Treatment agent for polyester synthetic fibers, three-component treatment agent for polyester synthetic fibers, four-component treatment agent for polyester synthetic fibers, and polyester synthetic fibers

Abstract

Provided are treatment agents for synthetic fibers, etc., which can improve the stability of the treatment agent for synthetic fibers, reduce the adhesion of the fiber surface to which the treatment agent for synthetic fibers is applied, and further improve smoothness and antistatic properties. 【Solution means】 The treatment agent for polyester-based synthetic fibers of the present invention contains a predetermined organic phosphate ester compound (A), a predetermined amine ether type surfactant (B), and a predetermined smoothing agent (C). The organic phosphate ester compound (A) is an organic phosphate ester or the like having a hydrocarbon group having 4 to 11 carbon atoms in the molecule. The amine ether type surfactant (B) is one obtained by adding 2 to 100 moles of an alkylene oxide having 2 to 3 carbon atoms to 1 mole of an organic amine having a hydrocarbon group having 8 to 13 carbon atoms in the molecule. The smoothing agent (C) is a polyorganosiloxane or the like.

Description

Technical Field

[0001] The present invention relates to a treatment agent for polyester synthetic fibers, a three-component type treatment agent for polyester synthetic fibers, a four-component type treatment agent for polyester synthetic fibers, and polyester synthetic fibers to which the treatment agent for polyester synthetic fibers is attached.

Background Art

[0002] For example, in the spinning and drawing process, finishing process, etc. of synthetic fibers, a treatment for attaching a treatment agent for synthetic fibers to the surface of the fibers may be performed from viewpoints such as friction reduction and antistatic properties of the synthetic fibers.

[0003] Conventionally, treatment agents for synthetic fibers disclosed in Patent Documents 1 to 3 are known. Patent Document 1 discloses a treatment agent for synthetic fibers containing a potassium alkyl phosphate salt having 16 to 22 carbon atoms, a potassium alkyl phosphate salt having 6 to 8 carbon atoms, a polyoxyalkylene alkyl ether, etc. Patent Document 2 discloses a mixture of an alkali metal salt of an alkyl phosphate having 4 to 18 carbon atoms in the alkyl group, an ester compound obtained from an aliphatic monohydric alcohol having 16 to 22 carbon atoms and an aliphatic monocarboxylic acid having 16 to 22 carbon atoms, etc., and a high-speed spinning oil agent for synthetic fibers containing a nonionic surfactant having a polyoxyalkylene group in the molecule. Patent Document 3 discloses a high-speed spinning oil agent containing a mixture of an alkali metal salt of an alkyl phosphate having 4 to 18 carbon atoms in the alkyl group, an ester compound obtained from an aliphatic monohydric alcohol having 16 to 22 carbon atoms and an aliphatic monocarboxylic acid having 16 to 22 carbon atoms, etc., a predetermined linear polyorganosiloxane, and a nonionic surfactant having a polyoxyalkylene group in the molecule.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

[0005] However, conventional treatment agents for synthetic fibers may produce precipitates or the like due to a decrease in stability, particularly the emulsion stability when the treatment agent for synthetic fibers is in the form of an aqueous dilution. In addition, the adhesion of the fiber surface to which the treatment agent for synthetic fibers is applied may increase, resulting in a decrease in manufacturing characteristics or poor quality. Further, due to the inferior smoothness and antistatic properties of the fibers to which the treatment agent for synthetic fibers is applied, the manufacturing characteristics may decrease or poor quality may occur. [Means for Solving the Problems]

[0006] As a result of research to solve the above problems, the present inventors have found that a composition containing a predetermined organophosphoric acid ester compound (A), a predetermined amine-ether type surfactant (B), and a predetermined smoothing agent (C) is suitable for a treatment agent for polyester-based synthetic fibers.

[0007] Each aspect for solving the above problems will be described. The treatment agent for polyester-based synthetic fibers according to Aspect 1 contains the following organophosphoric acid ester compound (A), the following amine-ether type surfactant (B), and the following smoothing agent (C).

[0008] Organophosphoric acid ester compound (A): An organophosphoric acid ester compound containing at least one organophosphoric acid ester compound (A1) selected from organophosphoric acid esters having a hydrocarbon group with 4 to 11 carbon atoms in the molecule and salts thereof, and at least one organophosphoric acid ester compound (A2) selected from organophosphoric acid esters having a hydrocarbon group with 12 to 20 carbon atoms in the molecule and salts thereof.

[0009] Amine ether type surfactant (B): At least one selected from amine ether type surfactants (B1) which are obtained by adding 2 to 100 moles of alkylene oxide having 2 to 3 carbon atoms to 1 mole of organic amine having a hydrocarbon group with 8 to 13 carbon atoms in the molecule, and salts thereof, and amine ether type surfactants (B2) which are obtained by adding 2 to 100 moles of alkylene oxide having 2 to 3 carbon atoms to 1 mole of organic amine having a hydrocarbon group with 14 to 18 carbon atoms in the molecule, and salts thereof. The amine ether type surfactant contains at least one of them.

