JPS6361430B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a raw yarn useful for drawing and frictionally false-twisting a polyester fiber yarn at high speed, and a method for false-twisting the raw yarn. More specifically, the present invention relates to a raw yarn in which almost no scum buildup is observed on a high-temperature heater during drawing friction false twisting at high speed, and a method for false twisting the raw yarn. The purpose of the present invention is to achieve both antistatic properties and heater scum reduction when processing raw yarn for friction false twisting at high speeds, thereby minimizing fuzz and yarn breakage, and improving workability such as threading performance. It is an object of the present invention to provide a raw yarn and a method for false twisting the raw yarn, which can obtain stable processability such as strength and elongation, crimpability, and level dyeing property of the crimped yarn without decreasing the properties of the yarn. Recently, a method of drawing and simultaneously false-twisting polyamide fibers and polyester fiber yarns has been implemented, but the speed of this drawing false-twisting process has changed from the conventional spindle method to the friction false-twisting method (hereinafter referred to as Frixion). Since then, the speed has been dramatically increased. And even the friction method has been further speeded up due to advances in various machinery and equipment.
Recently, speeds are rapidly progressing from 400m/min to 1000m/min. However, as the processing speed increases, the contact pressure between the yarn and various contact bodies (e.g. guides, rollers, heaters, etc.) increases, and the heat treatment temperature increases as the processing speed increases, making the yarn increasingly harsh. It is often affected by the conditions. For example, as the processing speed increases, the friction between the fibers and various contact bodies increases significantly, resulting in an increase in the occurrence of fuzz and yarn breakage due to fiber damage, resulting in a decrease in processability. Furthermore, as the yarn speed increases, the speed of the rotating section naturally increases, resulting in extremely poor threading performance and other workability. In addition, a phenomenon that becomes more noticeable with high-speed processing is that the false-twisting speed naturally increases correspondingly, so a very large centrifugal force is exerted on the yarn, and conventionally well-known processing agents do not apply processing agents to the fibers. It is squeezed out from the surface and shaken off, resulting in an increase in the amount scattered onto the heater. As a result, the heater becomes seriously contaminated and, in extreme cases, the inconvenience of so-called tar flowing down the grooves of the heater occurs. In addition, if the processing agent contains components that are easily decomposed by heat, it may gel on the heater or leave a non-volatile sludge-like substance, which will drastically reduce the thread passing through and cause the processed thread to become fluffy. This can lead to crimping, abnormal crimping, and even yarn breakage. Therefore, in order to increase productivity, the heater must be cleaned frequently. However, frequent cleaning of the heater will conversely reduce productivity, resulting in an increase in costs. In order to solve these problems, heat-resistant oils have recently been studied, and oils containing various polyether compounds as main components have been frequently proposed. That is, lubricants made of copolymers of propylene oxide and ethylene oxide have been well known for a long time, and their general characteristics are clear. However, a more detailed study reveals that, in general, when the copolymerization ratio changes, the properties of a copolymer of propylene oxide and ethylene oxide also change significantly. For example, the behavior varies considerably depending on the number of terminal groups, the copolymerization ratio of propylene oxide and ethylene oxide, the molecular weight, and even the substances blended. Additionally, copolymers of propylene oxide and ethylene oxide are generally water-soluble, and it has been experimentally confirmed that as the copolymerization ratio of ethylene oxide increases, the water solubility increases, but on the other hand, the amount of residue after heating increases. . On the other hand, when the copolymerization ratio of propylene oxide increases, the cloud point becomes extremely low and the aqueous solution becomes extremely unstable when the copolymerization ratio exceeds a certain level, and eventually it was concluded that a stable aqueous solution could not be obtained unless an emulsifier was mixed in. Show characteristics. Therefore, the copolymer of propylene oxide and ethylene oxide includes a wide range of contents that should be limited in accordance with the individual technical problems to be solved. To explain this point more specifically, copolymers of ethylene oxide and propylene oxide are generally stable against oxidation and thermal decomposition at temperatures below 200°C, but decompose when exposed to high temperatures over 200°C for long periods of time. , and even form deposits as sludge and varnish-like residues after decomposition. However, it is well known that it produces less sludge than mineral oil or synthetic ester compounds. However, among polyether-based lubricants, polyethylene glycol, which is made only of ethylene oxide, has a higher amount of sludge remaining after heating than a copolymer of propylene oxide and ethylene oxide, and cannot be used as a base for processing agents for high-speed processing. However, in order to reduce the amount of sludge remaining, the copolymerization ratio of propylene oxide is high, that is, the copolymerization ratio of propylene oxide and ethylene oxide (hereinafter referred to as PO/EO) is 35/65 (mol%) or more, that is, propylene oxide It has been found that it is sufficient to use a material having a copolymerization ratio of 35 mol% or more. However, this property does not directly apply to the treated raw yarn for high-speed false twisting, and even if such a polyether lubricant is used alone, workability and processability are still unstable. Therefore, an antistatic agent is usually used in combination. However, anionic activators, nonionic activators and other cationic agents, which are generally well known as antistatic agents,
Amphoteric activators can be mixed with conventionally known oils, such as Tokkosho.
