JP3099472B2 - Synthetic fiber treatment agent - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic fiber treating agent. More specifically, the present invention relates to a treatment agent for high-strength synthetic fibers for industrial applications, particularly for high-strength fabrics such as airbags. The present invention relates to a synthetic fiber treating agent capable of improving the weaving property in a weaving process such as weaving.

[0002]

2. Description of the Related Art Conventionally, it has been known to apply a synthetic fiber treating agent comprising a composition obtained by mixing a thiodipropionate ester and castor oil or a hydrogenated castor oil with an ethylene oxide adduct to synthetic fibers, for example, as disclosed in 54-14721
No. 4 publication.

[0003] In the case of the synthetic fiber treating agent described in JP-A-54-147214, the heat resistance is excellent, and the synthetic fiber to which the treating agent is added improves the yarn-making properties and can be drawn at a high draw ratio. It is possible to obtain a high-strength yarn as much as possible, to reduce smoke in the synthetic fiber production process, and to improve the working environment.

On the other hand, as a method for improving the yarn forming property of synthetic fibers, it is known from JP-B-36-12230 to entangle the individual yarns forming the synthetic fibers.

The present inventors have applied the synthetic fiber treating agent described in JP-A-54-147214 in the synthetic fiber production process,
An attempt was made as to whether or not the yarn entanglement technique described in JP-A-6-12230 was used, whereby the yarn-making property was further improved, high-magnification stretching was possible, and a high-strength yarn was obtained.

However, the above-mentioned Japanese Patent Application Laid-Open No. 54-147 discloses
Even if both the synthetic fiber treating agent described in Japanese Patent Publication No. 214 and the technique described in the above-mentioned Japanese Patent Publication No. 36-12230 are combined, it is possible to obtain a synthetic fiber having both the functions and effects. I found out that I couldn't.

One of the biggest reasons is that the above-mentioned Japanese Patent Application Laid-Open
Synthetic fibers to which the synthetic fiber treating agent described in JP-A 4-147214 has been imparted have inferior entanglement properties and entanglement retention properties of each single yarn, which is the effect of the entanglement described in JP-B-36-12230. Was not sufficiently exhibited.

Further investigation of the cause revealed that the entanglement effect was insufficient due to the low coefficient of friction between the single yarns.

As another disadvantage, Japanese Patent Application Laid-Open No.
In the case of using the synthetic fiber treating agent described in Japanese Patent No. 147214, there is a problem that tar adheres to the surface of the heating roller and stable operation cannot be performed for a long time. Furthermore, in the case of the synthetic fiber treating agent described in JP-A-54-147214, there is a problem that scum is generated when the treating agent comes into contact with water due to poor compatibility with water. It has been found that the synthetic fiber to which is applied is not suitable for use in weaving in a water jet loom.

[0010]

SUMMARY OF THE INVENTION An object of the present invention is to increase the coefficient of friction between single yarns of a synthetic fiber, to provide excellent interlacing and retention of single yarns, and to provide heat resistance, smoothness and yarn. It is an object of the present invention to provide a synthetic fiber treating agent which has good smoothness between a metal roller and a metal roller, further prevents tar from being easily deposited on the surface of the heating roller, and can stably operate for a long time.

Synthetic fibers to which the synthetic fiber treating agent having the above-mentioned properties is applied have few yarn breaks and single yarn breaks in the spinning process, and a high-quality high-quality yarn can be obtained. The synthetic fiber to which the synthetic fiber treating agent having the above properties is applied, for example, when weaving in a water jet loom, does not generate scum due to the treating agent attached to the synthetic fiber, and is easily dissolved in water. Therefore, weaving is performed extremely smoothly.

Still another object of the present invention is to provide a treating agent for synthetic fibers which can be efficiently deoiled in a scouring step after weaving the synthetic fibers.

[0013]

According to the present invention, an ethylene oxide having a molecular weight of 600 to 1000 is prepared by adding 20 to 50 ethylene oxide.
% By weight of a divalent fatty acid ester compound (A), a polyether polymer activator (B) having a molecular weight of 1,000 to 5,000 and a higher alcohol ethylene oxide having a molecular weight of 400 to 600 and containing 40 to 70% by weight of an alkylene oxide. The adduct (C) is prepared by adding (A) to
The mixture obtained by mixing 5% by weight, (B) in the range of 5 to 20% by weight, and (C) in the range of 20 to 40% by weight is 9%.
It comprises a synthetic fiber treating agent characterized in that it occupies at least 0% by weight.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Regarding the synthetic fiber treating agent according to the present invention,
This will be described in detail below.

