JP2023130593A - Polyester fibers and woven and knitted fabrics including the same - Google Patents

Abstract

To provide antiviral polyester fibers having excellent washing durability and polyester woven and knitted fabrics including the same.SOLUTION: Woven and knitted fabrics include polyester fibers. The polyester fibers are coated with quaternary ammonium halide and a polyester absorbent.SELECTED DRAWING: None

Description

The present invention relates to a polyester fiber having antiviral properties with excellent washing durability and a polyester woven or knitted fabric using the same.

In recent years, interest in environmental hygiene has increased, and materials for clothing are increasingly required to have antiviral protection and other functions.

A fiber fabric that has antibacterial, antiviral, and antiallergen functions has been proposed (Patent Document 1), but since it uses a binder, it has a hard texture and has poor water absorption.
While various antiviral agents such as metal ions and cationic surfactants have been proposed, a product containing quaternary ammonium halide has been proposed as an antiviral product with excellent washing durability. (Patent Document 2). However, a product with better washing durability is desired.

Japanese Patent Application Publication No. 2011-246859 International Publication No. 2016/009928

An object of the present invention is to provide a polyester fiber having antiviral properties with excellent washing durability and a polyester woven or knitted fabric using the same.

The present inventors have made extensive studies to achieve the above-mentioned problems. As a result, they found that by using a polyester water-absorbing agent in woven or knitted fabrics made of polyester fibers, the washing durability of the antiviral performance when using quaternary ammonium halides was dramatically improved. .
That is, the present invention has the following configuration.
This is a woven or knitted fabric containing polyester fibers, to which a quaternary ammonium halide and a polyester water absorbing agent are attached.
In a preferred embodiment, the woven or knitted fabric has an antiviral activity value of 3 or more according to JIS L 1922:2016 after washing 50 times using the standard washing method (40 ° C.) according to the washing method for SEK mark textile products. be.
Furthermore, as a woven or knitted fabric, the water absorption rate is within 3 seconds when evaluated by the drop method according to JIS L 1907 (2010 law) after 50 washes using the standard washing method (40°C) according to the washing method for SEK mark textile products. This is a preferred embodiment.
It is preferable that the woven or knitted fabric contains polyester fibers in an amount of 50% by mass or more, more preferably 80% by mass or more.
The present invention also relates to polyester fibers to which a quaternary ammonium halide and a polyester water absorbing agent are attached.

According to the present invention, the polyester water absorbing agent is absorbed into the polyester fibers, and the antiviral agent is also absorbed into the polyester water absorbing agent, so that the antiviral agent is significantly prevented from falling off after washing. Antiviral woven and knitted fabrics and polyester fibers with dramatically improved durability can be provided.