If the amount used in the examples of JP-A No. 52-47079 and JP-A No. 50-155796 is used as is, scum will accumulate on the heater in several hours to several days during high-speed machining, which is the subject of the present invention. However, the phenomenon of tar formation occurs and the thread passing through becomes extremely poor.
Therefore, simply reducing the amount of antistatic agent to reduce the scum that builds up on the heater can reduce heater scum.
However, when it is below 40%, the heater scum is 10~
Although this decreases compared to the one using about 15%, the initial threading performance and processability become unstable. For example, the anionic activator proposed in Japanese Patent Publication No. 52-47079 has a general formula represented by Na and K salts such as lauric acid, palmitic acid, and oleic acid.

[Formula] and/or the general formula represented by the Na and K salts of octylphosphonic acid, laurylphosphonic acid, oleylphosphonic acid, etc., and the Na and K salts of polyoxyethylene (3 mol) laurylphosphonic acid.

[Formula] and/or general formula represented by Na salt and K salt of polyoxyethylene (3 mol) cetyl sulfate
A composition is shown in which one or more of RO(CH ₂ CH ₂ O) _o SO ₃ M [3] is blended in an amount of 2 to 50% or less based on the polyether lubricant, but the amount added is Naturally, if there is a large amount, the heater scum will increase, and 4%
(weight) or less to 2.0% (weight), processing stability is poor, probably due to insufficient antistatic properties at high speeds. Therefore, in order to perform stable processing, it is usually necessary to
Generally, an anionic antistatic agent containing 6.0% (by weight) or more is often used. In addition, JP-A-50-155796 discloses that polyether lubricants contain 35% to 95% (by weight) of ordinary nonionic activators consisting of polyoxyethylene ethers or esters containing long-chain alkyl. 50%
(by weight), 1 to 30% (by weight) of a phosphate metal salt of a higher alcohol to which ethylene oxide and propylene oxide have been added, and 1 to 30% (by weight) of a metal salt of an alkyl sulfonate. However, in this invention, an anionic activator and a nonionic activator always coexist, and even if an anion amount of 1 to 4% (by weight) is used, it is difficult to reduce heater scum during high-speed processing. Therefore, the present inventors solved the problem by using as little antistatic agent as possible, and even during high-speed machining, there is almost no accumulation of scum on the heater, and the antistatic properties are excellent in processability and workability. As a result of conducting studies to overcome this problem, we discovered that factors such as the electrostatic stability of the oil as a whole and the solubility and dispersibility of the antistatic agent used in polyether play an extremely critical role. did. From this point of view, we further pursued an antistatic agent that could be ideally used in combination with polyether, and surprisingly found that a metal salt of a long-chain monoolefin dicarboxylic acid was used in combination with a phosphate-based or sulfonate-based anionic activator. When doing so, they discovered that the oil agent as a whole exerts the desired effect and arrived at the present invention. Thus, according to the present invention, there is provided a polyester filament coated with the treatment composition described below, as well as a method for drawing and false twisting the filament at high speed. [A] The polyether lubricant has a copolymerization ratio of propylene oxide and ethylene oxide of 35/
65-90/10 (mol%) with an average molecular weight of 1000-
15,000, and is blended at least 96% (by weight) in the treatment composition, and [B] the anionic component has [] double bonds. A long-chain monoolefin dicarboxylic acid obtained by adding an olefin having 8 to 18 carbon atoms to a dicarboxylic acid or its anhydride, and/or the monoolefin dicarboxylic acid has one molecule in the molecule with the corresponding dicarboxylic acid anhydride. Alkali metal salts, ammonium salts, organic amine salts, or mixtures thereof of ester derivatives having at least one carboxyl group obtained by reacting the above compounds with hydroxyl groups [] Higher alkyl or aralkyl polyesters Alkali metal salts, ammonium salts, organic amine salts of phosphoric acid esters containing an oxyalkylene ether group, and/or amine salts, organic amine salts of sulfonate