JP2003020568A - Endothermic treating agent for fiber material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an endothermic treating agent for fiber materials having excellent washing resistance and useful for imparting endothermic property to a fiber material for the manufacture of garments. SOLUTION: The endothermic treating agent for fiber materials contains a resin produced by the crosslinking polymerization of xylitol through crosslinking groups. The endothermic resin is a polymer of an ester of xylitol and (meth)acrylic acid or a copolymer of an ester of xylitol and (meth)acrylic acid and an ester selected from an ester of a monool and (meth)acrylic acid and an ester of a diol and (meth)acrylic acid.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat absorbing agent for a fiber material, which is used for giving a heat absorbing property to a fiber material for a garment in order to obtain a garment having a refreshing feeling when it is dressed. It is a thing.

[0002]

2. Description of the Related Art Clothing includes, for example, those made of cellulose fibers such as cotton and those made of synthetic fibers such as acrylic fibers.

While cotton clothes are excellent in absorbing water, they dry slowly and are difficult to dry if they become sweaty when they are dressed or if they are wet by the humidity of the outside air. May feel uncomfortable due to the heat of hydration. To be able to wear cotton clothes comfortably, for example,
There is known a processing method in which a hydrophobic resin is previously applied to a cloth which is a fiber material of the garment to reduce the water content.

Further, since clothes made of synthetic fiber have poor absorbency of water, they may feel uncomfortable because they do not absorb sweat or the like and become damp. Therefore, a processing method is known in which a glycerin derivative, a sugar ester derivative, a polyethylene glycol derivative or a polysaccharide which imparts water absorbability to a synthetic fiber cloth is applied together with a binder.

However, with these processing methods, sufficient comfort and washing resistance of clothes cannot be obtained, which is not economically satisfactory.

[0006]

DISCLOSURE OF THE INVENTION The present invention provides an endothermic processing agent for a textile material having excellent washing resistance, which is used when a textile material sewn into clothes is subjected to a processing treatment for imparting a cooling property. The purpose is to provide.

[0007]

The endothermic processing agent for fiber materials of the present invention made to achieve the above object comprises a resin in which xylitol is cross-linked and polymerized through a cross-linking group. Since this resin contains a group derived from xylitol, it exhibits an endothermic property.

This resin is preferably a polymer of an ester of xylitol and (meth) acrylic acid. When the cross-linking group is an unsaturated group such as (meth) acrylic acid, xylitol is cross-linked through the cross-linking group as a result of rapid polymerization by heat or light.

This resin is obtained by copolymerizing an ester of xylitol and (meth) acrylic acid with an ester of monool and (meth) acrylic acid or a diester of diol and (meth) acrylic acid. It may be a polymerized product. With xylitol in the copolymerized polymer
The composition ratio of the ester with (meth) acrylic acid is preferably at least 30% by weight. It is even more preferably 50% by weight or more.

Esters of monool and (meth) acrylic acid include 2-hydroxyethyl (meth) acrylate and 2-hydroxyethyl (meth) acrylate.
It is preferably any one of hydroxypropyl (meth) acrylate, polyethylene glycol monomethacrylate, methoxypolyethylene glycol (meth) acrylate, glycidyl (meth) acrylate, and 2-hydroxybutyl (meth) acrylate. Polyethylene glycol monomethacrylate has a number average molecular weight of 90 to 3
More preferably, it was prepared using 50 polyethylene glycol.

Diesters of diol and (meth) acrylic acid include polyethylene glycol-300 di (meth) acrylate and polyethylene glycol-400 di (meth) acrylate.
Polyethylene glycol di (meth) such as acrylate
It is preferably either acrylate or glycerol dimethacrylate.

The endothermic processing agent for fiber materials may contain a thermally crosslinkable resin of either glyoxal resin or melamine resin. The Glyoxal resin includes, for example, Sumitex Resin NS-200 (trade name of Sumitomo Chemical Co., Ltd.), and the melamine resin includes, for example, Sumitex Resin M-3 (trade name of Sumitomo Chemical Co., Ltd.). To be

The textile material treating method of the present invention comprises immersing the textile material in an aqueous solution containing the above-mentioned endothermic processing agent for textile materials, dehydrating and drying, and then heating.

The heating is preferably 110 to 170 ° C.

The fiber materials are cellulose fibers such as cotton and hemp, recycled fibers such as rayon and acetate human silk, synthetic fibers such as nylon and polyester synthetic fibers and acrylic synthetic fibers, and blended fibers thereof. Maybe,
Moreover, these knitted fabrics, woven fabrics, and non-woven fabrics may be used. Above all, it is more preferable to use a knit fabric such as a plain cloth, that is, a cotton fabric.

A xylitol-containing resin or a heat-crosslinkable resin, which is an endothermic finishing agent for a fiber material, penetrates into the interstices between the fibers of the fiber material by immersion, and is crosslinked to have a high molecular weight by heating after drying to coat the surface of the fiber material. And stick. Even if the garment absorbs water when the garment sewn with this fiber material is put on, it feels that it is refreshing due to its endothermic action because of the presence of the xylitol group. Even when heat of hydration is generated by inhalation of water such as cotton clothes, the endothermic action alleviates the heat of hydration.