The present invention will be explained in detail below.
The woven or knitted fabric of the present invention has excellent adhesion of quaternary ammonium halides by containing polyester fibers. From the viewpoint of excellent adhesion, it is preferable that the woven or knitted fabric contains polyester fibers in an amount of 50% by mass or more, more preferably 80% by mass or more. Examples of polyester fibers include, but are not limited to, aromatic polyester fibers such as polyethylene terephthalate, polytrimethylene terephthalate, and polybutylene terephthalate, and aliphatic polyester fibers such as polylactic acid and polyglycolic acid. Among these, fibers made of polyethylene terephthalate, polytrimethylene terephthalate, and polybutylene terephthalate are preferred because they have excellent mechanical properties and durability, and also have good color fastness in terms of material properties.
Further, as fibers other than polyester fibers, synthetic fibers such as polyamide, polyacrylic, polyurethane, and blended yarns of synthetic fibers and natural fibers such as cotton, rayon, wool, and silk are used. As for the form of the woven or knitted material, polyester fibers may be used alone, or the above-mentioned fibers may be interwoven or knitted.
It is important that the woven or knitted fabric in the present invention has a quaternary ammonium halide attached thereto. Quaternary ammonium halides have the ability to strongly adsorb and denature the amino acids of proteins that make up viruses, and thus can exhibit high antiviral effects.
Examples of quaternary ammonium halides include tetramethylammonium iodide, trimethyldecylammonium bromide, didecyldimethylammonium bromide, dimethyldidodecylammonium bromide, dodecyldimethyl-2-phenoxyethylammonium bromide, lauryltrimethylammonium bromide, and cetyltrimethylammonium bromide. Bromide, didecyldimethylammonium chloride, trimethylammonium chloride, trimethyldodecylammonium chloride, trimethyltetradecylammonium chloride, cetylpyridinium chloride, trimethylhexadecyl ammonium chloride, trimethyloctadecyl ammonium chloride, didecyl monomethyl hydroxyethylammonium bromide, alkyl dimethyl hydroxyethyl Ammonium chloride, alkyltrimethylammonium bromide, dioctyldimethylammonium chloride, dioctyldimethylammonium bromide, octyldecyldimethylammonium chloride, octyldecyldimethylammonium bromide, methylbenzethonium chloride, alkyldimethylbenzylammonium chloride, alkylpyridinium ammonium chloride, dialkylmethylbenzylammonium chloride etc. Among these, didecyldimethylammonium chloride is particularly preferably used since it has a high affinity with polyester water absorbing agents.
The amount of the quaternary ammonium halide deposited is preferably 0.01 to 10 parts by weight per 100 parts by weight of the woven or knitted fabric. If it is less than 0.01 part by weight, it may be difficult to obtain sufficient antiviral properties, and if it is more than 10 parts by weight, there is a concern that the fastness will decrease. In the present invention, in addition to the quaternary ammonium halide, a polyester water absorbing agent is attached to the woven or knitted fabric. Thereby, the durability of the antiviral performance of the quaternary ammonium halide can be dramatically improved. Note that the concentration of the quaternary ammonium halide used is preferably 0.1 to 100 g/L.
Since anionic additives may inhibit the antiviral properties of quaternary ammonium halides, nonionic polyester water absorbing agents are preferably used as the polyester water absorbing agents. As the nonionic water absorbing agent, those that are generally marketed as water absorbing agents for polyester fibers are preferably used, and among them, polyoxyethylene polyester resin is preferred because of its high affinity with quaternary ammonium halides. used. Commercially available products include SR6200, Acrinar N A99, SR-N7015 (manufactured by Takamatsu Yushi Co., Ltd.), "Nice Pole" PR-86E (manufactured by Nicca Chemical Co., Ltd.), and Meikafinish SRM-65 (manufactured by Meisei Chemical Co., Ltd.). ) and Kuramikal RX-10 (manufactured by Keihin Kasei Co., Ltd.), which can provide high antiviral activity values.
Although various additives other than polyester-based water absorbing agents, water repellents, hard finishing agents, antifouling agents, etc. can be blended, it is preferable to select nonionic additives as in the case of polyester-based water absorbing agents.
Methods for attaching the quaternary ammonium halide to the woven or knitted fabric of the present invention include bath treatment, dry heat treatment, moist heat treatment, and the like.
As the in-bath treatment, a method is preferably used in which the woven or knitted fabric is placed in a treatment solution containing a quaternary ammonium halide and the treatment solution is circulated. As a device for in-bath treatment, devices such as a jet dyeing machine, a pneumatic dyeing machine, a Zicker dyeing machine, a wince dyeing machine, a beam dyeing machine, etc. can be used. The treatment temperature in the bath is preferably 80 to 140°C, more preferably 110 to 140°C. Further, the treatment time is preferably 10 to 120 minutes, more preferably 20 to 60 minutes.

Examples of the dry heat treatment include a method in which a treatment liquid containing a quaternary ammonium halide is applied to a woven or knitted fabric using a device such as a mangle, followed by drying and heat treatment. As a device for applying the treatment liquid, a device that can uniformly apply the liquid to the woven or knitted fabric is preferable, and an ordinary mangle is suitably used as the liquid applying device. It can also be applied using a foam processing machine, a printing method, an inkjet method, a spray method, a coating method, or the like.

As the drying and heat treatment equipment, a tenter, short loop, shrink surfer, cylinder dryer, etc. that can uniformly apply heat to the woven or knitted fabric can be used.

The drying temperature is preferably 80 to 150°C. The treatment time is preferably 15 seconds to 5 minutes, more preferably 30 seconds to 3 minutes at 100 to 140°C. The heat treatment temperature after drying is preferably 80 to 200°C. The treatment time is preferably 15 seconds to 8 minutes, more preferably 30 seconds to 5 minutes at 130 to 190°C. If the treatment temperature is low, the reaction may not be sufficient and satisfactory washing durability may not be obtained. Furthermore, if the treatment temperature is too high, the quaternary ammonium halide may be decomposed. Additionally, if a treatment solution is applied through dry heat treatment, the quaternary ammonium halide may draw out the dye and reduce its abrasion fastness, so wash it with hot water at 30 to 80°C for 30 seconds to 5 minutes. It is preferable.

