TWI651447B - A method for manufacturing anti-ultraviolet nylon textile and thus obtained textile - Google Patents

Abstract

The present invention provides a method for producing an ultraviolet-resistant nylon-based textile and a textile obtained by the method. In the presence of an organic acid, an organic ultraviolet absorber and a fluorescent whitening agent are used to treat a thin nylon cloth having a weight of 25 to 60 g/m ² to allow the organic ultraviolet absorber and the fluorescent whitening agent to enter the fiber interior in large quantities. The obtained nylon-based textile has a soft hand and superior ultraviolet protection.

Description

Anti-UV nylon textile manufacturing method and textile

The invention belongs to the field of textiles and materials, and particularly relates to a nylon-based textile which is not only thin and light, but also has excellent anti-UV performance and soft hand feeling.

In the spring and summer, the outdoor temperature is high and people are more likely to sweat. Therefore, clothes made of soft and light materials with high moisture absorption properties are popular. Because the products using polyester fiber are hard to handle and the thin products using cotton fiber are low in strength, the soft and thin products are often made of nylon fiber. On the other hand, with the deterioration of the global environment in recent years, the ozone layer has been destroyed, and ultraviolet rays reaching the ground have increased. Excessive exposure to ultraviolet rays may affect health, such as sunburn, wrinkles, and sunburn. Therefore, the clothing is required to have a function of shielding ultraviolet rays.

Generally, the ultraviolet (UV) wavelength is 400 to 200 nm, and can be classified into a UVA band (320 to 400 nm), a UVB band (290 to 320 nm), and a UVC band (200 to 290 nm). Among them, the UVC band cannot be transmitted due to the inability of the ozone layer and dust in the air to pass through, but the UVA band may cause damage such as active oxidation and pigmentation, and the UVB band may cause erythema and blister dermatitis. The molecular structure of nylon fiber does not have an aromatic group that absorbs ultraviolet rays, and the ultraviolet light is extremely permeable.

For this reason, many methods have been considered, such as adding titanium dioxide during spinning, post-processing with an ultraviolet processing agent, using a high-density fabric, coating, and the like. As disclosed in the molecular structure of PET fibers, as disclosed in Japanese Patent Laid-Open No. 2004-044040 The ultraviolet ray-absorbing aromatic group has sufficient ultraviolet ray resistance as long as titanium dioxide is added during spinning, but there is a problem that the hand feels hard. Further, the ultraviolet ray absorbing agent and the fluorescent whitening agent are introduced into the fiber to increase the ultraviolet ray resistance, as disclosed in the Japanese Patent Laid-Open Publication No. Hei 8-92874, No. 2005-133282, but the processing temperature of the nylon fiber has an upper limit. It is impossible to introduce a large amount of the ultraviolet absorber into the inside of the fiber, and there is a problem that the ultraviolet ray resistance is low. As a high-density fabric, in particular, a fabric using a PET fiber containing titanium dioxide, although a high ultraviolet ray resistance can be obtained, is hard to handle. It is also possible to obtain a good ultraviolet ray resistance by applying an ultraviolet ray mask or an ultraviolet absorbing agent to one side of the fabric, but there is a problem that the hand feeling changes greatly and the weight becomes heavy.

In order to solve the above problems, an object of the present invention is to provide a method for producing a nylon fiber textile which is light and thin, soft to the touch, and excellent in ultraviolet shielding resistance, and an ultraviolet resistant nylon-based textile obtained by the method.

In order to achieve the above object, the constitution of the present invention is as follows:

(1) In the presence of an organic acid, an organic ultraviolet absorber and a fluorescent whitening agent are used to treat a thin nylon cloth having a weight of 25 to 60 g/m ² to allow the organic ultraviolet absorber and the fluorescent whitening agent to enter. Inside the fiber, an anti-UV nylon textile is obtained.

(2) The ultraviolet-resistant nylon-based textile of the above (1), wherein the cover factor of the thin nylon fabric is 1500 to 3,000.

(3) The ultraviolet-resistant nylon-based textile of (1) or (2) above, wherein the organic ultraviolet absorber is a non-reactive organic ultraviolet absorber and/or a reactive organic ultraviolet absorber.

(4) The ultraviolet-resistant nylon-based textile of the above (3), wherein the non-reactive organic ultraviolet absorbent has a structure represented by the following formula (I):

Wherein R ₁ is -H, C _1-6 alkyl, -OH, -OCH ₃ , -SCH ₃ or R ₂ is R ₃ is

(5) The ultraviolet-resistant nylon-based textile of the above (3), wherein the reactive organic ultraviolet absorbent has a structure represented by the following formula (II):

Wherein R ₄ is an alkyl group; R ₅ is -SO ₃ H or -SO ₃ X, and the X is selected from an alkali metal.

