JP3089763B2 - 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.
The synthetic fiber to which the treating agent has been added improves the yarn-making properties, enables high-stretching to obtain a high-strength yarn, reduces the generation of smoke in the synthetic fiber production process, and improves the working environment. is there.

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 improve the entangling and entangling retention of each single yarn, 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]

In order to achieve the above object, the synthetic fiber treating agent of the present invention has a molecular weight of 600 to 1,000 and does not contain an alkylene oxide. ), Having a molecular weight of 600 to 10
A divalent fatty acid ester compound (B) containing 20 to 50% by weight of ethylene oxide at a molecular weight of 1000 to 5
000, a polyether polymer activator (C) having a molecular weight of 400 to 600 and an alkylene oxide of 40 to 600.
(A) 15 to 50% by weight, (B) 15 to 50% by weight, (C) 5 to 20% by weight, 70% by weight of a higher alcohol ethylene oxide adduct (D) The mixture obtained by mixing (D) in the range of 20 to 40% by weight accounts for 90% by weight or more.

[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 a divalent fatty acid ester compound (A) having a molecular weight of 600 to 1000 and containing no alkylene oxide (A) of 15 to 50% by weight, a molecular weight of 600 to 1000 and an ethylene oxide of 20 to 20%. ~
Divalent fatty acid ester compound (B) 15 containing 50% by weight
-50% by weight, 5-20% by weight of a polyether polymer activator (C) having a molecular weight of 1000-5000, and 40-70 of an alkylene oxide having a molecular weight of 400-600.
A mixture of 20 to 40% by weight of a higher alcohol ethylene oxide adduct (D) containing 90% by weight or more as a main component.

The divalent fatty acid ester compound (A) containing no alkylene oxide (hereinafter referred to as compound (A)) is a divalent ester having a molecular weight of 600 to 1,000, but is not limited to 1,6-hexanediol and neopentyl graphene. Esters of equol, neopentylglycol oxypivalate and the like, and monobasic acids such as oleic acid, erucic acid, isostearic acid, lauric acid, octylic acid, etc. Acid esters,
Sebacic esters such as dioleyl sebacate and dioctyl sebacate, and dioleyl thiodipropionate.
Thiodipropionate esters such as dioctylpropionate are preferably used.

When the compound (A) has a molecular weight of 600 or less, the synthetic fiber to which the synthetic fiber treating agent has been applied has a low extreme pressure property, a low spinning property, and the synthetic fiber cannot be drawn at a high magnification. A high-strength synthetic fiber having the above properties cannot be obtained. When the molecular weight exceeds 1,000,
Friction with a drawing roller, that is, friction against metal becomes high, and sliding between the roller surface and each single yarn of the synthetic fiber due to high-magnification drawing is not performed smoothly, and single yarn breakage is likely to occur. That is, by setting the molecular weight to 600 to 1,000, it is possible to stabilize the spinnability and to perform high-magnification stretching, so that a high-strength synthetic fiber can be obtained.

The molecular weight used in the present invention is 600
Examples of the divalent fatty acid ester compound (B) (hereinafter, referred to as compound (B)) containing ethylene oxide at ~ 1000 include dioctyl alcohol EO ₃ adipate, dilauryl alcohol EO ₃ adipate and dioleyl alcohol EO ₃ adipate. Adipic acid ester, sebacic acid ester, dioctyl alcohol EO
₃ Thiodipropionate dilauryl alcohol EO ₃ Thiodipropionate and dioleyl alcohol EO ₃
And thiodipropionates such as thiodipropionate.

It is essential that the compound (B) contains ethylene oxide. If the content of ethylene oxide is less than 20% by weight, when the treating agent component and water are mixed in the weaving process, The viscosity increases, making the processing of this mixture difficult. On the other hand, when the content of ethylene oxide in the compound (B) exceeds 50% by weight, the synthetic fiber to which the synthetic fiber treating agent has been applied has a low extreme pressure property, reduces the spinnability, and can be drawn at a high magnification. Therefore, it is difficult to obtain a synthetic fiber having a high tenacity of 7 g / d or more. Therefore, the content of ethylene oxide in the compound (B) is in the range of 20 to 50% by weight. Preferably it is 30 to 45% by weight.