compounds having at least one alkyl group and sulfonic acid group in the molecule. , at least one alkali metal salt, and [ ] and [ ] and/or [ ] are blended in the treatment composition in an amount of 0.5% (by weight) or more and 4.0% (by weight) or less. treatment composition. The polyester yarn referred to in the present invention is a semi-drawn yarn commonly referred to as POY, and typically has a birefringence ratio of 0.03 to 0.08 and an elongation of 30 to 250%. As the lubricant in the treatment composition applied to the yarn of the present invention, a polyether compound consisting of a copolymer of propylene oxide (PO) and ethylene oxide (EO), which has been well known, has already been mentioned. However, the copolymerization ratio of propylene oxide and ethylene oxide does not necessarily mean that any polyethers can be used, but the copolymerization ratio of propylene oxide and ethylene oxide may vary depending on other compounds blended with the polyethers, especially long-chain monoolefin-adducted carboxylic acids and/or the monoolefins. In relation to the anionic compound used together with the salt of the ester of addition dicarboxylic acid, the copolymerization ratio of propylene oxide and ethylene oxide is 35/
65-90/10 (mol%) and average molecular weight is 1000-
It consists of one or more types of random or block copolymers consisting of 15,000 yen, and is often used as a compounded oil because it extremely reduces scum accumulation on the heater even during high-speed machining, especially in the present invention. It is characterized by not using any emulsifiers. That is, a material having a self-emulsifying property or a material close to self-emulsifying and capable of dispersing in an anion content of [B] of 0.5 to 4.0% (by weight) is used. However, there is no problem in adding a small amount of a volatile emulsifier for a completely different purpose than for emulsification. On the other hand, if the copolymerization ratio of EO in the PO/EO ratio becomes extremely high, water solubility is basically obtained without the need to add any emulsifier. However, polyethylene glycol and polyether compounds with a low PO ratio substantially accumulate heater scum during false twisting, so it is not preferable to unnecessarily increase the EO ratio. Therefore, the polyether lubricant [A] used in the present invention is limited to polyethers having a PO/EO ratio of 90/10 to 35/65 (mol %). More specifically, in a preferred embodiment of the present invention, the average molecular weight of the polyether is about 1,000 to 10,000.
One or more types of random copolymers and/or block copolymers are used as a mixture, but in order to smoothen the frictional behavior of the fiber surface in the range from room temperature to high temperature, it is necessary to compare the molecular weights. low on the mark
At least one of about 1,000 to 4,000 and about 5,000 to 15,000 are used in combination in a ratio of 10 to 90:90 to 10. If the average molecular weight is less than 1000, the smoke-emitting property will increase;
If it exceeds 15,000, it becomes difficult to significantly reduce the scum on the heater, and furthermore, the viscosity increases, resulting in extremely poor workability, which is undesirable. Further, regarding random copolymers and block copolymers, random copolymers having a lower phase inversion viscosity are more advantageous, but there is no particular limitation. The polyethers used in the present invention can be prepared by conventionally known methods such as monohydric to polyhydric alcohols, monocarboxylic acids to polycarboxylic acids, monoamines to polyhydric amines, mercaptans, and ethylene oxide or propylene oxide. An unterminated group having an active group that can react can be used. The type and number of terminal groups of these polyethers are not particularly limited, but particularly preferable terminal groups are those having a boiling point of 200°C or less, such as those of monohydric alcohols or polyhydric alcohols. If we compare, for example, butanol, a lower monohydric alcohol, and sorbitol, a hexahydric alcohol, the former is superior. Regarding the number of terminal groups, the smaller the number, the better. n>...6>5>4>