(6) The ultraviolet-resistant nylon-based textile of the above (1) or (2), wherein the fluorescent whitening agent is a stilbene type, a coumarin type, a pyrazoline type, a benzoxanthene type, and a benzodiazepine. One or more of the imine type fluorescent whitening agents.

(7) The ultraviolet-resistant nylon-based textile of the above (6), wherein the fluorescent whitening agent is a stilbene-type fluorescent whitening agent.

(8) The ultraviolet-resistant nylon-based textile of the above (1) or (2), wherein the organic acid is formic acid, acetic acid, propionic acid, lactic acid, glycolic acid, propionic acid, citric acid, oxalic acid, tartaric acid, maleic acid, and One or several of malic acid.

(9) A UV-resistant nylon-based textile obtained by the production method of the above (1).

(10) The UPF value of the ultraviolet-resistant nylon-based textile of the above (9) is 30 or more as measured according to the method of AS/NZS 4399-1996.

(11) The UPF value of the ultraviolet-resistant nylon-based textile of the above (10) is 40 or more according to the method of AS/NZS 4399-1996.

(12) The UPF value of the ultraviolet-resistant nylon-based textile of the above (11) is 50 or more according to the method of AS/NZS 4399-1996.

The nylon-based textile of the present invention is an organic ultraviolet absorber and a fluorescent whitening agent by treating a specific nylon fiber cloth with an organic ultraviolet absorber and a fluorescent whitening agent in the presence of an organic acid. The product with a UV protection factor (UPF Ultraviolet Protection Factor) of 30 or more is obtained by the method of entering the inside of the fiber.

According to the present invention, it is possible to impart a soft hand and a superior ultraviolet protection property to a lightweight textile containing nylon fibers.

The improvement of the ultraviolet ray resistance in the present invention means that the UVB band which causes short-term damage such as sunburn and the transmittance of the UVA band which causes long-term damage to the skin are reduced, and the numerical value indicates that the ultraviolet protection factor (UPF) is 30 or more. Better than 40, more preferably 50 or more.

When the UV protection factor (UPF) is 30 or more, there is no problem of short-term and long-term damage of the skin by ultraviolet rays, but nylon fabrics which are thin on the market (for example, a weight of about 40 g/m ² ) and soft, Its UPF value is about 10 or so.

The UV protection factor (UPF) of the nylon-based textile of the present invention is based on the Labsphere test method employed by the American Skin Cancer Association. The Labsphere test method used by the American Skin Cancer Association is specifically AS/NZS 4399-1996 (Australian/New Zealand Standard "Sun protective clothing-Evaluation and classification"), which is calculated by the following formula.

ε _λ : corresponding erythema generation parameter at unit wavelength

E _λ : Spectral irradiance of sunlight (w/m ² .nm)

△λ: unit wavelength (5nm)

T _λ : transmittance (%) measured every 5 nm.

In the nylon-based textile of the present invention, the nylon fiber is made of one or more of fully matt, semi-dull, and lustrous nylon fibers, and is made into a thin cloth having a basis weight of 25 to 60 g/m ² and a covering factor of 1500 to 3,000. The nylon fiber is preferably nylon 6, nylon 66, but is not limited thereto. The cross-sectional shape of the nylon fiber may be a circular shape, or may be a polygonal shape such as a triangular shape or a square shape, and the irregular cross-sectional shape may be such that the ultraviolet light is scattered, which is preferable, but is not limited thereto. From the viewpoint of improving the appearance and the like, when the nylon-based textile of the present invention is produced, other fibers such as cotton fibers, viscose fibers, wool, silk, polyester, spandex and the like can be used at the same time.

The nylon-based textile of the present invention is preferably used as a fabric for spring and summer blouses, and therefore is required to have lightness and air permeability. When the grammage exceeds 60 g/m ² , it is considered to be heavy as the above-mentioned use; and when the grammage is less than 25 g/m ² , the cloth is too thin to give a high UPF value and a strong drop is caused. In the present invention, the thickness of the thin nylon cloth is preferably from 30 to 40 g/m ² , and more excellent lightness and wearability can be obtained.

Further, when the cover factor is too small, the gap between the fibers forming the textile is too large, the ultraviolet rays are easily transmitted, and it is difficult to obtain a high UPF value; and if the cover factor is too high, the poor gas permeability is not suitable for the above use. In the present invention, the coverage factor is preferably from 1,500 to 3,000, and an excellent UPF value and good gas permeability can be obtained, and more preferably 1600 to 2,500. The calculation method of the coverage factor (CF) is as follows: CF=(DWp) ^1/2 ×MWp+(DWf) ^1/2 ×MWf

Where DWp is the warp total denier (dtex), MWp is the warp density (root/2.54 cm); DWf is the weft total denier (dtex), and MWf is the weft density (root/2.54 cm).