Examples of the moist heat treatment include a method in which a treatment liquid containing a quaternary ammonium halide is applied to the woven or knitted fabric using a device such as a mangle, and then subjected to the moist heat treatment. The wet heat treatment device may be any device that can uniformly apply heat to the woven or knitted fabric, and a normal pressure steamer, a high pressure steamer, or the like can be used. In a preferred embodiment, the moist heat treatment temperature is 80 to 140°C. The treatment time is preferably 15 seconds to 10 minutes. If the treatment temperature and treatment time for applying the quaternary ammonium halide are insufficient, the fixation of the quaternary ammonium halide to the woven or knitted fabric may be insufficient, leading to poor antiviral properties. Furthermore, if the treatment temperature and treatment time are too long, there is a risk that the texture of the woven or knitted material may be hardened, the fastness may be reduced, or the like.

The method of attaching the polyester water absorbing agent will be explained. As a method for attaching the polyester water absorbing agent, an exhaustion method using in-bath treatment is preferably used. Specifically, a method is preferably used in which the woven or knitted fabric is placed in a treatment solution containing a polyester water-absorbing agent and the treatment solution is circulated. As a device for in-bath treatment, devices such as a jet dyeing machine, a pneumatic dyeing machine, a Zicker dyeing machine, a wince dyeing machine, a beam dyeing machine, etc. can be used. The treatment temperature in the bath is preferably 80 to 140°C, more preferably 110 to 140°C. Further, the treatment time is preferably 10 to 120 minutes, more preferably 20 to 60 minutes.

Next, the dyeing process of the woven or knitted material will be explained. The dyeing process can be carried out in accordance with the dyeing process and conditions for general polyester blend knitted fabrics, and can be carried out using batch dyeing machines such as liquid jet dyeing machines, airflow dyeing machines, zicker dyeing machines, wince dyeing machines, beam dyeing machines, etc. In addition to the above method, it is possible to carry out the dyeing using known methods such as continuous dyeing using a pad method, printing using a flat screen, rotary screen, inkjet printing, and the like.

The quaternary ammonium halide and polyester water-absorbing agent of the present invention adhere to fibers, but before applying the quaternary ammonium halide, a polyester-based water absorbing agent that has a high affinity with polyester fibers must be treated in a bath. is preferred. The polyester water absorbing agent is absorbed into the polyester fibers, and then by adding quaternary ammonium halide, the quaternary ammonium halide is absorbed into the polyester fibers, and the polyester water absorbing agent is also absorbed. Exhausted.
Because it has a polyester water-absorbing agent attached, it has excellent water-absorbing performance, especially when evaluated by the drop method of JIS L 1907 (2010 law) after 50 washes. It is preferable to have. Since polyester fibers are hydrophobic, if no water-absorbing agent is added, their water-absorbing properties are poor both initially and after 50 washes, and the washing durability of antiviral properties is also insufficient. By adding quaternary ammonium halide, it has become possible to exhibit high water absorption performance and antiviral performance. Here, the measurement method for washing 50 times is based on the standard washing method (40° C.) according to the washing method for SEK mark textile products.
As for antiviral performance, it is preferable that the antiviral activity value according to JIS L 1922:2016 after 50 washes is 3 or more. The antiviral activity value after 50 washes is a value measured by a standard washing method (40° C.) according to the washing method for SEK mark textile products. The polyester water-absorbing agent is absorbed into the polyester fibers, and then the quaternary ammonium halide is also absorbed into the polyester-based water-absorbing agent, which greatly suppresses shedding after washing and improves washing durability. Excellent. In the case of no polyester-based water absorbing agent, the quaternary ammonium halide is partially exhausted inside the polyester fiber and partially adheres to the fiber surface, but the attached quaternary ammonium halide falls off after washing, making it an excellent product. It is not possible to impart antiviral performance.
The woven or knitted fabric of the present invention can be used as clothing such as sportswear, home wear, coats, blouses, blouses, shirts, skirts, slacks, indoor exercise clothes, pajamas, nightwear, underwear, office wear, work clothes, white food coats, white nursing coats. It is preferably used as patient clothing, nursing clothing, student clothing, kitchen clothing, etc. It is also used for miscellaneous goods such as aprons, towels, gloves, mufflers, socks, hats, shoes, sandals, and bags. It is also preferably used as interior goods such as curtains, kotatsu covers, sofa covers, cushion covers, sofa upholstery, and tablecloths. Furthermore, it is preferably used for bedding supplies such as futon side fabrics, sheets, duvet covers, and pillowcases.

