KR101292081B1 - Polyester fiber composition having excellent tactility and drape, and preparing thereof - Google Patents

Abstract

The present invention relates to a polyester filament excellent in tactile feel and drape, and more particularly, to a polyester filament, in which a terminal of a polymerization monomer is -C00H or -COOR (wherein R is C ₁ to C ₁₀₎ . Polyethylene glycol and barium sulfate are copolymerized to a polyester resin polymerized with a compound having an alkyl group or an arylalkyl group), and 0.1 to 10 parts by weight of polyethylene glycol and 0.1 to 5.0 weight of barium sulfate based on 100 parts by weight of the polyester resin. Provided is a polyester filament having excellent feel and drape, and a method for producing the same, characterized in that the addition is copolymerized.

Description

Polyester filament with excellent touch and drape and its manufacturing method {Polyester fiber composition having excellent tactility and drape, and preparing reason}

The present invention relates to a polyester filament having excellent tactile feel and drape, and a method of manufacturing the same. More specifically, the present invention relates to a soft filament having a soft touch similar to rayon and a drape superior to a general polyester. It relates to a polyester filament having a characteristic and a method of manufacturing the same.

Typical rayon fiber is pulp made of pure fiber by chemically treating wood or cotton waste with appropriate chemical method, and then chemically dissolving it and then solidifying it into a fibrous form. The rayon is excellent in soft touch, drape, hygroscopicity, color development, etc., but the major drawbacks of rayon are that the water resistance is largely inferior, and the elasticity is less likely to cause wrinkles as a garment material. In addition, it is difficult to secure uniformity of strength, shape stability and quality, and has a disadvantage of high price.

On the contrary, polyester synthetic fiber has low drape, soft touch, hygroscopicity, dyeing property and natural feeling, but high strength, excellent salt processability, shape stability, and low price, thus making fiber through modification of polyester resin. It is used for lining paper and curtains of men's wear.

However, in the prior art, it is a rayon-sensitive synthetic fiber that overcomes the disadvantages of synthetic fiber and rayon fiber through polyester modification, and has excellent soft touch, excellent drape, high strength and hygroscopicity, and excellent salt processability and shape stability. The technology that simultaneously implemented various functions such as low-cost features was not shown.

Korean Patent Application No. 2005-0019424 relates to a "polyester composition for producing high gloss yarns and high gloss yarns prepared therefrom", wherein the barium sulfate particles having an average particle diameter of 0.01 to 3 µm are used as dicarboxylic acid or derivatives thereof. It is characterized by providing a polyester composition for producing a high gloss yarn, and a high gloss yarn produced therefrom, characterized by containing 0.05 to 1.0 parts by weight with respect to the portion. The patent introduced a polyester having a drape property by using a master batch method by mixing barium sulfate particles and a polyester solid-state polymerization chip. However, it is difficult to improve the pack pressure during spinning and improve the glossiness of rayon due to the decrease in the dispersibility of barium sulfate in the polyester by the mas batch method. In addition, drape is improved, but rayon's soft touch and hygroscopicity are difficult to improve.

In addition, Korean Patent Application No. 2006-0129230 discloses a "release cross-sectional polyester fiber and a method for producing the same," which is a weight loss after preparing a polyester copolymer using a metal sulfoine salt and a polyoxyoxykylene ester compound. It has been introduced to form a microslit through processing to have a touch and appearance similar to rayon. However, this process is cumbersome due to the weight reduction process and forms the touch of rayon, but has a disadvantage in that the drape characteristics are insufficient. Similarly, U.S. Patent No. 4,764,426, which forms a microslit, and Japanese Patent Laid-Open No. 2001-355129, have excellent tactile improvement, but a problem of dyeing streaks occurs during fabrication due to agglomeration of metal salt compounds in the polymerization process. There is a disadvantage.

Therefore, it has been desired to develop a filament that mimics rayon sensitivity through modification of polyester to improve the disadvantages of polyester fibers.

In order to solve the above problems, an object of the present invention is to provide a polyester filament excellent in soft touch, drape, and hygroscopicity which are excellent characteristics of rayon.

