JPH11172576A - Antistatic agent - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a fiber-treating agent composition capable of imparting an excellent antistatic performance and the same or higher color-deepening effect as or than that in a case using a color-deepening agent alone by together using a specific compound as an antistatic agent and a color-deepening agent. SOLUTION: This fiber-treating agent composition comprises a color- deepening agent containing at least one kind of resin selected from the group of urethane resins, fluororesins, silicones, vinylic resins and acrylic resins as an essential component and an antistatic agent containing a compound of the formula (at least one of R1 , R2 and R3 is a 1-4C alkyl and the others are H and/or a 1-4C alkyl; A is a 1-2C alkylene), such as sarcosine (N-methylglycine), as an essential component. The treating agent composition is imparted to an article to be dyed, such as a polyester woven fabric, preliminarily dried at 80-140 deg.C, preferably 100-130 deg.C, and subsequently thermally treated at 140-200 deg.C, preferably 160-200 deg.C, to give a color-deepening effect and an antistatic ability to the article.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to an antistatic agent for a fiber structure. More specifically, the present invention relates to an antistatic agent that also improves the effect of a deepening agent that imparts depth and clarity to the color of a dyed fiber structure.

[0002]

2. Description of the Related Art Synthetic fibers, which are one of the fibrous structures, particularly polyester fibers, have two major drawbacks. One is that dust attracts and clings due to static electricity. Another is that the color of the dyed product is inferior in depth and sharpness as compared with natural fibers such as wool and silk. For this reason, research on antistatic and research on darkening the surface of a fiber structure to improve the color depth and clarity of a dyed product have been continued.

[0003] In order to prevent charging of the fiber structure, a method of leaking generated charges is generally used, and a method of kneading a conductive substance into fibers in advance and a method of applying a conductive substance to a fiber surface are used. Are known. In particular, the latter method, which is industrially simple, is widely used, and reports have been made on antistatic agents to be used for that purpose. Conventionally,
Examples of the compound used for the antistatic agent include a nitrogen-containing compound having a long-chain alkyl group such as a long-chain alkyl quaternary ammonium salt and a long-chain alkyl amino acid derivative. JP-A-5-98570 discloses that a fiber treating agent comprising an N-quaternary ammonium-derived peptide or amino acid having a specific structure has antistatic, antibacterial, deodorant and softening effects, and has high safety. It is disclosed.

[0004] Further, as a method for deepening the color of the surface of the fiber structure, a method based on treatment with a low refractive index compound and a method based on the microcrater effect are known. As the former method using the low refractive index compound treatment, a darkening treatment using a urethane resin, a fluorine resin, a silicone, a vinyl resin, an acrylic resin, or the like is known. JP-A-57-29682 discloses an aqueous resin composition obtained by polymerizing a monomer having a polymerizable unsaturated bond in the presence of a polyurethane emulsion having thermosetting reactivity. There is disclosed a method using a darkening agent, wherein the refractive index of a dried film of the resin composition is 1.50 or less. As the latter method based on the micro crater effect, a darkening treatment using silica fine particles, which is silicon oxide, is known. JP-A-4-214482 discloses a polyester fiber characterized in that a dyed polyester fiber is treated with a polyepoxide compound, then treated with silica fine particles having an amino group, and then treated with a specific amino-modified silicone. Are disclosed.

[0005]

The antistatic treatment and the darkening treatment of synthetic fibers, especially polyester fibers, are often performed simultaneously using a treating agent in which an antistatic agent and a darkening agent are mixed. Here, as the deepening agent, a deepening agent containing a resin such as a urethane resin, a fluorine resin, a silicone, a vinyl resin, or an acrylic resin, which is a low refractive index compound, is widely used. However, when this darkening agent is used in combination with a conventionally known antistatic agent, the darkening effect is reduced as compared with the case where the above-mentioned darkening agent is treated alone. In addition, there is a problem that the stability of a treating agent obtained by mixing a darkening agent and an antistatic agent is impaired, causing precipitation.

[0006]

Means for Solving the Problems The inventors of the present invention have made intensive studies to solve the above-mentioned problems, and as a result, the general formula (I)

[0007]

Embedded image

(Wherein at least one of R ₁ , R ₂ , and R ₃ is an alkyl group having 1 to 4 carbon atoms, and the rest is hydrogen and / or an alkyl group having 1 to 4 carbon atoms. An antistatic agent comprising a compound having a structure of 1 to 2 carbon atoms as an essential component is selected from the group consisting of urethane resins, fluorine resins, silicones, vinyl resins, and acrylic resins, which are low refractive index compounds. By using in combination with a darkening agent containing at least one selected resin as an essential component, an excellent antistatic effect is obtained, and the darkening effect is improved as compared with the case where the darkening agent is treated alone. And that the treating agent obtained by mixing the darkening agent and the antistatic agent is stable, and arrived at the present invention.

