unit represented by O- (R ↑ 1-O) m- (II) (wherein Rｍ1 is an alkylene group and m is a number of 10 to 100); and (c) the following formula: (III)

Embedded image (Wherein R ↑ 2 is an alkylene group, and R ↑ 3 is a C1-C1 group.
A hydrocarbon group of 8; n is a number of 10 to 100; and x and y each represent 0 or 1), and a side chain unit represented by the following formula (I): 0.5 to 10 mol% of the total acid component constituting the polyester, and the diol unit represented by the formula (II) and the side chain unit represented by the formula (III) are copolymerized. 1 to 49% by weight based on the weight of the polymerized polyester, and the total content of the diol unit represented by the formula (II) and the side chain unit represented by the formula (III) is An embroidery base fabric made of a copolymerized polyester in an amount of 2 to 50% by weight based on the weight, and a method of manufacturing an embroidery race using the base fabric.

First, the copolymerized polyester will be described. In the present invention, the dicarboxylic acid unit constituting the above-mentioned copolymerized polyester is represented by the above formula (I)
It is necessary that the dicarboxylic acid unit represented by the following formula [hereinafter referred to as dicarboxylic acid unit (I)] is contained at a ratio of 0.5 to 10 mol% of all acid components constituting the copolymerized polyester. It is preferably contained in an amount of 5 to 8 mol%, particularly preferably 1 to 7 mol%. When the dicarboxylic acid unit (I) is less than 0.5 mol%, the alkali solubility of the copolymerized polyester becomes extremely poor, so that the effect as a base fabric is not exhibited. On the other hand, if it exceeds 10 mol%, viscosity increases during the polycondensation reaction for producing the copolymerized polyester due to the ionic interaction of the metal sulfonate component, and the viscosity increases until the copolymerized polyester has a desired intrinsic viscosity. It becomes difficult to continue the condensation reaction.

In the dicarboxylic acid unit (I), Ar is a trivalent aromatic group, M is a metal atom or a phosphonium group, and the group Ar is a 1,3,5-benzenetriyl group; , 3-benzenetriyl group, 1,2,4
A benzenetriyl group such as a benzenetriyl group,
3,6-naphthalenetriyl group, 1,3,7-naphthalenetriyl group, 1,4,5-naphthalenetriyl group,
Examples thereof include naphthalenetriyl groups such as 1,4,6-naphthalenetriyl group. Examples of the metal atom include alkali metal atoms such as sodium, potassium, and lithium. Examples of the phosphonium group include an alkylphosphonium group such as a tetra-n-butylphosphonium group and a butyltriphenylphosphonium group. The copolymerized polyester may have only one kind of dicarboxylic acid unit (I) or may have two or more kinds of dicarboxylic acid units (I).

The dicarboxylic acid units other than the dicarboxylic acid unit (I) constituting the copolymerized polyester include terephthalic acid, isophthalic acid, 1,4-naphthalenedicarboxylic acid, 1,5-naphthalenedicarboxylic acid, and 2,5-naphthalenedicarboxylic acid. Acid, 4,4'-biphenyldicarboxylic acid, 3,3'-biphenyldicarboxylic acid, 4,4'-diphenyletherdicarboxylic acid, 4,4'-diphenylmethanedicarboxylic acid, 4,4'-diphenylisopropylidenedicarboxylic acid Acid, 1,2-diphenoxyethane-
4 ', 4 "-dicarboxylic acid, 2,5-anthracene dicarboxylic acid, 2,6-anthracene dicarboxylic acid, 2,5
-Aromatic dicarboxylic acids such as pyridine dicarboxylic acid; β-
Aromatic hydroxycarboxylic acids such as hydroxyethoxybenzoic acid and p-oxybenzoic acid; and aromatic dicarboxylic acid units derived from their ester-forming derivatives can be mentioned, and these aromatic dicarboxylic acid units are of one type. Only or two or more types may be included.

Along with the aromatic dicarboxylic acid unit described above,
Aliphatic dicarboxylic acids such as adipic acid, azelaic acid and sebacic acid; may contain units derived from an alicyclic dicarboxylic acid such as cyclohexanedicarboxylic acid or an ester-forming derivative thereof, but constitute a copolymerized polyester. It is desirable that at least 70 mol% of the total acid component units be composed of aromatic dicarboxylic acid units, especially terephthalic acid units.