Another object of the present invention is to provide a polyester filament having excellent salt processability, shape stability, strength and low cost.

In order to achieve the above object, the present invention is a polyester filament, in which a compound having a -C00H or -COOR (wherein R is an alkyl group or an arylalkyl group of C ₁ to C ₁₀ ) and the diol compound is polymerized Polyethylene glycol and barium sulfate are copolymerized to the polyester resin, and the polypropylene has excellent touch and drape property, characterized in that 0.1 to 10 parts by weight of polyethylene glycol and 0.1 to 5.0 parts by weight of barium sulfate are copolymerized with respect to 100 parts by weight of the polyester resin. To provide ester filaments.

In addition, the present invention is a compound having -C00H or -COOR (where R is a C ₁ to C ₁₀ alkyl or arylalkyl group) at the end of the polymerization monomer is terephthalic acid, isophthalic acid, dimethyl terephthalate, naphthalene dicarboxylic Provided is a polyester filament having excellent tactile feel and drape, characterized in that at least one selected from the group consisting of acid, cyclohexane dicarboxylic acid and dihydroxybenzoic acid.

In the present invention, the diol compound is selected from the group consisting of ethylene glycol, diethylene glycol, triethylene glycol, 1,4-butanediol, 1,3-propanediol, 1,6-hexanediol and cyclohexane dimethanol It provides a polyester filament excellent in feel and drape.

In another aspect, the present invention provides a polyester filament excellent in the touch and drape properties, characterized in that the molecular weight of the polyethylene glycol is 1,000 ~ 20,000.

In another aspect, the present invention provides a polyester filament having excellent touch and drape property, characterized in that the average particle diameter of the barium sulfate 0.1 ~ 5.0 parts by weight is 0.01 ~ 2.0㎛.

In another aspect, the present invention is a polyester filament excellent in touch and drape, characterized in that the barium sulfate is dispersed by slurrying at a concentration of 1.0 to 40.0 parts by weight of the barium sulfate with respect to 100 parts by weight of the solvent in a solvent using a diol compound To provide.

In addition, the present invention is a method for producing a polyester filament, a compound having a -C00H or -COOR (where R is a C ₁ to C ₁₀ alkyl or arylalkyl group) and a diol compound polymerized polyester Forming a composition in which polyethylene glycol and barium sulfate are copolymerized to the resin, wherein 0.1 to 10 parts by weight of polyethylene glycol and 0.1 to 5.0 parts by weight of barium sulfate are copolymerized based on 100 parts by weight of the polyester resin; And it provides a method for producing a polyester filament excellent in the feel and draping comprising the step of spinning, stretching and heat treatment of the composition.

In another aspect, the present invention provides a method for producing a polyester filament excellent in touch and drape characterized in that the spinning temperature is 250 to 300 ℃.

In another aspect, the present invention provides a method for producing a polyester filament excellent in touch and drape characterized by the stretching temperature is 80 to 90 ℃, the stretching ratio is 2.5 to 3.5.

In another aspect, the present invention provides a method for producing a polyester filament excellent in the touch and draping characterized in that the heat treatment temperature during the heat treatment is 130 to 140 ℃.

In addition, the present invention is a compound having -C00H or -COOR (where R is a C ₁ to C ₁₀ alkyl or arylalkyl group) at the end of the polymerization monomer is terephthalic acid, isophthalic acid, dimethyl terephthalate, naphthalene dicarboxylic Provided is a method for producing a polyester filament having excellent tactile feel and drape, characterized in that at least one selected from the group consisting of acid, cyclohexane dicarboxylic acid, and dihydroxybenzoic acid.

In the present invention, the diol compound is selected from the group consisting of ethylene glycol, diethylene glycol, triethylene glycol, 1,4-butanediol, 1,3-propanediol, 1,6-hexanediol and cyclohexane dimethanol Provided is a method for producing a polyester filament excellent in feel and drape.

In another aspect, the present invention provides a method for producing a polyester filament excellent in touch and drape, characterized in that the molecular weight of the polyethylene glycol is 1,000 ~ 20,000.

In another aspect, the present invention provides a method for producing a polyester filament excellent in touch and drape, characterized in that the average particle diameter of the barium sulfate 0.1 ~ 5.0 parts by weight is 0.01 ~ 2.0㎛.