[0010] Smoothing agent (C): At least one selected from polyorganosiloxane (C1), hydrocarbon (C2), fatty acid ester (C3), and fatty acid (C4). Aspect 2 is the treatment agent for polyester synthetic fibers according to Aspect 1, wherein the average number of carbon atoms of the hydrocarbon group of the organic amine in the amine ether type surfactant (B1) and the amine ether type surfactant (B2) is 10 or more and 15 or less.

[0011] Aspect 3 is the treatment agent for polyester synthetic fibers according to Aspect 1 or 2, wherein the proportion of ethylene oxide in the alkylene oxide in the amine ether type surfactant (B1) and the amine ether type surfactant (B2) is 80 mol% or more and 100 mol% or less.

[0012] Aspect 4 is the treatment agent for polyester synthetic fibers according to any one of Aspects 1 to 3. When the total content ratio of the organic phosphate compound (A), the amine ether type surfactant (B), and the smoothing agent (C) is 100 parts by mass, the amine ether type surfactant (B) is contained in a ratio of 5 parts by mass or more and 40 parts by mass or less.

[0013] Aspect 5 is a treating agent for polyester synthetic fibers according to any one of Aspects 1 to 4. When the total content ratio of the organic phosphate ester compound (A), the amine ether type surfactant (B), and the smoothing agent (C) is 100 parts by mass, the organic phosphate ester compound (A) is 50 parts by mass or more and 90 parts by mass or less, the amine ether type surfactant (B) is 5 parts by mass or more and 40 parts by mass or less, and the smoothing agent (C) is 0.1 parts by mass or more and 10 parts by mass or less.

[0014] The three-component type first treating agent for polyester synthetic fibers of Aspect 6 is a three-component type first treating agent for polyester synthetic fibers used in combination with a three-component type second treating agent for polyester synthetic fibers containing the following organic phosphate ester compound (A2) and a three-component type third treating agent for polyester synthetic fibers containing the following smoothing agent (C), and is characterized by containing the following organic phosphate ester compound (A1) and the following amine ether type surfactant (B).

[0015] Organic phosphate ester compound (A1): An organic phosphate ester compound which is at least one selected from organic phosphates having a hydrocarbon group having 4 to 11 carbon atoms in the molecule and salts thereof.

[0016] Organic phosphate ester compound (A2): An organic phosphate ester compound which is at least one selected from organic phosphates having a hydrocarbon group having 12 to 20 carbon atoms in the molecule and salts thereof.

[0017] Amine ether type surfactant (B): An amine ether type surfactant containing at least one amine ether type surfactant (B1) selected from those obtained by adding 2 to 100 moles of an alkylene oxide having 2 to 3 carbon atoms to 1 mole of an organic amine having a hydrocarbon group having 8 to 13 carbon atoms in the molecule and salts thereof, and at least one amine ether type surfactant (B2) selected from those obtained by adding 2 to 100 moles of an alkylene oxide having 2 to 3 carbon atoms to 1 mole of an organic amine having a hydrocarbon group having 14 to 18 carbon atoms in the molecule and salts thereof.

[0018] Lubricant (C): At least one selected from polyorganosiloxane (C1), hydrocarbon (C2), fatty acid ester (C3), and fatty acid (C4). The three-component type second treatment agent for polyester synthetic fibers according to Embodiment 7 is a three-component type second treatment agent for polyester synthetic fibers used in combination with a three-component type first treatment agent for polyester synthetic fibers containing the following organic phosphate ester compound (A1) and the following amine-ether type surfactant (B), and a three-component type third treatment agent for polyester synthetic fibers containing the following lubricant (C), and is characterized by containing the following organic phosphate ester compound (A2).

[0019] Organic phosphate ester compound (A1): An organic phosphate ester compound which is at least one selected from organic phosphate esters having a hydrocarbon group having 4 to 11 carbon atoms in the molecule and salts thereof.

[0020] Organic phosphate ester compound (A2): An organic phosphate ester compound which is at least one selected from organic phosphate esters having a hydrocarbon group having 12 to 20 carbon atoms in the molecule and salts thereof.

[0021] Amine-ether type surfactant (B): An amine-ether type surfactant containing at least one amine-ether type surfactant (B1) selected from those obtained by adding 2 to 100 moles of an alkylene oxide having 2 to 3 carbon atoms to 1 mole of an organic amine having a hydrocarbon group having 8 to 13 carbon atoms in the molecule and salts thereof, and at least one amine-ether type surfactant (B2) selected from those obtained by adding 2 to 100 moles of an alkylene oxide having 2 to 3 carbon atoms to 1 mole of an organic amine having a hydrocarbon group having 14 to 18 carbon atoms in the molecule and salts thereof.

[0022] Lubricant (C): At least one selected from polyorganosiloxane (C1), hydrocarbon (C2), fatty acid ester (C3), and fatty acid (C4). The three-component type 3 treatment agent for polyester synthetic fibers of Aspect 8 is a three-component type 3 treatment agent for polyester synthetic fibers that is used in combination with a three-component type 1 treatment agent for polyester synthetic fibers containing the following organic phosphate ester compound (A1) and the following amine ether type surfactant (B), and a three-component type 2 treatment agent for polyester synthetic fibers containing the following organic phosphate ester compound (A2), and is characterized by containing the following smoothing agent (C).

