JP2004360147A - Fiber-treating composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fiber-treating composition imparting an antibacterial performance and a slippery feeling to the fiber, and also equipped jointly with the washing resistance of the anti-bacterial performance and dispersing property for uniformly processing the fiber. <P>SOLUTION: This fiber-treating composition contains a silver-containing conjugate protein obtained by bringing a water soluble protein having 0.1-200 μmol/g content of active thiol group in the protein in contact with a silver salt, an amino-modified silicon and a dispersing agent. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【００３５】
【表２】

【００３６】
表１の結果から、ナイロン布においては比較例１の洗濯後の静菌活性値が１．７と低く、実施例１及び２の洗濯後の静菌活性値がそれぞれ３．０と２．８であることから、実施例１及び実施例２の抗菌性については洗濯耐久性が認められる。実施例１および実施例２の風合は、洗濯操作０回と洗濯操作１０回後の両方において良好であった。
【００３７】
また表２の結果から、綿ブロード布においても同様に、比較例２よりも実施例３および実施例４の薬剤で処理することで、洗濯耐久性のある抗菌加工が施されている事がわかる。風合においても同様で、実施例３と実施例４共に、洗濯操作０回と洗濯操作１０回後の両方で良好な結果が得られた。
【００３８】
繊維処理剤Ａおよび繊維処理剤Ｂの分散安定性は、比較例１および比較例２で用いた処理剤と比べて改善されており、特に分散安定化剤を添加した繊維処理剤Ｂでは分離度が０％であった。
また、ナイロン布・綿ブロード布の両方において、分散安定化剤による抗菌性、洗濯耐久性及び肌触りに対する悪影響は見られなかった。
【００３９】
【発明の効果】
以上の発明により、優れた洗濯耐久性を有する抗菌効果と風合を繊維に付与することが可能な、安全性・分散性にも優れた繊維処理用組成物が得られる。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a composition for treating fibers. More specifically, the present invention relates to a fiber treatment composition which imparts an antibacterial effect and a feeling which have excellent washing durability to fibers.
[0002]
[Prior art]
For various fiber products, many treatment agents and processing techniques have been attempted to improve the water absorption, antibacterial properties, texture, and their washing durability while utilizing the properties of various fiber materials. In flexible processing, amino-modified silicone is used for its unique texture that is durable for washing.
[0003]
In addition, due to the growing interest in antibacterial activities in daily life, many attempts have been made on antibacterial processing agents and processing techniques for textile products. In addition, a treatment for imparting antibacterial properties to textile products is actually performed.
[0004]
On the other hand, the demand for safety is also increasing, and it is necessary to consider the safety of antibacterial processing agents and antibacterial processing technologies for textile products. For example, Japanese Patent No. 3296813 describes a fiber treatment composition containing chitosan, an antibacterial component derived from a natural component, which is said to be highly safe.
[0005]
JP-A-2000-344798 discloses a water-soluble protein and a silver salt having an active thiol group content of 0.1 to 200 µmol / g as an antibacterial component having both safety and antibacterial properties. A water-insoluble silver-containing composite protein obtained by contacting with water in water is described.However, when this is used alone as a fiber, the active ingredient is lost due to repeated washing, so that a fiber material or fiber When applied to antibacterial processing of products, improvement of washing durability is an issue.
[0006]
[Patent Document 1]
Japanese Patent No. 3296813 [Patent Document 2]
JP 2000-344798 A
[Problems to be solved by the invention]
An object of the present invention is to provide a fiber treatment composition which imparts antibacterial performance and slipperiness to fibers, and further has washing durability of the antibacterial performance and dispersibility for uniformly processing the fibers. And
[0008]
[Means for Solving the Problems]
Thus, according to the present invention, a silver-containing composite protein obtained by contacting a water-soluble protein having a content of active thiol groups in a protein of 0.1 to 200 μmol / g with a silver salt in water and amino acid There is provided a composition for treating fiber, comprising a modified silicone and a dispersant.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
As the silver-containing composite protein which is an essential component of the fiber treatment composition of the present invention, those described in JP-A-2000-344798 can be used.