Next, the antiviral woven or knitted fabric of the present invention will be described in more detail with reference to Examples, but the present invention is not limited to these Examples.
(1) Antiviral activity value The test was conducted according to JIS L 1922:2016. The measurement method was Plaque assay. Influenza A virus: A/Hong Kong/8/68 (H3N2) ATCC VR-1679 was used as the test virus. Fabrics that had not been washed (initial stage) and fabrics that had been washed 50 times were judged to see if the antiviral processing standard set by the Fiber Evaluation Technology Council (General Incorporated Association) was 3 or higher. The washing method was similar to the washing method for SEK mark textile products, and the standard washing method (40° C.) and the high temperature accelerated washing method (80° C.) were each carried out a predetermined number of times, and the antiviral activity was measured for each.
(2) Water absorption (dropping method)
Evaluation was made according to JIS L 1907 (2010).
The washing method followed the washing method for SEK mark textile products, and the standard washing method (40° C.) and the high temperature accelerated washing method (80° C.) were each carried out a predetermined number of times, and the water absorption was measured for each.
(3) Washing fastness Evaluated according to JIS L 0844 (No. A-2) (2011).
(4) Fastness to friction Evaluated according to JIS L 0849 (Gakushin type method) (2013).
(5) Light fastness evaluated according to JIS L 0842 (2004).
[Example 1]
Polyethylene terephthalate (PET) false twisted yarn (167 dtex, 48 filaments) was used for the warp and weft that form the ground structure of the fabric, with a warp density of 86 threads/2.54 cm and a weft thread density of 59 threads/2.54 cm. Woven twill fabric.

The dyeing process was carried out by scouring at 95°C, drying at 130°C, and intermediate setting at 180°C. Next, 1% owf of a nonionic polyester water absorbing agent ("SR-N7015" manufactured by Takamatsu Yushi Co., Ltd.) was added at the same time as a commercially available dark blue dye, dyeing was performed at 130°C for 45 minutes, and reduction washing was performed at 80°C. , washed with hot water, dried, and heat set at 150°C.

Thereafter, it was immersed in an aqueous solution of 4 g/L of didecyldimethylammonium chloride, squeezed with a pickup of 80%, and then dried in a pin tenter set at 130°C. Next, heat setting was performed at 185° C. for 1 minute. Further, this polyester fabric was washed with water at 60°C for 1 minute, and heat set for 1 minute in a pin tenter set at 170°C to obtain a fabric with a density of 107 x 67 pieces/2.54 cm.
The obtained fabric was excellent in fastness, water absorption, and antiviral activity, and also had good washing durability. The results are shown in Table 1.
[Example 2]
The warp of the fabric was PET false twisted yarn (84 dtex, 36 filaments), and the weft was PET/cotton spun yarn (16 count, 65% by mass of polyester/35% by mass of cotton), and the warp density was 151/2. A matte fabric having a length of 54 cm and a weft density of 42 threads/2.54 cm was woven.