[0023] Organic phosphate ester compound (A1): An organic phosphate ester compound that is at least one selected from organic phosphates having a hydrocarbon group with 4 to 11 carbon atoms in the molecule and salts thereof.

[0024] Organic phosphate ester compound (A2): An organic phosphate ester compound that is at least one selected from organic phosphates having a hydrocarbon group with 12 to 20 carbon atoms in the molecule and salts thereof.

[0025] Amine ether type surfactant (B): An amine ether type surfactant containing at least one amine ether type surfactant (B1) selected from those obtained by adding 2 to 100 moles of an alkylene oxide having 2 to 3 carbon atoms to 1 mole of an organic amine having a hydrocarbon group with 8 to 13 carbon atoms in the molecule and salts thereof, and at least one amine ether type surfactant (B2) selected from those obtained by adding 2 to 100 moles of an alkylene oxide having 2 to 3 carbon atoms to 1 mole of an organic amine having a hydrocarbon group with 14 to 18 carbon atoms in the molecule and salts thereof.

[0026] Smoothing agent (C): At least one selected from polyorganosiloxane (C1), hydrocarbon (C2), fatty acid ester (C3), and fatty acid (C4). The type-4 first treatment agent for polyester synthetic fibers of aspect 9 is a type-4 first treatment agent for polyester synthetic fibers that is used in combination with a type-4 second treatment agent for polyester synthetic fibers containing the following organic phosphate ester compound (A2), a type-4 third treatment agent for polyester synthetic fibers containing the following amine-ether type surfactant (B), and a type-4 fourth treatment agent for polyester synthetic fibers containing the following smoothing agent (C), and is characterized by containing the following organic phosphate ester compound (A1).

[0027] Organic phosphate ester compound (A1): An organic phosphate ester compound that is at least one selected from organic phosphate esters having a hydrocarbon group with 4 to 11 carbon atoms in the molecule and salts thereof.

[0028] Organic phosphate ester compound (A2): An organic phosphate ester compound that is at least one selected from organic phosphate esters having a hydrocarbon group with 12 to 20 carbon atoms in the molecule and salts thereof.

[0029] Amine-ether type surfactant (B): An amine-ether type surfactant containing at least one amine-ether type surfactant (B1) selected from those obtained by adding 2 to 100 moles of an alkylene oxide with 2 to 3 carbon atoms to 1 mole of an organic amine having a hydrocarbon group with 8 to 13 carbon atoms in the molecule and salts thereof, and at least one amine-ether type surfactant (B2) selected from those obtained by adding 2 to 100 moles of an alkylene oxide with 2 to 3 carbon atoms to 1 mole of an organic amine having a hydrocarbon group with 14 to 18 carbon atoms in the molecule and salts thereof.

[0030] Smoothing agent (C): At least one selected from polyorganosiloxane (C1), hydrocarbon (C2), fatty acid ester (C3), and fatty acid (C4). The type-4 second treatment agent for polyester synthetic fibers of aspect 10 is a type-4 second treatment agent for polyester synthetic fibers used in combination with a type-4 first treatment agent for polyester synthetic fibers containing the following organic phosphate ester compound (A1), a type-4 third treatment agent for polyester synthetic fibers containing the following amine ether type surfactant (B), and a type-4 fourth treatment agent for polyester synthetic fibers containing the following lubricant (C), and is characterized by containing the following organic phosphate ester compound (A2).

[0031] Organic phosphate ester compound (A1): An organic phosphate ester compound which is at least one selected from organic phosphate esters having a hydrocarbon group with 4 to 11 carbon atoms in the molecule and salts thereof.

[0032] Organic phosphate ester compound (A2): An organic phosphate ester compound which is at least one selected from organic phosphate esters having a hydrocarbon group with 12 to 20 carbon atoms in the molecule and salts thereof.

[0033] Amine ether type surfactant (B): An amine ether type surfactant containing at least one amine ether type surfactant (B1) selected from those obtained by adding 2 to 100 moles of an alkylene oxide with 2 to 3 carbon atoms to 1 mole of an organic amine having a hydrocarbon group with 8 to 13 carbon atoms in the molecule and salts thereof, and at least one amine ether type surfactant (B2) selected from those obtained by adding 2 to 100 moles of an alkylene oxide with 2 to 3 carbon atoms to 1 mole of an organic amine having a hydrocarbon group with 14 to 18 carbon atoms in the molecule and salts thereof.

[0034] Lubricant (C): At least one selected from polyorganosiloxane (C1), hydrocarbon (C2), fatty acid ester (C3), and fatty acid (C4). The type-4 third treatment agent for polyester synthetic fibers of Mode 11 is a type-4 third treatment agent for polyester synthetic fibers that is used in combination with a type-4 first treatment agent for polyester synthetic fibers containing the following organic phosphate ester compound (A1), a type-4 second treatment agent for polyester synthetic fibers containing the following organic phosphate ester compound (A2), and a type-4 fourth treatment agent for polyester synthetic fibers containing the following smoothing agent (C), and is characterized by containing the following amine ether type surfactant (B).