In the present invention, the copolymer polyester is formed by adding a diol unit represented by the above formula (II) [hereinafter referred to as a diol unit (II)] to 1 to 1 based on the weight of the copolymer polyester. It is necessary to contain 49% by weight. When the proportion of the diol unit (II) is less than 1% by weight, the rate of alkali weight loss during alkali treatment of the copolymerized polyester becomes insufficient. On the other hand, if it exceeds 49% by weight, the intrinsic viscosity of the polyester becomes small and spinning becomes difficult.

In the diol unit (II), R ↑ 1 is preferably an alkylene group having 1 to 4 carbon atoms, more preferably an ethylene group or a propylene group.
It is particularly preferable that # 1 is an ethylene group from the viewpoint of alkali solubility and the like. In the diol unit (II), an ethylene group and a propylene group may be present in the same molecule. In the diol unit (II), m indicating the degree of polymerization of the oxyalkylene unit is a number in the range of 10 to 100, and m is preferably a number in the range of 20 to 80.
In the diol unit (II), if m is less than 10, the melting point of the copolymerized polyester does not decrease. On the other hand, if it exceeds 100, the decrease in the melting point does not increase so much, but rather the coloring easily occurs. Specific examples of the diol unit (II) include units derived from polyoxyethylene glycol, polyoxypropylene glycol, polyoxyethylene / polyoxypropylene glycol, and the like.
The copolymer polyester may contain only one or more diol units (II).

The copolymerized polyester preferably contains other diol units other than the above-mentioned diol unit (II), and the other diol unit is ethylene glycol.
Propylene glycol, trimethylene glycol,
Tetramethylene glycol, pentamethylene glycol
, Hexamethylene glycol, nonamethylene glycol
Alicyclic diols such as cyclohexane dimethanol, aliphatic diols such as cyclohexyldimethanol, 3-methylpentane-1,5-diol, 2-methyloctane-1,8-diol and diethylene glycol. And units derived from diols and the like. These diol units may be contained alone or in combination of two or more. From the viewpoint of fiber-forming properties in producing a conjugate fiber, at least 70 mol% of the other diol units is ethylene glycol, trimethylene glycol, tetramethylene glycol, pentamethylene glycol. And a unit derived from a linear alkylene glycol having 2 to 6 carbon atoms, such as hexamethylene glycol.

In the present invention, the copolymerized polyester further comprises a side chain unit represented by the above formula (III) [hereinafter referred to as a side chain unit (III)] in an amount of 1 to 3 based on the weight of the copolymerized polyester. It is necessary to contain 49% by weight. When the proportion of the side chain unit (III) is less than 1% by weight, the rate of alkali weight loss of the copolymerized polyester becomes insufficient. On the other hand, if it exceeds 49% by weight, the intrinsic viscosity of the polyester becomes small and spinning becomes difficult.

The side chain unit (III) is represented by the following formula (IV)

[0014]

Embedded image [Wherein, D is a group capable of reacting with a dicarboxylic acid component or a diol component to introduce a side chain unit (III) represented by the above formula (III) into the main chain of the copolymerized polyester; R ↑
2, R ↑ 3 and n are the same as those described above] can be introduced into the copolymerized polyester by reacting the compound during the production of the copolymerized polyester.

In the compound represented by the above formula (IV),
Examples of the ester-forming group D include, for example,

[0016]

Embedded image A glycidyl group represented by

[0017]

Embedded image 2,3-dihydroxypropyl group and the like.

In the side chain unit (III), R ↑ 2 is preferably an alkylene group having 1 to 4 carbon atoms, more preferably an ethylene group or a propylene group, and particularly preferably an ethylene group. Specific examples of R の 3 include methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, tert-butyl, n-pentyl, n-octyl, 2-ethylhexyl, n-dodecyl, and n-dodecyl. Alkyl groups such as stearyl; cycloalkyl groups having 3 to 18 carbon atoms such as cyclohexyl; and aryl groups having 6 to 18 carbon atoms such as phenyl and nonylphenyl.

