JP2008297636A - Textile-processing agent, and textile product obtained by using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a processing agent capable of obtaining a comfortable property of an environment in clothes by blocking and/or absorbing heat efficiently and absorbing/releasing the moisture as a steamy feeling emitted from a human body in textile products such as the clothes, uniforms, etc., requiring the blocking of the heat such as solar heat during the summer, blast furnace heat or the like, and also the processing of the textile products by using the processing agent. <P>SOLUTION: The microcapsules having paraffin wax, microcrystalline wax or synthetic wax having a melting point of 40-115°C as an included agent, and having at least 1 kind of a melamine resin, an acrylic acid ester-based resin, a urethane resin, an epoxy-based resin and a silica-based compound as an external encapsulating agent has an effect of blocking and/or absorbing the solar heat. By attaching and fixing the processing agent obtained by combining the microcapsules with a resin binder, having the high moisture-absorbing and releasing properties firmly on the textile products, wearing comfortability in the summer time is improved. Further, in such the case, by using a compound having a dissolution endothermic property and an antibacterial agent simultaneously, the wearing comfortability is improved. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention includes sports clothing, shirts, blouses, summer suits, pants, hats, underwear, socks and other clothing, firewear and blast furnaces and other special clothing, and bedding, bedclothing products such as sheets, carpets, mats, For textile products such as curtains, tents, shelters, hoods, and other industrial materials that do not like solar heat, processed with this processing agent and fiber processing agents with excellent functionality such as heat shielding effect and cooling effect. We are going to provide a textile product.

Conventionally, refreshing of textile products has been an important issue, and technical studies have been made in various directions in order to clear the issue. Specifically, there are the following reports. Processing (Patent Documents 1 to 5) using dissolution endotherm (heat of hydration: negative) of sugar alcohol compounds such as sorbitol, Eristol, and Xylitol, Processing using various ultraviolet absorbers (cutting agents) (Patent Documents 6 to 6) 8), processing using a heat-shielding compound (Patent Documents 9 to 12), moisture absorption / release processing, processing with moisture absorption / release polymer (Patent Documents 13 to 16), and the like. However, none of them is satisfactory, and further improvement in performance is desired in the industry.

Japanese Patent Laid-Open No. 05-279938 Japanese Patent Laid-Open No. 08-158186 Japanese Laid-Open Patent Application No. 09-095864 JP 2000-34679 A JP 2004-115964 A JP 05-117508 A Japanese Patent Laid-Open No. 10-226518 JP 2001-139926 A JP 05-247723 A Japanese Patent Laid-Open No. 08-092842 JP-A-2005-325481 JP 2005-538016 Gazette Japanese Patent Laid-Open No. 09-241925 JP-A-11-279842 JP 2000-226766 A JP 2002-371470 A

When wearing textiles such as clothing, under the hot and humid conditions in the summer, they feel very uncomfortable due to stuffiness. The main factors include solar heat in summer, an increase in human body temperature at high temperatures, and sweating from the human body (insensitive digestion). These unpleasant factors overlap, and humans feel very uncomfortable and strongly desire to improve this situation. In the present invention, in order to achieve a comfortable garment situation when wearing while avoiding such unpleasant state, it is an object to develop a cooling processing agent and to improve the comfort during wearing by processing a textile product with the processing agent And In addition to clothing, industrial materials such as bedding, car seats, shelters, and the like have a challenge to create a comfortable environmental situation, as with clothing.

In the present invention, in order to clear such a problem, the following measures are taken. That is, the paraffin wax, microcrystalline wax, or synthetic wax of the encapsulant (A) is at least one of the melamine resin, acrylate resin, urethane resin, epoxy resin, and silica compound of the encapsulant (B). A processing agent comprising a microcapsule encapsulated with seeds and a compound such as a resin binder for firmly attaching and fixing the microcapsule to the fiber surface is processed into a fiber. At that time, if an organic or inorganic compound having moisture absorption / release properties is used as the resin binder-like compound, the object of the present invention can be achieved more easily. In addition, when sugar alcohols such as xylitol, erythritol, and sorbitol are included in the above, a synergistic effect is exhibited as compared with single use, and washing durability tends to be improved. Furthermore, when combined with at least one antibacterial agent such as silver nanocolloid, nanoparticle zinc oxide, silver zeolite, chitosan, and zinc pyrithione, antibacterial deodorization performance based on human sweat at the time of wearing is added particularly in the case of clothing. As a result, the wear comfort is further increased, and this point is also one of the points of the present invention.