The silver-containing composite protein is a water-insoluble protein obtained by bringing a water-soluble protein having a content of active thiol groups in the protein of 0.1 to 200 μmol / g and a silver salt into contact with water. Specifically, the silver-containing composite protein is obtained by bringing a water-soluble protein into contact with about 0.005 to 3 g of a silver salt such as silver nitrate or silver acetate per gram of the protein in water, for example, in water. The protein can be obtained by gradually adding an aqueous solution of a silver salt thereto while stirring the protein to gradually increase the silver ion concentration in the water.
[0010]
The “water-soluble protein” is not particularly limited as long as the content of the active thiol group is in the range of 0.1 to 200 μmol / g, but is not limited to whey protein, hydrolyzate of whey protein, whey protein. Water solubilizates, hydrolysates of eggshell membrane proteins and water solubilizates of eggshell membrane proteins are preferred.
[0011]
The “active thiol group” means a mercapto group (—SH) that easily reacts with an aqueous solution of a heavy metal compound to generate a metal mercaptide derivative. The content ratio can be measured as an equivalent amount of L-cysteine by preparing a predetermined amount of an aqueous solution of the protein and by the DTNB method (Ellman's method) (Biochemical Experiment Method 10, "Quantification Method for SH Groups", Academic Press). Issue, pages 86-93).
[0012]
"Whey protein" is a protein originally containing a relatively large amount of cystine, and is abundant in whey (whey) by-produced during cheese production. “Eggshell membrane protein” is a water-insoluble protein constituting the inner membrane of the eggshell of bird eggs, and is obtained from chicken eggs, quail eggs, and the like, which are consumed in large quantities in the food industry and the like.
The hydrolyzate or water-solubilized product of whey protein or eggshell membrane protein can be obtained by subjecting them to alkaline hydrolysis, enzymatic degradation or reductive treatment.
[0013]
The amino-modified silicon of the present invention is a polysiloxane compound containing an amino group in its molecular structure. A variety of products are offered to the market from several manufacturers, but are not limited to these.
[0014]
By using the above-mentioned silver-containing composite protein and amino-modified silicone in combination, a fiber treatment composition capable of imparting a laundry-resistant antibacterial effect and texture to textiles can be obtained. However, the dispersibility of the silver-containing composite protein is improved when an oil such as silicone oil is added, whereas the dispersibility of the silver-containing composite protein is reduced when the reactive silicone such as amino-modified silicon is added. Therefore, it is necessary to improve dispersibility.
[0015]
The mixing ratio of the silver composite protein and the amino-modified silicone, which are the active ingredients of the fiber treatment composition of the present invention, is 0.01 to 10 parts by weight of the amino-modified silicon, preferably 1 part by weight of the silver-containing composite protein. 0.1 to 2.5 parts by weight.
[0016]
When the fiber treatment composition of the present invention is used for fibers, the silver-containing composite protein and the amino-modified silicone may be further mixed with water, an oil agent, a dispersant, and the like, and in particular, water may be mixed. This is preferable in the working environment and the safety of textile products.
[0017]
As the dispersion stabilizer of the present invention, a thickener such as a water-soluble polymer and an inorganic clay ore can be used. Natural polymers such as guar gum, locust bean gum, carrageenan, starch, dextran, xanthan gum, gelatin and collagen as water-soluble polymers, and semi-synthetic polymers such as methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, carboxymethyl cellulose, carboxymethyl starch, and alginate And synthetic polymers such as polyvinyl alcohol, polyvinyl pyrrolidone, sodium polyacrylate, and polyethylene glycol. Examples of the inorganic clay ore include smectite and bentonite.
[0018]
As long as the effects of the present invention are not impaired, a surfactant may be contained in addition to the above components. Examples of the surfactant include an aliphatic monocarboxylate, polyoxyethylene alkyl ether carboxylate, N-acyl sarcosine salt, dialkyl sulfosuccinate, alkylbenzene sulfonate, polystyrene sulfonate, polyoxyethylene alkyl ether sulfate. Salt, anionic surfactant such as polyoxyethylene alkyl ether phosphate, nonionic surfactant such as glycerin fatty acid ester, sorbitan fatty acid ester, sucrose fatty acid ester, polyoxyethylene alkyl ether, fatty acid polyoxyethylene glycol, fatty acid alkanolamide And cationic surfactants such as alkylamine salts and quaternary ammonium salts.