In the side chain unit (III), an ethylene group and a propylene group may be present in the same molecule. The side chain unit (II
In I), n representing the degree of polymerization of the oxyalkylene unit is a number in the range of 10 to 100, and n is preferably in the range of 20 to 80. When n is less than 10, the alkali-soluble property of the copolymerized polyester is insufficient. On the other hand, when it exceeds 100, the effect is saturated, and conversely, the copolymerized polyester tends to be colored.

Specific examples of the side chain unit (III) include polyoxyethylene glycol-methyl-glycidyl ether and polyoxyethylene glycol-methyl-2,3-
Dihydroxypropyl ether, polyoxyethylene glycol-ethyl-glycidyl ether, polyoxyethylene glycol-ethyl-2,3-dihydroxypropyl ether, polyoxyethylene glycol-n-propyl-glycidyl ether -Tel, polyoxyethylene glycol-n-propyl-2,3-dihydroxypropyl ether, polyoxyethylene glycol-t-butyl-glycidyl ether, polyoxyethylene glycol-t-butyl- 2,3-dihydroxypropyl ether, polyoxyethylene glycol-n-octyl-glycidyl ether, polyoxyethylene glycol-n
Octyl-2,3-dihydroxypropyl ether,
Polyoxyethylene glycol-2-ethylhexyl-
Glycidyl ether, polyoxyethylene glycol
2-ethylhexyl-2,3-dihydroxypropyl ether, polyoxyethylene glycol-n-dodecyl-glycidyl ether, polyoxyethylene glycol-n-dodecyl-2,3-dihydroxypropyl ether, Polyoxyethylene glycol-n-stearyl-
Glycidyl ether, polyoxyethylene glycol
n-stearyl-2,3-dihydroxypropyl ether, polyoxyethyleneglycol-phenyl-glycidylether, polyoxyethyleneglycol-phenyl-2,3-dihydroxypropylether, polyoxyethyleneglycol -Yl-nonylphenyl-glycidyl ether, polyoxyethylene glycol-nonylphenyl-2,3-dihydroxypropyl ether, polyoxyethylene glycol-cycloalkylhexyl-glycidyl ether, polyoxyethylene glycol- Cyclohexyl-2,3-dihydroxypropyl ether, methyl-glycidyl ether of polyoxyethylene / polyoxypropylene glycol copolymer, polyoxyethylene /
Methyl-polyoxypropylene glycol copolymer
2,3-dihydroxypropyl ether, n of polyoxyethylene / polyoxypropylene glycol copolymer
-Propyl-glycidyl ether, and units derived from n-propyl-2,3-dihydroxypropyl ether of a polyoxyethylene / polyoxypropylene glycol copolymer, and the like. The copolymerized polyester may be contained alone or in combination of two or more.

In the copolymerized polyester, the total content of the diol unit (II) and the side chain unit (III) needs to be 2 to 50% by weight based on the weight of the copolymerized polyester. Preferably, it is 5 to 30% by weight. Diol unit (II) and side chain unit (III)
When the total content is less than 2% by weight, the alkali-solubility of the copolymerized polyester is insufficient, while when it exceeds 50% by weight, the intrinsic viscosity of the polyester becomes small and spinning becomes difficult.

In addition to the above-mentioned units, the copolymerized polyesters include, for example, triols such as glycerin and trimethylolpropane; tetraols such as pentaerythritol;
Melt spinning and melt molding of polyester from copolymerized units derived from multifunctional components such as tricarboxylic acids such as trimellitic acid and trimesic acid, and polycarboxylic acids such as tricarboxylic acids such as pyromellitic acid. It may be contained in a small amount within the proper range.

In addition to the above-mentioned units, copolymerized polyesters include, for example, triols such as glycerin and trimethylolpropane; tetraols such as pentaerythritol;
Melt spinning and melt molding of polyester from copolymerized units derived from multifunctional components such as tricarboxylic acids such as trimellitic acid and trimesic acid, and polycarboxylic acids such as tricarboxylic acids such as pyromellitic acid. It may be contained in a small amount within the proper range.

The copolymerized polyester has an intrinsic viscosity of 0.5 dl / g or more, preferably 0.55 dl / g, measured at 30 ° C. in a mixed solvent (equal weight) of phenol and tetrachloroethane.
It is preferably from 1.5 to 1.5 dl / g, particularly from 0.6 to 1.0 dl / g, from the viewpoint of processability during spinning.