The synthetic fiber treating agent according to the present invention comprises 50 to 65% by weight of a divalent fatty acid ester compound (A), 5 to 20% by weight of a polyether polymer activator (B), and a higher alcohol ethylene oxide adduct. (C) A mixture containing 20 to 40% by weight of a mixture as a main component of 90% by weight or more.

The divalent fatty acid ester compound (A) is
20 ethylene oxide having a molecular weight of 600 to 1000
About 50% by weight, specifically, dioctyl alcohol E
O ₃ adipate, thiodi and di lauryl alcohol EO ₃ adipate and adipic acid esters, such as dioleyl alcohol EO ₃ adipate and sebacic esters, di octyl alcohol EO ₃ thiodipropionate and dioleyl alcohol EO ₃ thiodipropionate Propionates are preferably used.

Divalent fatty acid ester compound (A) (hereinafter referred to as
Compound (A)) has a molecular weight of 600 to 1000
, The mixture of the treating agent component and water in the weaving process maintains a low viscosity, for example, 10 cp or less at 20 ° C.

When the molecular weight of ethylene oxide in the compound (A) is 500 or less, the synthetic fiber to which the synthetic fiber treating agent has been applied has a low extreme pressure property, reduces the yarn-forming property, and cannot draw the synthetic fiber at a high magnification. A high-strength synthetic fiber having a weight of 7 g / d or more cannot be obtained. Further, when the molecular weight of ethylene oxide exceeds 1,000, friction with a drawing roller or the like, that is, friction against metal increases, and the sliding between the roller surface and each single yarn of the synthetic fiber due to high-magnification drawing is not performed smoothly. Therefore, single yarn breakage is likely to occur. That is, the molecular weight of ethylene oxide is set to 600
By setting it to 1000, it is possible to perform high-magnification stretching while stabilizing the spinnability, and to obtain a high-strength synthetic fiber.

When the content of ethylene oxide in the compound (A) is less than 20% by weight, the viscosity becomes high when the treating agent component and water are mixed in the weaving process, and it becomes difficult to treat this mixture. On the other hand, the compound (A)
When the content of ethylene oxide in the medium exceeds 50% by weight, the synthetic fiber to which the synthetic fiber treating agent has been applied has a low extreme pressure property, and the spinnability is reduced, and the synthetic fiber cannot be drawn at a high magnification. It is difficult to make a synthetic fiber high in strength of 7 g / d or more. Therefore, the content of ethylene oxide in the compound (A) is in the range of 20 to 50% by weight.

The polyether polymer activator (B) (hereinafter referred to as activator (B)) has a molecular weight of 1,000 to 50.
00, preferably 2000 to 3000. When the molecular weight of the activator (B) is less than 1,000, a large amount of smoke is generated when the synthetic fiber is drawn at a high magnification, and the environment is remarkably deteriorated, and the surface of a heating body such as a drawing roller is easily stained. Single yarn breakage and yarn breakage of the synthetic fiber during drawing occur, making it difficult to smoothly obtain a high-strength synthetic fiber.

On the other hand, if the molecular weight of the activator (B) exceeds 5,000, the spreadability of the treating agent on the surface of the synthetic fiber is small when the treating agent for synthetic fiber is applied to the synthetic fiber.
Spots of the treatment agent tend to occur. Therefore, single yarn breakage, yarn breakage and separation of the single yarn are likely to occur in a portion where the amount of the synthetic fiber treating agent attached is small, and the yarn-making properties are poor.
The quality of the obtained synthetic fibers is not uniform.

The activator (B) is, for example, a nonionic activator obtained by reacting a compound selected from a higher alcohol alkylene oxide adduct and a polyhydric alcohol alkylene oxide adduct with a monocarboxylic acid and / or a dicarboxylic acid. It is.

The ethylene oxide adduct of the polyhydric alcohol is, for example, an alkylene oxide (ethylene oxide, propylene oxide, butylene oxide, etc.) added to a polyhydric alcohol, and is, for example, a hydrogenated castor oil ethylene oxide adduct. Castor oil ethylene oxide adduct, sorbitol ethylene oxide adduct, trimethylolpropane ethylene oxide adduct and the like. Among them, a hydrogenated castor oil ethylene oxide adduct, a sorbitol ethylene oxide adduct or a higher alcohol alkylene oxide adduct is preferred.