The invention contemplates that although the introduction of the ultraviolet absorber into the fiber can improve the ultraviolet protection performance of the textile to some extent, since the processing temperature of the nylon fiber has an upper limit, most of the use of 100 ° C, high temperature, then 110 ° C, the ultraviolet absorber can not A large amount is introduced into the inside of the fiber, and there is still a problem that the ultraviolet protection performance is low.

Therefore, in the present invention, the amorphous region of the nylon fiber is sufficiently relaxed by the method of increasing the macromolecular mobility of the nylon fiber, thereby increasing the amount of the non-reactive organic ultraviolet absorber introduced into the fiber. The compound used in the present invention for improving the mobility of macromolecules is an acid.

Although any acid has the effect of improving the macromolecular mobility inside the fiber, that is, it is also possible to use a mineral acid such as hydrochloric acid, sulfuric acid or phosphoric acid, but since the inorganic acid causes the hardening of the nylon-based textile, the present invention uses organic acid. The organic acid to be used is preferably formic acid, acetic acid, propionic acid, lactic acid, glycolic acid, tarlycolic acid, citric acid, oxalic acid, tartaric acid, maleic acid, malic acid or the like, but is not limited thereto. The organic acid to be used may be directly used as a commercially available product, or may be synthesized according to a technique known in the art, and the owf (percentage of the reagent relative to the weight of the fabric) at the time of use may be adjusted as needed, preferably in the range of 0.1 to 20% owf. Within the range of 1 to 5% owf.

In order to improve the UPF value of the nylon-based textile, the ultraviolet absorbent used in the present invention is selected not only to be compatible with the polymer of the textile to be treated, but also to satisfy other basic physical properties such as washing color fastness and light fastness. Color fastness, tear strength and other properties.

The organic ultraviolet absorber of the present invention uses at least one of a non-reactive organic ultraviolet absorber and a reactive organic ultraviolet absorber. The organic ultraviolet absorber used in the present invention may be a commercially available product or may be synthesized according to a technique known in the art, and the owf at the time of use may be adjusted as needed, for example, for a non-reactive organic ultraviolet absorber. Preferably, it is in the range of 1 to 20% owf, more preferably in the range of 2 to 6% owf; and for the reactive organic ultraviolet absorber, it is preferably in the range of 1 to 20% owf, more preferably 2~ Within the range of 6% owf.

The non-reactive organic ultraviolet absorber has a structure represented by the following formula (I):

Wherein R ₁ is -H, C _1-6 alkyl, -OH, -OCH ₃ , -SCH ₃ or R ₂ is R ₃ is

The reactive organic ultraviolet absorber has a structure represented by the following formula (II):

Wherein R ₄ is an alkyl group; R ₅ is -SO ₃ H or -SO ₃ X, and said X is selected from the group consisting of alkali metals, preferably Na.

Herein, the alkyl group has a meaning generally known in the art, which is preferably a _C1-6 alkyl group. Examples of the alkyl group of C _1-6 include a methyl group, an ethyl group, a n-propyl group, an isopropyl group, a n-butyl group, an isobutyl group, a second butyl group, a tert-butyl group, a n-pentyl group, and a different form. A pentyl group, a second pentyl group, a neopentyl group, a third amyl group, a n-hexyl group, an isohexyl group and the like.

A benzotriazole derivative having a -SO ₃ H group in the structure is preferably used in the reactive ultraviolet absorber, but is not limited thereto.

The nylon-based textile of the present invention may be used singly or in combination with a non-reactive ultraviolet absorber and a reactive ultraviolet absorber. It is preferred to use a reactive ultraviolet absorber alone or a non-reactive ultraviolet absorber and a reactive ultraviolet absorber, and it is preferred to use both a non-reactive ultraviolet absorber and a reactive ultraviolet absorber.

The fluorescent whitening agent used in the present invention may be used as it is, or may be synthesized according to a technique known in the art. Preferably, it is at least one of a stilbene type, a coumarin type, a pyrazoline type, a benzoxyl type, and a phthalimide type fluorescent whitening agent, more preferably a stilbene type fluorescent dye. Brightener, but not limited to this. The o.w.f. when the above brightener is used may be adjusted as needed, preferably in the range of 0.1 to 10% o.w.f., more preferably in the range of 0.5 to 2% o.w.f.

The time and temperature during the treatment of the thin nylon fabric using the organic ultraviolet absorber and the fluorescent whitening agent in the presence of the organic acid are not particularly limited, and may be determined as needed, for example, the time may be 5~ Within the 60 minute range, the temperature can be in the range of 90 to 115 °C.

