JPS626977A - Polyester filament for knitted fabric and its production - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a polyester filament for woven or knitted fabrics and a method for producing the same, and more specifically to a high-speed, high-quality polyester filament treated with a specific organic amine salt and a phosphate ester salt. The present invention relates to a polyester filament for woven or knitted fabrics that can be made into woven or knitted fabrics, and a method for producing the same.

(Prior Art) Recently, in the production, weaving and knitting processing of fibers, especially synthetic fibers, in order to improve productivity, the processing speed of threads has been increased. Along with this, the contact pressure between the yarn and contact materials such as guides and rollers increases, and the increase in friction between the yarn and the contact materials or the entanglement of the yarn due to the generation of static electricity causes fuzz. , a problem has arisen in that the occurrence of yarn breakage is increasing. Further, there arises the problem that the contact body is severely worn and the contact body must be replaced frequently. All of these problems reduce production efficiency and quality and lead to increased costs, so it is desirable to avoid them as much as possible.

For example, in the production of polyester filaments for weaving and knitting, conventionally, melt-spun undrawn yarn is wound onto a bobbin and then drawn at a speed of 500 to 1,200 m7 to produce the desired filament. However, in recent years, direct spinning has been adopted, in which the undrawn yarn is drawn continuously without being wound up once, and drawing is carried out at a drawing speed exceeding 2,000 m/7 minutes. It's starting to look like this. Such high-speed drawing is usually carried out using a roller method, and since the yarn comes into direct contact with the roller, under high tension such as during drawing, the oil layer applied during spinning often breaks, causing fuzz on the yarn. This may result in thread breakage or thread breakage. In this case, the higher the roller temperature, the greater the breakage of the oil layer, the greater the occurrence of fuzz and yarn breakage, and the more difficult it becomes to produce stable polyester filaments.

On the other hand, weaving and knitting processes have also been made faster to improve production efficiency; for example, warping machines have traditionally
The warping machine used to have a warping speed of more than 1,000 m/min, but has recently been developed and put into practical use. This increase in speed increases the friction between the yarn and the contacting body incomparably, increasing fuzz and yarn breakage, as well as abrasion of the contacting body and generating static electricity. This not only causes tangles, but also causes thread breakage in extreme cases. In this case, the lower the indoor humidity, the greater this tendency becomes.

Conventionally, the oil agent generally applied to fiber threads is
It is composed of smoothing agents, antistatic agents, emulsifiers, etc., and it is extremely difficult to overcome the various obstacles associated with higher speeds using existing oils, and although many oils have been proposed so far, All of these are effective in some respects, but so far no material has been found that satisfies both high-speed stretchability and weaving/knitting processability. For example, Japanese Patent Application No. 51-43685 describes an oil containing a component corresponding to the organic amine salt (A) of the present invention. When stretching with a roller, the oil layer is cut and fuzz and yarn breakage occur frequently, resulting in a disadvantage in processing. A-edition processability is extremely poor. Further, JP-A-53-126397 discloses an oil agent containing a component similar to the organic amine salt (A) component of the present invention, but this oil agent also has insufficient antistatic properties and cannot be used at high speeds. Fuzzing and thread breakage occur frequently during stretching, weaving and knitting processing.

(Problems to be Solved by the Invention) The present invention solves the above-mentioned problems, and provides high-speed smoothness and cohesiveness to the fiber yarn when producing polyester filaments for woven or knitted fabrics by a direct spinning method at high speed. granted,
In addition, it is possible to stably produce filaments with less fluff and breakage by strengthening the oil film of the oil layer, and it is also possible to produce filaments with less fuzz and breakage.
It has a high level of anti-static performance during weaving and knitting,
It is an object of the present invention to provide a polyester filament for woven or knitted fabrics that can prevent yarn entanglement, prevent wear of reeds and healds, and produce stable, high-quality woven or knitted fabrics, and a method for producing the same. .