[0019]
When fibers and the like are treated using the fiber treating composition of the present invention, generally known treatment methods such as an exhaustion method and a padding method can be used.
The exhaustion method is a method in which an object to be treated such as a fiber fabric is immersed in a processing solution preparation bath, and the processing agent in the bath is specifically adsorbed to the fibers by heating or the like.
The padding method is a method in which an object to be treated such as a fiber woven fabric is immersed in a processing solution preparation bath, the processing solution is squeezed with a mangle roll, dried, heat-treated, and a processing agent is attached to the fibers.
[0020]
The fibers processed using the fiber treatment composition of the present invention include natural fibers such as cotton, silk and wool, regenerated fibers such as viscose rayon, semi-synthetic fibers such as triacetate and diacetate, polyester, nylon and acrylic. Synthetic fibers such as nitriles, and blended fibers thereof are exemplified.
[0021]
【Example】
The present invention will be described below with reference to Preparation Examples and Test Examples, but the present invention is not limited to these Preparation Examples and Test Examples. “%” And “parts” in Examples are based on weight unless otherwise specified. In addition, the antibacterial test of an Example was measured by the following evaluation methods.
[0022]
(Evaluation of antibacterial properties)
In accordance with the "quantitative test-bacterial solution absorption method" described in JIS L 1902 (2002), the fibers subjected to the antibacterial treatment and those washed with water by the following operation were tested using Staphylococcus aureus IFO12732 as a test bacterium. The antibacterial properties were evaluated. The determination of test success is a growth value (log ₁₀ B / A) ≧ 1.5, and the determination of antibacterial activity is a bacteriostatic activity value (log ₁₀ B / C) ≧ 2.0. here,
A: Number of bacteria recovered immediately after inoculation of the standard cloth B: Number of bacteria recovered after 18 hours of cultivation of the standard cloth C: Number of bacteria recovered after 18 hours of cultivation of antibacterial fibers or fibers subjected to washing operations.
[0023]
(Evaluation of the texture of antibacterial fibers)
The hand was evaluated by comparing the softness and slipperiness of the antibacterial treated fibers with good handling. The feeling was evaluated on a four-point scale of "very good" = "◎", "good" = "○", "normal (equivalent to no processing)" = "△", and "bad" = "x".
[0024]
(Evaluation of dispersion stability of fiber treatment agent)
Each prepared fiber treatment agent was dispensed into a test tube (18 × 180 mm), allowed to stand at room temperature for 24 hours, and the ratio of the height of the water layer formed by separation to the total height was measured as “separation degree”. Was evaluated.
[0025]
Preparation Example 1 Preparation of Silver-Containing Composite Protein 5 parts of whey protein (New Zealand Daily Board, trade name: Aracene 895, protein content: about 98%, active thiol group content: about 50 μmol / g) were removed. Dissolved in 75 parts of ionic water. To this aqueous protein solution, an aqueous silver nitrate solution in which 0.3 part of silver nitrate was dissolved in 19.7 parts of deionized water was added, followed by stirring and mixing for 1 hour to obtain a silver composite protein.
[0026]
Preparation Example 2 Preparation of Composition for Fiber Treatment To 80 parts of the silver composite protein of Preparation Example 1, 12 parts of pure water and 8 parts of amino-modified silicon (product name: Oil Si-51, manufactured by Takamatsu Yushi Co., Ltd.) were mixed. An emulsification treatment was performed using a homomixer (TK HOMO MIXER MARK II) manufactured by Tokushu Kika Kogyo Co., Ltd. to obtain a fiber treatment agent A.
[0027]
Preparation Example 3 Preparation of Composition for Fiber Treatment (Containing Dispersion Stabilizer) To 80 parts of the silver-containing composite protein of Preparation Example 1, 11.7 parts of pure water and 8 parts of amino-modified silicon were mixed. The mixture is emulsified using a mixer, and 0.3 parts of xanthan gum (manufactured by Saneigen FFI Co., Ltd., trade name: SAN ACE) is added as a dispersion stabilizer to obtain a fiber treatment agent B. Was.