[0035] Organic phosphate ester compound (A1): An organic phosphate ester compound that is at least one selected from organic phosphate esters having a hydrocarbon group with 4 to 11 carbon atoms in the molecule and salts thereof.

[0036] Organic phosphate ester compound (A2): An organic phosphate ester compound that is at least one selected from organic phosphate esters having a hydrocarbon group with 12 to 20 carbon atoms in the molecule and salts thereof.

[0037] Amine ether type surfactant (B): An amine ether type surfactant containing at least one amine ether type surfactant (B1) selected from those obtained by adding 2 to 100 moles of an alkylene oxide with 2 to 3 carbon atoms to 1 mole of an organic amine having a hydrocarbon group with 8 to 13 carbon atoms in the molecule and salts thereof, and at least one amine ether type surfactant (B2) selected from those obtained by adding 2 to 100 moles of an alkylene oxide with 2 to 3 carbon atoms to 1 mole of an organic amine having a hydrocarbon group with 14 to 18 carbon atoms in the molecule and salts thereof.

[0038] Smoothing agent (C): At least one selected from polyorganosiloxane (C1), hydrocarbon (C2), fatty acid ester (C3), and fatty acid (C4). The fourth treatment agent for polyester synthetic fibers of Mode 12 is a fourth treatment agent for polyester synthetic fibers used in combination with a first treatment agent for polyester synthetic fibers containing the following organic phosphate ester compound (A1), a second treatment agent for polyester synthetic fibers containing the following organic phosphate ester compound (A2), and a third treatment agent for polyester synthetic fibers containing the following amine-ether type surfactant (B), and is characterized by containing the following smoothing agent (C).

[0039] Organic phosphate ester compound (A1): An organic phosphate ester compound which is at least one selected from organic phosphate esters having a hydrocarbon group with 4 to 11 carbon atoms in the molecule and salts thereof.

[0040] Organic phosphate ester compound (A2): An organic phosphate ester compound which is at least one selected from organic phosphate esters having a hydrocarbon group with 12 to 20 carbon atoms in the molecule and salts thereof.

[0041] Amine-ether type surfactant (B): An amine-ether type surfactant containing at least one amine-ether type surfactant (B1) selected from those obtained by adding 2 to 100 moles of an alkylene oxide with 2 to 3 carbon atoms to 1 mole of an organic amine having a hydrocarbon group with 8 to 13 carbon atoms in the molecule and salts thereof, and at least one amine-ether type surfactant (B2) selected from those obtained by adding 2 to 100 moles of an alkylene oxide with 2 to 3 carbon atoms to 1 mole of an organic amine having a hydrocarbon group with 14 to 18 carbon atoms in the molecule and salts thereof.

[0042] Smoothing agent (C): At least one selected from polyorganosiloxane (C1), hydrocarbon (C2), fatty acid ester (C3), and fatty acid (C4). The polyester synthetic fiber of Mode 13 is characterized in that the treatment agent for polyester synthetic fibers described in any one of Modes 1 to 5 is adhered thereto.

[0043] Aspect 14 is the polyester synthetic fiber of Aspect 13, wherein the polyester synthetic fiber is a polyester staple fiber. Aspect 15 is the polyester synthetic fiber of Aspect 13 or 14, wherein the polyester synthetic fiber is for manufacturing spun yarns.

Advantages of the Invention

[0044] According to the present invention, the stability of the treating agent for synthetic fibers can be improved. Further, the adhesion of the fiber surface provided with the treating agent for synthetic fibers can be reduced, and the smoothness and antistatic property can be improved.

Embodiments for Carrying Out the Invention

[0045] <First Embodiment> Hereinafter, a first embodiment in which the treating agent for polyester synthetic fibers of the present invention (hereinafter also referred to as the treating agent) is embodied will be described. The treating agent of this embodiment contains the following organic phosphate ester compound (A), the following amine ether type surfactant (B), and the following smoothing agent (C).

[0046] (Organic Phosphate Ester Compound (A)) The organic phosphate ester compound (A) used in the treating agent of this embodiment is an organic phosphate ester compound containing at least one organic phosphate ester compound (A1) selected from organic phosphate esters having a hydrocarbon group with 4 to 11 carbon atoms in the molecule and salts thereof, and at least one organic phosphate ester compound (A2) selected from organic phosphate esters having a hydrocarbon group with 12 to 20 carbon atoms in the molecule and salts thereof. Further, the organic phosphate ester compound (A1) and the organic phosphate ester compound (A2) may each be an organic phosphate ester compound to which a (poly)alkylene oxide chain is added.

[0047] The antistatic property of the fiber provided with the treating agent can be improved by the organic phosphate ester compound (A1). Further, the adhesiveness of the fiber provided with the treating agent can be reduced by the organic phosphate ester compound (A2).

[0048] (Hydrocarbon group) As the hydrocarbon groups constituting the organic phosphate compound (A1) and the organic phosphate compound (A2), they may each be a saturated hydrocarbon group or an unsaturated hydrocarbon group. Further, they may be a linear hydrocarbon group or a hydrocarbon group having a branched chain.