3...>1 is preferable. The essential component [B] used in combination with the polyether lubricant [A] is a long-chain monoolefin addition obtained by adding an olefin having 8 to 18 carbon atoms to a dicarboxylic acid having a double bond or its anhydride. At least one carboxyl group obtained by reacting a dicarboxylic acid and/or the monoolefin-added dicarboxylic acid or a corresponding long-chain monoolefin-added dicarboxylic acid anhydride with a compound having one or more hydroxyl groups in the molecule. An alkali metal salt, an ammonium salt, an organic amine salt, or a mixed salt thereof is used. That is, to obtain a long-chain monoolefin-added dicarboxylic acid, dicarboxylic acids having one double bond in the molecule or their anhydrides include, for example, maleic acid, itaconic acid, citraconic acid, glutaconic acid, or acid anhydrides thereof. However, maleic anhydride is particularly desirable. The olefins to be reacted with the dicarboxylic acid or acid anhydride include olefins having 6 to 18 carbon atoms, such as octene, isooctene, nonene, dodecene, pentadecene, and octadecene. A long-chain monoolefin-adducted dicarboxylic acid is produced. Then, it is further neutralized with an alkali metal hydroxide such as sodium hydroxide or potassium hydroxide, or by using ammonia or an alkanolamine such as triethanolamine or diethanolamine, or an alkylamine such as triethylamine, tributylamine, or laurylamine. It can be produced by neutralization. Furthermore, the ester derivative of the monoolefin-added dicarboxylic acid mentioned above is obtained by further reacting the long-chain monoolefin-added dicarboxylic acid or its acid anhydride with a compound having a hydroxyl group, and the compound having a hydroxyl group has 4 carbon atoms. ~18 various saturated or unsaturated alcohols such as butanol, octanol, lauryl alcohol, oleyl alcohol, stearyl alcohol, etc., and other natural alcohols using coconut oil and beef tallow as raw materials, synthesis by Ziegler method, oxo method, etc. Alcohol can also be used.
Examples of compounds having two or more hydroxyl groups include ethylene glycol, 1,6-hexanediol, neopentyl glycol, propanediol, trimethylolpropane, and pentaerythritol. In addition, compounds having a hydroxyl group and a carboxyl group in one molecule, that is, oxycarboxylic acids, include glycolic acid, lactic acid, 2-
Other examples include oxyhexanoic acid, oxybutenoic acid, ricinoleic acid, malic acid, citric acid, glyceric acid, and tartaric acid. Furthermore, esters of oxyacids with alcohols, such as methyl ricinolenate, are also used. The ester derivative thus obtained has at least one carboxyl group in the molecule, and the carboxyl group can be neutralized with an alkali metal salt, ammonium salt, or organic amine salt. Among these, K and Na are particularly preferred. Examples of compounds suitable for the present invention will now be listed.
However, the present invention is not limited to this in any way. (1) K salt of the adduct of propylene pentamer and maleic anhydride (2) Na salt of the adduct of isobutylene tetramer and maleic anhydride (3) K salt of the adduct of 1-octadecene and itaconic acid ( 4) Nonene adduct of maleic anhydride and monoester K salt of 2-ethylhexanol (5) Diester Na salt of pentadecene, maleic anhydride adduct and ricinoleyl alcohol (6) Adduct of octadecene and maleic anhydride Monoester di-K salt of 1,2-hydroxyoctadecanoic acid (7) Adduct of octadecene and maleic anhydride and monoester di-K salt of lactic acid (8) Adduct of pentadecene and maleic anhydride and monoester di-K salt of propanediol K salt Other anionic surfactants used in combination with the mixture of the polyether lubricant and the salt of the long-chain olefin-added dicarboxylic acid and/or the salt of the ester derivative of the long-chain olefin-added dicarboxylic acid include higher alkyl or an alkali metal salt, ammonium salt, or organic amine salt of a phosphoric acid ester containing an aralkyl polyoxyalkylene ether group [] and/or an amine salt of a sulfonate compound having at least one alkyl group and a sulfonic acid group in the molecule , organic amine salts, and alkali metal salts are blended so that the total amount of anionic components is 0.5 to 4.0%. Among the anionic compounds used in combination with the salt of the long-chain monoolefin-added dicarboxylic acid and/or the salt of the ester derivative of the long-chain olefin-added dicarboxylic acid, the phosphorus-containing compound consisting of a phosphate compound is a higher alcohol or a higher alkyl. , an ammonium salt, an organic amine salt, or an alkali metal salt of a phosphoric acid ester of a compound whose terminal hydroxyl group is a hydroxyl group, and is represented by the following general formula. However, [R represents a saturated or unsaturated aliphatic group having 8 to 18 carbon atoms, an alkyl-substituted aromatic group having 1 to 9 carbon atoms, and R' represents a hydrogen atom or a methyl group, but hydrogen atom and methyl In other words, it may be a copolymer of propylene oxide and ethylene oxide. n is a positive integer from 0 to 15, m is 1 or 2, x is ammonium salt, organic amine salt, Na,