[Examples]

The present invention will be further described below in conjunction with the examples and comparative examples.

The physical properties involved in the examples and comparative examples were tested as follows:

(1) Organic acid: Whether or not there is residue on the fiber after using an organic acid, and observation by FT-IR. When an absorption peak (carbon group derived from a carboxyl group) is present near 1750 cm ^-1 , it means that an organic acid remains on the fiber; otherwise, there is no residue.

(2) UV protection factor UPF value: AS/NZS 4399-1996 standard.

(3) Tactile evaluation: The evaluation of the tactile sensation of 10 subjects was evaluated, and 6 people judged as When it is soft, ○, 3 to 5 people judge that it is soft when △, and when 2 or less people judge that it is soft ×.

(4) Household washing standard: JIS L 0217 103 method.

The respective reagents involved in the following examples and comparative examples are as follows:

(1) Non-reactive UV absorber:

1-A: 45wt% aqueous emulsion 1-B: 35wt% water emulsion 1-C: 40wt% aqueous emulsion 1-D: 25wt% aqueous emulsion 1-E: 25wt% aqueous emulsion 1-F: 42wt% aqueous emulsion

(2) Reactive UV absorber:

2-A: 35wt% aqueous emulsion 2-B: 60wt% aqueous emulsion

(3) Organic acids

Lactic acid: 85wt% chemically pure substance

Formic acid: 98wt% chemically pure substance

Acetic acid: 99.5wt% chemically pure substance

(4) Inorganic acid

Sulfuric acid: 98wt% chemically pure substance

Phosphoric acid: 85wt% chemically pure substance

(5) Fluorescent brightener

Stilbene type fluorescent brightener

Coumarin-type fluorescent whitening agent

Benzooxazole type fluorescent brightener

Pyrazoline type fluorescent brightener

[Example 1]

Using a thin nylon 6 fabric with a weight of 32 g/m ² and a cover factor of 1670 (longitudinal 20D-24f-fully matt nylon; weft 20D-24f-full matt nylon; manufactured by Toray Synthetic Fiber Co., Ltd.), refined by conventional methods (Sodium carbonate 2 g/L, soap tablet 2 g/L; 80 ° C × 30 minutes), drying (130 ° C × 2 minutes), intermediate setting (160 ° C × 1.5 minutes), the cloth was put into the treatment shown in Table 1. The liquid (bath ratio 1:20) was heated to 98 ° C and immersed for 30 minutes. Then, the fixing treatment (polyphenol condensate 2 g/L, 80 ° C × 20 minutes), water washing, and drying were carried out in accordance with a conventional method to obtain a nylon fiber textile of Example 1.

The physical properties of the obtained textiles are shown in Table 2. When the nylon fiber in the obtained textile was observed by FT-IR, it was found that there was an absorption peak (carbon group derived from a carboxyl group) in the vicinity of 1750 cm ^-1 , indicating that the organic acid remained on the nylon fiber after the processing.

[Comparative Example 1-1]

The composition shown in Table 1 does not contain lactic acid, and the rest is the same as in Example 1, and the physical properties of the obtained textile are shown in Table 2.

[Comparative Example 1-2]

The lactic acid in the composition shown in Table 1 was replaced with sulfuric acid, and the rest was the same as in Example 1, and the physical properties of the obtained textile were shown in Table 2.

[Comparative Example 1-3]

The composition shown in Table 1 did not contain a stilbene type fluorescent whitening agent, and the rest was the same as in Example 1, and the physical properties of the obtained textiles are shown in Table 2.

[Comparative Example 1-4]

The compositions shown in Table 1 used only non-reactive type 1-A, and the rest were the same as in Example 1, and the physical properties of the obtained textiles are shown in Table 2.

[Comparative Example 1-5]

The composition shown in Table 1 was only the reaction type 2-A, and the rest was the same as in Example 1, and the physical properties of the obtained textiles are shown in Table 2.

[Comparative Example 1-6]

The compositions shown in Table 1 used only the stilbene type fluorescent whitening agent, and the rest were the same as in Example 1, and the physical properties of the obtained textiles are shown in Table 2.

[Comparative Example 1-7]

The compositions shown in Table 1 used only non-reactive 1-A and stilbene-type fluorescent whitening agents, and the rest were the same as in Example 1, and the physical properties of the obtained textiles are shown in Table 2.

[Comparative Example 1-8]

The compositions shown in Table 1 used only the reactive 2-A and stilbene-type fluorescent whitening agents, and the rest were the same as in Example 1, and the physical properties of the obtained textiles are shown in Table 2.