[0049] As the unsaturated hydrocarbon group, it may be an alkenyl group having one double bond as an unsaturated carbon bond, or an alkadienyl group, an alkatrienyl group, etc. having two or more double bonds. Further, it may be an alkynyl group having one triple bond as an unsaturated carbon bond, or an alkadiynyl group, etc. having two or more triple bonds.

[0050] Examples of the hydrocarbon group constituting the organic phosphate compound (A1) are as follows. Specific examples of the linear saturated hydrocarbon group include, for example, butyl group, pentyl group, hexyl group, heptyl group, octyl group, nonyl group, decyl group, undecyl group, etc.

[0051] Specific examples of the saturated hydrocarbon group having a branched chain include, for example, isobutyl group, isopentyl group, isohexyl group, isheptyl group, isooctyl group, isononyl group, isodecyl group, isoundecyl group, etc.

[0052] Specific examples of the linear unsaturated hydrocarbon group having one double bond in the hydrocarbon group include, for example, butenyl group, pentenyl group, hexenyl group, heptenyl group, octenyl group, nonenyl group, decenyl group, undecenyl group, etc.

[0053] Specific examples of the unsaturated hydrocarbon group having a branched chain structure and having one double bond in the hydrocarbon group include, for example, isobutenyl group, isopentenyl group, isohexenyl group, isheptenyl group, isooctenyl group, isononenyl group, isodecenyl group, isoundecenyl group, etc.

[0054] Examples of the hydrocarbon group constituting the organic phosphate compound (A2) are as follows. Specific examples of the linear saturated hydrocarbon group include, for example, dodecyl group, tridecyl group, tetradecyl group, pentadecyl group, hexadecyl group, heptadecyl group, octadecyl group, icosyl group, etc.

[0055] Specific examples of the saturated hydrocarbon group having a branched chain include, for example, isododecyl group, isotridecyl group, isotetradecyl group, isopentadecyl group, isohexadecyl group, isoheptadecyl group, isooctadecyl group, isicosyl group, etc.

[0056] Specific examples of the linear unsaturated hydrocarbon group having one double bond in the hydrocarbon group include, for example, dodecenyl group, tridecenyl group, tetradecenyl group, pentadecenyl group, hexadecenyl group, heptadecenyl group, octadecenyl group, icosenyl group, etc.

[0057] Specific examples of the unsaturated hydrocarbon group having a branched chain structure and having one double bond in the hydrocarbon group include, for example, isododecenyl group, isotridecenyl group, isotetradecenyl group, isopentadecenyl group, isohexadecenyl group, isoheptadecenyl group, isooctadecenyl group, isicosenyl group, etc.

[0058] ((Poly)alkylene oxide chain) In the case where a (poly)alkylene oxide chain is added to the organic phosphate compound (A), the alkylene oxide used as a raw material for forming the (poly)alkylene oxide chain is preferably an alkylene oxide having 2 to 4 carbon atoms. Specific examples of the alkylene oxide include, for example, ethylene oxide, propylene oxide, butylene oxide and the like. The number of moles of the added alkylene oxide is appropriately set, but is preferably 0.1 mole or more and 60 moles or less, more preferably 1 mole or more and 40 moles or less, still more preferably 2 moles or more and 30 moles or less. Ranges obtained by arbitrarily combining the above upper and lower limits are also assumed. The number of moles of the added alkylene oxide indicates the number of moles of the alkylene oxide per 1 mole of the compound to be added in the charged raw materials. The alkylene oxide may be used alone as one kind of alkylene oxide, or two or more kinds of alkylene oxides may be used in appropriate combination. When two or more kinds of alkylene oxides are applied, their addition forms may be any of block addition, random addition, and a combination of block addition and random addition, and there is no particular limitation.

[0059] (Phosphoric acid) The phosphoric acid constituting the organic phosphate compound (A1) and the organic phosphate compound (A2) is not particularly limited, and may be orthophosphoric acid or a polyphosphoric acid such as diphosphoric acid.

[0060] (Salt) When a salt of an organic phosphate is applied, examples of the salt include a phosphate ester amine salt, a phosphate ester ammonium salt, a phosphate ester metal salt and the like.

[0061] Examples of the metal salt include an alkali metal salt and an alkaline earth metal salt. Specific examples of the alkali metal constituting the alkali metal salt include, for example, sodium, potassium, lithium and the like. Examples of the alkaline earth metal constituting the alkaline earth metal salt include metals belonging to Group 2 elements, such as calcium, magnesium, beryllium, strontium, barium and the like.

[0062] The amine constituting the amine salt may be any of primary amines, secondary amines, and tertiary amines. Specific examples of the amine constituting the amine salt include, for example, (1) aliphatic amines such as methylamine, dimethylamine, trimethylamine, ethylamine, diethylamine, triethylamine, N-N-diisopropylethylamine, butylamine, dibutylamine, 2-methylbutylamine, tributylamine, octylamine, dimethyllaurylamine, etc., (2) aromatic amines or heterocyclic amines such as aniline, N-methylbenzylamine, pyridine, morpholine, piperazine, and their derivatives, etc., (3) alkanolamines such as monoethanolamine, N-methylethanolamine, diethanolamine, triethanolamine, isopropanolamine, diisopropanolamine, triisopropanolamine, dibutylethanolamine, butyldiethanolamine, octyldiethanolamine, lauryldiethanolamine, etc., (4) arylamines such as N-methylbenzylamine, etc., (5) polyoxyalkylene alkylaminoethers such as polyoxyethylene laurylaminoether, polyoxyethylene sterolaminoether, etc.