Examples of the monocarboxylic acid include caproic acid, caprylic acid, lauric acid, palmitic acid, stearic acid, oleic acid and isostearic acid. Preferably, palmitic acid, stearic acid,
Oleic acid and isostearic acid.

As the dicarboxylic acid, maleic acid,
Examples thereof include adipic acid, thiodipropionic acid, sebacic acid, dodecanoic acid and brassic acid, and preferably maleic acid, adipic acid and propionic acid.

The content of the alkylene oxide in the activator (B) is preferably from 40 to 70% by weight. When the content of the alkylene oxide is less than 40% by weight, the proportion of hydrocarbons is low and the proportion of hydrocarbons is increased. When hot drawing is performed at a high magnification, contamination of the surface of a heating body such as a heat roller is significantly generated, and the amount of smoke is increased.

On the other hand, when the content of the alkylene oxide in the activator (B) exceeds 70% by weight, the friction between the synthetic fiber and the drawing roller, that is, the friction against metal increases, so that the synthetic fiber cannot be drawn at a high magnification. Synthetic fibers cannot be made strong.

The higher alcohol ethylene oxide adduct (C) (hereinafter referred to as compound (C)) has a molecular weight of 400 to 600. If the molecular weight is less than 400, smoke is generated when the synthetic fiber is hot drawn at a high magnification. In addition to significantly deteriorating the environment, dirt on the surface of the heating element such as a drawing roller is likely to occur, and this dirt causes single yarn breakage and yarn breakage of the synthetic fiber being drawn, thereby obtaining a high-strength synthetic fiber. Can not.

On the other hand, if the molecular weight of the compound (C) exceeds 600, the friction between the single yarns of the synthetic fiber, that is, the friction between the single yarns becomes low, so that the entanglement property decreases and the entanglement retention property decreases. In the weaving process, the ends of the single yarns that have been broken in the weaving process project on the surface of the woven base fabric, and when the elastomer is applied to the base fabric, a large amount of the elastomer adheres to the protruding portion of the single yarn end. On the contrary, the peripheral portion may become thinner on the contrary, or the elastomer may not exist in the shaded portion of the portion where the single yarn end protrudes, and when such an elastomer coated fabric is used for the airbag,
When the folded fabric is rapidly expanded with the inflated air, an obstacle such as partial rupture occurs, and the function as an air bag cannot be satisfied.

The higher alcohol in the compound (C) includes, for example, octyl alcohol, 2-ethylhexyl alcohol, decyl alcohol, lauryl alcohol, myristyl alcohol, oleyl alcohol, and isostearyl alcohol.
-Ethylhexyl alcohol, decyl alcohol and lauryl alcohol are preferably used.

The compounding ratio of the compound (A), the activator (B) and the compound (C) in the mixture constituting the main component of the synthetic fiber treating agent of the present invention is such that the compound (A) is 50%.
６５65% by weight, the activator (B) in the range of 5-20% by weight, and the compound (C) in the range of 20-40% by weight.

When the compounding ratio of the compound (A) in the mixture is less than 50% by weight, the friction between the surface of the synthetic fiber and the drawing roller, that is, the friction against metal becomes high when the synthetic fiber is drawn at a high magnification. The high draw ratio of the synthetic fiber is not performed smoothly, so that single yarn breakage is likely to occur, and a high-strength synthetic fiber cannot be obtained.

On the other hand, if the compounding ratio of the compound (A) in the mixture exceeds 65% by weight, the entanglement property and the entanglement retention property of the synthetic fiber are deteriorated, so that the yarn is cracked during drawing and obtained in the weaving process. The end of the single yarn that has been broken is likely to protrude from the surface of the obtained fabric, and it is difficult to obtain a high-quality fabric.

When the blending ratio of the activator (B) in the mixture is less than 5% by weight, yarn cracking, generation of fluff due to single yarn breakage, and yarn breakage are likely to occur in the synthetic fiber drawing step.
High quality high-strength synthetic fibers cannot be obtained.

On the other hand, when the blending ratio of the activator (B) in the mixture exceeds 20% by weight, the friction between the single yarns of the synthetic fibers decreases, the confounding property decreases, and the confounding retention property decreases. In the weaving process, the ends of the single yarns that are broken are protruded, and a high-quality fabric cannot be obtained.