[0028]
Example 1 Antibacterial Washing Durability Confirmation Test Using a fiber treating agent A, a 4% o. w. The antibacterial treatment was performed so that f was obtained. The antibacterial-treated nylon cloth was washed at 40 ° C. for 5 minutes in a water bath (1:30 as a bath ratio) of 3 g / liter of JAFET standard detergent, and rinsed twice for another 2 minutes in another 40 ° C. water bath. Ten sets of washing operations were performed with one set of washing operations of performing centrifugal dehydration and drying in the shade. Table 1 shows the test results of the antibacterial washing durability together with the unprocessed nylon cloth and Example 2 and Comparative Example 1.
[0029]
Example 2 Antibacterial Washing Durability Confirmation Test Using a fiber treatment agent B, a 4% o. w. The antibacterial treatment was performed so that f was obtained. The same washing operation as in Example 1 was performed for the antibacterial-treated nylon cloth. Table 1 shows the test results of the antibacterial washing durability together with the unprocessed nylon cloth and Example 1 and Comparative Example 1.
[0030]
Example 3 Antibacterial Washing Durability Confirmation Test Using a fiber treating agent A, 4% o. w. Each was antibacterial processed so as to be f. The same washing operation as in Example 1 was carried out on the antibacterial cotton broad cloth. Table 2 shows the antibacterial washing durability test results, together with the unprocessed cotton broad cloth and Example 4 and Comparative Example 2.
[0031]
Example 4 Antibacterial Washing Durability Confirmation Test Using a fiber treatment agent B, 4% o. w. Each was antibacterial processed so as to be f. The same washing operation as in Example 1 was carried out on the antibacterial cotton broad cloth. Table 2 shows the antibacterial washing durability test results, together with the unprocessed cotton broad cloth and Example 3 and Comparative Example 2.
[0032]
Comparative Example 1 Antibacterial Washing Durability Confirmation Test Using a mixture of 80 parts of the silver-containing composite protein prepared in Preparation Example 1 and 20 parts of pure water, the nylon cloth was subjected to antibacterial processing and washed in the same manner as in Example 2. The operation was performed. Table 1 shows the test results of the antibacterial washing durability in combination with the untreated nylon cloth and Examples 1 and 2.
[0033]
Comparative Example 2 Antibacterial Washing Durability Confirmation Test Using a mixture of 80 parts of the silver-containing composite protein prepared in Preparation Example 1 and 20 parts of pure water, antibacterial processing was applied to a cotton broad cloth in the same manner as in Example 3. A washing operation was performed. Table 2 shows the antibacterial washing durability test results in combination with the unprocessed cotton broad cloth and Examples 3 and 4.
[0034]
[Table 1]

[0035]
[Table 2]

[0036]
From the results in Table 1, in the case of the nylon cloth, the bacteriostatic activity value of Comparative Example 1 after washing was as low as 1.7, and the bacteriostatic activity values of Examples 1 and 2 after washing were 3.0 and 2.8, respectively. Therefore, the antibacterial properties of Example 1 and Example 2 indicate washing durability. The feeling of Example 1 and Example 2 was good in both the 0 times of the washing operation and the 10 times after the washing operation.
[0037]
In addition, from the results in Table 2, it can be seen that the cotton broad cloth is similarly treated with the chemicals of Examples 3 and 4 rather than Comparative Example 2 so that antibacterial treatment with washing durability is performed. . The same applies to the feeling, and in both Example 3 and Example 4, good results were obtained both in the washing operation 0 times and after the washing operation 10 times.
[0038]
The dispersion stability of the fiber treatment agent A and the fiber treatment agent B is improved as compared with the treatment agents used in Comparative Example 1 and Comparative Example 2. In particular, the separation degree of the fiber treatment agent B to which the dispersion stabilizer was added was improved. Was 0%.
In addition, in both the nylon cloth and the cotton broad cloth, no adverse effect was observed on the antibacterial property, the washing durability and the feel by the dispersion stabilizer.
[0039]
【The invention's effect】
According to the above invention, a fiber treatment composition which can impart an antibacterial effect and a feeling to fibers having excellent washing durability and excellent in safety and dispersibility can be obtained.

Claims (2)

A silver complex protein obtained by contacting a water-soluble protein having a content of active thiol groups in a protein of 0.1 to 200 μmol / g with a silver salt in water, and amino-modified silicon are contained. Fiber treatment composition. The fiber treatment composition according to claim 1, further comprising a dispersion stabilizer.