Indicates alkali metal salts of K and Li. [However, when n=0, alkyl-substituted aromatics having 1 to 9 carbon atoms are excluded. ] Specifically, when n=0, it indicates a salt of an alkyl phosphate containing a known higher alkyl group,
Representative examples include ammonium salts, triethanolamine salts, sodium salts, potassium salts, and even lithium salts of phosphate esters such as octyl, lauryl, and oleyl. Also, for reasons unknown, phosphoric acid ester salts consisting of polyoxyalkylene ethers made by adding ethylene oxide or propylene oxide to higher alcohols or alkylphenols, or even ethylene oxide and propylene oxide are the most effective. , alkali metal salts such as sodium and potassium of phosphate esters obtained from polyoxyalkylene ethers added to ethylene oxide and propylene oxide to higher alcohols or aromatic compounds substituted with alkyl groups, and organic amine salts and ammonium salts. The order is In addition, as for the sulfonate compound [] as another component used in combination, at least 1 sulfonate compound in 1 molecule
Ammonium salts and organic amine salts of sulfonate compounds having more than one alkyl group and sulfonic acid;
Consisting of alkali metal salts, specifically, the simplest sulfonate compounds include alkyl sulfonates containing an alkyl group having 8 to 18 carbon atoms, sulfonates such as alkanesulfonates, dodecylbenzene, and laurylbenzene, nonylphenol sulfonates, and dialkylnaphthalenes. , sulfonates such as monoalkylnaphthalene, sulfonates of alkyl diphenyl ethers, ammonium salts such as alkylhydroxyphenyl ether sulfonates, organic amine salts, and alkali metal salts. Also, propyl sulfonate or 2-hydroxypropylsulfonate of alkyl phenoxy polyoxyalkylene having 6 to 14 carbon atoms,
Sulfonate salts of sulfoacetic esters, alkyl ethers of alkyl or alkenyl polyoxyalkylenes having 8 to 18 carbon atoms, sulfonates and sulfoacetic esters, and alkoxy or alkenoxy sulfoalkyl ethers, alkoxy or alkenoxy esters having 8 to 18 carbon atoms. Examples include amine salts, organic amine salts, and alkyl metal salts such as 2-hydroxypropylsulfonate, alkyl or alkenylcarboxy-2-hydroxypropylsulfonate, sulfoalkyl ester, and sulfoacetate. However, the invention is not limited to these in any way; amine salts, organic amine salts, and alkali metal salts of sulfonate compounds that have surface-active ability and have at least one higher alkyl group and sulfonic acid group in one molecule can be used. It will be done. Among these sulfonate salts, alkali metal salts are most preferred, followed by organic amine salts and ammonium salts. In the mixture of [A] component and [] component []
and/or at least one component of [], and the total amount of the anionic compound is
0.5-4.0% (by weight) preferably 1.0-3.0% (by weight)
It is blended so that Therefore, considering only the anion components, two or more types will be blended. In particular, the present invention aims to solve two mutually contradictory problems, such as antistatic properties to enable high-speed drawing and false twisting with a minimum amount of anionic components added, and minimizing heater scum. The above anions were blended and their synergistic effects were ascertained. Although the details of why the synergistic effect is exerted are unknown, when a polyether lubricant is attached to a yarn and rubbed, it has a large negative electrostatic charge. On the other hand, by adding the component [ ], the frictional static electricity of the yarn can be neutralized, that is, it can be made electrically stable, which improves the processability. think. However, if [] ingredients were used alone, it would be 4.0%
Processability is still unstable at addition amounts below. Therefore, simply increasing the amount will increase heater scum, which is not preferable. Therefore, by further adding at least one component [] and/or component [] to the mixture of components [A] and [], the total amount of anions can be reduced to 4.0.