That is, the present invention provides an antistatic agent for a fibrous structure comprising a compound having the structure of the following general formula (I) as an essential component.

[0010]

Embedded image

(In the formula, at least one of R ₁ , R ₂ and R ₃ is an alkyl group having 1 to 4 carbon atoms, and the rest is hydrogen and / or an alkyl group having 1 to 4 carbon atoms. It is an alkylene group having 1 to 2 carbon atoms.) In addition, the present invention provides a deep coloration containing at least one resin selected from the group consisting of a urethane resin, a fluororesin, a silicone, a vinyl resin and an acrylic resin as an essential component. An antistatic agent which is used in combination with an agent, wherein the antistatic agent comprises a compound having the structure of the above general formula (I).

Further, the present invention provides a fiber structure comprising a darkening agent containing at least one resin selected from the group consisting of urethane resin, fluorine resin, silicone, vinyl resin and acrylic resin as an essential component, and an antistatic agent. In the method for treating an object, the above-mentioned general formula (I)
And a method for treating a fibrous structure, characterized by using an antistatic agent containing a compound having the following structure as an essential component.

Further, the present invention provides an antistatic agent comprising a compound having the structure of the general formula (I), and at least one resin selected from the group consisting of urethane resins, fluororesins, silicones, vinyl resins and acrylic resins. The present invention provides a fiber treatment composition comprising:

The antistatic agent of the present invention basically comprises a compound represented by the general formula (I), which is an essential component, and a liquid component for applying the compound as a treating agent. It is common to use water.

The deep-coloring agent used in the present invention is a low-refractive index compound such as urethane resin, fluororesin, silicone,
Vinyl resin, at least one or two or more resins selected from the group consisting of acrylic resin as an essential component, and a liquid component for applying this as a treatment agent, it is common to use water as the liquid component It is.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION [Antistatic agent] The antistatic agent of the present invention is used for antistatic processing of a colored solid surface. Dyes or pigments can be used for coloring the solid surface.
The colored solid is typically a fibrous structure. Examples of the fibrous structure include synthetic fibers such as polyester-based and polyamide-based fibers and natural fibers such as wool and silk. It can be effectively applied to polyester fibers that are easy to color and have poor depth and sharpness. The form of the fiber structure may be any form such as a yarn, a woven fabric, a knitted fabric, and a nonwoven fabric.

The antistatic agent of the present invention has the general formula (I)
Wherein at least one of R ₁ , R ₂ , and R ₃ has 1 to 4 carbon atoms in formula (I).
Has an alkyl group, preferably a methyl group. If this is not satisfied, the stability when used in combination with the darkening agent will be poor, and the darkening effect and the antistatic effect will be reduced. Specific examples of such compounds include sarcosine (N-methylglycine), N-monoalkylglycine such as sarcosine hydrochloride and salts thereof,
N, N-Dialkylglycine such as N, N-dimethylglycine and N, N-dimethylglycine hydrochloride and salts thereof, N, N, N- such as betaine (N, N, N-trimethylglycine) and betaine hydrochloride Trialkylglycine and its salts, β- (N-
Β- (N-monoalkyl) alanine and salts thereof, such as methyl) alanine, β- (N-methyl) alanine hydrochloride, and β- (N, N-
Β- (N, N-dialkyl) alanine and salts thereof, such as (dimethyl) alanine, β- (N, N-dimethyl) alanine hydrochloride, β
-Alanine betaine (β- (N, N, N-trimethyl) alanine) and β- (N, N, N-
There are trialkyl) alanine and salts thereof, and the higher the degree of alkylation of the N atom, the better. Most preferred are N, N, N-trialkylglycine and its salts, β
-(N, N, N-trialkyl) alanine and its salts, among which betaine and its salts, β-alanine betaine and its salts.

The amount of the compound represented by the general formula (I) in terms of an effective component is 0.01 to 30% by weight, and preferably 0.01 to 30% by weight, based on the weight of the fibrous structure since the compound can efficiently impart an antistatic effect.
It is 0.05 to 25% by weight, more preferably 0.07 to 20% by weight.

[Fiber treatment agent composition] The fiber treatment agent composition of the present invention comprises the above-mentioned antistatic agent of the present invention and a deepening agent comprising a specific resin as essential components. The charging process and the darkening process can be simultaneously performed on the solid fiber structure.