The copolyester is a dicarboxylic acid component capable of introducing each of the above units into the copolyester,
Diol component, side chain unit (III) represented by the above formula (IV)
It can be produced by conducting a polymerization reaction by a conventional method using a compound for use. For example, in the first step, first, an esterification reaction or a transesterification reaction is performed using these raw materials to produce a low polymer, and then, in the second step, the low polymer is heated under reduced pressure in the presence of a polymerization catalyst. Can be produced by polycondensation until the desired degree of polymerization is reached, but of course the invention is not limited to this method. At that time, known esterification catalysts and ester exchange reaction catalysts used in the production of polyester in the esterification or transesterification step before the polycondensation reaction can be used as necessary.

The above copolymerized polyester has a melting point of 200 ° C.
As described above, the heat of crystal fusion is preferably 2.0 cal / g or more, and the glass transition temperature is preferably 30 ° C. or more. 200 melting point
When the glass transition temperature is less than 30 ° C, the processability and processability in weaving and knitting the copolymerized polyester fiber to form a base fabric are poor, and the heat of crystal fusion is 2 ° C. If it is less than 0.0 cal / g, the fiber properties are poor, especially the fiber strength is low, and the workability of weaving and knitting is poor.

The above-mentioned copolymerized polyester can be spun and drawn into fibers by a conventional method. Of these, undrawn yarns having a birefringence of at least 0.07 and a shrinkage in boiling water of at most 10% obtained by high-speed spinning are preferred. This is because the low shrinkage yarn obtained by high-speed spinning has a low degree of crystallinity at the center of the fiber, so that the dissolution rate in the latter half of the alkali dissolution treatment increases and the treatment time is shortened. In addition, the higher the spinning draft of the spun fiber, the better. Even if the spinning speed is the same, the larger the spinning draft, the higher the orientation and crystallinity of the fiber surface layer, and the higher the ratio of the low crystallinity portion in the center of the fiber. This is because the size becomes large and the processing time is shortened. The smaller the fineness of the yarn is, the easier it is to dissolve in alkali. However, if the spinning draft is increased to increase the alkali dissolution rate, the spinning becomes unstable. Therefore, it is necessary to consider the fineness and spinning draft.

Further, a spinning direct drawing method is also suitable. In the case of winding after spinning and subsequent stretching, agglomeration may occur between the single fibers and poor unwinding properties may occur, but such a trouble does not occur in the direct spinning and drawing method.

The structure of the base fabric made of the copolymerized polyester fiber may be any of a woven fabric, a knitted fabric, and a nonwoven fabric.
A plain weave fabric is preferred from the viewpoint of ease of handling. Further, the copolyester fiber may be any of a multifilament yarn, a monofilament yarn, a spun yarn, a yarn obtained by splitting or slitting a film, and a mixture thereof.

The above-mentioned copolyester fiber is easily dissolved in an aqueous alkali solution, and its dissolution rate is much faster than that of a conventional alkali-friendly polyester fiber. As described above, even when a polymer which is slightly weak to alkali is used, the alkali treatment can be performed in a short time so that the polymer is not deteriorated by the alkali.

The concentration of the alkali solution for dissolving the above-mentioned copolymerized polyester fiber varies depending on the type of the embroidery yarn, but is usually 0.1 to 10% by weight, and the solvent is water or alcohol.
And mixtures thereof. Although the alkali treatment temperature depends on the concentration, it is preferably 60 ° C. or higher and the boiling point of the solvent or lower. To promote dissolution, the system can be pressurized and treated at a temperature above the boiling point of the solvent at atmospheric pressure.

As the alkali, a strong alkali such as sodium hydroxide and potassium hydroxide, a weak alkali such as sodium carbonate and potassium carbonate, or a mixture thereof can be used. For example, in the case where cotton, hemp, nylon, acrylic, or the like is used as the alkali-insoluble fiber which is a thread for embroidery lath, when sodium hydroxide is used as the alkali, the concentration is about 2 to 10% by weight. This is preferable because the swelling of the soluble fiber is small. sodium carbonate,
When a weak alkali such as potassium carbonate is used, it is preferable that the molar concentration is approximately the same as that when sodium hydroxide is used. When polyester fibers are used as the hardly soluble alkali fibers, the concentration of the sodium hydroxide solution is preferably 0.1 to 5% by weight. further,
When rayon is used as the alkali-insoluble fiber, the ray
It is preferable to use the above-mentioned weak alkaline solution in order to suppress the swelling of Yeon.