[Comparative Example 1-9]

The compositions shown in Table 1 used only non-reactive type 1-A and reaction type 2-A, and the rest were the same as in Example 1, and the physical properties of the obtained textiles are shown in Table 2.

It can be seen from the above table that the textile obtained by treating the thin nylon fabric with a non-reactive ultraviolet absorber, a reactive ultraviolet absorber and a fluorescent whitening agent in the presence of lactic acid is compared with the ultraviolet absorption only. Or only using a fluorescent whitening agent, or using only ultraviolet absorbers and lactic acid, or using only ultraviolet absorbers and fluorescent whitening agents, or using both ultraviolet absorbers and fluorescent light in the presence of sulfuric acid. The textile obtained by treating the white agent is not only soft to the touch but also has excellent ultraviolet shielding properties, and in particular, maintains a high UPF value after washing.

[Embodiment 2]

Using a thin nylon 6 fabric with a weight of 60 g/m ² and a cover factor of 2430 (longitudinal 30D-24f-semi-dull nylon; weft 40D-34f-fully matt nylon; manufactured by Toray Synthetic Fiber Co., Ltd.), scouring by conventional methods (Sodium carbonate 2 g/L, soap tablet 2 g/L; 80 ° C × 30 minutes), drying (130 ° C × 2 minutes), intermediate setting (160 ° C × 1.5 minutes), the cloth was put into the treatment shown in Table 3. The liquid (bath ratio 1:20) was heated to 95 ° C and immersed for 30 minutes. Then, fixing treatment (polyphenol condensate 2 g/L, 80 ° C × 20 minutes), water washing, and drying were carried out in accordance with a conventional method to obtain a nylon fiber textile of Example 2.

The physical properties of the obtained textiles are shown in Table 4. When the nylon fiber in the obtained textile was observed by FT-IR, it was found that there was an absorption peak (carbon group derived from a carboxyl group) in the vicinity of 1750 cm ^-1 , indicating that the organic acid remained on the nylon fiber after the processing.

[Comparative Example 2-1]

The composition shown in Table 3 did not contain formic acid, and the rest was the same as in Example 2, and the physical properties of the obtained textiles are shown in Table 4.

[Comparative Example 2-2]

The formic acid in the composition shown in Table 3 was replaced with sulfuric acid, and the rest was the same as in Example 2, and the physical properties of the obtained textile were shown in Table 4.

[Comparative Example 2-3]

The composition shown in Table 3 did not contain the coumarin-type fluorescent whitening agent, and the rest was the same as in Example 2, and the physical properties of the obtained textiles are shown in Table 4.

As can be seen from the above table, the textile obtained by treating the thin nylon fabric with a non-reactive ultraviolet absorber and a fluorescent whitening agent in the presence of formic acid, Compared with the use of only UV absorbers and fluorescent whitening agents, or the use of only UV absorbers and formic acid, or the simultaneous use of UV absorbers and fluorescent brighteners in the presence of sulfuric acid, not only textiles obtained after treatment with UV absorbers and fluorescent brighteners, It is soft to the touch and has excellent UV shielding properties, especially after washing to maintain a high UPF value.

[Example 3]

Using a thin nylon 6 fabric with a weight of 60 g/m ² and a cover factor of 2430 (longitudinal 30D-24f-semi-dull nylon; weft 40D-34f-fully matt nylon; manufactured by Toray Synthetic Fiber Co., Ltd.), scouring by conventional methods (Sodium carbonate 2 g/L, soap sheet 2 g/L; 80 ° C × 30 minutes), drying (130 ° C × 2 minutes), intermediate setting (160 ° C × 1.5 minutes), the cloth was put into the treatment shown in Table 5 The liquid (bath ratio 1:20) was heated to 95 ° C and immersed for 30 minutes. Then, the fixing treatment (polyphenol condensate 2 g/L, 80 ° C × 20 minutes), water washing, and drying were carried out in accordance with a conventional method to obtain a nylon fiber textile of Example 3.

The physical properties of the obtained textiles are shown in Table 6. When the nylon fiber in the obtained textile was observed by FT-IR, it was found that there was an absorption peak (carbon group derived from a carboxyl group) in the vicinity of 1750 cm ^-1 , indicating that the organic acid remained on the nylon fiber after the processing.

[Comparative Example 3-1]

The composition shown in Table 5 did not contain formic acid, and the rest was the same as in Example 3, and the physical properties of the obtained textiles are shown in Table 6.

[Comparative Example 3-2]

The formic acid in the composition shown in Table 5 was replaced with sulfuric acid, and the rest was the same as in Example 3, and the physical properties of the obtained textile were shown in Table 6.

[Comparative Example 3-3]

The composition shown in Table 5 did not contain the coumarin-type fluorescent whitening agent, and the rest was the same as in Example 3, and the physical properties of the obtained textiles are shown in Table 6.

