Treatment agent for spandex and spandex

Abstract

The present invention provides an elastic fiber treatment agent for an elastic fiber which is excellent in formulation stability during long-term storage, has good retention of a winding shape during spinning, is excellent in unwinding property after winding, and imparts excellent antistatic property to an elastic fiber, and an elastic fiber to which the elastic fiber treatment agent is attached. As a means for solving the problem, the elastic fiber treatment agent of the present invention is characterized by containing dimethyl silicone (A), a carboxylic acid (B) having a branched alkyl group in a molecule, an alcohol (C), and a base component (D) composed of at least one selected from the group consisting of mineral oil and ester oil, wherein the containing ratio of dimethyl silicone (A), the carboxylic acid (B), the alcohol (C), and the base component (D) is such that, when the total is taken as 100 mass%, the carboxylic acid (B) is contained in a ratio of 0.1 to 27.0 mass%.

Description

Technical Field

[0001] The present invention relates to a treatment agent for elastic fibers containing a specific amount of a carboxylic acid (B) having a specific chemical structure, and elastic fibers to which the treatment agent is attached. Background Technology

[0002] Compared with other synthetic fibers, elastic fibers such as polyurethane-based elastic fibers have strong inter-fiber adhesion. Therefore, when the elastic fibers are spun and wound into a package, it is not only difficult to unwrap them stably from the package for processing, but also the elastic fibers have low shape retention after spinning, resulting in the problem of filament deformation of the package.

[0003] In addition, when the antistatic properties of the treatment agent for elastic fibers are low, in addition to thread breakage, there is also the problem of the formulation stability of the treatment agent for elastic fibers.

[0004] To address these issues, treatment agents for elastic fibers containing smoothing agents such as hydrocarbon oils that improve the smoothness of elastic fibers have been proposed. Examples include: a treatment agent for elastic fibers containing a base component, 0.01–30% by mass of a nonionic surfactant with an HLB of 3–15 (Patent Document 1); a treatment agent for elastic fibers containing a base component, 0.1–20% by mass of water, a lower alcohol having a hydrocarbon group with 1–15 carbon atoms or an epoxide alkane adduct of that lower alcohol, and 0.1–30% by mass of an emulsifier (Patent Document 2); and an oiling agent for elastic fibers containing a polyoxyethylene ether-modified polysiloxane with a polyethylene oxide backbone content of 20–80% by mass in the molecule (Patent Document 3), etc. However, no treatment agent for elastic fibers has yet been proposed that can completely solve the aforementioned problems.

[0005] Existing technical documents

[0006] Patent documents

[0007] Patent Document 1: Japanese Patent Application Publication No. 2007-100291

[0008] Patent Document 2: Japanese Patent Application Publication No. 2003-147675

[0009] Patent Document 3: Japanese Patent Application Publication No. 09-268477 Summary of the Invention

[0010] The technical problem solved by the invention

[0011] The technical problem of the present invention is to provide a treatment agent for elastic fibers that has excellent formulation stability during long-term storage, good winding shape retention during spinning, excellent unwinding properties after winding, and imparts excellent antistatic properties to elastic fibers, and elastic fibers with the treatment agent attached thereto.

[0012] Problem-solving methods

[0013] To solve the above problems, the inventors of this application conducted in-depth research and found that by using a base component (D) containing dimethylsiloxane (A), a carboxylic acid (B) with a specific chemical structure, an alcohol (C), and at least one of mineral oil and ester oil, and containing a specific amount of carboxylic acid (B), a treatment agent for elastic fibers with excellent formulation stability, winding shape retention, antistatic properties, and unwinding properties can be obtained, thereby solving the above problems.

[0014] Specifically, the present invention is based on the following points.

[0015] 1. A treatment agent for elastic fibers, characterized in that,

[0016] It contains dimethylsiloxane (A), carboxylic acid (B), alcohol (C) and the following basic component (D), wherein the carboxylic acid (B) has a branched alkyl group in the molecule;

[0017] When the total proportions of dimethylsilicone (A), carboxylic acid (B), alcohol (C), and base component (D) are taken as 100% by mass, the content of carboxylic acid (B) is 0.1% to 27.0% by mass.

[0018] Base ingredient (D): Selected from at least one of mineral oil and ester oil.

[0019] 2. The treatment agent for elastic fibers according to 1, wherein the alcohol (C) contains Guerbetalcohol.

[0020] 3. The treatment agent for elastic fibers according to 1, wherein the carboxylic acid (B) contains a carboxylic acid having 9 or more carbon atoms.

[0021] 4. The elastic fiber treatment agent according to 1, wherein when the total content of the above-mentioned dimethyl silicone (A), the above-mentioned carboxylic acid (B), the above-mentioned alcohol (C) and the above-mentioned base component (D) is 100% by mass, it contains 2.0 to 57.0% by mass of the above-mentioned dimethyl silicone (A), 0.1 to 27.0% by mass of the above-mentioned carboxylic acid (B), 0.1 to 11.0% by mass of the above-mentioned alcohol (C) and 33.0 to 90.0% by mass of the above-mentioned base component (D).

[0022] 5. The treatment agent for elastic fibers according to claim 1, wherein it further comprises at least one organic phosphate ester (E) selected from organic phosphate esters and their amine salts.