By adopting the above-mentioned solution, in order to suppress the effects of solar heat in summer, treatment of insensitive fumigation (main cause of stuffiness) based on sweating from the human body, and further to suppress the rise in human body temperature, dissolved endothermic (negative In combination with the inclusion and inclusion of compounds that have the heat of hydration) and the combination of antibacterial deodorants with nano-particle size, the comfort of wearing is improved in the case of clothing, and in the case of interiors, bedding and industrial materials. Contributes to creating a comfortable environment.

Specific contents for maximizing the effects of the present invention will be described. Examples of the paraffin wax, microcrystalline wax or synthetic wax used for the microcapsule encapsulation (A) in the present invention include normal paraffin, isoparaffin and cycloparaffin having a melting point of 40 to 115 ° C. Paraffin wax is a solid wax having a melting point of 40 to 70 ° C. separated from a vacuum distillation extract, and microcrystalline wax is a melting point of 70 to 100 ° C. separated from a vacuum distillation bottom or heavy distillate. The solid wax. The synthetic wax referred to here is a kind of hydrocarbon-based synthetic wax called Fischer-Tropsch wax, which is a paraffin wax having a high normality and a melting point of 100 ° C. and 115 ° C. with very few impurities. In particular, the encapsulating agent (A) preferably has a melting point of about 50 to 70 ° C. in order to achieve the objects and problems of the present invention. The reason why the melting point of the encapsulating agent (A) is preferably 40 to 115 ° C. is as follows. When the melting point is 40 ° C. or lower, the effect of the present invention cannot be obtained. On the other hand, when the melting point is 115 ° C. or higher, it is extremely difficult to manufacture microcapsules.

Next, the outer packaging agent (B) that encloses the inner packaging agent will be described. Examples of the outer packaging (B) include melamine resins, acrylic ester resins, urethane resins, epoxy resins, silica compounds, and the like. In order to achieve the object of the present invention, it is best to use a melamine resin or a silica / epoxy resin. This is because melamine resin has higher resin strength than other resins. In this case, the melamine residue is feared, but in the present invention, the problem can be solved by performing a formaldehyde treatment. In addition, the method of coating with a porous silica-based resin and then coating with an epoxy resin is preferable because a strong film strength can be obtained in the same way as with a melamine resin. Tend to be lower.

A good heat shielding effect such as solar heat can be obtained by producing microcapsules with the encapsulating agent / external packaging agent. When the encapsulating agent is used alone, sublimation occurs due to heat, and there is no practicality such as lack of washing resistance. However, by using microcapsules, this problem can be avoided and the object of the present invention can be achieved. Specifically, the amount of the microcapsules is preferably used within a range of 3 to 20%, and more preferably within a range of 5 to 15% in order to achieve the object of the present invention. At this time, if the amount of the microcapsules used is 20% or more, the texture becomes inferior and unpractical, and if it is 3% or less, the desired effect cannot be obtained.

By the way, in the technique using the conventional heat-shielding compound, the ultraviolet-ray transmittance etc. are used for the measuring method of a heat-shielding effect, and the clear effect of heat-shielding cannot be confirmed. In the present invention, by using the microcapsules, it is possible to obtain a heat shielding effect of −3 to −5 ° C. as compared with a raw product.

The following are mentioned as the textiles which process this microcapsule. Sports apparel, shirts, blouses, summer suits, pants, hats, underwear, socks and other apparel, special clothing such as fire-fighting clothing and blast furnaces, and bedding textile products such as futons and sheets, and carpets, mats, curtains, etc. It is used for industrial materials that dislike solar heat, such as interior textile products, tents, shelters, and hoods.

The fiber product referred to in the present invention means all fibers and fabrics composed of natural fibers such as cotton, wool and silk, semi-synthetic fibers such as rayon and lyocell, and further synthetic fibers such as polyester and acrylic.