It can be seen from the above table that in the presence of formic acid, the textile obtained by treating the thin nylon fabric with a reactive ultraviolet absorber and a fluorescent whitening agent is compared with the ultraviolet absorbent and the fluorescent whitening agent alone. Or the use of only the ultraviolet absorber and formic acid, or the use of the ultraviolet absorber and the fluorescent whitening agent in the presence of sulfuric acid, the resulting textile is not only soft to the touch but also has excellent ultraviolet shielding properties, especially after washing. Still maintain a high UPF value.

[Example 4]

Using a thin nylon 6 fabric with a basis weight of 40 g/m ² and a cover factor of 1970 (longitudinal 30D-24f-semi-matting nylon; weft 20D-34f-fully matt nylon; manufactured by Toray Synthetic Fiber Co., Ltd.), scouring by conventional methods (Sodium carbonate 2g/L, soap flakes 2g/L; 80°C×30 minutes), drying (130°C×2 minutes), intermediate setting (160°C×1.5 minutes), the fabric was put into the treatment shown in Table 7. The liquid (bath ratio 1:20) was heated to 110 ° C and immersed for 20 minutes. Then, fixing treatment (polyphenol condensate 2 g/L, 80 ° C × 20 minutes), water washing, and drying were carried out in accordance with a conventional method to obtain a nylon fiber textile of Example 4.

The physical properties of the obtained textiles are shown in Table 8. When the nylon fiber in the obtained textile was observed by FT-IR, it was found that there was an absorption peak (carbon group derived from a carboxyl group) in the vicinity of 1750 cm ^-1 , indicating that the organic acid remained on the nylon fiber after the processing.

[Comparative Example 4-1]

The composition shown in Table 7 did not contain acetic acid, and the rest was the same as in Example 4, and the physical properties of the obtained textiles are shown in Table 8.

[Comparative Example 4-2]

The acetic acid in the composition shown in Table 7 was replaced with phosphoric acid, and the rest was the same as in Example 4, and the physical properties of the obtained textile were shown in Table 8.

[Comparative Example 4-3]

The composition shown in Table 7 did not contain a coumarin-type fluorescent whitening agent and a stilbene-type fluorescent whitening agent, and the rest was the same as in Example 4, and the physical properties of the obtained textiles are shown in Table 8.

As can be seen from the above table, in the presence of acetic acid, non-reactive UV absorbers, reactive UV absorbers and fluorescent whitening agents are used to penetrate the thin nylon fabric. The textile obtained after the treatment is compared with the use of only the ultraviolet absorber and the fluorescent whitening agent, or only the ultraviolet absorber and formic acid, or the use of the ultraviolet absorber and the fluorescent whitening agent in the presence of acetic acid. The textile obtained after the treatment is not only soft to the touch but also has excellent ultraviolet shielding properties, and in particular, maintains a high UPF value after washing.

[Example 5]

Using a thin nylon 6 fabric with a basis weight of 40 g/m ² and a cover factor of 1970 (longitudinal 30D-24f-semi-matting nylon; weft 20D-34f-fully matt nylon; manufactured by Toray Synthetic Fiber Co., Ltd.), scouring by conventional methods (Sodium carbonate 2 g/L, soap tablet 2 g/L; 80 ° C × 30 minutes), drying (130 ° C × 2 minutes), intermediate setting (160 ° C × 1.5 minutes), the cloth was put into the treatment shown in Table 9. The liquid (bath ratio 1:20) was heated to 100 ° C and immersed for 30 minutes. Then, fixing treatment (polyphenol condensate 2 g/L, 80 ° C × 20 minutes), water washing, and drying were carried out in accordance with a conventional method to obtain a nylon fiber textile of Example 5.

The physical properties of the obtained textiles are shown in Table 10. When the nylon fiber in the obtained textile was observed by FT-IR, it was found that there was an absorption peak (carbon group derived from a carboxyl group) in the vicinity of 1750 cm ^-1 , indicating that the organic acid remained on the nylon fiber after the processing.

[Comparative Example 5-1]

Using a thin nylon cloth with a weight of 24 g/m ² and a cover factor of 1470 (transformed 15D-24f-semi-dull nylon; weft 15D-24f-fully matt nylon; manufactured by Toray Synthetic Fiber Co., Ltd.), the rest of the same example 5. The physical properties of the obtained textiles are shown in Table 10.

[Comparative Example 5-2]

Using a thin nylon cloth with a weight of 88 g/m ² and a cover factor of 3480 (transverse 70D-48f-semi-dull nylon; weft 70D-48f-fully matt nylon; manufactured by Toray Synthetic Fiber Co., Ltd.), the rest of the same example 5. The physical properties of the obtained textiles are shown in Table 10.