[0023] 6. The treatment agent for elastic fibers according to claim 5, wherein,

[0024] When the total proportions of the above-mentioned dimethyl silicone (A), the above-mentioned carboxylic acid (B), the above-mentioned alcohol (C), the above-mentioned base component (D), and the above-mentioned organophosphate ester (E) are taken as 100% by mass, the content is 2.0 to 57.0% by mass of the above-mentioned dimethyl silicone (A), 0.1 to 27.0% by mass of the above-mentioned carboxylic acid (B), 0.1 to 11.0% by mass of the above-mentioned alcohol (C), 33.0 to 90.0% by mass of the above-mentioned base component (D), and 0.1 to 10.0% by mass of the above-mentioned organophosphate ester (E).

[0025] 7. The elastic fiber treatment agent according to 1, wherein it further comprises silicone resin (F).

[0026] 8. The treatment agent for elastic fibers according to 7, wherein,

[0027] When the total proportions of the above-mentioned dimethyl silicone (A), the above-mentioned carboxylic acid (B), the above-mentioned alcohol (C), the above-mentioned base component (D), and the above-mentioned silicone resin (F) are taken as 100% by mass, the content is 2.0 to 57.0% by mass of the above-mentioned dimethyl silicone (A), 0.1 to 27.0% by mass of the above-mentioned carboxylic acid (B), 0.1 to 11.0% by mass of the above-mentioned alcohol (C), 33.0 to 90.0% by mass of the above-mentioned base component (D), and 0.1 to 10.0% by mass of the above-mentioned silicone resin (F).

[0028] 9. An elastic fiber, characterized in that it is coated with any one of the elastic fiber treatment agents described in 1 to 8.

[0029] The effects of the invention

[0030] The elastic fiber treatment agent of the present invention is useful because it can impart excellent antistatic properties to elastic fibers, thus preventing thread breakage.

[0031] Furthermore, the elastic fiber treatment agent of the present invention has excellent unwinding and winding shape retention, so there is no resistance when drawing the yarn from the package and no problems such as yarn breakage. It can unwind stably, and the yarn wound into a package will not deform.

[0032] Furthermore, the elastic fiber treatment agent of the present invention is useful because it has excellent formulation stability and therefore does not separate or precipitate during transportation or storage.

[0033] The elastic fiber treatment agent of the present invention is excellent in terms of formulation stability, retention of winding shape, antistatic properties, and unwinding properties, and is very useful. Detailed Implementation

[0034] <Dimethylsilicone (A)>

[0035] The elastic fiber treatment agent of the present invention contains dimethylsilicone (A) as an essential component.

[0036] The elastic fiber treatment agent of the present invention, by using dimethyl silicone (A) in combination with the base component (D) described later, can appropriately improve the low-temperature stability of the elastic fiber treatment agent. In addition, by using it in combination with carboxylic acid (B), the elastic fibers of the elastic fiber treatment agent of the present invention are endowed with good delamination properties after long-term storage.

[0037] As the dimethylsilicone (A) used in this invention, a commercially available product specified by its kinematic viscosity, etc., can be appropriately used. The kinematic viscosity can be appropriately set, but the kinematic viscosity at 25°C is preferably 2 to 100 mm. 2 The range of / s is more preferably 5 to 70 mm. 2 / s, more preferably 5-50mm 2 / s. If the viscosity is less than 2mm. 2 If the temperature exceeds 100 mm / s, dimethyl silicone may volatilize. 2 If the viscosity is / s, then the solubility of other components in the elastic fiber treatment agent may be reduced. The kinematic viscosity at 25°C refers to the value measured according to JIS Z 8803.

[0038] The elastic fiber treatment agent of the present invention preferably contains dimethyl silicone (A) in the range of 1 to 80.0% by mass relative to the total mass of the treatment agent, more preferably in the range of 1 to 60% by mass, and even more preferably in the range of 2 to 57.0% by mass. From the viewpoint of improving the retention of the wound shape and the unwinding properties of the elastic fiber, it is preferable to contain dimethyl silicone (A) in the above range.

[0039] The elastic fiber treatment agent of the present invention can use one dimethyl silicone (A) alone, or can use two or more dimethyl silicones (A) in combination appropriately.

[0040] <Carboxylic acids with branched alkyl groups (B)>

[0041] The elastic fiber treatment agent of the present invention contains, in addition to the above-mentioned dimethylsiloxane (A), a carboxylic acid (B) with branched alkyl groups as an essential component, and the content of carboxylic acid (B) is in the range of 0.1 to 27.0% by mass relative to the total mass of the treatment agent.

[0042] The carboxylic acid (B) in this invention refers to the carboxylic acid in its free form and does not contain carboxylate salts.

[0043] The elastic fiber treatment agent of the present invention, by containing a specific amount of carboxylic acid (B), exhibits excellent formulation stability, retention of winding shape during spinning, antistatic properties, and unwinding properties.

[0044] The branched alkyl group of the carboxylic acid (B) in this invention is not particularly limited. For example, it can be an alkyl group branched at the α-position, an alkyl group branched at the β-position, etc.

[0045] The number of carbon atoms in the carboxylic acid (B) is not particularly limited, but is preferably 4 to 40, more preferably 6 to 30, and even more preferably 8 to 20. From the perspective of improving the flexibility of elastic fibers, a carboxylic acid (B) containing 9 or more carbon atoms is preferred.

[0046] Examples of carboxylic acids (B) used in this invention include isobutyric acid, isovaleric acid, isohexanoic acid, 2-ethylhexanoic acid, isooctanoic acid, isononanoic acid, isodecanic acid, isotriadecanoic acid, isopalmitic acid, isostearic acid, isoeicosanoic acid, and isohexadecanoic acid.