[0063] (Acid value) The acid values of the organic phosphate compound (A1) and the organic phosphate compound (A2) are not particularly limited, respectively, but are preferably 0 KOH-mg / g or more and 150 KOH-mg / g or less, and more preferably 0 KOH-mg / g or more and 100 KOH-mg / g or less. By defining it within this range, the product handling property can be improved.

[0064] Incidentally, the acid values (KOH-mg / g) of the organic phosphate compound (A1) and the organic phosphate compound (A2) are respectively represented by the following formulas. The organic phosphate compound (A) is dissolved in a mixed solvent of ethanol / xylene = 1 / 2 (volume ratio), and titrated with a 0.1 mol / L potassium hydroxide methanol standard solution by the potentiometric titration method, and calculated from the following formula (1).

[0065] Acid value (KOH - mg / g) = (R × f × 56.11 × 0.1) / S ··· (1) In formula (1) f: Factor of 0.1 mol / L potassium hydroxide methanol standard solution S: Sampling amount (g) of organic phosphate ester compound (A) R: Consumption (mL) of 0.1 mol / L potassium hydroxide methanol standard solution up to the inflection point (Specific examples) Specific examples of the organic phosphate ester compound (A1) include, for example, butyl phosphate ester, hexyl phosphate ester, octyl phosphate ester, undecyl phosphate ester, isoundecyl phosphate ester, phosphate ester of an addition product of alkylene oxide to octyl alcohol, salts thereof, and the like.

[0066] The organic phosphate ester compound (A1) may be used alone or in appropriate combination of two or more kinds. Specific examples of the organic phosphate ester compound (A2) include, for example, lauryl phosphate ester, cetyl phosphate ester, stearyl phosphate ester, arachidyl phosphate ester, and salts thereof.

[0067] The organic phosphate ester compound (A2) may be used alone or in appropriate combination of two or more kinds. (Blending amount) In the treatment agent, the lower limit of the content ratio of the organic phosphate ester compound (A1) is appropriately set, but is preferably 1% by mass or more, more preferably 3% by mass or more. When such a content ratio is 1% by mass or more, the antistatic property of the synthetic fiber to which the treatment agent is applied can be particularly improved. The upper limit of the content ratio of such an organic phosphate ester compound (A1) is appropriately set, but is preferably 30% by mass or less, more preferably 25% by mass or less. When such a content ratio is 30% by mass or less, the effects of the present invention can be further improved. In addition, ranges arbitrarily combining the above upper and lower limits are also assumed.

[0068] In the treatment agent, the lower limit of the content ratio of the organic phosphate ester compound (A2) is appropriately set, but is preferably 20% by mass or more, more preferably 30% by mass or more. When such a content ratio is 20% by mass or more, the adhesiveness of the synthetic fiber to which the treatment agent is applied can be further reduced. The upper limit of the content ratio of such an organic phosphate ester compound (A2) is appropriately set, but is preferably 95% by mass or less, more preferably 90% by mass or less. When such a content ratio is 95% by mass or less, the effects of the present invention can be further improved. In addition, a range in which the above upper and lower limits are arbitrarily combined is also assumed.

[0069] In the treatment agent, the lower limit of the content ratio of the organic phosphate ester compound (A) is appropriately set, but is preferably 30% by mass or more, more preferably 40% by mass or more, still more preferably 50% by mass or more. When such a content ratio is 30% by mass or more, the effects of the present invention can be further improved. The upper limit of the content ratio of such an organic phosphate ester compound (A) is appropriately set, but is preferably 97% by mass or less, more preferably 95% by mass or less, still more preferably 90% by mass or less. When such a content ratio is 97% by mass or less, the effects of the present invention can be further improved. In addition, a range in which the above upper and lower limits are arbitrarily combined is also assumed.

[0070] (amine ether type surfactant (B)) The amine ether type surfactant (B) used in the treatment agent of the present embodiment is at least one selected from those obtained by adding 2 to 100 moles of an alkylene oxide having 2 to 3 carbon atoms to 1 mole of an organic amine having a hydrocarbon group with 8 to 13 carbon atoms in the molecule, and its salts, which is an amine ether type surfactant (B1), and those obtained by adding 2 to 100 moles of an alkylene oxide having 2 to 3 carbon atoms to 1 mole of an organic amine having a hydrocarbon group with 14 to 18 carbon atoms in the molecule, and its salts, which is an amine ether type surfactant (B2). The stability of the treatment agent can be improved by the amine ether type surfactant (B1). Also, the stability of the treatment agent can be improved by the amine ether type surfactant (B2).

