JPS6285081A - Oil agent for treating synthetic fiber - 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 Application Field] The present invention relates to an oil for treating synthetic fibers (7), and more specifically, to an oil agent for treating synthetic fibers (7).
A high-temperature heater that provides smoothness and smoothness during high-speed false twisting processing, and provides high-temperature heating.
Second, it relates to an oil for treating synthetic fibers in which almost no scum accumulation is observed.

The purpose of the present invention is to reduce the frictional fluctuation with the contact body when spinning raw yarn for false-twisted yarn at high speed, and also to reduce the frictional resistance and suppress the tension fluctuation during high-speed false-twisting. An object of the present invention is to provide an oil agent for treating synthetic fibers that can significantly reduce fuzz.

[Prior art 1] Conventionally, when producing a false twisted yarn, it is wound at a speed of 800 to 1500 m/min by a known melt spinning method, and the undrawn yarn is stretched to obtain a drawn yarn, which is then subjected to false twist bulking processing. However, in recent years, the spinning speed has been gradually increasing for the purpose of improving productivity, and with this, the following two major problems have become apparent.

[Problems to be Solved by the Invention] The first problem is that as the spinning speed increases, it becomes difficult to uniformly adhere the oil to the fiber threads. If the amount of oil applied to the yarn is not uniform, the binding property will be poor, the quality of the yarn will be uneven, and dyeing spots, white powder, fuzz, etc. will be likely to occur. In addition, the shape of the pancage at the time of winding the yarn becomes poor, and the unwinding property in the subsequent false twisting process becomes poor, leading to yarn breakage.

The second problem is that as the spinning speed increases, the contact friction resistance with the lubricant application device and guide increases, the spinning tension increases, the strain inside the yarn increases, and the package becomes a string shape. It has the disadvantage of causing form defects. Furthermore, since the yarn is tightened with such strong force, there is a difference in the yarn quality between the inner layer and the outer layer, which results in a difference in dye density in the final product when false twisting is performed.

On the other hand, not only the spinning speed but also the false twisting speed continues to increase.

False twisting, which uses a spindle as a false twister, has traditionally been a common method of imparting bulk to thermoplastic synthetic fibers such as polyester and nylon, but in recent years, a method of false twisting that uses a spindle as a false twister has been developed to improve productivity at a lower cost. Stretch friction false twisting and other high-speed processing methods are being developed that facilitate high-speed processing and yield relatively high-quality textured yarns, but the higher the processing speed, the larger the processing machine becomes. Since the number of areas where the yarn is subjected to friction increases dramatically, it is necessary to further improve smoothness and prevent fuzzing and yarn breakage.

In recent years, as the trend toward differentiated products has strengthened, fine denier yarns have become more and more available. Especially with fine denier yarns, slight differences in the frictional force that the yarn receives can cause differences in the elongation of the supply system. This can lead to differences in thread quality and denier between the spindles, which can lead to big problems.

In addition, when high-speed machining is required, the heater length becomes longer,
In addition, since the temperature of the heater is higher than that of the conventional heater, tar-like substances accumulate significantly on the heater. Conventionally, synthetic ester lubricants, mineral oils, and vegetable oils have been used, but although these lubricants have excellent smoothness, they can cause a large amount of tar-like material to accumulate on the heater, or in extreme cases, Tar may also run down the grooves of the heater. Therefore, as a method to reduce the amount of tar-like substances that accumulate on the heater, there is a method to reduce the amount of tar-like substances that accumulate on the heater.
Alternatively, attempts have been made to select materials with good heat resistance that do not turn into tar at all. In particular, recently there has been a proposal to use polyethers made of polyoxyethylene-polyoxypropylene copolymers themselves, which have been passed through the above-mentioned method. Examples of these include JP-A-48-98194 and JP-A-48-6429.
No. 4, JP-A-49-62724, JP-A-48-227
There are issues such as No. 93. These polyethers have a temperature of 1
At temperatures above 80℃, it hardly decomposes, but at temperatures above 180℃, especially above 200℃, it thermally decomposes rapidly.
Since it has the advantage of not leaving any residual liquid, it tends to be used favorably these days.