It can be seen from the above table that if the grammage is too low, the obtained textile has poor ultraviolet shielding properties; if the grammage is too high, the obtained textile can obtain superior ultraviolet shielding properties, but has a poor hand feeling.

[Embodiment 6]

Using a thin nylon 6 fabric with a weight of 32 g/m ² and a cover factor of 1670 (longitudinal 20D-24f-full matt nylon; weft 20D-24f-full matt nylon; manufactured by Toray Synthetic Fiber Co., Ltd.), refined in a conventional manner After scouring (sodium carbonate 2 g/L, soap tablets 2 g/L; 80 ° C × 30 minutes), drying (130 ° C × 2 minutes), intermediate setting (160 ° C × 1.5 minutes), the cloth was put into the composition shown in Table 11. In the treatment liquid (bath ratio 1:20), the temperature was raised to 98 ° C and the immersion treatment was carried out for 30 minutes. Then, fixing treatment (polyphenol condensate 2 g/L, 80 ° C × 20 minutes), water washing, and drying were carried out in accordance with a conventional method to obtain a nylon fiber textile of Example 6.

The physical properties of the obtained textiles are shown in Table 12. When the nylon fiber in the obtained textile was observed by FT-IR, it was found that there was an absorption peak (carbon group derived from a carboxyl group) in the vicinity of 1750 cm ^-1 , indicating that the organic acid remained on the nylon fiber after the processing.

[Embodiment 7]

Using a thin nylon 6 fabric with a weight of 32 g/m ² and a cover factor of 1670 (longitudinal 20D-24f-fully matt nylon; weft 20D-24f-full matt nylon; manufactured by Toray Synthetic Fiber Co., Ltd.), refined by conventional methods (Sodium carbonate 2 g/L, soap sheet 2 g/L; 80 ° C × 30 minutes), drying (130 ° C × 2 minutes), intermediate setting (160 ° C × 1.5 minutes), the cloth was put into the treatment shown in Table 13 The liquid (bath ratio 1:20) was heated to 98 ° C and immersed for 30 minutes. Then, the fixing treatment (polyphenol condensate 2 g/L, 80 ° C × 20 minutes), water washing, and drying were carried out in accordance with a conventional method to obtain a nylon fiber textile of Example 7.

The physical properties of the obtained textiles are shown in Table 14. When the nylon fiber in the obtained textile was observed by FT-IR, it was found that there was an absorption peak (carbon group derived from a carboxyl group) in the vicinity of 1750 cm ^-1 , indicating that the organic acid remained on the nylon fiber after the processing.

[Embodiment 8]

Using a thin nylon 6 fabric with a weight of 60 g/m ² and a cover factor of 2430 (longitudinal 30D-24f-semi-dull nylon; weft 40D-34f-fully matt nylon; manufactured by Toray Synthetic Fiber Co., Ltd.), scouring by conventional methods (Sodium carbonate 2 g/L, soap sheet 2 g/L; 80 ° C × 30 minutes), drying (130 ° C × 2 minutes), intermediate setting (160 ° C × 1.5 minutes), the cloth was put into the treatment shown in Table 15 The liquid (bath ratio 1:20) was heated to 95 ° C and immersed for 30 minutes. Then, the fixing treatment (polyphenol condensate 2 g/L, 80 ° C × 20 minutes), water washing, and drying were carried out in accordance with a conventional method to obtain a nylon fiber textile of Example 8.

The physical properties of the obtained textiles are shown in Table 16. When the nylon fiber in the obtained textile was observed by FT-IR, it was found that there was an absorption peak (carbon group derived from a carboxyl group) in the vicinity of 1750 cm ^-1 , indicating that the organic acid remained on the nylon fiber after the processing.

[Embodiment 9]

Using a thin nylon 6 fabric with a weight of 28 g/m ² and a cover factor of 1670 (longitudinal 10D-24f-semi-dull nylon; weft 15D-24f-fully matt nylon; manufactured by Toray Synthetic Fiber Co., Ltd.), scouring by conventional methods (Sodium carbonate 2 g/L, soap tablet 2 g/L; 80 ° C × 30 minutes), drying (130 ° C × 2 minutes), intermediate setting (160 ° C × 1.5 minutes), the cloth was put into the treatment shown in Table 17 The liquid (bath ratio 1:20) was heated to 100 ° C and immersed for 60 minutes. Then, the fixing treatment (polyphenol condensate 2 g/L, 80 ° C × 20 minutes), water washing, and drying were carried out in accordance with a conventional method to obtain a nylon fiber textile of Example 9.