When the compounding ratio of the compound (C) in the mixture is less than 20% by weight, the friction between the single yarns of the synthetic fibers is low, the confounding property and the confounding property are low, and the single fibers generated during stretching are low. Thread breaks protrude from the surface of the fabric obtained in the weaving process, and a high-quality fabric cannot be obtained.

On the other hand, if the compounding ratio of the compound (C) in the mixture exceeds 40% by weight, the synthetic fiber cannot be stretched at a high magnification, and single yarn breakage and yarn breakage increase.

As described above, the mixing ratio of the compound (A), the activator (B) and the compound (C) in the mixture greatly affects the spinnability and the quality of the woven fabric.

The mixture is a main component of the synthetic fiber treating agent, and accounts for 90% by weight or more of the entire synthetic fiber treating agent, so that the yarn forming property of the synthetic fiber and the weaving property of the obtained synthetic fiber can be improved. Is maintained, and the action of each compound forming the compound (A), the activator (B) and the compound (C) contained in the mixture is sufficiently exerted.

As a method for applying the synthetic fiber treating agent according to the present invention to the fiber, a non-aqueous oil agent or emulsified with water to form an emulsion treating agent is used in a spinning step or a drawing step using a roller or a guide oiling device. There is a method of giving.

The synthetic fiber treating agent according to the present invention has an extreme pressure property,
It has excellent lubricity and heat resistance.
Alternatively, it is provided in a processing step, and is particularly suitable for high-strength synthetic fibers for industrial materials such as nylon and polyester.

[0042]

EXAMPLES The evaluation in each of the examples and the comparative examples was performed and indicated by the following method.

Stretchability: It is indicated by the number of yarn breaks generated during stretching of 1 ton of nylon 66 filament by weight of polymer.

Smoke emission property: The smoke emission state of the hot roller during stretching was visually observed. ；: No smoke generated △: almost no smoke generated ×: much smoke generated Dirt: The state of dirt on the hot roller during stretching was observed. ；: No dirt △: little dirt x: lots of dirt Yarn cracking: The state of yarn cracking during stretching was visually observed. ○: almost no yarn cracking ×: many yarn cracks Friction between yarns: ○: friction coefficient 0.26 or more △: friction coefficient 0.25 to 0.26 ×; friction coefficient 0.25 or less A pin to which a load of 100 g is applied is hooked on the untwisted yarn, and the confounding property is calculated based on the distance moved by the pin.

Weaving property: Judgment based on weaving efficiency. 95% or more is regarded as good.

Oil drop-off property: Judged by remaining finger ratio before and after immersion in water. Those that fall easily when immersed in water are considered good.

Examples 1 and 2 and Comparative Examples 1 to 4 Nylon 66 filaments of 840 denier and 132 filaments were melt-spun by a conventional method, and a treatment agent having the composition shown in Table 1 was applied to the obtained yarn by a roller lubrication method. After applying 1% by weight to the yarn, 200
The film was subjected to multi-stage thermal stretching at a temperature of 5 ° C. and a stretching ratio of 5 using a hot roller.

The details of each symbol of the treating agent component in Table 1 are as shown below. A1: dilauryl alcohol EO ₃ thiodipropionate A2: dioctyl alcohol EO ₂ adipate A3: 2-ethylhexyl palmitate A4: dioleyl adipate B1: hardened castor oil EOA molecular weight 2000 B2: hardened castor oil EOA Molecular weight: 2,000 thiodipropionate B3: sorbitol EOA molecular weight: 850 C1: lauryl alcohol EO ₅ C2: isostearyl alcohol EO ₅ C3: lauryl alcohol PO ₁₂ EO ₁₅

[0049]

[Table 1]

As a result of the above evaluation, the results shown in Table 2 were obtained. As is evident from Table 2, Examples 1 and 2 have an effect that remarkably improved stretchability, entanglement, and ability to fall off into water, as compared with Comparative Examples 1 to 4.

[0051]

[Table 2]

Examples 3 and 4 and Comparative Examples 5 to 8 A nylon 66 filament yarn of 840 denier and 132 filaments was melt-spun by a conventional method, and a treatment agent having the composition shown in Table 3 was supplied to the obtained yarn by roller lubrication. After applying 1% by weight to the fiber by the method, 20
Multi-stage hot stretching was performed at 0 ° C. with a stretching ratio of 5 using a hot roller. The amount of the treatment agent attached to the fibers was 1.0% by weight. The smoke-generating property with a hot roller at the time of stretching, the stained state of the hot roller, and the stretchability (number of yarn breaks during stretching) were measured.