% or less, stable effects as in the present invention can be obtained. In other words, as an anion, the component [] is used as a base, and either the component [] or the component [] is added to it, but it is more preferable to use both in combination to achieve control during high-speed machining with the minimum amount of anion component. Electricity, heat resistance, etc. are improved. Regarding the amount added, the total amount as an anion component is 0.5 to 4.0% (weight), preferably 1.0 to 4.0% (by weight).
It is 3.0% (weight), but if there are two anionic components, the component [ ] is always used in an amount of 50% (weight) or more based on the total amount of anionic components. Moreover, in the case of three or more components, 30% (weight) or more is used. Further, the ratio of the component [ ] to the component [ ] may be about 1:1. However, it is not limited in any way. in this way〔〕
Although the principle by which a stable effect can be exerted by using the component and/or the component in [] in combination is not clear, it is presumed that the dissolution and dispersibility of the anionic component in polyether is improved. In the present invention, a commonly used known nonionic activator (ester or ether activator with an amount of 15 moles or less as polyoxyethylene) can be used in combination to the extent that the accumulation of heater scum does not increase. . High-speed drawing friction false twisting in the present invention refers to processing consisting of a yarn speed of 400 m/min or more, preferably 600 m/min or more. In processing, it is also recognized to have superior effects compared to conventionally known oils. The method of applying the composition of the present invention to threads is normally carried out using a 5.0 to 15.0% (by weight) aqueous emulsion, and the amount of the treated product applied varies depending on the type of fiber, but for example, when using polyester fiber threads, 0.1~0.5
% (weight) preferably within the range of 0.2 to 0.35% (weight) (based on the weight of the fiber). If it is less than 0.1%, the composition of the present invention will adhere unevenly, resulting in uneven crimping, and if it exceeds 0.5%, the composition of the present invention will be blown off during high-speed processing, resulting in heater scum. There is a tendency. The high-speed drawing friction false twist processing agent of the present invention may be used for purposes other than the present invention, for example, as a spindle method false twist processing agent or before the drawing treatment of synthetic fiber spinning (including spin texture). I can't help it. As described above, according to the present invention, by coexisting polyether and two or more types of anionic antistatic agents in a specific combination, the trade-offs related to antistatic properties and heater scum are eliminated, and the product is stable and highly efficient at high speeds. False twisting can be performed. Next, the present application will be specifically explained with reference to examples, but the invention is not limited thereto in the least.
Note that "parts in use" indicate parts by weight, and "percent" indicates weight percent. Examples 1 to 6 and Comparative Examples 1 to 12 When polyethylene terephthalate was melt-spun at a spinning speed of 3300 m/min, the spun yarn was prepared in Table-1.
The pure adhesion amount is determined by using a water-based emulsion with the composition described in 1.
It was made to adhere at a concentration of 0.3% (weight). The resulting 115 denier/36 filament undrawn yarn was stretched at a drawing ratio of 1.5 and at a heater temperature using a ceramic external friction false twisting device equipped with a 45 mm diameter disk.
220℃, friction disk rotation speed 6250r.pm, processing speed 700
False twisting was performed while stretching at m/min. The results are shown in Table-1. Status of scum generation on the heater The status of scum generation on the heater was determined by visual inspection of the amount of scum generated on the heater after three weeks of processing, and was graded as 5 to 1 grade. Grade 5 (good) to grade 1 (poor). The presence or absence of smoke and tar was also determined during processing. Processing stability: It was ranked in 5 grades: ○ good, △ somewhat poor, × poor, based on the amount of fuzz generation during processing, yarn breakage rate, crimpability, etc.