In another aspect, the present invention is a polyester filament excellent in touch and drape, characterized in that the barium sulfate is dispersed by slurrying at a concentration of 1.0 to 40.0 parts by weight of the barium sulfate with respect to 100 parts by weight of the solvent in a solvent using a diol compound It provides a method of manufacturing.

As described above, the polyester filament of the present invention has the high strength, excellent processability and form stability, low cost, and improved hygroscopicity and dyeing property of general polyester synthetic fibers, and soft touch of rayon and excellent drape. Rayon has the effect of providing a subtle gloss inherent.

Hereinafter, the present invention will be described in detail. In describing the present invention, detailed descriptions of related well-known functions or configurations are omitted in order not to obscure the subject matter of the present invention.

The terms " about ", " substantially ", etc. used to the extent that they are used herein are intended to be taken to mean an approximation to or in the numerical value of the manufacturing and material tolerances inherent in the meanings mentioned, Accurate or absolute numbers are used to help prevent unauthorized exploitation by unauthorized intruders of the referenced disclosure.

Polyester filament according to the present invention is characterized in that the copolymerization by adding polyethylene glycol and barium sulfate particles to the polyester resin.

The polyester filament is copolymerized by adding 0.1 to 10 parts by weight of polyethylene glycol and 0.1 to 5.0 parts by weight of barium sulfate particles based on 100 parts by weight of the polyester resin, and the polyester resin is -C00H or -COOR at the end of the polymerization monomer. Wherein R is a compound having a C ₁ to C ₁₀ alkyl group or an arylalkyl group and a diol compound.

Examples of the compound having -C00H or -COOR (wherein R is a C ₁ to C ₁₀ alkyl group or arylalkyl group) at the terminal of the polymerization monomer include terephthalic acid, isophthalic acid, dimethyl terephthalate, naphthalene dicarboxylic acid, cyclo One or more compounds selected from the group consisting of hexane dicarboxylic acid and dihydroxybenzoic acid are preferred, and the diol compound is ethylene glycol, diethylene glycol, triethylene glycol, 1,4-butanediol, 1,3 -Any one or more diol compounds selected from the group consisting of propanediol, 1,6-hexanediol, cyclohexane dimethanol and the like.

The mixing ratio of the compound having a -C00H or -COOR (wherein R is a C ₁ to C ₁₀ alkyl or arylalkyl group) and the diol compound at the terminal of the polymerization monomer is polymerized in a molar ratio of 1: 1.1 to 1: 2.0. desirable. When mixed in the above ratio, high strength and shape stability are maintained in the production of filament.

In addition, the polyethylene glycol used in the present invention is represented by the following formula (1), the molecular weight is preferably 1,000 to 20,000, more preferably 4,000 to 16,000.

Where n is an integer from 20 to 500.

In addition, it is preferable that 0.1-10 weight part of polyethyleneglycol is mixed with respect to 100 weight part of polyester resins.

Polyethylene glycol used in the present invention is less than 1,000 molecular weight or less than 0.1 parts by weight of the soft touch, hygroscopicity, chlorine can not be obtained at the time of filament production, when the molecular weight exceeds 20,000 or more than 10.0 parts by weight of the polymerization reactivity is lowered And the glass transition temperature of the formed polyester polymer becomes too low, resulting in poor thermal stability.

In addition, the barium sulfate used in the present invention is 0.1 to 5.0 parts by weight of barium sulfate particles relative to 100 parts by weight of the polyester resin. In addition, the barium sulfate particles preferably have an average particle diameter of 0.01 to 2.0 µm, and more preferably 0.1 to 1.0 µm.

The barium sulfate has a high specific gravity and inert properties, and when used as a raw material of the PET polymerization process, it is well dispersed in ethylene glycol and has an advantage in use.

The barium sulfate is slurried at a concentration of 1.0 to 40.0 parts by weight of the barium sulfate with respect to 100 parts by weight of the solvent in a solvent using a diol compound participating in the polyester reaction with a polymerization monomer having -C00H or -COOR at the end as a solvent It is preferable to carry out (Slurryization), and it is more preferable to disperse | distribute at the density | concentration of 5.0-15.0 weight part.