[0071] (Hydrocarbon group) The hydrocarbon groups constituting the amine ether type surfactant (B1) and the amine ether type surfactant (B2) may each be a saturated hydrocarbon group or an unsaturated hydrocarbon group. Also, they may be a linear hydrocarbon group or a hydrocarbon group having a branched chain.

[0072] As the unsaturated hydrocarbon group, it may be an alkenyl group having one double bond as an unsaturated carbon bond, or an alkadienyl group, an alkatrienyl group, etc. having two or more double bonds. Also, it may be an alkynyl group having one triple bond as an unsaturated carbon bond, or an alkadiynyl group, etc. having two or more triple bonds.

[0073] The hydrocarbon group constituting the amine ether type surfactant (B1) has 8 to 13 carbon atoms. The hydrocarbon group constituting the amine ether type surfactant (B2) has 14 to 18 carbon atoms.

[0074] In addition, the average number of carbon atoms of the hydrocarbon group of the amine ether type surfactant (B1) and the amine ether type surfactant (B2) is preferably 10 or more and 15 or less. By defining it within such a range, the stability of the treatment agent can be particularly improved. First, the number of carbon atoms of the hydrocarbon group in each component of the amine ether type surfactant (B1) and the amine ether type surfactant (B2) is calculated to obtain the average number of carbon atoms of the hydrocarbon group. The average number of carbon atoms of the hydrocarbon group is determined as the average value of the number of carbon atoms of the hydrocarbon group based on the mass ratio occupied by each component in all components of the amine ether type surfactant (B1) and the amine ether type surfactant (B2).

[0075] Examples of the hydrocarbon group constituting the amine ether type surfactant (B1) include the following. Specific examples of the linear saturated hydrocarbon group include, for example, octyl group, nonyl group, decyl group, undecyl group, dodecyl group, tridecyl group, and the like.

[0076] Specific examples of the saturated hydrocarbon group having a branched chain include, for example, isooctyl group, isononyl group, isodecyl group, isoundecyl group, isododecyl group, isotridecyl group, and the like.

[0077] Specific examples of the linear unsaturated hydrocarbon group having one double bond in the hydrocarbon group include, for example, octenyl group, nonenyl group, decenyl group, undecenyl group, dodecenyl group, tridecenyl group, and the like.

[0078] Specific examples of the unsaturated hydrocarbon group having a branched chain structure and having one double bond in the hydrocarbon group include, for example, isooctenyl group, isononenyl group, isodecenyl group, isoundecenyl group, isododecenyl group, isotridecenyl group, and the like.

[0079] Examples of the hydrocarbon group constituting the amine ether type surfactant (B2) include the following. Specific examples of the linear saturated hydrocarbon group include, for example, tetradecyl group, pentadecyl group, hexadecyl group, heptadecyl group, octadecyl group and the like.

[0080] Specific examples of the saturated hydrocarbon group having a branched chain include, for example, isotetradecyl group, isopentadecyl group, isohexadecyl group, isoheptadecyl group, isooctadecyl group and the like.

[0081] Specific examples of the linear unsaturated hydrocarbon group having one double bond in the hydrocarbon group include, for example, tetradecenyl group, pentadecenyl group, hexadecenyl group, heptadecenyl group, octadecenyl group and the like.

[0082] Specific examples of the unsaturated hydrocarbon group having a branched chain structure and having one double bond in the hydrocarbon group include, for example, isotetradecenyl group, isopentadecenyl group, isohexadecenyl group, isoheptadecenyl group, isooctadecenyl group and the like.

[0083] ((Poly)alkylene oxide chain) In the amine ether type surfactant (B1) and the amine ether type surfactant (B2), a polyalkylene oxide chain is formed by adding 2 mol or more and 100 mol or less of an alkylene oxide having 2 to 3 carbon atoms. Specific examples of the alkylene oxide include ethylene oxide and propylene oxide. The number of moles of the added alkylene oxide is 2 mol or more and 100 mol or less, preferably 3 mol or more and 50 mol or less. A range in which the above upper and lower limits are arbitrarily combined is also assumed. The number of moles of the added alkylene oxide indicates the number of moles of the alkylene oxide with respect to 1 mol of the compound to be added in the charged raw materials. The alkylene oxide may be used alone as one kind of alkylene oxide, or two kinds of alkylene oxides may be used in appropriate combination. When two kinds of alkylene oxides are applied, their addition forms may be any of block addition, random addition, and a combination of block addition and random addition, and there is no particular limitation.

[0084] It is preferable that the proportion of ethylene oxide in the alkylene oxide in the amine ether type surfactant (B1) and the amine ether type surfactant (B2) is 80 mol% or more and 100 mol% or less. By defining it within such a range, the stability of the treatment agent can be particularly improved. The proportion of such ethylene oxide is first calculated as the proportion (mol%) of ethylene oxide in the alkylene oxide in each component of the amine ether type surfactant (B1) and the amine ether type surfactant (B2). The proportion of ethylene oxide is determined as the average value of the proportion (mol%) of ethylene oxide based on the mass ratio occupied by each component in all components of the amine ether type surfactant (B1) and the amine ether type surfactant (B2).