(Means for Solving the Problems) In order to achieve the above object, the inventors of the present invention, as a result of extensive studies, added an oil agent containing a specific compound to a polyester filament, and added a suitable amount of interlace entanglement to the polyester filament. The inventors have discovered that it is possible to achieve the intended purpose by providing the following information, and have arrived at the present invention.

That is, the present invention has an organic amine salt (A) of a monoolefin dicarboxylic acid having 8 to 25 carbon atoms, and a phosphoric acid ester salt (B) shown in the general formula, and has 3 to 3 carbon atoms.
A polyester filament for woven or knitted fabrics characterized by having a degree of entanglement of 0 filaments/m, further comprising an organic amine salt (A) of monofluorindigalboxylic acid having 8 to 25 carbon atoms. After treating the spun polyester filament undrawn yarn with a treatment agent containing ~10% by weight and 1~10% by weight of the phosphoric acid ester salt (B) represented by the general formula, it is immediately drawn by a roller method without being wound up. A method for producing polyester filaments for woven or knitted fabrics, characterized in that the polyester filaments are drawn at a speed of ,000 m/min or more, and then interlaced immediately before winding to give the polyester filaments a degree of entanglement of 3 to 30 pieces/m. be.

The polyester filament of the present invention must first be coated with an organic amine salt (A) of monofluorfin digalboxylic acid having 8 to 25 carbon atoms.

This organic amine salt (A) is a salt obtained by neutralizing a dicarboxylic acid having one double bond in the molecule or its acid anhydride with an organic amine. Examples of the dicarboxylic acid component include maleic acid, itaconic acid, citraconic acid, glutaconic acid, cis-4-cyclohexene-1,2-dicarboxylic acid, and acid anhydrides thereof, and maleic anhydride is particularly desirable. Further, the olefin to be added to these acids has 8 to 25 carbon atoms, and examples thereof include octene, isooctene, nonene, dodecene, and octadecene.

In addition, in the present invention, it is particularly important to use an organic amine salt of dicarboxylic acid; metal salts such as Na, Ni, etc. have poor compatibility with oil agents and cause scum to accumulate on the roller. In order to reduce the oil film strengthening effect of the component phosphoric acid ester salt (B), if the stretching speed is 2,000 m7 minutes or more, fluffing and yarn breakage will occur frequently, making it unusable. Note that the degree of neutralization with the organic amine may be either complete or partial. Here, the organic amines used include, for example, alkanolamines such as monoethanolamine, jetanolamine, and diptylethanolamine; triethanolamines such as triethylamine and tributylamine; alkylamines such as octylamine, laurylamine, and oleylamine; Further examples include ethylene oxide adducts of these.

Next, examples of suitable organic amine salts (A) used in the present invention are as follows.

(1) Triethanolamine salt of nonene adduct of maleic anhydride, (2) Laurylamine salt of pentadecene adduct of maleic anhydride, (3) Laurylamine salt of 3 mole ethylene oxide adduct of octadecene adduct of maleic anhydride. salt, (4) tributylamine salt of decene adduct of itaconic acid, (5) oleylamine salt of 2 mole ethylene oxide adduct of octadecene adduct of citraconic acid, (6) monoethanolamine salt of pentadecene of glutaconic acid, Organic amine salt of monoolefin carboxylic acid < A
) is 0.005 for polyester filament
It is desirable that the amount of adhesion be 0.15% by weight.
Furthermore, in addition to the organic amine salt (A) of the monoolefin carboxylic acid mentioned above, the polyester filament of the present invention needs to have a phosphoric acid ester salt (B) shown by the general formula attached thereto.

Specifically, the phosphoric acid ester salt (B) is a phosphoric acid composed of a polyoxyalkylene ether obtained by adding ethylene oxide and/or propylene oxide to a higher alcohol such as octyl alcohol, lauryl alcohol, or oleyl alcohol, or an alkyl phenol such as nonylphenol or laurylphenol. Ester salts are used. Among these phosphoric acid ester salts, alkali metals such as N8% K are most preferred, followed by organic amine salts and ammonium salts, in that order. This phosphoric acid ester salt (B)
Not only does it have good oil film strength and excellent high-speed stretchability, but it also improves high-temperature compatibility with other oils by adding alkylene oxide, and extremely reduces scum formation on the roller.