[0047] The elastic fiber treatment agent of the present invention can use a single carboxylic acid (B) or can use two or more carboxylic acids (B) in appropriate combination.

[0048] <Alcohol(C)>

[0049] The elastic fiber treatment agent of the present invention contains, in addition to the above-mentioned dimethylsiloxane (A) and a carboxylic acid having a branched alkyl group (B), an alcohol (C) as an essential component.

[0050] The elastic fiber treatment agent of the present invention improves the formulation stability of the elastic fiber treatment agent by using carboxylic acid (B) and alcohol (C) together. In addition, it can improve the retention of the winding shape of the elastic fiber during spinning by using it in combination with the base component (D) described later.

[0051] As the alcohol (C) in this invention, from the perspective of improving formulation stability, Guerbert alcohol, i.e., a monoaliphatic alcohol with a branch at the β-position of the alkyl chain, is preferred. Among these, Guerbert alcohol with 6 to 24 carbon atoms is more preferred, and Guerbert alcohol with 12 to 24 carbon atoms is even more preferred.

[0052] Specific examples of guerbert alcohols include, for instance, 2-ethyl-1-propanol, 2-ethyl-1-butanol, 2-ethyl-1-hexanol, 2-ethyl-1-octanol, 2-ethyl-decanol, 2-butyl-1-hexanol, 2-butyl-1-octanol, 2-butyl-1-decanol, 2-hexyl-1-octanol, 2-octyl-1-decanol, 2-octyl-1-dodecanol, 2-hexyl-1-octanol, 2-hexyl-1-dodecanol, 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyl-1-octanol, 2-(4-methylhexyl)-8-methyl-1-decanol, and 2-(1,5-dimethylhexyl)-5,9-dimethyl-1-decanol.

[0053] Specific examples of alcohols (C) other than Gerbert alcohol include, for example, 11-methyl-1-dodecanol, 1-decanol, stearyl alcohol, 2-dodecanol, etc.

[0054] The elastic fiber treatment agent of the present invention preferably contains alcohol (C) in the range of 0.1 to 30.0% by mass relative to the total mass of the treatment agent, more preferably in the range of 0.1 to 20.0% by mass, and even more preferably in the range of 0.1 to 11.0% by mass.

[0055] The elastic fiber treatment agent of the present invention can use one alcohol (C) alone, or can also use two or more alcohols (C) in appropriate combination.

[0056] <Basic Ingredients (D)>

[0057] The elastic fiber treatment agent of the present invention contains, in addition to the above-mentioned dimethyl silicone (A), carboxylic acid (B) having branched alkyl groups, and alcohol (C), a base component (D) as an essential component, wherein the base component (D) is selected from at least one of mineral oil and ester oil.

[0058] The elastic fiber treatment agent of the present invention, by combining carboxylic acid (B), alcohol (C) and base component (D), can improve the retention of the winding shape of elastic fibers during spinning.

[0059] The elastic fiber treatment agent of the present invention preferably contains a base component (D) in the range of 10 to 90.0% by mass relative to the total mass of the treatment agent, more preferably in the range of 20 to 90.0% by mass, and even more preferably in the range of 33.0 to 90.0% by mass.

[0060] (Mineral oil)

[0061] Examples of mineral oils include aromatic hydrocarbons, paraffin hydrocarbons, and naphthene hydrocarbons. More specifically, examples include spindle oil and liquid paraffin.

[0062] The mineral oil used in this invention can be a commercially available product specified by its kinematic viscosity, etc. The kinematic viscosity can be appropriately set, but the preferred kinematic viscosity at 30°C is 2 cSt (mm). 2 / s) above 100cst (mm) 2 / s or less, more preferably 2cst (mm) 2 / s) or more 50cst (mm) 2 (s) or less. It should be noted that the viscosity at 30°C was measured using a Cannon-Fenske viscometer. Additionally, when using multiple mineral oils, the kinematic viscosity of the mixture of all mineral oils is used.

[0063] The elastic fiber treatment agent of the present invention can use a single mineral oil, or can use two or more mineral oils in combination as appropriate.

[0064] (ester oil)

[0065] The base component (D) ester oil that can be used in the elastic fiber treatment agent of the present invention is an ester oil made of fatty acids and alcohols.

[0066] In this invention, if the ester oil has a chemical structure with one ester bond, the mono- or poly-aliphatic carboxylic acid can be a branched or straight-chain fatty acid, a cyclic fatty acid, or a fatty acid with an aromatic ring. There are no particular restrictions on the presence or absence of substituents. The presence of substituents means that the mono- or poly-aliphatic carboxylic acid may optionally have any other bonds or substituents, such as amide bonds, ether bonds, sulfide bonds, disulfide bonds, urethane bonds, etc., or epoxy groups, nitro groups, cyano groups, ketone groups, formyl groups, acetal groups, thioacetal groups, sulfonyl groups, etc.