In order to promote the alkali solubility of the copolymerized polyester fiber, amines such as pyridine, aniline, cyclohexylamine, and trialkylamine can be added. The addition of amines is particularly effective when fibers other than polyester fibers are used as the hardly-soluble alkali fibers.

[0034]

EXAMPLES The present invention will be described below in detail with reference to examples, but the present invention is not limited to these examples. In addition, each physical property in an Example was measured by the following method. (1) Melting point (° C.), heat of crystal fusion (cal / g), and glass transition temperature (° C.) of the copolymerized polyester The temperature was raised at a rate of 10 ° C./° C. using a differential scanning calorimeter (DCS).
Measured in minutes. (2) Strength (g / d) and Elongation (%) of Copolyester Fiber Measured according to JIS L1013. (3) Birefringence of Copolyester Fiber Measured by a conventional method using a polarizing microscope. (4) Shrinkage of boiling water of copolymerized polyester (%) A fiber having a length of 50 cm is collected under a load of 50 mg / d, and then boiled at 98 ° C. under a load of 0.5 mg / d. Immerse in water for 30 minutes and then again
The length L (cm) is measured by applying a load of mg / d,
The boiling water shrinkage was determined by the following equation. Boiling water shrinkage (%) = (50−L) / 50 × 100

Examples 1 to 5 Terephthalic acid and ethylene glycol were charged into an esterification reactor and subjected to an esterification reaction at 230 ° C. under a pressure of 2.5 kg / cm @ 2 for 2 hours. Next, 5-sodium sulfoisophthalic acid was added to the reaction product in a concentration of 2.5 mol% based on the total acid components to cause a reaction, and the reaction product was transferred to a polycondensation apparatus heated to 230 ° C. in advance. , Polyethylene glycol having a molecular weight of 2000 and the following formula (V)

[0036]

Embedded image The polyoxyethylene glycol glycidyl ether represented by the following formula (1) was added in the amount shown in Table 1, and 5% by weight of 1,3 based on the total amount of polyethylene glycol and polyoxyethylene glycol glycidyl ether was added. , 5-Tris (4-t-butyl-3-hydroxy-2,6-dimethylbenzyl) -1,3,5-triazine-2,4,6-
Antimony trioxide was added to (1H, 3H, 5H) trione (Cyanox 1790, manufactured by American Cyanamid Co., Ltd.) and polymer to adjust the polycondensation reaction system. While raising the temperature of the polycondensation reaction system from 230 ° C. to 280 ° C. over 45 minutes, the pressure was gradually reduced to 0.1 mmHg. Thereafter, at 280 ° C., the melt viscosity of the system was reduced to an intrinsic viscosity of 0.70 dl / g. The polycondensation reaction was continued until the melt viscosity at 280 ° C. of terephthalate was substantially the same, to produce a copolymerized polyester.

The obtained copolyester was formed into chips, melt-spun, and wound at a speed of 1000 m / min.
Then, it is stretched 3.5 times by a conventional method to obtain 75 denier / 2.
A 4-filament drawn yarn was obtained. The strength of the drawn yarn is 3.
0 g / d, elongation was 40%, and shrinkage in boiling water was 7%. This fiber is used for a warp density of 80 yarns / 25 mm and a weft density of 6
After weaving in a plain weave at 5 yarns / 25 mm, embroidery was performed with cotton thread, and dissolution treatment was performed with the following processing solution.

Sodium hydroxide 4% by weight Ethylene glycol 1% by weight Sodium terephthalate Saturated water Residual bath ratio 2000: 1 Temperature 95 ° C. Treatment time 5 to 10 minutes almost completely dissolves the base fabric (plain weave), good Embroidery race was obtained.

[0039]

[Table 1]

Comparative Example 1 Example 1 was conducted using polyethylene terephthalate fiber (75 denier / 24 filament) produced by a conventional method.
A plain weave having the same structure as that described above was prepared and embroidered with cotton thread. Next, the dissolving treatment was performed with the above-mentioned treating solution, but it took 35 hours for the base cloth to completely dissolve, and the embroidered cotton thread was significantly deteriorated.