The details of each symbol of the treating agent component in Table 3 are as shown below. A1: dilauryl alcohol EO ₃ thiodipropionate A4: diisostearyl alcohol EO ₃ thiodipropionate A5: oleyl oleate A6: dioleyl thiodipropionate B4: hardened castor oil EOA molecular weight 1300 B5: hydrogenated castor oil EOA molecular weight: 2000 adipic acid / stearic acid ester B3: sorbitol EOA molecular weight: 850 C4: higher alcohol EO ₇ C5: _C12,13 alcohol EO ₃ PO ₅ C6: lauryl alcohol EO ₂

[0054]

[Table 3]

As a result of the above evaluation, the results shown in Table 4 were obtained. As is evident from Table 4, Examples 3 and 4 according to the present invention are superior in stretchability and dropping-off property to water as compared with Comparative Example 5, and superior in entanglement and heat resistance as compared with Comparative Example 6, Compared with Comparative Example 8, stretchability and yarn cracking during stretching are excellent.

[0056]

[Table 4]

Examples 5 and 6, Comparative Examples 9 to 12 Nylon 66 filament yarn of 840 denier and 132 filaments was melt-spun by a conventional method, and a treatment agent having the composition shown in Table 5 was supplied to the obtained yarn by roller lubrication. After applying 1% by weight to the fiber by the method, 20
Multi-stage hot stretching was performed at 0 ° C. with a stretching ratio of 5 using a hot roller. The amount of the treatment agent attached to the fibers was 1.0% by weight. The smoke-generating property with a hot roller at the time of stretching, the stained state of the hot roller, and the stretchability (number of yarn breaks during stretching) were measured.

The details of each symbol of the treating agent component in Table 5 are as shown below. A7 ... dilauryl alcohol EO ₂ adipate A8 ... dioctyl alcohol EO ₃ thiodipropionate B4 ... hydrogenated castor oil EOA molecular weight 1300 B6 ... hydrogenated castor oil EOA molecular weight 2500 thiodipropionate B7 ... sorbitol EOA molecular weight 2000 oleate C7 ...... C _{12, 13} alcohol PO ₂ EO ₆ C8 ...... lauryl alcohol EO ₅ C9 ...... isostearyl alcohol EO ₇

[0059]

[Table 5]

As a result of the above evaluation, the results shown in Table 6 were obtained. As is clear from Table 6, Examples 5 and 6 according to the present invention are superior in entanglement, weaving property and water drop-off property as compared with Comparative Example 11, and stretchability and smoking property as compared with Comparative Example 12. Excellent in yarn cracking during stretching.

[0061]

[Table 6]

[0062]

By applying the synthetic fiber treating agent of the present invention, the coefficient of kinetic friction between the yarn and the metal can be reduced and the heat resistance can be improved, so that yarn breakage during yarn production can be reduced. The coefficient of friction between the yarns is increased, and the entanglement and entanglement retention of each single yarn are enhanced. Furthermore, in the water jet loom weaving process, since the scum due to the treatment agent attached to the synthetic fiber does not occur and the synthetic fiber is easily dissolved in water, the weaving is smoothly performed, and the weaving efficiency can be significantly increased.

That is, the synthetic fiber treating agent according to the present invention can be used to obtain a high-strength fiber which is free from thread breakage and can be drawn at a high magnification at the time of obtaining a high-strength synthetic fiber having a raw yarn strength of 7 g / d or more. In addition to the effects of excellent properties and weaving properties, it also has the excellent effect of obtaining a high-quality industrial fabric with no single yarn jumping out, in particular, an airbag base fabric.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) D06M 15/53 D06M 13/224

Claims (1)

(57) [Claims] 1. A divalent fatty acid ester compound (A) containing 20 to 50% by weight of ethylene oxide having a molecular weight of 600 to 1,000, a polyether polymer activator (B) having a molecular weight of 1,000 to 5,000 and a molecular weight of 400 ~
Higher alcohol ethylene oxide adduct (C) containing 40 to 70% by weight of alkylene oxide at 600
The above (A) is 50 to 65% by weight, and the above (B) is 5 to 65% by weight.
20% by weight, and a mixture obtained by mixing the above (C) in the range of 20 to 40% by weight accounts for 90% by weight or more of the treating agent for synthetic fibers.