[0067] Specific examples of ester oils include (1) ester compounds of aliphatic monohydric alcohols and aliphatic monocarboxylic acids such as octyl palmitate, oleic acid oleate, isotriadecyl stearate, and isotetracosyl oleate; (2) 1,6-hexanediol didecanoate, glyceryl trioleate, trimethylolpropane trilaurate, and pentaerythritol tetraoctanoate. (3) Ester compounds of aliphatic monocarboxylic acids such as tetraoctanate, aliphatic monocarboxylic acids, dioleate, diisohexadecyl thiodipropionate, and diisostearate; (4) Ester compounds of aromatic monocarboxylic acids such as benzyl oleate and benzyl laurate; (5) Complete ester compounds of aromatic monocarboxylic acids such as bisphenol A dilaurate; (6) Complete ester compounds of aliphatic monocarboxylic acids such as di(2-ethylhexyl) phthalate, diisostearate isophthalate, and trioctyl trimellitate; (7) Natural oils such as coconut oil, rapeseed oil, sunflower oil, soybean oil, castor oil, sesame oil, fish oil, and tallow.

[0068] The elastic fiber treatment agent of the present invention can use a single ester oil, or can appropriately combine two or more ester oils.

[0069] The elastic fiber treatment agent of the present invention contains the above-mentioned dimethyl silicone (A), a carboxylic acid having a branched alkyl group (B), an alcohol (C), and a base component (D) composed of at least one selected from mineral oil and ester oil as essential components. When the total of (A) to (D) is 100% by mass, it is preferable to contain the above-mentioned dimethyl silicone (A) in a proportion of 2.0 to 57.0% by mass, the above-mentioned carboxylic acid (B) in a proportion of 0.1 to 27.0% by mass, the above-mentioned alcohol (C) in a proportion of 0.1 to 11.0% by mass, and the above-mentioned base component (D) in a proportion of 33.0 to 90.0% by mass. More preferably, it contains the above-mentioned dimethyl silicone (A) in a proportion of 5.0 to 46.0% by mass, the above-mentioned carboxylic acid (B) in a proportion of 0.1 to 26.8% by mass, the above-mentioned alcohol (C) in a proportion of 0.1 to 10.5% by mass, and the above-mentioned base component (D) in a proportion of 33.0 to 87.0% by mass.

[0070] From the perspective of imparting antistatic properties to elastic fibers, the elastic fiber treatment agent of the present invention preferably contains at least one selected from organic phosphate esters and their amine salts as an organic phosphate ester (E).

[0071] As an organophosphate ester (E), it is preferably selected from at least one of phosphate esters having an alkyl group in the molecule or an amine salt thereof, and phosphate esters having a polyoxyalkylene group composed of an oxyalkylene group and an alkyl group in the molecule, or an amine salt thereof.

[0072] There is no particular limitation on the number of carbon atoms in the alkyl group, but the number of carbon atoms is preferably 1 to 32, more preferably 8 to 22. Furthermore, branched alkyl groups are preferred. Specific examples of alkyl groups include methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecanyl, octadecyl, eicosyl, isopropyl, isobutyl, isopentyl, isohexyl, isohexyl, isohexyl, isoctyl, isodecanyl, isoundecyl, isododecyl, isotridecyl, isotetradecyl, isopentadecanyl, isohexadecanyl, isohexadecanyl, isohexadecanyl, isohexadecanyl, isohexadecanyl, and isoeicosyl.

[0073] When using compounds that undergo oxoalkylene addition, oxoalkylene compounds with 2 to 4 carbon atoms are preferred. Specific examples of alkylene oxides include ethylene oxide, propylene oxide, and butane oxide. The number of moles of alkylene oxide added relative to 1 mole of phosphoric acid is preferably 1 to 50 moles, more preferably 1 to 30 moles, and even more preferably 1 to 10 moles.

[0074] There are no particular restrictions on the phosphoric acid that constitutes the organic phosphate ester (E). It can be orthophosphoric acid or polyphosphoric acid such as diphosphate.

[0075] The amines that constitute the amine salts can be any one of primary amines, secondary amines, or tertiary amines. Specific examples of amines that constitute amine salts include, for example: (1) aliphatic amines such as methylamine, dimethylamine, trimethylamine, ethylamine, diethylamine, triethylamine, N-N-diisopropylethylamine, butylamine, dibutylamine, 2-methylbutylamine, tributylamine, octylamine, dimethyllauramine, etc.; (2) aromatic amines or heterocyclic amines such as aniline, N-methylbenzylamine, pyridine, morpholine, piperazine and their derivatives; (3) alkanolamines such as monoethanolamine, N-methylethanolamine, diethanolamine, triethanolamine, isopropanolamine, diisopropanolamine, triisopropanolamine, dibutylethanolamine, butyl diethanolamine, octyl diethanolamine, lauryl diethanolamine, etc.; (4) arylamines such as N-methylbenzylamine; (5) polyoxyethylene alkyl amino ethers such as polyoxyethylene steryl amino ether and polyoxyethylene steryl amino ether; (6) ammonia, etc.