【table】

[Table] Compound [] Long-chain monoolefin dicarboxylic acid and/or obtained by adding an olefin having 8 to 18 carbon atoms to a dicarboxylic acid having a double bond or its anhydride.
or an alkali metal salt or ammonium salt of an ester derivative having at least one carboxyl group obtained by reacting the monoolefin dicarboxylic acid with the corresponding dicarboxylic acid anhydride and a compound having one or more hydroxyl groups in the molecule. ,
Organic amine salt Compound a: K salt of propyrene pentamer and maleic anhydride adduct Compound b: Octadecene, maleic anhydride adduct, and monoester di-K salt of 1,2 hydroxyoctadecanoic acid Compound c: Octadecene and Adduct of maleic anhydride and monoester di-K salt of lactic acid Compound d: Compounds of nonene adduct of maleic anhydride and monoester mono-K salt of 2-ethylhexanol Polyoxyalkylene ether group of higher alkyl or aralkyl Alkali metal salt, ammonium salt, organic amine salt of phosphoric acid ester containing Compound e: K salt of octyl phosphate Compound f: PO/EO 2/3 K salt of lauryl phosphate Compound g: (EO) ₂ K of lauryl phosphate
Compounds of salt [] Amine salts, organic amine salts, alkali metal salts of sulfonate compounds having at least one alkyl group and sulfonic acid group in the molecule Compound h: Na salt of alkyl sulfonate (C ₁₂ - C ₁₆ ) Compound i: Na salt of octyl hydroxyphenyl ether sulfonate From the above results, the following can be said. In the examples of the present invention, the amount of heater scum was small and the processing stability was sufficient. On the other hand, in Comparative Examples ~, heater scum increased and processing stability was insufficient. Furthermore, to explain the comparative examples in detail, the comparative examples ~ lack the component [] that is essential to the present invention, so the processing stability is extremely poor, and the heater scum is also defective because it is simply an effect of a small amount of anions. It was hot. In Comparative Examples ~, only a part of the polyether contained in Comparative Examples ~ was replaced with a nonionic activator, so heater scum further increased. In the comparative example, since the polyether was polyethylene oxide, heater scum increased, and it was clearly distinguished from the present invention. In the comparative example, the polyether of the present invention was changed to a low molecular weight polyether, but in this case, heater scum was reduced, but on the other hand, there was a lot of smoke, and the processing stability (workability) was poor.
It was also defective. In the comparative example, a part of the polyether of the example of the present invention was replaced with a nonionic activator, but heater scum increased. The comparative example had the same combination of ingredients as the present invention, but the amount of anions exceeded the upper limit of the present invention, so heater scum was slightly increased. Further, in the comparative example, the anion was only the [ ] component, and in this case as well, almost the same results as the comparative example were obtained. In the comparative example, since mineral oil and ester were used instead of polyether, heater scum increased in a short time, making processing itself extremely difficult. As can be seen from the examples of the present invention as described above, it can be seen that there is an unexpected synergistic effect by combining component B [ ] and [ ] or [ ] and [ ] or [ ] and [ ] and [ ]. . Examples 7 to 9 When polyethylene terephthalate was melt-spun at a spinning speed of 3500 m/min,
The composition described in No. 2 was deposited using an aqueous emulsion at an emulsion concentration of 10% (weight) so that the amount of pure matter deposited was 0.25 to 0.4% and 0.60% (weight) or more. The obtained 78 denier/36 filament undrawn yarn was stretched using a circumscribed friction false twisting device equipped with a urethane rubber disc with a diameter of 45 mm and a hardness of 88° at a stretching ratio of 1.5 times, a heater temperature of 225°C, and a rotation of the friction disc. False twisting was performed while stretching at several 9,375 rpm and processing speed of 900 m/min. The results are shown in Table-2.

【table】

[Table] Compounds in the table are shown in Table-1.
It is the same as the compound described in .
From the above results, the following can be said. Even with the treatment composition of the present invention, when the applied amount was in the range of 0.1 to 0.5%, heater scum was very small and processability was good, but when the applied amount exceeded 0.5%, heater scum tended to increase slightly. Examples 10, 11, Comparative Examples 13 to 15 Table 3
A composition as described in 1. was applied in an aqueous system at an emulsion concentration of 10% (by weight) so that the amount of pure adhesion was 0.3%. The obtained 78 denier/36 filament undrawn yarn was stretched using a circumscribed friction false twisting device equipped with a urethane rubber disc with a diameter of 45 mm and a hardness of 88° at a stretching ratio of 1.5 times, a heater temperature of 225°C, and a rotation of the friction disc. False twisting was performed while stretching at several 9,375 rpm and processing speed of 900 m/min. The results are shown in Table-3.