The dyeing process was the same as in Example 1, with an intermediate setting. Next, 1% owf of a nonionic polyester water absorbing agent ("SR-N7015" manufactured by Takamatsu Yushi Co., Ltd.) was added at the same time as a commercially available dark blue dye, and the PET false twisted yarn was dyed at 130°C for 45 minutes. It was subjected to reduction cleaning at ℃ and washed with hot water. Next, the cotton was dyed with a commercially available dark blue dye at 100°C for 30 minutes, washed with water, dried, and heat set at 150°C.
Thereafter, it was immersed in an aqueous solution of 5 g/L of didecyldimethylammonium chloride, squeezed with a 60% pickup, and then dried in a pin tenter set at 130°C. Next, heat setting was performed at 185° C. for 1 minute. Furthermore, this polyester fabric was washed with water at 60° C. for 1 minute, and heat set for 1 minute in a pin tenter set at 170° C. to obtain a fabric with a density of 160×48 pieces/2.54 cm.
The obtained fabric was excellent in fastness, water absorption, and antiviral activity, and also had good washing durability. The results are shown in Table 1.
[Example 3]
A knitted fabric with a smooth structure was obtained using a 28-gauge double circular knitting machine using PET false twisted yarns of 84 decitech 72 filaments and 84 decitec 48 filaments.
In the dyeing process, after relaxing and scouring using a conventional method, 1% owf of a nonionic polyester water absorbing agent ("SR-N7015" manufactured by Takamatsu Yushi Co., Ltd.) was added at the same time as a commercially available fluorescent dye. The twisted yarn is dyed, washed with hot water, and dried. Heat setting was performed at 150°C.
Thereafter, it was immersed in an aqueous solution of 3 g/L of didecyldimethylammonium chloride, squeezed with a pickup of 90%, and then dried in a pin tenter set at 130°C. Next, heat setting was performed at 185° C. for 1 minute. Furthermore, this polyester knitted fabric was washed with water at 60° C. for 1 minute, and heat set for 1 minute in a pin tenter set at 170° C. to obtain a knitted fabric.
The obtained knitted fabric was excellent in fastness, water absorption, and antiviral activity, and also had good washing durability. The results are shown in Table 1.
[Example 4]
Using a 28-gauge double circular knitting machine, PET false twisted yarns of 84 decitec 72 filaments and 84 decitec 48 filaments were knitted into a smooth structure.
The dyeing process followed the usual dyeing process for polyester circular knitted fabrics, and proceeded to the relaxed scouring stage. Next, 1% owf of a nonionic polyester water absorbing agent ("SR-N7015" manufactured by Takamatsu Yushi Co., Ltd.) was added at the same time as a commercially available fluorescent dye, and the polyester was dyed at 120°C for 30 minutes, and washed with hot water. ,
Thereafter, it was immersed in an aqueous solution of 3 g/L of dimethyldidodecylammonium bromide, squeezed with a 90% pickup, and then dried in a pin tenter set at 130°C. Next, heat setting was performed at 185° C. for 1 minute. Furthermore, this polyester knitted fabric was washed with water at 60° C. for 1 minute, and heat set for 1 minute in a pin tenter set at 170° C. to obtain a knitted fabric.
The obtained knitted fabric was excellent in fastness, water absorption, and antiviral activity, and also had good washing durability. The results are shown in Table 1.
[Comparative example 1]
In Example 1, the same treatment as in Example 1 was performed except that the nonionic polyester water absorbing agent was not added. The obtained fabric had insufficient water absorption and antiviral activity values. The results are shown in Table 1.
[Comparative example 2]
In Example 2, the same treatment as in Example 2 was performed except that the nonionic polyester water absorbing agent was not added. The obtained fabric had insufficient water absorption and antiviral activity values. The results are shown in Table 1.
[Comparative example 3]
In Example 3, the same treatment as in Example 3 was performed except that the nonionic polyester water absorbing agent was not added. The obtained knitted fabric had insufficient water absorbency and antiviral activity values. The results are shown in Table 1.
[Comparative example 4]
In Comparative Example 3, the same treatment as in Comparative Example 3 was performed except that the concentration of didecyldimethylammonium chloride was changed to an aqueous solution of 1 g/L. The obtained knitted fabric had insufficient water absorbency and antiviral activity values. The results are shown in Table 1.

Claims (6)

A woven or knitted fabric containing polyester fibers, wherein a quaternary ammonium halide and a polyester water absorbing agent are attached to the polyester fibers. The woven or knitted fabric according to claim 1, which has an antiviral activity value of 3 or more according to JIS L 1922:2016 after 50 washes using a standard washing method (40°C). The woven or knitted fabric according to claim 1 or 2, wherein the woven or knitted fabric has a water absorption within 3 seconds when evaluated by the dropping method according to JIS L 1907 (2010 method) after washing 50 times according to the standard washing method (40° C.). The woven or knitted fabric according to any one of claims 1 to 3, wherein the polyester fiber is contained in the woven or knitted fabric in an amount of 50% by mass or more. The woven or knitted fabric according to any one of claims 1 to 4, wherein the polyester fiber is contained in the woven or knitted fabric in an amount of 80% by mass or more. A polyester fiber to which a quaternary ammonium halide and a polyester water absorbing agent are attached.