[0076] Specific examples of organophosphates (E) include octylamine salt of 2-ethyl-1-hexyl phosphate, octylamine salt of 2-hexyl-1-decyl phosphate, dioctylamine salt of 2-ethyl-1-hexyl phosphate, dioctylamine salt of 2-hexyl-1-decyl phosphate, dimethyldodecylamine salt of 2-ethyl-1-hexyl phosphate, dimethyldodecylamine salt of 2-ethyl-1-hexyl phosphate, dibutylethanolamine salt of 2-ethyl-1-hexyl phosphate, dibutylethanolamine salt of 6-methyl-1-hexyl phosphate, dibutylethanolamine salt of 7-methyl-1-heptyl phosphate, and 2,6-dimethyl-4-heptyl phosphate. 10-methyl-1-decyl phosphate dibutylethanolamine salt, 2-butyl-1-octyl phosphate dibutylethanolamine salt, 2-butyl-1-decyl phosphate dibutylethanolamine salt, 11-methyl-1-dodecyl phosphate dibutylethanolamine salt, 2-hexyl-1-octyl phosphate dibutylethanolamine salt, 2-hexyl-1-decyl phosphate dibutylethanolamine salt, 2-hexyl-1-dodecyl phosphate dibutylethanolamine salt, 2-octyl-1-decyl phosphate dibutylethanolamine salt, 2-octyl-1-decyl phosphate dibutylethanolamine salt Phosphates of the following organic alcohols when the alcohol is a branched-chain alcohol: dibutyl ethanolamine of dodecyl phosphate, 2-decyl-1-tetradecyl phosphate, 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyl-1-octyl phosphate, 2-(4-methylhexyl)-8-methyl-1-decyl phosphate, 2-(1,5-dimethylhexyl)-5,9-dimethyl-1-decyl phosphate, 2-ethyl-1-hexyl phosphate, and 2-hexyl-1-decyl phosphate. Amine salts; phosphate ester amine salts of octyl phosphate octylamine salt, octadecyl phosphate octylamine salt, octyl phosphate dioctylamine salt, octadecyl phosphate dioctylamine salt, octyl phosphate dimethyl dodecylamine salt, octadecyl phosphate dimethyl dodecylamine salt, octyl phosphate dibutylethanolamine salt, dodecyl phosphate dibutylethanolamine salt, hexadecyl phosphate dibutylethanolamine salt, octadecyl phosphate dibutylethanolamine salt, octadecenyl phosphate dibutylethanolamine salt, octyl phosphate dodecyl diethanolamine salt, octadecyl phosphate dodecyl diethanolamine salt, etc., when the organic alcohol is a straight-chain alcohol, etc.

[0077] The elastic fiber treatment agent of the present invention preferably contains an organophosphate (E) in the range of 0 to 30.0% by mass relative to the total mass of the treatment agent, more preferably in the range of 0.01 to 25.0% by mass, and even more preferably in the range of 0.1 to 20.0% by mass.

[0078] The elastic fiber treatment agent of the present invention can use one organophosphate (E) alone, or can use two or more organophosphates (E) in combination appropriately.

[0079] The elastic fiber treatment agent of the present invention, when containing the above-mentioned dimethyl silicone (A), a carboxylic acid having a branched alkyl group (B), an alcohol (C), a base component (D) selected from mineral oil and ester oil, and an organophosphate ester (E), preferably contains 2.0 to 57.0% by mass of the above-mentioned dimethyl silicone (A), 0.1 to 27.0% by mass of the above-mentioned carboxylic acid (B), and 0.1 to 11.0% by mass of the above-mentioned alcohol when the total of (A) to (E) is 100% by mass. (C), 33.0 to 90.0% by mass of the above-mentioned basic component (D) and 0.1 to 10.0% by mass of the above-mentioned organophosphate ester (E), more preferably containing 5.0 to 46.0% by mass of the above-mentioned dimethyl silicone (A), 0.1 to 26.8% by mass of the above-mentioned carboxylic acid (B), 0.1 to 10.5% by mass of the above-mentioned alcohol (C), 33.0 to 87.0% by mass of the above-mentioned basic component (D) and 0.1 to 9.0% by mass of the above-mentioned organophosphate ester (E).

[0080] <Silicone Resin (F)>

[0081] From the viewpoint of improving the unwinding properties of elastic fibers after winding, the elastic fiber treatment agent of the present invention preferably contains silicone resin (F).

[0082] As the silicone resin (F), at least one selected from MQ silicone resin, MDQ silicone resin, T silicone resin, and MTQ silicone resin is preferred, and most preferably a silicone resin with an M / Q ratio of 0.5 to 1.5. It should be noted that the M, D, T, and Q prefixes to silicone resin are generally used to represent the siloxane units constituting the silicone resin, where M is a general formula R 1 R 2 R 3 SiO 1 / 2 The monofunctional siloxane unit shown is D, which is of the general formula R. 4 R 5 SiO 2 / 2 The difunctional siloxane unit shown has T as its general formula R. 6 SiO 3 / 2 The trifunctional siloxane unit shown has Q as its general formula SiO. 4 / 2 The tetrafunctional siloxane unit shown is an example. Wherein, R... 1 To R 6 It is a hydrocarbon group with 1 to 24 carbon atoms and the general formula -R 7 NHR 8 NH2(R 7 and R 8 (A hydrocarbon group having 2 or 3 carbon atoms) or -R 9NH2(R 9 Organic amino groups, vinyl groups, methanol groups, etc., are shown as hydrocarbon groups (with 2 or 3 carbon atoms).

[0083] The elastic fiber treatment agent of the present invention preferably contains silicone resin (F) in the range of 0 to 12.0% by mass relative to the total mass of the treatment agent, more preferably in the range of 0.01 to 11.0% by mass, and even more preferably in the range of 0.1 to 10.0% by mass.

[0084] The elastic fiber treatment agent of the present invention can use a single silicone resin (F) or can use two or more silicone resins (F) in appropriate combination.