The polyether polymer activator (C) (hereinafter referred to as activator (C)) has a molecular weight of 1000 to 50.
00, preferably 2000 to 3000.

When the molecular weight of the activator (C) is less than 1,000, a large amount of smoke is generated when the synthetic fiber is drawn at a high magnification, the environment is remarkably deteriorated, and the surface of a heating body such as a drawing roller is easily stained. The stain causes single yarn breakage and yarn breakage of the synthetic fiber being drawn, making it difficult to smoothly obtain a high-strength synthetic fiber.

On the other hand, when the molecular weight of the activator (C) exceeds 5,000, when the synthetic fiber treating agent is applied to the synthetic fiber, the spreading property of the treating agent on the surface of the synthetic fiber is small,
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 (C) 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, and 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 (C) 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 (C) exceeds 70% by weight, the friction between the synthetic fiber and the drawing roller, that is, the friction against metal increases, and the synthetic fiber cannot be drawn at a high magnification. Synthetic fibers cannot be made strong.

The higher alcohol ethylene oxide adduct (D) (hereinafter, referred to as compound (D)) 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, when the molecular weight of the compound (D) 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 protrude from 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.

Examples of the higher alcohol in the compound (D) include 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 compound (A), the compound (B), and the compound (A) in the mixture constituting the main component of the synthetic fiber treating agent of the present invention.
The compounding ratio of the activator (C) and the compound (D) is 15 to 50% by weight for (A), 15 to 50% by weight for (B), 5 to 20% by weight for (C), and ( D) is 20
In the range of 40% by weight.

When the compounding ratio of the compound (A) and the compound (B) in the mixture is less than 50% by weight, friction between the surface of the synthetic fiber and the drawing roller, ie, metal The friction is increased, and the high draw ratio of the synthetic fiber is not smoothly performed. As a result, 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) and the compound (B) in the mixture exceeds 65% by weight, the entanglement property and the entanglement retention property of the synthetic fiber are deteriorated, and the yarn breaks during drawing, and In addition, the ends of the broken single yarns easily protrude from the surface of the fabric obtained in the weaving process, and it is difficult to obtain a high-quality fabric.

If the blending ratio of the activator (C) 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 process of drawing synthetic fibers.
High quality high-strength synthetic fibers cannot be obtained.

On the other hand, when the blending ratio of the activator (C) 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 (D) in the mixture is less than 20% by weight, the friction between the single yarns of the synthetic fibers is reduced, the confounding property and the confounding retention 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, when the compounding ratio of the compound (D) 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 compound (B), the activator (C) and the compound (D) in the mixture greatly affects the spinnability and the quality of the woven fabric.

The above-mentioned 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 compound (B), the activator (C) and the compound (D) contained in the mixture is sufficiently exerted.

As a method for applying the synthetic fiber treating agent according to the present invention to a 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, and is provided in the fiber production and / or processing steps. It is particularly suitable for high-strength synthetic fibers for industrial materials such as nylon and polyester.

[0043]

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. Yarn cracking: The state of yarn cracking during stretching was visually observed. ；: Almost no yarn cracking ×: Many yarn cracking Smoke-producing property: The state of smoking with a 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 stains ；: almost no stains ；: many stains Friction between yarns: ；: coefficient of friction 0.26 or more △: coefficient of friction 0.25 to 0.26 ×; coefficient of friction 0.25 or less Entangling property: A pin applied with a load of 100 g is applied to the untwisted yarn, and the entangling property is calculated based on the distance the pin has moved. Weavability: Judgment based on weaving efficiency. 95% or more is regarded as good. Oil drop-off property: Judgment based on 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 the treating agent having the composition shown in Table 1 was applied to the obtained yarn by a roller lubrication method. After adding 1% by weight, 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: Dioleyl adipate A2: Dioleyl thiodipropionate A3: 2-ethylhexyl palmitate A4: Thiodipropionate B1: Dioctyl alcohol EO ₂ adipate B2: Dilauryl alcohol EO ₃ Thiodipropion ester C1 ...... hydrogenated castor oil EOA molecular weight 2000 C2 ...... sorbitol EOA molecular weight 850 D1 ...... lauryl alcohol EO ₅ D2 ...... isostearyl alcohol EO ₅ D3 ...... lauryl alcohol PO ₁₂ EO ₁₅

[0046]

[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.