It is desirable that this phosphoric acid ester salt (B) adheres to the polyester filament in an amount of 0.005 to 0.15% by weight.

The polyester filament of the present invention needs to have the above-mentioned organic amine salt (A) and phosphate ester salt (B), and also have a degree of entanglement of 3 to 30 filaments/m. By combining this entanglement treatment with the organic amine salt (A) and phosphoric acid ester salt (B), surprisingly, the fuzz during yarn spinning can be significantly reduced, and furthermore, the weaving process can be improved.
The effect of preventing metal wear on reeds and knitting needles during knitting is also significantly improved, and fuzz and yarn breakage are also significantly reduced. However, in terms of the quality of the weaving or knitting, excessive entanglement due to interlacing will cause deterioration of the quality, so the upper limit must be kept within a range that allows for the quality of the fabric, and is usually 30 pieces/m or less. However, below 3 particles/m, there is no confounding effect;
The optimal number is 10 to 20 pieces/m.

In order to produce the polyester filament of the present invention as explained above, 1 to 10% by weight of the above-mentioned organic amine salt (A) is added.
After treating the spun polyester filament with a treatment agent containing 1 to 10% by weight of phosphoric acid ester salt (B), it is immediately processed by a roller method for 2,000 yen without being wound up.
The polyester filament is drawn at a speed of 7 m or more, and then interlaced just before winding to give the polyester filament a
It is sufficient to provide a degree of entanglement of ~30 pieces/m.

The organic amine salt (A) and the phosphoric acid ester salt (B) can be used as lubricants such as various conventionally used textile oils, such as mineral oils, animal and vegetable oils, various synthetic ester lubricants, polyalkylene glycol lubricants, Synthetic silicone lubricants are also appropriately added to the emulsifying side and various textile oils containing various nonionic and ionic activators as antistatic agents, and applied to the spun polyester filaments. It is effective to add the organic amine salt (A) and the phosphoric acid ester salt (B) in an amount of 1% by weight or more. If it exceeds 10% by weight, heat resistance deteriorates and it turns into tar on the roller, which is not preferable. In particular, the preferred amount of each addition is 3 to 10% by weight. In addition, when using the oil of the present invention, any method can be used to attach it to the spun polyester filament, such as an oiling roller method, a nozzle spray method, or a metering oil method. It may be applied or it may be applied as a straight oil. The concentration in the case of forming an aqueous emulsion is preferably 5 to 20% by weight. The amount of oil attached varies depending on the use of the yarn, but it is generally appropriate to select it within the range of 0.3 to 2% by weight (based on the weight of the fiber), and the amount of attached organic amine salt (A) 0.005 to 0.15% by weight
, the adhesion amount of phosphoric acid ester salt (B) is 0.005 to 0.
It is desirable that the content be 15% by weight.

Adding entanglement to polyester filaments immediately before winding after stretching is described in Japanese Patent Publication No. 36-12230 and Japanese Patent Publication No. 3
This is suitably performed by interlace processing using fluid jetting, which is known from Japanese Patent No. 7-1175 and the like.

(Example) Hereinafter, the present invention will be specifically explained with reference to Examples.

In addition, the degree of entanglement, stretching stability, oil film strength, stretching roller scum, knitting needle abrasion resistance, yarn entanglement property, static electricity generation during warping, and fabric quality in Examples were measured and evaluated as follows.

(1) Degree of entanglement Apply a load of 1/10 of the denier [unit (g)] to the lower end of the yarn with a length of 100 ann, divide the total single yarn into two at 1 cm from the upper end, and insert a thin needle into it. , a load [unit (g)] corresponding to the average single yarn denier of the multifilament is hung from each end of the needle, and the load is 2 cm.
/second, and read the number of times the drop stops. The same operation was repeated 20 times and the average degree of entanglement was measured.