The physical properties of the obtained textiles are shown in Table 18. When the nylon fiber in the obtained textile was observed by FT-IR, it was found that there was an absorption peak (carbon group derived from a carboxyl group) in the vicinity of 1750 cm ^-1 , indicating that the organic acid remained on the nylon fiber after the processing.

[Embodiment 10]

Using a thin nylon 66 fabric with a weight of 54 g/m ² and a cover factor of 2570 (longitudinal 30D-24f-semi-dull nylon; weft 30D-24f-full matt nylon; manufactured by Toray Synthetic Fiber Co., Ltd.), scouring by conventional methods (Sodium carbonate 2 g/L, soap sheet 2 g/L; 80 ° C × 30 minutes), drying (130 ° C × 2 minutes), intermediate setting (160 ° C × 1.5 minutes), the cloth was put into the treatment shown in Table 19. The liquid (bath ratio 1:20) was heated to 90 ° C and immersed for 60 minutes. Then, fixing treatment (polyphenol condensate 2 g/L, 80 ° C × 20 minutes), water washing, and drying were carried out in accordance with a conventional method to obtain a nylon fiber textile of Example 10.

The physical properties of the obtained textiles are shown in Table 20. When the nylon fiber in the obtained textile was observed by FT-IR, it was found that there was an absorption peak (carbon group derived from a carboxyl group) in the vicinity of 1750 cm ^-1 , indicating that the organic acid remained on the nylon fiber after the processing.

All patent documents and non-patent documents mentioned in the specification are herein incorporated by reference. The term "various" as used in the specification includes all cases in which more than one is used, that is, "one or more" includes one, two, three, and the like. In the present specification, when the upper limit and the lower limit are respectively described for a certain numerical range, or when a certain numerical range is described in combination of the upper limit and the lower limit, each of the upper limit and the lower limit described in the above may be arbitrarily combined into a new numerical range, which is directly and clearly described. The combined description of the numerical ranges should be considered identical. Variations and modifications of the invention may be made by those skilled in the art without departing from the scope of the invention, which is also included in the scope of the invention.

Claims (11)

The invention relates to a method for producing a UV-resistant nylon-based textile, which is characterized in that an organic ultraviolet absorber and a fluorescent whitening agent are used to treat a thin nylon fabric having a weight of 25 to 60 g/m ² in the presence of an organic acid. The organic ultraviolet absorber and the fluorescent whitening agent enter the inside of the fiber to obtain an ultraviolet-resistant nylon-based textile, wherein the organic ultraviolet absorbent is a non-reactive organic ultraviolet absorbent, or a non-reactive organic ultraviolet absorbent and a reactive organic UV absorber. The method for producing an ultraviolet-resistant nylon-based textile according to the first aspect of the invention, wherein the thin nylon cloth has a cover factor of 1,500 to 3,000. The method for producing an ultraviolet-resistant nylon-based textile according to the first aspect of the invention, wherein the non-reactive organic ultraviolet absorbent has a structure represented by the following formula (I): Wherein R ₁ is -H, C _1-6 alkyl, -OH, -OCH ₃ , -SCH ₃ or R ₂ is R ₃ is The method for producing an ultraviolet-ray resistant nylon-based textile according to the first aspect of the invention, wherein the reactive organic ultraviolet absorbent has a structure represented by the following formula (II): Wherein R ₄ is an alkyl group; R ₅ is -SO ₃ H or -SO ₃ X, and the X is selected from an alkali metal. The method for producing an ultraviolet-resistant nylon-based textile according to any one of claims 1 to 4, wherein the fluorescent whitening agent is a stilbene type, a coumarin type, a pyrazoline type, and a benzo One or more of an oxygen nitrogen type and a xylylene imine type fluorescent whitening agent. The method for producing an ultraviolet-resistant nylon-based textile according to claim 5, wherein the fluorescent whitening agent is a stilbene-type fluorescent whitening agent. The method for producing a UV-resistant nylon-based textile according to any one of claims 1 to 4, wherein the organic acid is formic acid, acetic acid, propionic acid, lactic acid, glycolic acid, propionic acid, citric acid, One or more of oxalic acid, tartaric acid, maleic acid, and malic acid. A UV-resistant nylon-based textile product, which is subject to claims 1 to 7 The manufacturing method of any one of them is obtained. The UV-resistant nylon-based textile material of claim 8, wherein the UPF value of the UV-resistant nylon-based textile is 30 or more according to the AS/NZS 4399-1996 method. The UV-resistant nylon-based textile of claim 9, wherein the UPF value of the UV-resistant nylon-based textile is 40 or more according to the AS/NZS 4399-1996 method. The UV-resistant nylon-based textile of claim 10, wherein the UPF value of the UV-resistant nylon-based textile is 50 or more according to the AS/NZS 4399-1996 method.