[0085] The elastic fiber treatment agent of the present invention, when containing dimethyl silicone (A), a carboxylic acid having a branched alkyl group (B), an alcohol (C), a base component (D) consisting of at least one selected from mineral oil and ester oil, and a silicone resin (F), preferably contains 2.0 to 57.0% by mass of the above-mentioned dimethyl silicone (A), 0.1 to 27.0% by mass of the above-mentioned carboxylic acid (B), and 0.1 to 11.0% by mass of the above-mentioned base component (D) and silicone resin (F). The above-mentioned alcohol (C), the above-mentioned base component (D) in a proportion of 33.0 to 90.0% by mass, and the above-mentioned silicone resin (F) in a proportion of 0.1 to 10.0% by mass, more preferably containing the above-mentioned dimethyl silicone (A) in a proportion of 5.0 to 46.0% by mass, the above-mentioned carboxylic acid (B) in a proportion of 0.1 to 26.8% by mass, the above-mentioned alcohol (C) in a proportion of 0.1 to 10.5% by mass, the above-mentioned base component (D) in a proportion of 33.0 to 87.0% by mass, and the above-mentioned silicone resin (F) in a proportion of 0.1 to 9.0% by mass.

[0086] The elastic fiber treatment agent of the present invention, when containing dimethyl silicone (A), a carboxylic acid (B) having a branched alkyl group, an alcohol (C), a base component (D) consisting of at least one selected from mineral oil and ester oil, an organophosphate ester (E), and a silicone resin (F), preferably contains 2.0 to 57.0% by mass of the above-mentioned dimethyl silicone (A), 0.1 to 27.0% by mass of the above-mentioned carboxylic acid (B), 0.1 to 11.0% by mass of the above-mentioned alcohol (C), and 33.0 to 90.0% by mass of the above-mentioned base component (D), an organophosphate ester (E), and a silicone resin (F), with the total of components (A), (B), (C), (D), (E), and (F) being 100% by mass. The composition comprises, more preferably, the following proportions: the base component (D), 0.1 to 10.0% by mass of the organophosphate ester (E), and 0.1 to 10.0% by mass of the silicone resin (F); and more preferably, the composition comprises, 5.0 to 46.0% by mass of the dimethyl silicone (A), 0.1 to 26.8% by mass of the carboxylic acid (B), 0.1 to 10.5% by mass of the alcohol (C), 33.0 to 87.0% by mass of the base component (D), 0.1 to 9.0% by mass of the organophosphate ester (E), and 0.1 to 9.0% by mass of the silicone resin (F).

[0087] <Other Ingredients (G)>

[0088] The elastic fiber treatment agent of the present invention may be used in combination with antistatic agents, defoamers, antioxidants, preservatives, rust inhibitors, etc., as other components (G). The amount of other components (G) used can be determined within a range that does not impair the effects of the present invention.

[0089] The elastic fiber treatment agent of the present invention contains dimethyl silicone (A), a specific amount of a carboxylic acid (B) with branched alkyl groups, an alcohol (C), and a base component (D) composed of at least one selected from mineral oil and ester oil as essential components, and may also contain an organophosphate ester (E) and a silicone resin (F) as needed, thereby exhibiting excellent effects in terms of formulation stability, winding shape retention, antistatic properties, and desiccation properties.

[0090] <Elastic Fiber>

[0091] Specific examples of elastic fibers used for attaching the treatment agent of the present invention are not particularly limited, and examples include polyester elastic fibers, polyamide elastic fibers, polyolefin elastic fibers, polyurethane elastic fibers, etc. Polyurethane elastic fibers are preferred. In this case, the effects of the present invention can be more effectively demonstrated.

[0092] The elastic fiber treatment agent of the present invention does not have a particular limitation on the amount of elastic fiber attached, but from the viewpoint of further improving the effect of the present invention, it is preferable to attach it in the range of 0.1% by mass to 10.0% by mass.

[0093] The method for manufacturing the elastic fiber of the present invention can be obtained by applying the elastic fiber to the elastic fiber using the elastic fiber treatment agent of the present invention. As the application method of the treatment agent, a solvent-free application method without dilution is preferred, applied to the elastic fiber during the spinning step of the elastic fiber. Known methods such as roller application, yarn guide application, and spray application can be used as the application method. The application roller is commonly located between the spinneret and the winding traverse device, and is also suitable for the manufacturing method of the present invention. To significantly enhance the effects of the present invention, it is preferable to apply the elastic fiber treatment agent of the present invention to the elastic fiber (such as polyurethane-based elastic fiber) using an application roller located between the stretching rollers.

[0094] The manufacturing method of the elastic fiber used in this invention is not particularly limited and can be any known method. Examples include wet spinning, melt spinning, and dry spinning. From the viewpoint of superior quality and production efficiency of the elastic fiber, dry spinning is preferred.

[0095] Example

[0096] The following examples illustrate the present invention, but the technical scope of the present invention is not limited thereto. It should be noted that in the following examples and comparative examples, "parts" refers to parts by mass, and "%" refers to percentages by mass.

[0097] <Treatment agents for elastic fibers in Examples 1-21 and Comparative Examples 1-11>

[0098] Based on the compositions of the elastic fiber treatment agents of Examples 1 to 21 shown in Table 1 below and the compositions of the elastic fiber treatment agents of Comparative Examples 1 to 11 shown in Table 2 below, the elastic fiber treatment agents were prepared by thoroughly mixing the components.

[0099] Table 1

[0100]

[0101] Table 2

[0102]

[0103] The detailed information of each component recorded in Tables 1 and 2 is as follows.