The darkening agent used in the present invention contains at least one resin selected from the group consisting of urethane resin, fluororesin, silicone, vinyl resin and acrylic resin, preferably urethane resin and silicone as essential components. It is a deepening agent, and its effective amount is 0.01 to 0.01% with respect to the fibrous structure since it can efficiently give the deepening effect.
-30% by weight, preferably 0.05-25% by weight, more preferably 0.07-20% by weight.

The fiber treating agent composition of the present invention can be obtained by adding the antistatic agent of the present invention, a deepening agent, and water in any order and stirring. Further, as the antistatic agent and the darkening agent of the present invention, those diluted with water in advance may be used. Although the ratio of the antistatic agent to the darkening agent of the present invention is not limited, it is preferable to use the amount (as an effective component) such that the amount used for the fiber structure falls within the above range.

The pH of the fiber treatment composition of the present invention is preferably 3.0 to 8.0 from the viewpoints of the antistatic effect and the dark color effect on the fiber structure and the stability of the mixed treatment agent.
More preferably 4.0 to 7.0, even more preferably 4.5 to 6.5
It is.

Examples of a method for applying the fiber treating composition of the present invention to a fiber structure include a dipping method, an exhaustion method, and a spraying method using a spray or the like. Then, a heat treatment is performed on the fibrous structure to which the treatment agent composition has been applied, or preliminary drying and heat treatment are performed. The temperature for predrying after application of the treating agent is 80 to 140 ° C, preferably 100 to 130 ° C.
° C. The pre-drying time is 1 minute to 6 minutes, preferably 2 minutes to 4 minutes. When predrying is performed, it is desirable to perform a heat treatment thereafter to increase the durability of the effect of the treating agent composition on the fibrous structure. The heat treatment temperature in that case is 140 to 220 ° C, preferably 160 to 200 ° C. The heat treatment time is 30 seconds to 3 minutes. The heat treatment temperature without pre-drying is 80 to 220 ° C, preferably 100 to 20 ° C.
0 ° C., the heat treatment time is 30 seconds to 5 minutes.

The fiber treatment composition of the present invention may contain, in addition to the above essential components, agents such as an anti-slip agent, a penetrant, and an antifoaming agent. Hereinafter, various performance improving agents will be described, but the present invention is not limited thereto.

Examples of the anti-slip agent include finely divided silica. The effective amount of the anti-slip agent used is
Desirably, the content is 0.01 to 30% by weight based on the fiber structure.

Examples of the penetrant include anionics such as sodium dodecylbenzenesulfonate, sodium lauryl sulfate and sodium alkylnaphthalenesulfonate, ethylene oxide (EO) adducts of nonylphenol or octylphenol, and EOs of alcohols having a relatively short carbon chain. Nonionic penetrants such as adducts are exemplified. The use amount of the penetrant in terms of the effective component is desirably 0.01 to 30% by weight based on the fiber structure.

Examples of the antifoaming agent include silicone-based antifoaming agents. As the silicone-based defoaming agent, an oil-based, oil-compound-based, or emulsion-based one can be added. The amount of defoamer used in terms of effective component is
It is desirable that the amount is 0.01 to 30% by weight based on the darkening agent.

The above-mentioned specific darkening agent and the antistatic agent of the present invention may be applied to a fiber structure as a composition containing both, or may be separately used for the fiber structure. You may give.

[0029]

EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited to the following examples. The percentages in the examples are on a weight basis.

Example 1 (Preparation of Fiber Treatment Agent Composition) A fiber treatment agent composition was prepared using a combination of an antistatic agent and a darkening agent shown in Table 1, and the stability of each composition was evaluated. Here, the concentration of the antistatic agent in the composition was 0.1% in terms of the effective component, the concentration of the coloring agent was 0.6% in terms of the effective component, and the balance was water. In addition, all the fiber treating agent compositions in Table 1 were adjusted to pH = 6.0.

(Evaluation Method of Stability) The stability of the composition is as follows.
After the preparation, the state 12 hours later was visually evaluated. The results are shown in Table 1, where １ indicates a uniform state, and X indicates an uneven state with precipitation or the like.

[0032]

[Table 1]

The deepening agents used here are as shown in Table 2 below.

[0034]

[Table 2]

The antistatic agents used as comparative products are shown in Table 3 below.

[0036]

[Table 3]

Example 2 The darkening effect of the fiber treatment composition prepared in Example 1 was evaluated.

(Coloring method of fiber structure) 1) Polyester fabric, 2) acetate / polyester blend fabric, and 3) Wool fabric were prepared by the following methods.

1) Polyester fabric A polyester strong twisted yarn fabric (Milva) is dispersed in a disperse dye [Dian
ix Black HG-FS 200 (Mitsubishi Chemical Corporation), Kayalo
n Polyester Black T200 (Nippon Kayaku Co., Ltd.) and the like, under reduced pressure under alkaline conditions to give a black color.