When the microcapsules are added to fibers or fabrics, the binder is silicone resin, silicone / acrylic copolymer, epoxy silicone resin, epoxy silicone / urethane combined compound or copolymer, acrylic / urethane combined compound or copolymer In particular, silicone resin and acrylic / silicone copolymer are preferable for achieving the object of the present invention.

Further, unlike the above-mentioned resin binder-like compounds, it is more effective to use organic compounds and inorganic compounds having moisture absorption / release properties. Specifically, as an organic compound, polyethylene oxide, a copolymer of polyethylene oxide and polypropylene oxide, or other compounds having a hydrophilic group such as a hydroxyl group or a carboxyl group are reacted more than usual. Moisture absorption / release of polyurethane resin or urethane prepolymer resin with moisture absorption / release performance, and acrylic acid, methacrylic acid, 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPA) having moisture absorption / release properties Examples thereof include moisture-absorbing / releasing polymers obtained by copolymerizing monomers having performance alone or various vinyl monomers obtained by adding acrylamide, hydroxyethylene acrylate, or polyethylene glycol thereto. On the other hand, examples of the hygroscopic inorganic compound include a silica compound. In this case, it is preferable to use in combination with the aforementioned resin binder or an organic compound having hygroscopic performance.

In the present invention, the above-described microcapsule dispersion and binder solution are used in combination, and the mixing ratio at that time is preferably in the range of 5:95 to 95: 5 of the microcapsule dispersion: binder, of which 50: A range of 50 to 80:20 can be said to be a more preferable range for achieving the object of the present invention. In this blending range, if the blending ratio of the microcapsules is lower than this range, the heat shielding effect such as solar heat becomes poor.On the other hand, if the blending ratio is greater than this range, the texture of the garment especially when processed into clothing. As a result, the texture becomes extremely rough and the washing durability of the effect of the present invention is remarkably lowered, resulting in poor practicality.

Next, in the present invention, a compound is used in combination in order to further improve the coolness. This compound means an endothermic reaction (negative heat of hydration) when dissolved in water, specifically, Xylitol, erythritol, sorbite compound, etc. Since these compounds are water-soluble, it is preferable to use them in an emulsion wrapped with an oil-soluble oil substance since the washing durability of the performance is improved. The compounding ratio of this compound is preferably 10 to 60% of the binder usage.

Next, in the present invention, a compound having antibacterial and deodorizing properties is used in combination. Specifically, there are silver nanocolloid, nano-sized zinc oxide, silver zeolite, chitosan, zinc pyrithione and the like. The meaning of using these compounds in combination is that, as described above, when worn on clothing etc., the sweated secretions from the human body adhere to the clothing and are decomposed by general resident bacteria, resulting in ammonia odor, acetic acid odor It causes unpleasant odor generation such as isovaleric acid odor and impairs wearing comfort, but it can be prevented in advance by using the antibacterial deodorant in combination. In addition, as the combined use amount in that case, the range of 3-50% of binder usage-amount is preferable.

In the present invention, the means for applying the processing agent to the fiber fabrics is not particularly limited, and any method such as a normal pad-cure method, pad-spray method, dipping method-cure method, or coating method may be used. good.

In the present invention, the heat shielding data was measured by the following method.
After the fiber fabrics to be tested are cut out and wound around a temperature sensor, a temperature change is measured by irradiating a reflex lamp. The measurement is always performed simultaneously with the unprocessed product, and the maximum temperature difference and the minimum temperature difference of the unprocessed product are measured when the temperature rise of the unprocessed product is 45 ° C. or more.
Sample size: 3cm x 4cm
Measurement conditions: The temperature rise of the unprocessed cloth is 45 ° C. or higher in the reflex lamp irradiation state.
Measurement time: 60 minutes

The refreshing feeling (contact cooling feeling) in the present invention was measured by measuring the Qmax value.
Measuring device: Precision rapid physical measuring device KES-F7 Thermolab type 2 Measurement conditions: 20 ° C, 65% RH

The data of washing durability in the present invention was obtained based on JIS L-0217 103 method.
Hereinafter, the present invention will be further described with reference to examples.