If the amount of the barium sulfate is less than 0.1 part by weight, the drape property having the sensitivity of rayon may not be obtained, and projections on the surface of the yarn may not be properly formed, which may cause stretching irregularities and loop generation problems during spinning. When the amount of the barium sulfate is more than 5.0 parts by weight, the dispersion of barium sulfate in the polyester formed into the filament is not good, and the pack pressure rises and the yarn is broken when spinning, and the diffuse reflection of the light is caused by the generation of large projections on the surface of the yarn. Arises a problem that gloss is lowered.

In addition, when dispersed at a concentration exceeding 40.0 parts by weight in the solvent of the diol compound, it causes barium sulfate agglomeration in the polyester forming reaction, resulting in poor dispersion of barium sulfate in the polyester and causing pack pressure increase during spinning. When dispersed at a concentration of less than a part, the molar ratio of the diol compound participating in the polyester reaction with the polymerization monomer having -C00H or -COOR at the terminal exceeds 1: 2.0, which causes the occurrence of side reactions, or the preparation of polyester Excessive processes are present in the process that are present in excess to remove the diol compound.

On the other hand, the initial elastic modulus of the filament during spinning through the polyester modification is 48 ~ 68g / den almost similar to rayon, high specific gravity of 1.38 or more, which is the specific gravity of the general polyester synthetic fibers, preferably 1.38 ~ 1.52. The present invention provides a polyester synthetic fiber and at the same time introduces a hydrophilic group in the polyester molecular chain domain, thereby providing a polyester resin having hygroscopicity and dye-imparting properties to provide drape, soft touch, hygroscopicity, dyeing property, salt processability, shape stability, It is to provide a polyester synthetic fiber with excellent strength and low cost.

According to one embodiment of the present invention, a polyester having excellent tactile feel and drape is a terephthalic acid having -C00H or -COOR (where R is an alkyl group or an arylalkyl group of C ₁ to C ₁₀ ), Ethylene glycol, diethylene glycol, triethylene glycol, one or more compounds selected from the group consisting of isophthalic acid, dimethyl terephthalate, naphthalene dicarboxylic acid, cyclohexane dicarboxylic acid and dihydroxybenzoic acid One or more diol compounds selected from the group consisting of, 4-butanediol, 1,3-propanediol, 1,6-hexanediol, cyclohexane dimethanol and the like are polymerized.

The reaction ratio of the material is 1: 1.1 ~ 1: 2.0 by mixing to An ester reactant is prepared which is esterified at a temperature of 200 to 270 ° C. and a pressure of 1100 to 1350 Torr. 0.1 to 10.0 parts by weight of polyethylene glycol having a molecular weight of 1,000 to 20,000 and 1.0 to 5.0 parts by weight of barium sulfate particles having an average particle diameter of 0.1 to 2.0 μm based on 100 parts by weight of the ester reactant to 1.0 to 40.0 parts by weight of an ethylene glycol solvent. After the slurry is added at a slurry concentration (slurry), the filament may be manufactured using a polyester composition by reducing the pressure to 1.0 Torr or less at 250 to 300 ° C.

That is, polyethylene glycol and barium sulfate are copolymerized with a polyester resin obtained by polymerizing a compound having a -C00H or -COOR (wherein R is a C ₁ to C ₁₀ alkyl group or an arylalkyl group) and a diol compound at the end of the polymerization monomer, The polyester filament may be prepared by spinning, stretching and heat-treating the composition copolymerized with 0.1 to 10 parts by weight of polyethylene glycol and 0.1 to 5.0 parts by weight of barium sulfate based on 100 parts by weight of the polyester resin.

The spinning temperature is preferably 250 to 300 ° C. and the spinning speed is about 3500 to 4000 rpm. In addition, the stretching temperature at the time of the stretching is 80 to 90 ℃, the stretching ratio is preferably 2.5 to 3.5.

In addition, the heat treatment temperature during the heat treatment is preferably 130 to 140 ℃.