However, when spinning at a high speed of 3,000 m/min or more and false-twisting the resulting yarn at a high speed of 400 m/min or more, these conventionally proposed polyethers are Due to insufficient wettability, there is a large tension fluctuation during spinning and winding and yarn processing, and there is a tendency for fraying and yarn breakage to occur, so it is not necessarily something that should be added.

[Means for Solving the Problems] Therefore, the present inventors created a yarn with less heater tar in the high-speed spinning process and the high-speed false twisting process, reducing fuzz and yarn breakage, and achieving high quality with no difference between spindles. The present invention was arrived at as a result of intensive studies to obtain a processing agent.

That is, the present inventors attempted to improve polyether compounds, which have recently come to be used favorably as the main component of oil agents for false-twisted yarns.

As a result, by incorporating a compound in which the terminal OH group of the polyether is alkoxylated by a known method into the oil agent, the lubricity of the conventional polyether compound can be improved, and the fluff and
An oil agent for false-twisted yarn that reduces yarn breakage and is less likely to cause heater cooling has been obtained.

However, recent demands for improved productivity have become stricter, and the performance required of Ikioi lubricants has also become more sophisticated, creating a need to further reduce fuzz and thread breakage. Therefore, as a result of intensive studies, the present inventors have determined that synthetic fiber treatment can satisfy the required performance by using a specific polyether ester compound in a specific ratio in addition to a polyether compound in which the terminal OH group is alkoxylated. I was able to obtain the oil for use.

Furthermore, this polyether ester compound does not exhibit the effect of reducing fuzz and thread breakage only when combined with a polyether compound in which the terminal O1l group is alkoxylated; It was found that it is sufficiently effective even when used in combination with a polyether compound that is not used.

That is, the present invention combines one or more compounds represented by the following general formula (1) and one or more compounds represented by the following general formula (2) in a weight ratio of 99/1. ~50
The object of the present invention is to provide an oil agent for treating synthetic fibers, which is characterized in that it contains a synthetic fiber treatment oil agent in a proportion of 150%.

A(cR'o)kR)t n+(2(
In 1), A represents all residues excluding active hydrogen from a compound having one or more active hydrogen, and l? '0' means R' has 2 to 4 carbon atoms
an alkylene oxide group which is an alkylene group, P is hydrogen or an alkyl group having 1 to 4 carbon atoms, k is 3 to 200, and L is equal to the number of active hydrogens in the active hydrogen compound) 1) f21 R+( CO(RzO)-R3)- (In formula (2), R+ represents a residue obtained by removing a carboxyl group from a compound having 5 to 22 carbon atoms having one or more carboxyl groups, and LO represents a residue in which R2 has 2 to 4 carbon atoms. an alkylene oxide group which is an alkylene group, R3 is hydrogen or has 1 to 4 carbon atoms
The number of alkyl groups is 3 to 50, and n is equal to the number of carboxyl groups in the carboxyl compound. ) The compound represented by the general formula (1) according to the present invention is a conventionally known compound, that is, a compound obtained by adding an alkylene oxide having 2 to 4 carbon atoms to a compound having one or more active hydrogens, or a nuclear compound. Refers to a compound that has been alkoxylated by a conventionally known method.