(Microcapsule production method)
6.5 g of 37% formaldehyde aqueous solution and 10 g of water were added to 5 g of melamine powder to adjust the pH to 8, and then heated to about 70 ° C. to obtain an aqueous solution of melamine-formalin initial condensate. 80 g of paraffin wax having a melting point of 60 ° C. is added with vigorous stirring to 100 g of an aqueous sodium salt solution of 5% styrene-maleic anhydride copolymer adjusted to pH 4.5, so that the particle size becomes about 1 to 10 μm. Until the emulsification. The total amount of the melamine-formaldehyde precondensation aqueous solution was added to this emulsion and stirred at 70 ° C. for 2 hours, and then the pH was adjusted to 9 to complete encapsulation. The encapsulation rate of the obtained microcapsules is 80%. The microcapsule dispersion was diluted with water and adjusted to a solid content concentration of 20%.
(Fiber treatment)
5 parts of the above-mentioned microcapsule dispersion adjusted to a solid content concentration of 20% and 3 parts of a silicone / acrylic resin binder (Parazol GH-S (solid content: 40%): manufactured by Ohara Palladium Chemical Co., Ltd.) are water. A processing liquid was obtained by uniformly mixing in 92 parts. At this time, the mixing ratio of the microcapsule dispersion and the binder is 63:37. Next, 100% cotton plain woven fabric was dipped in this processing solution, padded at 100% with a mangle, dried at 100 ° C. for 3 minutes, and heat treated at 160 ° C. for 1 minute. The heat shielding effect of this processed fabric was -4.5 ° C to -4.0 ° C compared to the unprocessed fabric.
(Comparative Example 1)
The same processing agent as in Example 1 was prepared using paraffin wax having a melting point of 32 ° C. as the inclusion agent instead of paraffin wax having a melting point of 60 ° C. as the inclusion agent in Example 1, and the fiber treatment was performed under the same conditions. went. The heat shielding effect with this work cloth was not obtained.
(Comparative Example 2)
Although the encapsulation of Example 1 was attempted to be microencapsulated using a synthetic wax having a melting point of 115 ° C. instead of paraffin wax having a melting point of 60 ° C., microcapsules were not obtained.
(Comparative Example 3)
5 parts of microcapsule dispersion (solid content 20%) and 1 part of silicon / acrylic resin binder (PARASOL GH-S (solid content: 40%): Ohara Palladium Chemical Co., Ltd.) in 94 parts of water A processing solution was obtained by mixing uniformly. The blending ratio of the microcapsule dispersion and the binder at this time is 83:17. Next, 100% cotton plain woven fabric was dipped in this processing solution, padded at 100% with a mangle, dried at 100 ° C. for 3 minutes, and heat treated at 160 ° C. for 1 minute. The heat shielding initial effect of this processed fabric was -4.5 ° C to -4.0 ° C compared to the unprocessed fabric, and -1.5 ° C to -1.0 ° C after 10 washes. Since the heat shielding effect after 10 washings in Example 1 is −3.5 ° C. to −3.0 ° C. compared to the unprocessed cloth, the washing durability is inferior in Comparative Example 3.
(Comparative Example 4)
5 parts of microcapsule dispersion (solid content concentration 20%) and 10 parts of silicon / acrylic resin binder (Parazol GH-S (solid content: 40%): manufactured by Ohara Palladium Chemical Co., Ltd.) in 85 parts of water A processing solution was obtained by mixing uniformly. At this time, the mixing ratio of the microcapsule dispersion and the binder is 33:67. Next, 100% cotton plain woven fabric was dipped in this processing solution, padded at 100% with a mangle, dried at 100 ° C. for 3 minutes, and heat treated at 160 ° C. for 1 minute. In this processed cloth, the heat shielding effect was −4.5 ° C. to −4.0 ° C. compared to the unprocessed cloth, which was the same as that of Example 1, but the texture was rough.

(Fiber treatment)
5 parts of the same microcapsule dispersion (solid content concentration 20%) as in Example 1 and 3 parts of a silicone resin binder (pararesin PS-200 (solid content: 20%): manufactured by Ohara Palladium Chemical Co., Ltd.) It was mixed uniformly with 92 parts of water to obtain a working fluid. At this time, the mixing ratio of the microcapsule dispersion and the binder is 63:37. A 100% cotton plain woven fabric was dipped in this working solution, padded at 100% with a mangle, dried at 100 ° C. for 3 minutes, and heat treated at 160 ° C. for 1 minute. The heat shielding effect of this processed fabric was -4.5 ° C to -4.0 ° C compared with the unprocessed fabric, and the same effect as that obtained when silicon / acrylic resin was used as the binder of Example 1 was obtained.