The cross section of the filament manufactured by the above method may be made of a six-sided cross section, a triangular cross section, a flat cross section, and the like, and all of these filaments are characterized by good radiation and excellent gloss.

Polyester filament excellent in touch and drape according to an embodiment of the present invention has a soft touch similar to rayon and a drape, hygroscopicity, and dyeing property superior to general polyester synthetic fibers when manufactured for the final garment. In addition, the polyester filament of the present invention has high strength, excellent salt processability, form stability, and low cost characteristics of the existing polyester synthetic fiber, and thus, the polyester filament of the present invention is used for clothing and interior applications such as lining materials for men and women, circular knitting materials, curtains, etc. It can be used for new applications other than existing polyester synthetic fibers and rayon fibers.

Hereinafter, embodiments of the present invention will be described in detail.

Example  One

Terephthalic acid (TPA) and ethylene glycol (EG) compounds were adjusted to a reaction ratio of 1: 1.2, and esterified at 1140 Torr pressure at 250 ° C. to obtain an ester formation. The reaction rate was 97.5%. The formed ester reactant was transferred to a condensation polymerization reactor, where the concentration was 1.0 parts by weight of polyethylene glycol (molecular weight 1,000) and 1.0 parts by weight of barium sulfate (13 parts by weight based on 100 parts by weight of ethylene glycol (EG)) based on 100 parts by weight of the ester reactant. Slurry) and condensation polymerization catalyst, 0.03 parts by weight of antimony trioxide was added, and the resultant polyester resin obtained after the condensation polymerization reaction was heated to 285 ° C. while gradually depressurizing to a final pressure of 0.5 Torr. Initial elastic modulus, drape, dyeing rate, and spinning workability of the filament were evaluated through the stretching and heat treatment steps.

Example 2

In the same manner as in Example 1, the amount of polyethylene glycol (molecular weight 8000) was 5.0 parts by weight and the amount of barium sulfate was 2.0 parts by weight based on 100 parts by weight of the ester reactant.

Example  3

In the same manner as in Example 1, the polyethylene glycol (molecular weight 20,000) was added to 7.0 parts by weight and the barium sulfate input to 5.0 parts by weight based on 100 parts by weight of the ester reactant.

Comparative Example 1

In the same manner as in Example 1, polyethylene glycol and barium sulfate were not added to the ester reactant.

Comparative example  2

In the same manner as in Example 1, the amount of polyethylene glycol (molecular weight 900) was added to 5.0 parts by weight based on 100 parts by weight of the ester reactant and 2.0 parts by weight of titanium dioxide was mixed.

Comparative example  3

In the same manner as in Example 1, only 2.0 parts by weight of titanium dioxide was added without adding polyethylene glycol to 100 parts by weight of the ester reactant.

※ Measurement method

1. Initial modulus of fiber

Soft touch was evaluated by replacing the initial modulus of the fiber after spinning of the modified polyester resin. Initial elastic modulus was measured using Textechno's elongation tester, and rayon's initial elastic modulus was 60g / den.

2. Drape property

The modified polyester resin was evaluated by comparing the relative drape properties of experts after spinning and weaving, and evaluated as ◎: very good, ○: excellent, Δ: normal, ×: poor.

3. Dyeing rate

After spinning the modified polyester resin, and circular knitting, after dyeing with a blue dispersion dye at 98 ℃ for 45 minutes at normal pressure to calculate the dyeing ratio compared to rayon yarn (100% dyeing rate).

Copolymer composition ratio and the evaluation results of the filaments prepared in Examples and Comparative Examples are as follows.

division Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 PEG content One 5 7 0 5 0 Barium Sulfate Content One 2 5 0 0 0 Titanium dioxide 0 0 0 0 2 2 Initial modulus of elasticity (g / den) 71 61 58 82 81 78 Drape Castle ○ ◎ ◎ × △ △ Dyeing rate (%) 78 80 84 37 78 39 Radiation workability ○ ◎ ○ ○ ○ ◎

According to the results of Table 1, the polyester filament of the present invention has excellent touch and drape property compared to general polyester synthetic fibers during processing, improved dyeing property by polyethylene glycol, and a hydrophilic group is imparted to the polyester domain to improve hygroscopicity. It was confirmed that excellent polyester filaments were produced.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be obvious to the person.