[0048]

[Table 2]

Examples 3 and 4, Comparative Examples 5 to 8 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 applied to the obtained yarn by a roller. After applying 1% by weight to the fiber by the lubrication method, 2
Multi-stage hot stretching was performed at 00 ° C. with a stretching ratio of 5 using a hot roller. 1.0% by weight of treatment agent attached to fiber
Met. Smokeability with a hot roller at the time of stretching, the state of contamination of the hot roller, stretchability (number of yarn breaks at the time of stretching), and the like were measured.

The details of each symbol of the treating agent component in Table 3 are as shown below. A5 ...... diisostearyl alcohol thio dipropionate ester A6 ...... oleyl oleate B2 ...... di lauryl alcohol EO ₃ thiodipropionate B3 ...... diisostearyl alcohol EO ₃ thiodipropionate C3 ...... hydrogenated castor oil EOA molecular weight 1300 C4 ... Hardened castor oil EOA molecular weight 2000 Adipic acid, stearic acid ester C5 ... Sorbitol EOA molecular weight 850 D4 ... Higher alcohol EO ₇ D5 ... C _12,13 alcohol EO ₃ PO ₅ D6 ... Lauryl alcohol EO _Two

[0051]

[Table 3]

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

[0053]

[Table 4]

Examples 5 and 6 and 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 applied 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. A2: Dioleylthiodipropionate A5: Diisostearyl alcohol thiodipropionate B4: Dilauryl alcohol EO ₂ adipate B5: Dioctyl alcohol EO ₃ Thiodipropionate C1: Hardened castor oil EOA molecular weight 2000 C6 ...... hydrogenated castor oil EOA molecular weight 2500 thiodipropionate C7 ...... sorbitol EOA molecular weight 2000 oleate D1 ...... lauryl alcohol EO ₅ D7 ...... C _12,13 alcohol PO ₂ EO ₆ D8 ...... isostearyl Alcohol EO ₇

[0056]

[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 entangling property, weaving property and dropping property to water as compared with Comparative Example 11, and stretchability and smoking property as compared with Comparative Example 12. Excellent in yarn cracking during stretching.

[0058]

[Table 6]

[0059]

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 yarn strength of 7 g / d or more. In addition to an excellent effect on the fabricability and weaving properties, it also has an excellent effect of obtaining a high-quality industrial fabric with no single yarn jumping out, especially an airbag base fabric.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-47-30931 (JP, A) JP-A-54-147214 (JP, A) JP-A-63-295576 (JP, A) 31898 (JP, A) JP 48-32315 (JP, B1) (58) Fields investigated (Int. Cl. ⁷ , DB name) D06M 15/53 D06M 13/224

Claims (1)

(57) [Claims] 1. A divalent fatty acid ester compound (A) having a molecular weight of 600 to 1000 and containing no alkylene oxide,
Ethylene oxide with a molecular weight of 600 to 1000
A divalent fatty acid ester compound (B) containing 〜50% by weight;
(A) a polyether polymer activator (C) having a molecular weight of 1,000 to 5,000 and a higher alcohol ethylene oxide adduct (D) having a molecular weight of 400 to 600 and containing 40 to 70% by weight of an alkylene oxide; 1
A mixture obtained by mixing 5 to 50% by weight, (B) in 15 to 50% by weight, (C) in 5 to 20% by weight, and (D) in 20 to 40% by weight is 90%. A treating agent for synthetic fibers, wherein the treating agent occupies at least 10% by weight.