Examples of the compound having one or more active hydrogens include various hydroxy compounds, amino compounds, mercapto compounds, carboxyl compounds, etc. Among them, hydroxy compounds having 1 to 6 carbon atoms are preferred. in particular,
methanol, ethanol, n-propyl alcohol,
Isopropyl alcohol, n-butanol, isobutyl alcohol, amyl alcohol, hexyl alcohol,
Monohydric alcohols such as cyclohexyl alcohol; neopentyl alcohol, ethylene glycol, propylene glycol, 1.3-butanediol, 1.4-butanediol, 1.6-hexanediol, hexyl/glycol, thiodiglycol, etc. dihydric alcohol;
Alternatively, hydroxy compounds such as trihydric or higher alcohols such as glycerin, trimethylolpropane, trimethylolethane, diglycol, sorbitan, and sorbitol are preferable. The alkylene oxides may be added alone or in a mixture. Further, when adding the alkylene oxides in a mixed manner, either a random addition mode or a block addition mode may be used. The alkylene oxide is preferably a mixed alkylene oxide of propylene oxide (PO) and ethylene oxide (EO),
The PO/EO ratio is preferably 9515 to 5/95,
More preferably it is 90/10 to 30/70. Furthermore, the hydroxy compound is not limited to the above-mentioned alcohols and the like.

The compound represented by the general formula (2) is a compound obtained by adding an alkylene oxide having 2 to 4 carbon atoms to a compound having one or more carboxyl groups, or a compound having one or more carboxyl groups added with an alkylene oxide having 2 to 4 carbon atoms, or
It refers to a compound in which the H group is alkoxylated by a known method.

Alternatively, an alkylene oxide having 2 to 4 carbon atoms is added to an alkylene glycol having 2 to 4 carbon atoms or a hydroxy compound having 1 to 4 carbon atoms, and then an esterification reaction is carried out with a compound having one or more carboxyl groups by a known method. It can be obtained by

The compound having one or more carboxyl groups referred to here is
Saturated fatty acids such as valerian acid, caproic acid, caprylic acid, pelargonic acid, capric acid, lauric acid, myristic acid, valmitic acid, stearic acid, arachidic acid, henic acid; oleic acid, elaidic acid, Unsaturated fatty acids such as lysyllic acid, gadoleic acid, erucic acid, linoleic acid, and linolenic acid; tricarboxylic acids such as glucuric acid, adipic acid, pimelic acid, cechinic acid, phthalic acid; Examples include trivalent carboxylic acids, which have merit, but are not limited to these carboxyl compounds.

If the number of moles of alkylene oxide added to the compound represented by the general formula (1) is less than 3, it will volatilize and scatter in the heater of the false-twisting machine, making stable false-twisting difficult. On the other hand, if k is larger than 200, the smoothness will deteriorate, making it difficult to achieve the object of the present invention.

The m of the compound represented by the general formula (2) is preferably 3 or more for the same reason as the general formula (1), but if it is larger than 50, heater cooling will occur more often and the object of the present invention cannot be achieved. This is not desirable because it will become a national disaster.

Furthermore, for the same reason, the blending ratio (weight ratio) of the compound represented by the general formula fl) and the compound represented by the general formula (2) in the oil agent of the present invention is 99/1 to 50150, preferably 9
8/2 to 70/30.

The synthetic fiber processing oil of the present invention exhibits excellent smoothness, which is not found in conventional oils, when applied to yarn that is subjected to false twisting at high speeds of 400 m/min or higher (for example, friction false twisting, which has been developed in recent years). Although the remarkable effects that are characteristic of the present invention can be obtained, it goes without saying that satisfactory effects can also be obtained with the conventional false twisting process. Furthermore, it exhibits excellent performance not only for false twisting processing but also as an oil agent for spinning, spinning, ilJi, etc.

The oil agent for treating synthetic fibers of the present invention may contain known treating agent components unless the characteristics of the present invention are omitted. Ingredients that do not have any effect when added to the treatment agent of the present invention include polyalkylene gelyl alkyl ether, polyalkylene glycol alkyl aryl ether, alkylene oxa-id mono-additive emulsifier of polyalkylene ester polyhydric alcohol, and rose Conventionally known compounds such as finsulfonyl-1, alkyl phosphate, polyalkylene glycol alkyl ether phosphate, polyalkylene glycol alkyl ether carpoquinate, fatty acid soap, alkyl sulfate, and polyalkylene glycol alkyl ether sulfate; Examples include antistatic agents, conventionally known preservatives, rust preventives, and antioxidants.