【table】

[Table] *Compounds marked with 〓〓〓〓〓〓 in the table are shown in the table -
It is the same as the compound described in 1.
From the above results, the following can be said. The present invention had less heater scum and sufficient processing stability. On the other hand, in Comparative Examples, the molecular weight of the polyether component [A] was as high as 20,000, which resulted in increased heater scum and poor processing stability. A comparative example is a treatment agent proposed in Japanese Patent Publication No. 52-47079, but the anion component is 3%.
However, due to the lack of the [B]-[] component, both heater scum and processing stability were poor. A comparative example is a treatment agent proposed in JP-A No. 50-155796, which contains 3% of the anionic component but lacks the [B]-[] component and contains 10% of the nonionic activator. As a result, hiter scum increased and processing stability was poor.

Claims (1)

[Claims] 1 A polyester multifilament having a birefringence index of 0.03 to 0.08 and an elongation of 30 to 250% as a synthetic fiber yarn is treated with the following treatment composition in a range of 0.10 to 0.10.
Highly drawn yarn for friction false twisting characterized by having 0.50% (weight) added. [Treatment composition] Substantially consists of a polyether lubricant and an anionic component, in which case [A] The polyether lubricant has a copolymerization ratio of propylene oxide and ethylene oxide of 35/
65-90/10 (mol%) with average molecular weight of 1000-
15,000, and is blended at least 96% (by weight) in the treatment composition, and [B] the anionic component has [] double bonds. A long-chain monoolefin dicarboxylic acid obtained by adding an olefin having 8 to 18 carbon atoms to a dicarboxylic acid or its anhydride, and/or the monoolefin dicarboxylic acid has one molecule in the molecule with the corresponding dicarboxylic acid anhydride. Alkali metal salts, ammonium salts, organic amine salts, or mixtures thereof of ester derivatives having at least one carboxyl group obtained by reacting the above compounds with hydroxyl groups [] Higher alkyl or aralkyl polyesters Alkali metal salts, ammonium salts, organic amine salts of phosphoric acid esters containing an oxyalkylene ether group, and/or amine salts, organic amine salts of sulfonate compounds having at least one alkyl group and sulfonic acid group in the molecule. , consisting of at least one alkali metal salt, and [ ] and [ ] and/or [ ] are blended in the treatment composition in an amount of 0.5% (by weight) or more and 4.0% (by weight) or less. treatment composition. 2 Birefringence rate is 0.03 to 0.03 as a polyester-based strip
0.08 and has an elongation of 30 to 250% and is coated with the following treatment composition and subjected to stretching friction false twisting at a speed of 400 m/min or more. Method. [Treatment composition] Substantially consists of a polyether lubricant and an anionic component, in which case [A] The polyether lubricant has a copolymerization ratio of propylene oxide and ethylene oxide of 35/
65-90/10 (mol%) with average molecular weight of 1000-
15,000, and is blended at least 96% (by weight) in the treatment composition, and [B] the anionic component has [] double bonds. A long-chain monoolefin dicarboxylic acid obtained by adding an olefin having 8 to 18 carbon atoms to a dicarboxylic acid or its anhydride, and/or the monoolefin dicarboxylic acid has one molecule in the molecule with the corresponding dicarboxylic acid anhydride. Alkali metal salts, ammonium salts, organic amine salts, or mixtures thereof of ester derivatives having at least one carboxyl group obtained by reacting the above compounds with hydroxyl groups [] Higher alkyl or aralkyl polyesters Alkali metal salts, ammonium salts, organic amine salts of phosphoric acid esters containing an oxyalkylene ether group, and/or amine salts, organic amine salts of sulfonate compounds having at least one alkyl group and sulfonic acid group in the molecule. , at least one alkali metal salt, and [ ] and [ ] and/or [ ] are blended in the treatment composition in an amount of 0.5% (by weight) or more and 4.0% (by weight) or less. treatment composition.