[0104] <Dimethylsilicone (A)>

[0105] A-1: Kinematic viscosity 10mm 2 dimethyl silicone / s (25℃)

[0106] A-2: Kinematic viscosity 20mm 2 dimethyl silicone / s (25℃)

[0107] A-3: Kinematic viscosity 100mm 2 dimethyl silicone / s (25℃)

[0108] <Carboxylic acids with branched alkyl groups in the molecule (B)>

[0109] B-1: Isoicosanoid

[0110] B-2: Isostearic acid

[0111] B-3: Isopalmitic acid

[0112] B-4: Isooctanoic acid

[0113] rB-1: Nonanoic acid

[0114] <Alcohol(C)>

[0115] C-1:2-Butyl-1-Octanol

[0116] C-2:2-Hexyl-1-Decanol

[0117] C-3:2-Ocyl-1-Dodecanool

[0118] C-4: 11-Methyl-1-dodecanool

[0119] C-5:1-Decanol

[0120] <Basic Ingredients (D)>

[0121] D-1: Kinematic viscosity 4.4 mm 2 mineral oil per s (30℃)

[0122] D-2: Kinematic viscosity 11.4 mm 2 mineral oil per s (30℃)

[0123] D-3: Kinematic viscosity 13.5 mm 2 mineral oil per s (30℃)

[0124] D-4: Kinematic viscosity is 9.8 mm. 2 mineral oil per s (30℃)

[0125] D-5: Kinematic viscosity 14.8 mm 2 mineral oil per s (30℃)

[0126] D-6: Octyl palmitate

[0127] <Organophosphates (E)>

[0128] E-1: Dibutylethanolamine salt of isooctadecyl phosphate ester

[0129] E-2: Dibutylethanolamine salt of isohexadecanol phosphate ester

[0130] E-3: Phosphate of isohexadecanol

[0131] <Silicone Resin (F)>

[0132] F-1: Amino-modified silicone resin

[0133] F-2: Silicone resin

[0134] <Other Ingredients (G)>

[0135] G-1: Dimethylstearylamine

[0136] G-2: Sodium isostearate

[0137] G-3: Laurylamine

[0138] <Evaluation Methods and Evaluation Criteria>

[0139] (1) Evaluation of formulation stability

[0140] [Methods for evaluating the formulation stability of treatment agents for elastic fibers]

[0141] The elastic fibers were treated with the agent and left to stand at 5°C for one month. The stability was evaluated according to the following criteria. It should be noted that after standing at 5°C for one month, no further changes were observed even after continuing to stand under the same conditions.

[0142] Evaluation criteria for the formulation stability of treatment agents for elastic fibers

[0143] ◎◎: No precipitation or separation, and maintains the same homogeneous state as during preparation.

[0144] ◎: A small amount of precipitate forms, but when left at room temperature, it returns to the same homogeneous state as when it was prepared.

[0145] ○: Precipitation occurs, but by stirring at room temperature, it is restored to the same homogeneous state as during preparation.

[0146] ×: Precipitation and separation occur, and even if stirred at room temperature, it will not return to a homogeneous state.

[0147] (2) Evaluation methods for wound shape retention

[0148] [Evaluation Methods for Wrapped Shape Retention]

[0149] A 5.0% treatment agent was applied to 20 denier polyurethane-based elastic fibers using a spinneret oiling method. The fibers were then wound 500g onto a 57mm long cylindrical paper tube using a surface-driven winding machine at a winding speed of 550m / min through a traverse yarn guide with a winding width of 42mm, to obtain a polyurethane-based elastic fiber package.

[0150] For the obtained polyurethane-based elastic fiber rolls (500g rolls), the maximum (Wmax) and minimum (Wmin) winding widths were measured, and the bulge amount (the difference between the two, “Wmax-Wmin”) was calculated. The results were evaluated using the following criteria.

[0151] [Evaluation Criteria for Winding Shape Retention]

[0152] ◎◎: Bulges less than 3mm. (The yarn is not wound or deformed. No uneven tension was found during unwinding.)

[0153] ◎: The bulge is between 3mm and 4.5mm. (The yarn has almost no winding deformation. There is slight tension unevenness during unwinding, but there are no operational problems.)

[0154] ○: The bulge is between 4.5mm and 6mm. (The yarn shows visible winding deformation. Uneven tension was observed during unwinding, but the operation itself was fine.)

[0155] ×: Bulges exceeding 6mm. (The yarn shows visible winding deformation. Uneven tension was observed during unwinding, leading to yarn breakage during operation.)

[0156] (3) Evaluation of the antistatic properties of treatment agents for elastic fibers

[0157] [Evaluation Method for the Antistatic Properties of Treatment Agents for Elastic Fibers]

[0158] Using a resistance meter (SM-5 type manufactured by Toa Denpa Kogyo Co., Ltd.), the resistance value of 5g of freshly spun polyurethane elastic fiber obtained by applying a treatment agent to elastic fiber was measured at 25°C and 40% RH, and the measured value was evaluated according to the following benchmarks.

[0159] [Evaluation criteria for antistatic properties]

[0160] ◎◎: Resistance value less than 1.0 × 10 8 The case of Ω. (The yarn does not vibrate during the warping process.)

[0161] ◎: Resistance value is 1.0 × 10 8 Ω or higher and less than 1.0 × 10 9The situation is as follows: (The yarn vibrates slightly during the warping step, but the operation itself is fine.)

[0162] ○: Resistance value is 1.0 × 10 9 Ω or higher and less than 1.0× 10 The situation is as follows: (The yarn vibrates during the warping process, but the operation itself is fine.)