Therefore, the garment made of the fiber material subjected to this treatment has no discomfort and a refreshing feeling even if it absorbs moisture such as sweat and moisture when it is put on. Further, it has excellent flexibility and is comfortable to wear. Repeated washing of clothes does not impair the refreshing feeling and flexibility.

[0018]

[Examples] Examples of endothermic processing agents for fiber materials to which the present invention is applied will be described in detail.

Examples 1 and 2 below show preparation examples of endothermic processing agents for fiber materials to which the present invention is applied, and Comparative Examples 1 to 1
Reference numeral 5 shows an example of preparation of a processing agent for fiber materials to which the present invention is not applied.

Example 1 100 parts by weight of xylitol methacrylate, 5-hydroxyethyl methacrylate 5
0 parts by weight and 850 parts by weight of deionized water are mixed,
0.5% by weight of the total amount of the azo-based polymerization initiator was added. The temperature was raised to 60 ° C. while blowing nitrogen into this mixed liquid, and the reaction was carried out at the same temperature for 5 hours. As a result, xylitol methacrylate and 2-hydroxyethyl methacrylate were copolymerized to obtain a resin-containing aqueous solution having a viscosity of 10 mpa · s. .

To 20 parts by weight of this resin aqueous solution, 3 parts by weight of Sumitex Resin NS-200 (trade name of Sumitomo Chemical Co., Ltd.) which is a glyoxal resin, and Sumitex Resin MX (Sumitomo Chemical ( (Trade name)
0.5 parts by weight and 76.5 parts by weight of water were added and mixed to obtain an endothermic processing agent for fiber materials.

(Example 2) 0.3 parts by weight of Sumitex Resin M-3 (trade name of Sumitomo Chemical Co., Ltd.), which is a melamine resin, was added to 20 parts by weight of the resin-containing aqueous solution prepared in Example 1. Part, catalyst Sumitex Accelerator X-1
10 (trade name of Sumitomo Chemical Co., Ltd.) 0.1 part by weight, water 7
9.6 parts by weight were added and mixed to obtain an endothermic processing agent for fiber materials.

Comparative Example 1 70 parts by weight of glucosyloxyethyl methacrylate, 30 parts by weight of 2-hydroxyethyl methacrylate, and 0.1% by weight of the total amount of these acrylates, Sumitex Accelerator X-1.
10 and 900 parts by weight of ion-exchanged water were mixed. The temperature was raised to 60 ° C. while blowing nitrogen into this mixed solution, and the reaction was carried out at the same temperature for 6 hours. As a result, glucosyloxyethyl methacrylate and 2-hydroxyethyl methacrylate were copolymerized, and a resin-containing aqueous solution having a viscosity of 12 mpa · s was obtained. Got Thereafter, in the same manner as in Example 1, a heat absorbing agent for fiber material was obtained.

Comparative Example 2 100 parts by weight of D-mannosylethyl methacrylate, 50 parts by weight of 2-hydroxyethyl methacrylate, 0.1% by weight of an azo-based polymerization initiator with respect to the total amount of these acrylates, and ion-exchanged water 850. Parts by weight were mixed. The temperature was raised to 50 ° C. while blowing nitrogen into this mixed solution, and the reaction was carried out at the same temperature for 5 hours. As a result, D-mannosylethyl methacrylate and 2-hydroxyethyl methacrylate were copolymerized, and the viscosity was 15 mp.
A resin-containing aqueous solution of a · s was obtained. Thereafter, in the same manner as in Example 1, a textile material processing agent was obtained.

(Comparative Example 3) 3 parts by weight of xylitol which is a sugar alcohol, 0.3 part by weight of Sumitex resin M-3 which is a thermally crosslinkable resin, and 0. 0 parts of a catalyst of Sumitex Accelerator X-110. 1 part by weight and 96.6 parts by weight of water were mixed to obtain a processing agent for fiber materials.

Comparative Example 4 5 parts by weight of xylitol which is a sugar alcohol, and 5 parts by weight of Light Epoch S-60NFE (a trade name of Kyoeisha Chemical Co., Ltd.) which is a water-soluble acrylic binder of a nonionic silicone-acrylic copolymer. , 5 parts by weight of light resin UN-11 (trade name of Kyoeisha Chemical Co., Ltd.), which is a nonionic water-soluble urethane polymer, and 85 parts by weight of water were mixed to obtain a textile material processing agent.

(Comparative Example 5) 5 parts by weight of pentose sugar xylose,
5 parts by weight of Sumitex Resin NS-200, which is a heat-crosslinkable resin, and Sumitex Accelerator X, which is a catalyst.
2 parts by weight of -110 and 88 parts by weight of water were mixed to obtain a textile material processing agent.

A washing resistance test was conducted on the fiber materials treated with the endothermic processing agents for fiber materials obtained in Examples 1-2 and the processing agents obtained in Comparative Examples 1-5, and the fiber materials before and after washing were tested. The endothermic properties and the respective performances of flexibility were evaluated as follows.