(2) Stretching stability Based on the degree of occurrence of fluff during stretching and yarn breakage rate, the results were indicated as ○good, Δslightly poor, and ×poor.

(3) Oil film strength: 3/4 measured by wearing type, four-ball lubricating oil tester of Shinko Zozo
Oil film strength was measured using an inch steel ball at a shaft rotation speed of 20 rpm.

(4) Stretching roller scum The magnitude of roller scum generation is indicated by ○ no scum generation, Δ slight scum generation, and x large scum generation.

(5) Abrasion of knitting needles The drawn yarn was fed to a regular circular knitting machine, and the number of days to replace the knitting needles due to wear was measured. Measurements were carried out for up to 60 days.

(6) Thread entanglement The drawn yarn was passed through a high-speed warper for 1,200 m for 7 minutes, and the amount of yarn entanglement in the front part was determined. ○ indicates no yarn entanglement, Δ indicates slight yarn entanglement, × indicates large yarn entanglement It was evaluated by (7) Static electricity generated during warping The drawn yarn was passed through a high-speed warper at 1200 m/min and the static electricity on the yarn at the front reed portion was measured using a Kasuga current collector measuring device.

(8) Textile quality After applying approximately 0.3% by weight of a sizing agent of 50% by weight of polyvinyl alcohol and 50% by weight of acrylic ester to the drawn yarn, and twisting the yarn at a number of twists of 2,000 pieces/m using an Itari complete twisting machine. A strongly twisted fabric was woven in a normal room, and the quality of the fabric was evaluated as: Good, Δ Twisted, Fuzzed, Slightly peeled, and Bad Twisted, Fuzzed, and Slightly fluffed.

Example, polyethylene terephthalate with an intrinsic viscosity of 0.64,
1. Melt-spun at a spinning speed of 200 m7 minutes, and added various oils with the compositions listed in the following table to the spun yarn as a water-based emulsion (
The emulsion concentration was set to 12%), and the pure oil was deposited using an oiling roller so that the amount of pure oil deposited was 0.8% by weight. Next, without winding up, it was immediately stretched to 3.2 times with a heating roller at 130°C, and then
Interlacing was performed using an interlace device similar to that described in Figure 3 of Publication No. 6-12230, and 3,8
A polyester filament of 75 denier/36 filaments was obtained by winding at a speed of 0.00 m/7 min. In this case, the amount of compressed air jetted in the interlace device was variously changed to obtain filaments with different degrees of entanglement as shown in the following table.

Each experiment was conducted over two days, during which the stretching stability and stretching roller scum were evaluated, and each filament obtained was evaluated for knitting needle abrasion resistance, yarn entanglement resistance, static electricity generation during warping, and fabric quality. The results are shown in the table below.

(Hereinafter, blank space) As is clear from the table, the organic amine salt (A) of the present invention
The filaments to which and phosphoric acid ester (B) are attached and whose degree of entanglement is within the range of 3 to 30 pieces/m (Examples 1 to 5 of the present invention) have high oil film strength and good stretching stability. There is also less occurrence of stretching roller scum, knitting needle wear, yarn entanglement,
There is little static electricity generated during warping, and the quality of the fabric is also good.

On the other hand, when the degree of entanglement is less than 3 pieces/m, the stretching stability slightly decreases even if the organic amine salt (A) and phosphoric acid ester salt (B) are attached, and knitting needle wear and yarn tangles occur. The quality of the fabric also deteriorates (Comparative Examples 1 to 4). Further, even if the degree of entanglement exceeds 30 pieces/m, knitting needle wear increases and the quality of the fabric deteriorates (Comparative Example 5). Further, when the organic amine salt (A) and the phosphoric acid ester salt (B) are not both contained (Comparative Example 6), and when the organic amine salt (A) is contained only and the phosphoric acid ester salt (B) is not contained (Comparative Example 7). ), containing only the phosphoric acid ester salt (B) and not containing the organic amine salt (A) (Comparative Example 8.9), the oil film strength was low;
Stretching stability is poor and there are many stretching roller scums. In addition, knitting needle wear, yarn tangles, and static electricity generation during warping occur frequently, resulting in poor fabric quality.