2) Acetate / polyester blended fabric The acetate / polyester blended fabric was treated with a disperse dye (Kaya
lon Fast Black L (Nippon Kayaku Co., Ltd.) and the like.

3) Wool fabric was dyed black using an acid dye (Kayalon Milling Black TLB, etc.).

(Processing conditions) Table 4 (product of the present invention) or Table 5
A bath of a fiber treatment agent composition containing a combination of an antistatic agent and a darkening agent as shown in (Comparative Product) containing 0.6% of the darkening agent in terms of effective component and 0.1% of the antistatic agent in terms of effective component. It was prepared, adjusted to pH = 6.0, kept at 30 ° C. to room temperature, padded with the fiber structure, squeezed to 100%, and pre-dried at 120 ° C. for 3 minutes. Further heat treatment was performed at 170 ° C. for 1 minute.

(Evaluation method) The dark color effect was measured using a digital spectrophotometer [ERP-80WX manufactured by Tokyo Electric Co., Ltd.]
It was evaluated by the lightness index L value measured using. Tables 4 and 5 show the results. The smaller the L value, the lower the brightness,
It means that the deep color effect is excellent.

[0044]

[Table 4]

[0045]

[Table 5]

L value before dark color processing: polyester fabric L = 12.0 acetate / polyester blend fabric L = 11.6 wool fabric L = 11.5.

Example 3 After the treatment with the fiber treating agent composition was performed in the same manner as in Example 2, the triboelectric voltage (unit: V) was measured according to the JIS L1094B method, and the antistatic effect was evaluated (measurement conditions: 20 ° C, 4
0% RH, using cotton cloth). The results are shown in Table 6 (product of the present invention), 7
(Comparative product). It means that the smaller the friction band voltage, the better the antistatic effect.

[0048]

[Table 6]

[0049]

[Table 7]

Example 4 In Example 2, the antistatic effect was evaluated in the same manner as in Example 3 after treating with a fiber treating agent composition containing only an antistatic agent without a darkening agent. Table 8 shows the results.

[0051]

[Table 8]

[0052]

According to the antistatic agent of the present invention, a stable treating agent composition can be obtained when mixed with a deepening agent. It is possible to provide a prevention effect and a darkening effect equal to or higher than the darkening effect obtained by the single treatment of the darkening agent.

Claims (5)

[Claims] 1. An antistatic agent for a fiber structure comprising a compound having a structure represented by the following general formula (I) as an essential component. Embedded image (In the formula, at least one of R ₁ , R ₂ , and R ₃ is an alkyl group having 1 to 4 carbon atoms, and the rest is hydrogen and / or 1 to 4 carbon atoms.
Is an alkyl group. A is an alkylene group having 1 to 2 carbon atoms. ) 2. An antistatic agent used in combination with a darkening agent containing at least one resin selected from the group consisting of urethane resins, fluororesins, silicones, vinyl resins and acrylic resins as an essential component, The antistatic agent is represented by the following general formula (I): (In the formula, at least one of R ₁ , R ₂ , and R ₃ is an alkyl group having 1 to 4 carbon atoms, and the rest is hydrogen and / or 1 to 4 carbon atoms.
Is an alkyl group. A is an alkylene group having 1 to 2 carbon atoms. An antistatic agent comprising a compound having the structure of (1). 3. The antistatic agent according to claim 1, wherein at least one of R ₁ , R ₂ and R _{3 in} the general formula (I) is a methyl group. 4. A fiber structure is treated with a darkening agent containing at least one resin selected from the group consisting of urethane resin, fluororesin, silicone, vinyl resin and acrylic resin as an essential component, and an antistatic agent. In the method,
As the antistatic agent, the following general formula (I): (In the formula, at least one of R ₁ , R ₂ , and R ₃ is an alkyl group having 1 to 4 carbon atoms, and the rest is hydrogen and / or 1 to 4 carbon atoms.
Is an alkyl group. A is an alkylene group having 1 to 2 carbon atoms. A method for treating a fibrous structure, characterized by using an antistatic agent comprising a compound having the structure of (1) as an essential component. 5. The following general formula (I): (In the formula, at least one of R ₁ , R ₂ , and R ₃ is an alkyl group having 1 to 4 carbon atoms, and the rest is hydrogen and / or 1 to 4 carbon atoms.
Is an alkyl group. A is an alkylene group having 1 to 2 carbon atoms. A) an antistatic agent composed of a compound having the structure described above, and a coloring agent containing at least one resin selected from the group consisting of a urethane resin, a fluororesin, a silicone, a vinyl resin and an acrylic resin as an essential component. Fiber treatment composition.