[0163] ×: Resistance value is 1.0 × 10 10 The above Ω indicates a problem. (During the warping process, the yarn may vibrate or break, causing operational issues.)

[0164] (4) Evaluation of the soothing properties of treatment agents for elastic fibers

[0165] [Methods for evaluating the effectiveness of soothing therapy]

[0166] The feeding section is formed by a first drive roller and a first free roller that are in continuous contact with it on one side, and the winding section is formed by a second drive roller and a second free roller that are in continuous contact with it on the opposite side. The winding section is provided at a horizontal distance of 20 cm from the feeding section.

[0167] A package of dry-spun polyurethane elastic fibers, coated with various treatment agents, is mounted on the first drive roller. The package thickness is unwound to 2 mm and then wound onto the second drive roller.

[0168] The feed speed of the polyurethane elastic fiber from the first drive roller is fixed at 50 m / min. On the other hand, the winding speed of the polyurethane elastic fiber to the second drive roller is gradually increased from 50 m / min, and the polyurethane elastic fiber is forcibly unwound from the roll.

[0169] During forced unwinding, the winding speed V (m / min) of the polyurethane elastic fiber is measured when no yarn skipping occurs between the feed section and the winding section. The unwinding property (%) is calculated from the following formula and evaluated using the following benchmarks.

[0170] [Calculation Formula]

[0171] Relief effect (%) = (V - 50) ÷ 50 × 100 = (V - 50) × 2

[0172] [Evaluation Criteria for Relief]

[0173] ◎◎: Relief effect less than 150% (completely no problem, can provide stable relief).

[0174] ◎: The unwinding property is above 150% and less than 165% (there is slight resistance when pulling the yarn in and out, but there is no breakage and no problem in operation).

[0175] ○: The unwinding property is above 165% and less than 180% (there is resistance when pulling out the yarn, but there is no breakage and there are no problems in operation).

[0176] ×: Unwinding performance is over 180% (resistance exists when pulling out the yarn. There is also the possibility of yarn breakage, causing problems during operation).

[0177] Regarding the evaluation results of (1) formulation stability, (2) winding shape retention, (3) antistatic properties, and (4) desiccation properties mentioned above, the evaluation results of the elastic fiber treatment agents of Examples 1 to 21 are summarized in Table 3, and the evaluation results of the elastic fiber treatment agents of Comparative Examples 1 to 11 are summarized in Table 4.

[0178] Table 3

[0179]

[0180] Table 4

[0181]

[0182] As shown in Table 3, the elastic fiber treatment agents of Examples 1 to 21, which are specific examples of the present invention, exhibit excellent formulation stability during long-term storage, good retention of winding shape during spinning, excellent antistatic properties, and excellent unwinding properties after winding.

[0183] On the other hand, it was confirmed that Comparative Examples 1 and 2, in which the amount of carboxylic acid (B) was higher than the specific amount of the present invention, had poor formulation stability during long-term storage; Comparative Example 3, which did not contain dimethylsiloxane (A), had poor formulation stability and soothing properties; Comparative Example 4, which did not contain carboxylic acid (B), and Comparative Example 6, which contained a straight-chain carboxylic acid different from the carboxylic acid (B) of the present invention, had poor formulation stability, shape retention, antistatic properties, and soothing properties.

[0184] Furthermore, it was confirmed that the formulations of Comparative Example 7 (which does not contain the base ingredient (D)) and Comparative Examples 8-11 (which do not contain alcohol (C)) also had poorer stability and winding shape retention.

Claims

1. A treating agent for elastic fibers, characterized by comprising dimethyl silicone (A), carboxylic acid (B) having a branched alkyl group in the molecule, alcohol (C), and base component (D) described below. The proportion of dimethyl silicone (A), carboxylic acid (B), alcohol (C), and base component (D) is contained in a total of 100 mass% when taken together. The proportion of dimethyl silicone (A), carboxylic acid (B), alcohol (C), and base component (D) is contained in a total of 100 mass% when taken together. The proportion of dimethyl silicone (A), carboxylic acid (B), alcohol (C), and base component (D) is contained in a total of 100 mass% when taken together. The alcohol (C) contains a Guerbet alcohol.

2. The elastic fiber treatment agent according to claim 1, wherein The carboxylic acid (B) contains a carboxylic acid having 9 or more carbon atoms.

3. The elastane treatment agent according to claim 1, wherein, The proportion of dimethyl silicone (A), carboxylic acid (B), alcohol (C), and base component (D) is contained in a total of 100 mass% when taken together.

4. The elastane treatment agent according to claim 1, wherein Also, at least one organic phosphoric acid ester (E) selected from organic phosphoric acid esters and amine salts thereof is contained.

5. The elastane treatment agent according to claim 1, wherein 6. The treating agent for elastic fibers according to claim 5, wherein The proportion of dimethyl silicone (A), carboxylic acid (B), alcohol (C), base component (D), and organic phosphoric acid ester (E) is contained in a total of 100 mass% when taken together. Also, a silicone resin (F) is contained.

7. The elastane treatment agent according to claim 1, wherein 8. The treating agent for elastic fibers according to claim 7, wherein The proportion of dimethyl silicone (A), carboxylic acid (B), alcohol (C), base component (D), and silicone resin (F) is contained in a total of 100 mass% when taken together. Elastic fibers to which the treating agent for elastic fibers described in any one of claims 1 to 8 is attached.

9. An elastomeric fiber, characterized by, ​

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