(Note) Compounds A-1, A-2, B-1, B-2, B in the table
-3 is a compound with the following composition.

Compound A-1: laurylamine salt of nonene adduct of maleic anhydride Compound A-2: oleylamine salt of 2 mole ethylene oxide adduct of dodecene adduct of maleic anhydride Compound B-1 = 2 mole ethylene oxide of lauryl phosphate Potassium salt of adduct Compound B-2 = Potassium salt of 2 moles of ethylene oxide and 1 mole of propylene oxide adduct of oil phosphate, Compound B-3 Potassium salt of 5 mole of ethylene oxide adduct of nilauryl phosphate (effects of the invention) According to the present invention, due to the synergistic effect of the combination of a specific organic amine salt (A), a specific phosphoric acid ester (B), and a specific range of degree of entanglement, fuzz and yarn breakage during stretching are reduced, resulting in improved stretching stability. In addition, warping, weaving, and knitting performance are significantly improved. In particular, it actively reduces metal wear on reeds and knitting needles, and suppresses static electricity generated to eliminate yarn tangles, thereby increasing operating efficiency. It is possible to obtain high-quality fabrics by greatly improving the quality of fabrics.

Claims (1)

[Scope of Claims] 1. It has an organic amine salt (A) of a monoolefin dicarboxylic acid having 8 to 25 carbon atoms, and a phosphoric acid ester salt (B) represented by the following general formula, and 3 to 30 carbon atoms. A polyester filament for use in woven or knitted fabrics, characterized in that it has a degree of entanglement of 5/m. ▲There are mathematical formulas, chemical formulas, tables, etc.▼ [However, R is a saturated or unsaturated aliphatic group with 8 to 20 carbon atoms, or an aralkyl group in which an alkyl group with 1 to 9 carbon atoms is substituted with an aromatic group. show. R' represents a hydrogen atom or a methyl group, but it may also be a mixture of hydrogen atoms and methyl groups, ie, a copolymer of propylene oxide and ethylene oxide. n is a positive integer from 1 to 15, m is 1 or 2
, X is ammonium salt, organic amine salt, Na, K, Li
represents an alkali metal salt of ] 2. Organic amine salt for polyester filament (
The amount of adhesion of A) and phosphoric acid ester salt (B) is 0, respectively.
．． The polyester filament for woven or knitted fabrics according to claim 1, wherein the polyester filament has a content of 0.005 to 0.15% by weight. 3. A treatment agent containing 1 to 10% by weight of an organic amine salt (A) of a monoolefin dicarboxylic acid having 8 to 25 carbon atoms and 1 to 10% by weight of a phosphoric acid ester salt (B) represented by the following general formula. After processing the spun polyester filament undrawn yarn, it is immediately drawn by a roller method at a speed of 2,000 m/min or more without being wound up, and then immediately before winding, an interlace treatment is applied to the polyester filament to give a A method for producing polyester filaments for woven or knitted fabrics, characterized by imparting a degree of entanglement of 30 filaments/m. ▲There are mathematical formulas, chemical formulas, tables, etc.▼ [However, R is a saturated or unsaturated aliphatic group with 8 to 20 carbon atoms, or an aralkyl group in which an alkyl group with 1 to 9 carbon atoms is substituted with an aromatic group. show. R' represents a hydrogen atom or a methyl group, but it may also be a mixture of hydrogen atoms and methyl groups, ie, a copolymer of propylene oxide and ethylene oxide. n is a positive integer from 1 to 15, m is 1 or 2
, X is ammonium salt, organic amine salt, Na, K, Li
represents an alkali metal salt of ]