(Fiber treatment)
5 parts of a microcapsule similar to Example 1 and 3 parts of a polyurethane resin processing agent having moisture absorption and release properties (Pararesin U-416 (solid content: 40%): Ohara Palladium Chemical Co., Ltd.), 40% of xylitol 3 parts of the aqueous solution was uniformly mixed with 89 parts of water to obtain a working solution. The blending ratio of the binder and xylitol 40% aqueous solution at this time is 50:50. A polyester synthetic fiber 100% plain woven fabric was dipped in this processing solution, subjected to padding at 100% with a mangle, dried at 100 ° C. for 3 minutes, and heat treated at 160 ° C. for 1 minute. The heat shielding effect of this work cloth was −4.5 ° C. to −4.0 ° C. compared to the unprocessed cloth. Moreover, the contact cooling sensation (Qmax value) of this effect was as large as 0.648, and the cooling effect was high.
(Comparative Example 5)
Without processing any 100% polyester synthetic fiber 100% plain fabric similar to that used in Example 3 and measuring the contact cooling sensation (Qmax value) in that state, 0.440 is low compared to this example, There was no refreshing feeling.

(Fiber treatment)
5 parts of the same microcapsules as in Example 1 and 3 parts of a polyurethane resin processing agent having a moisture absorption / release property (solid content: 40%), a nanoparticle diameter zinc oxide processing agent (parafine ZO (solid content: 14%): 4 parts of Ohara Palladium Chemical Co., Ltd.) were uniformly mixed with 88 parts of water to obtain a working solution. The blending ratio of the binder and the nanoparticle diameter zinc oxide processing agent at this time is 43:57. A polyester synthetic fiber 100% plain woven fabric was dipped in this processing solution, subjected to padding at 100% with a mangle, dried at 100 ° C. for 3 minutes, and heat treated at 160 ° C. for 1 minute. The heat shielding effect of this processed fabric was -4.5 ° C to -4.0 ° C compared to the unprocessed fabric. In addition, the antibacterial activity of this processed cloth had an antibacterial effect with a bacteriostatic activity value of 2.2 or more at the beginning of processing and after 10 washings.

(Microcapsule production method)
60 g of paraffin wax having a melting point of 60 ° C. was added to 50 g of a porous cell made of silica-based resin having a particle diameter of 10 μm (manufactured by Suzuki Oil & Fats Co., Ltd.), and after vigorous stirring at 65 ° C. for 30 minutes, Microcapsules encapsulating wax were obtained. 100 parts of water is added to the microcapsules to make a slurry, 20 parts of an epoxy resin emulsion (manufactured by Kyoeisha Yushi Co., Ltd.) is added, and the mixture is further stirred for 30 minutes. After coating the resin, water was added to obtain a microcapsule with a high film strength having a solid content of 40% in which 50% of paraffin wax having a melting point of 60 ° C. was included.
(Fiber treatment)
4 parts of the above microcapsule dispersion adjusted to a solid content concentration of 40% and 3 parts of a silicone / acrylic resin binder (Parazol GH-S (solid content: 40%): manufactured by Ohara Palladium Chemical Co., Ltd.) are water. A processing liquid was obtained by uniformly mixing in 92 parts. At this time, the blending ratio of the microcapsule dispersion and the binder is 60:40. Next, 100% cotton plain woven fabric was dipped in this processing solution, padded at 100% with a mangle, dried at 100 ° C. for 3 minutes, and heat treated at 160 ° C. for 1 minute. The heat shielding effect of this processed fabric was -4.5 ° C to -4.0 ° C compared to the unprocessed fabric.

Claims (1)

The encapsulating agent (A) has a melting point of 40 to 115 ° C., and paraffin wax, microcrystalline wax or synthetic wax is at least one of melamine resin, acrylate resin, urethane resin, epoxy resin and silica compound. A processing method using a microcapsule processing agent having a heat shielding effect and / or a heat absorption effect such as solar heat included, and a fiber product processed using the processing agent and a resin binder.