Claims (15)

In polyester filament,
Polyethylene glycol and barium sulfate are copolymerized with a polyester resin polymerized with a compound and a diol compound having -C00H or -COOR (wherein R is a C ₁ to C ₁₀ alkyl group or an arylalkyl group) at the terminal of the polymerization monomer, wherein the poly 0.1 to 10 parts by weight of polyethylene glycol and 0.1 to 5.0 parts by weight of barium sulfate are copolymerized based on 100 parts by weight of the ester resin,
Compounds having -C00H or -COOR (wherein R is a C ₁ to C ₁₀ alkyl group or arylalkyl group) at the terminal of the polymerization monomer are terephthalic acid, dimethyl terephthalate, naphthalene dicarboxylic acid, cyclohexane dicarboxylic acid. And dihydroxy benzoic acid is selected from one or more,
The barium sulfate is a polyester filament excellent in touch and drape, characterized in that the diol compound is a slurry by dispersing at a concentration of 1.0 to 40.0 parts by weight of the barium sulfate relative to 100 parts by weight of the solvent in the solvent. delete The method of claim 1,
The diol compound is characterized in that at least one selected from the group consisting of ethylene glycol, diethylene glycol, triethylene glycol, 1,4-butanediol, 1,3-propanediol, 1,6-hexanediol and cyclohexane dimethanol Polyester filament with excellent feel and drape. The method of claim 1,
Polyester filament excellent in touch and drape, characterized in that the molecular weight of the polyethylene glycol is 1,000 ~ 20,000. The method of claim 1,
0.1 to 5.0 parts by weight of the average particle diameter of barium sulfate is 0.01 ~ 2.0㎛ polyester filament excellent in touch and drape. delete In the method for producing a polyester filament,
Polyethylene glycol and barium sulfate are copolymerized with a polyester resin polymerized with a compound and a diol compound having -C00H or -COOR (wherein R is a C ₁ to C ₁₀ alkyl group or an arylalkyl group) at the terminal of the polymerization monomer, wherein the poly Forming a composition in which 0.1 to 10 parts by weight of polyethylene glycol and 0.1 to 5.0 parts by weight of barium sulfate are copolymerized based on 100 parts by weight of the ester resin; And
Including spinning, stretching and heat treating the composition,
Compounds having -C00H or -COOR (wherein R is a C ₁ to C ₁₀ alkyl group or arylalkyl group) at the terminal of the polymerization monomer are terephthalic acid, dimethyl terephthalate, naphthalene dicarboxylic acid, cyclohexane dicarboxylic acid. And dihydroxy benzoic acid is selected from one or more,
Wherein the barium sulfate is a slurry of the diol compound as a solvent in a concentration of 1.0 to 40.0 parts by weight of the barium sulfate relative to 100 parts by weight of the solvent dispersed in the polyester filament excellent in the feel and drape. The method of claim 7, wherein
The temperature at the time of the spinning is 250 to 300 ℃ manufacturing method of polyester filament excellent in touch and drape. The method of claim 7, wherein
The stretching temperature at the time of the stretching is 80 to 90 ℃, the stretching ratio is 2.5 to 3.5, characterized in that the polyester filament excellent in touch and drape properties. The method of claim 7, wherein
The heat treatment temperature at the time of the heat treatment is 130 to 140 ℃ manufacturing method of polyester filament excellent in touch and drape. delete The method of claim 7, wherein
The diol compound is characterized in that at least one selected from the group consisting of ethylene glycol, diethylene glycol, triethylene glycol, 1,4-butanediol, 1,3-propanediol, 1,6-hexanediol and cyclohexane dimethanol The manufacturing method of the polyester filament excellent in the touch and drape property. The method of claim 7, wherein
The molecular weight of the polyethylene glycol is 1,000 to 20,000, characterized in that the polyester filament excellent in touch and drape. The method of claim 7, wherein
0.1 to 5.0 parts by weight of the average particle diameter of the barium sulfate is 0.01 ~ 2.0㎛ characterized in that the polyester filament excellent in the touch and drape. delete