Comparative Examples 2 to 4 Copolymerized polyesters having the compositions shown in Table 2 were spun and woven in the same manner as in Example 1, and the woven fabric was embroidered with cotton threads. Then, the dissolving treatment was performed with the above-mentioned treating solution. However, it took a long time for the base cloth to completely dissolve, and as a result, the cotton thread as the embroidery thread was deteriorated.

[0042]

[Table 2]

Example 6 Instead of polyoxyethylene glycol glycidyl ether, polyoxyethylene glycol-methyl-2,3-dihydroxypropyl ether represented by the following formula (VI) was used.
Copolymerized polyester was polymerized, spun and woven in the same manner as in Example 1 except for using tellurium, and the woven fabric was embroidered with cotton thread. Then, when the dissolution treatment was performed with the above treatment solution, the base fabric was completely dissolved in a short time, and no deterioration of the cotton thread was observed.

[0044]

Embedded image

Example 7 Copolymerized polyester was polymerized in the same manner as in Example 1 except that polyethylene glycol having a molecular weight of 900 was used in place of polyethylene glycol having a molecular weight of 2,000. Embroidered with cotton thread. Then, when the dissolution treatment was performed with the above treatment solution, the base fabric was completely dissolved in a short time, and no deterioration of the cotton thread was observed.

Comparative Examples 5 to 7 Copolymerized polyesters having the compositions shown in Table 2 were polymerized, and spinning was carried out in the same manner as in Example 1. Dropping occurred and a satisfactory fiber could not be obtained.

Example 8 A plain weave was produced in the same manner as in Example 1, and a mixed spun yarn of 50% rayon and 50% polyester was embroidered on the woven fabric as an embroidery thread. Then, when a dissolution treatment was performed using the following treatment solution, the base cloth was completely dissolved in 20 minutes, and deterioration of the embroidery thread was not observed.

Sodium hydroxide 2% by weight Sodium sulfate 25% by weight Ethylene glycol 1% by weight Sodium terephthalate Saturated water Residual bath ratio 2000: 1 Temperature 100 ° C.

Comparative Example 8 A woven fabric was prepared in the same manner as in Comparative Example 1, and a mixed yarn of 50% rayon and 50% polyester was embroidered on the woven fabric as an embroidery thread. Then, the dissolution treatment was performed using the above treatment solution, but it took 45 hours for the base cloth to completely dissolve,
The polyester in the embroidery thread was completely dissolved, and the strength of the rayon was extremely reduced, and the rayon could not be used as a race.

[0050]

According to the present invention, an embroidery lath having good workability and low cost can be provided by using a fiber made of a specific copolymerized polyester as the embroidery lath base fabric.

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) D06Q 1/00-1/14 D01F 6/00-8/18 D06M 10/00-11/84

Claims (2)

(57) [Claims] (A) The following formula (I): (Wherein, Ar represents a trivalent aromatic group and M represents a metal atom or a phosphonium group). (B) a dicarboxylic acid unit partially containing a dicarboxylic acid unit represented by the following formula (II) − A diol unit represented by O- (R ↑ 1-O) m- (II) (wherein Rｍ1 is an alkylene group and m is a number of 10 to 100); and (c) the following formula: (III) (Wherein R ↑ 2 is an alkylene group, and R ↑ 3 is a C1-C1 group.
A hydrocarbon group of 8; n is a number of 10 to 100; and x and y each represent 0 or 1), and a side chain unit represented by the following formula (I): 0.5 to 10 mol% of the total acid component constituting the polyester, and the diol unit represented by the formula (II) and the side chain unit represented by the formula (III) are copolymerized. 1 to 49% by weight based on the weight of the polymerized polyester, and the total content of the diol unit represented by the formula (II) and the side chain unit represented by the formula (III) is An embroidery base fabric comprising a copolymerized polyester in an amount of 2 to 50% by weight based on the weight. 2. A method for producing an embroidery lath, comprising the steps of: embroidering an alkali-insoluble fiber on a base cloth according to claim 1; and dissolving and removing the base cloth with an alkali solution.