First, a test cloth used as a fiber material was prepared. 3% of 35% hydrogen peroxide water, 1 g of caustic soda, 0.5 g of sodium metasilicate, a scouring agent LightStep SKY (trade name of Kyoeisha Chemical Co., Ltd.) containing a nonionic surfactant and an anionic surfactant as main components. 1 g, 1 g of Srenone P-4871 (trade name of Kyoeisha Chemical Co., Ltd.), which is a fiber protective agent containing a polymer compound for bath softener as a main component, was dissolved in water to 1 L for scouring and bleaching. An aqueous solution was prepared. This solution was placed in a scouring bleaching bath in order to scouring a 30 cm square produced cotton knit cloth. The cloth was soaked so that the volume ratio between the cloth and the aqueous solution, that is, the bath ratio was 1:20, and scouring was carried out at 95 ° C. for 30 minutes. afterwards,
The cloth was washed with water, squeezed and dried at 110 ° C.

After dipping the cloth in each of the endothermic processing agents for fiber materials of Examples 1 to 4 and Comparative Examples 1 to 3, it was squeezed to 80 to 120% by a mangle. Then, it put into a thermostat and dried at 110 degreeC for 4 minutes. Then, it was heated at 150 ° C. for 2 minutes to obtain a test cloth in which a polymer having a higher molecular weight by further crosslinking the resin was formed on the cloth.

Each test cloth was divided into two groups, one group was not washed, the other group was washed, and the resistance to washing was examined by the presence or absence of a decrease in heat absorption before and after washing.

For washing, an aqueous detergent solution having a concentration of 2 g / L in which a synthetic detergent was dissolved in tap water was used. The test cloth and the aqueous solution of this detergent were set to a bath ratio of 1:50, and the bath ratio was 10 for 5 minutes each.
After repeating washing twice, rinsing was repeated 5 times for 2 minutes each with tap water, squeezed to dehydrate, and then dried at 110 ° C.

The unwashed test cloth and the washed test cloth were sequentially folded in half into three folds and folded into eight layers, dried at 120 ° C. for 30 minutes using a hot air circulation dryer, and then placed in a desiccator. It was left to cool for 24 hours. A temperature sensor was sandwiched between the folded test cloths, and the test cloths were placed in a thermo-hygrostat at 30 ° C. and a relative humidity of 90% RH. The temperature of the test cloth at this time was compared with the untreated test cloth as a blank. The test cloth having a temperature lower than that of the blank by 2 ° C. or more showed excellent heat absorption, ◎, the test cloth having a heat absorption lower than 2 ° C., the test cloth having no heat absorption. Was evaluated in three stages with x as x.

Regarding the flexibility of the test cloth after washing,
The visual observation and the tactile sensation when rubbed with hands were examined.

The results are shown in Table 1.

[0036]

[Table 1]

As shown in Table 1, the cloths treated with the endothermic processing agent for fiber materials containing the copolymer of xylitol methacrylate and 2-hydroxymetal methacrylate as in Examples 1 and 2 had endothermic properties. And excellent in flexibility. On the other hand, the processing agent containing no xylitol or the processing agent containing xylitol alone as in Comparative Examples 1 to 5 has poor endotherm and lacks flexibility.

[0038]

As described above in detail, clothes and the like sewn from the cloth treated with the heat absorbing agent for textile material of the present invention exhibit heat absorbing property when absorbing water. There is a refreshing feeling even if it gets wet with sweat. In addition, such clothes have wash resistance, do not impair the refreshing feeling even after repeated washing, and are soft and comfortable to wear.

Claims (6)

[Claims] 1. An endothermic processing agent for a fiber material, which comprises a resin in which xylitol is cross-linked and polymerized through a cross-linking group. 2. The endothermic processing agent for a fiber material according to claim 1, wherein the resin is a polymer of an ester of xylitol and (meth) acrylic acid. 3. The resin comprises an ester of xylitol and (meth) acrylic acid, an ester of monool and (meth) acrylic acid, and an ester of diol and diester of (meth) acrylic acid. The endothermic processing agent for fiber material according to claim 1, which is a copolymerized resin. 4. The ester of monool and (meth) acrylic acid is 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, polyethylene glycol monomethacrylate, methoxy polyethylene glycol (meth) acrylate, Glycidyl
Either (meth) acrylate or 2-hydroxybutyl (meth) acrylate, and diol and (meth)
The endothermic processing agent for fiber materials according to claim 3, wherein the diester with acrylic acid is any one of polyethylene glycol di (meth) acrylate and glycerol dimethacrylate. 5. The endothermic processing agent for a fiber material according to claim 1, which contains a thermally crosslinkable resin of either a glyoxal resin or a melamine resin. 6. A fiber material treatment, which comprises immersing the fiber material in an aqueous solution containing the endothermic processing agent for fiber material according to any one of claims 1 to 3, dehydrating, drying, and then heating. Method.