There are no particular controls for applying the processing oil of the present invention to yarns such as nylon fibers or 11-milliester fibers, but if there is less E, there will be fewer unresolved parts. A high-quality yarn with less fuzz can be obtained, and if too much is used, the thermal efficiency will decrease during heating, resulting in inefficiency, and also cause the accumulation of heater cool.
．． It is desirable that the amount is about 9,0,1 to 0.6% by weight, preferably about 0.2 to 0.5% by weight, based on N tightened threads.

The processing oil of the present invention can be used as an aqueous solution or emulsion of 3 to 35 wt. It can also be applied as a crude oil as a liquid (organic solvent).

[Examples] and [Effects of the Invention] The effects of the present invention will be explained below with reference to Examples, but the present invention is not limited thereto.

Comparative Example 1 When polyethylene terephthalate was melt-spun at a spinning speed of 3500 m/min, the oil compounded in Table 1 was added to the spun yarn as a 10% by weight aqueous emulsion so that the amount of oil deposited was 0.35% by weight. Attached. The obtained 105 denier/36 filament semi-drawn yarn was stretched at a stretching ratio of 1.4, at a stretching speed of 1000 m/min, and at a heater play of 1.
-250℃, urethane rubber circle I rotation speed 1300Or
1 because it doesn't stretch with pm? False twisting was performed.

Continuous operation for 20 days using each compounded oil,
Observe the drawn and false-twisted characteristics (fuzz, occurrence of thread breakage)
Shinoko.

From Table 1, oil agents 4 to 6 using polyether compounds with alkoxylated terminal 01) groups significantly reduced fuzz and thread breakage compared to oil agents 1 to 3, but the level was still not satisfactory. I understand that.

Example 1 Polyethylene tere/phthalate was subjected to spinning-semi-stretching-stretching false twisting using the oil shown in Table 2 under the same conditions as Comparative Example 1, and the stretching false-twisting properties (tar accumulation state on the heater plate) The dyeing properties (the occurrence of uneven dyeing after dyeing) when the obtained false twisted yarn was made into a knitted fabric were evaluated. The results are shown in Table-3.

Table 3 Oils 7 to 9 are oils for treating synthetic fibers of the present invention, and are found to be excellent in both drawing and false twisting properties and dyeing properties. As comparative examples, oil agents 10 to 1) are oil agents that use a fatty acid ester as a combined compound, or oil agents that use 50% by weight or more of a compound represented by general formula (2), so tar accumulates on the heater plate. However, it was found to be inferior in fuzz, crimp characteristics, uneven dyeing, etc.

Claims (1)

[Scope of Claims] 1 One or more compounds represented by the following general formula (1) and one of the compounds represented by the following general formula (2)
Synthetic fiber processing oil A[(R'O)_kR]_L(1) (Formula (1) In the formula, A represents a residue obtained by removing active hydrogen from a compound having one or more active hydrogen, and R'O represents a residue in which R' has 2 carbon atoms.
~4 alkylene group, R is hydrogen or an alkyl group having 1 to 4 carbon atoms, k is 3 to 200
and L is equal to the number of active hydrogens in the active hydrogen compound. ▲There are mathematical formulas, chemical formulas, tables, etc.▼(2) (In formula (2), R_1 represents the residue obtained by removing the carboxyl group from a compound having 5 to 22 carbon atoms and having one or more carboxyl groups, and R_2O represents the residue where R_2 is An alkylene oxide group which is an alkylene group having 2 to 4 carbon atoms, R_3 is hydrogen or an alkyl group having 1 to 4 carbon atoms, m is 3 to 50, and n is equal to the number of carboxyl groups in the carboxyl compound.)