[0085] (Specific examples) Specific examples of the amine ether type surfactant (B1) include, for example, those obtained by adding alkylene oxide to octylamine, those obtained by adding alkylene oxide to decylamine, those obtained by adding alkylene oxide to laurylamine, and their salts.

[0086] The amine ether type surfactant (B1) may be used alone or in an appropriate combination of two or more. Specific examples of the amine ether type surfactant (B2) include, for example, those obtained by adding alkylene oxide to myristylamine, those obtained by adding alkylene oxide to cetylamine, those obtained by adding alkylene oxide to stearylamine, those obtained by adding alkylene oxide to oleylamine, and their salts.

[0087] The amine ether type surfactant (B2) may be used alone or in an appropriate combination of two or more. (Blending amount) In the treatment agent, the lower limit of the content ratio of the amine ether type surfactant (B1) is appropriately set, but is preferably 0.1% by mass or more, more preferably 0.15% by mass or more. When such a content ratio is 0.1% by mass or more, the stability of the treatment agent can be particularly improved. The upper limit of the content ratio of such an amine ether type surfactant (B1) is appropriately set, but is preferably 50% by mass or less, more preferably 45% by mass or less. When such a content ratio is 50% by mass or less, the stability of the treatment agent can be particularly improved. In addition, a range in which the above upper and lower limits are arbitrarily combined is also assumed.

[0088] In the treatment agent, the lower limit of the content ratio of the amine ether type surfactant (B2) is appropriately set, but is preferably 0.1% by mass or more, more preferably 0.15% by mass or more. When such a content ratio is 0.1% by mass or more, the stability of the treatment agent can be particularly improved. The upper limit of the content ratio of such an amine ether type surfactant (B2) is appropriately set, but is preferably 20% by mass or less, more preferably 17% by mass or less. When such a content ratio is 20% by mass or less, the stability of the treatment agent can be particularly improved. In addition, a range in which the above upper and lower limits are arbitrarily combined is also assumed.

[0089] When the total content ratio of the organic phosphate ester compound (A), the amine ether type surfactant (B), and the smoothing agent (C) is 100 parts by mass, the total content ratio of the amine ether type surfactant (B1) and the amine ether type surfactant (B2), that is, the lower limit of the content ratio of the amine ether type surfactant (B) is appropriately set, but is preferably 3 parts by mass or more, more preferably 5 parts by mass or more. When such a content ratio is 3 parts by mass or more, the stability of the treatment agent can be particularly improved. The upper limit of the content ratio of such an amine ether type surfactant (B) is appropriately set, but is preferably 50 parts by mass or less, more preferably 40 parts by mass or less. When such a content ratio is 50 parts by mass or less, the stability of the treatment agent can be particularly improved. In addition, a range in which the above upper and lower limits are arbitrarily combined is also assumed.

[0090] (Other ether type surfactant (B3)) Within the range that does not inhibit the effects of the present invention, the treating agent of the present embodiment may further contain another ether-type surfactant (B3) other than the above-described amine-ether type surfactant (B).

[0091] Examples of the other ether-type surfactant (B3) include compounds having a (poly)oxyalkylene structure obtained by adding an alkylene oxide to alcohols or carboxylic acids, ether-ester compounds having a (poly)oxyalkylene structure obtained by adding an alkylene oxide to an ester compound of carboxylic acids and polyhydric alcohols, compounds having a (poly)oxyalkylene structure obtained by adding an alkylene oxide to, for example, primary organic amines as amine compounds other than the above, compounds having a (poly)oxyalkylene structure obtained by adding an alkylene oxide to fatty acid amides, and compounds having a polyoxyalkylene structure such as block copolymers having a polyoxyethylene chain and a polyoxypropylene chain.

[0092] Specific examples of the alcohols used as raw materials for other ether-type surfactants (B3) include, for example, (1) linear alkyl alcohols such as methanol, ethanol, propanol, butanol, pentanol, hexanol, octanol, nonanol, decanol, undecanol, dodecanol, tridecanol, tetradecanol, pentadecanol, hexadecanol, heptadecanol, octadecanol, nonadecanol, eicosanol, heneicosanol, docosanol, tricosanol, tetracosanol, pentacosanol, hexacosanol, heptacosanol, octacosanol, nonacosanol, triacontanol, etc., (2) branched alkyl alcohols such as isopropanol, isobutanol, isohexanol, 2-ethylhexanol, isononanol, isodecanol, isododecanol, isotridecanol, isotetradecanol, isotriacontanol, isohexadecanol, isoheptadecanol, isooctadecanol, isononadecanol, isoeicosanol, isoheneicosanol, isodocosanol, isotricosanol, isotetracosanol, isopentacosanol, isohexacosanol, isoheptacosanol, isooctacosanol, isononacosanol, isopentadecanol, etc., (3) linear alkenyl alcohols such as tetradecenol, hexadecenol, heptadecenol, octadecenol, nonadecenol, etc., (4) branched alkenyl alcohols such as isohexadecenol, isooctadecenol, etc., (5) cyclic alkyl alcohols such as cyclopentanol, cyclohexanol, etc., (6) aromatic alcohols such as phenol, nonylphenol, benzyl alcohol, monostyrenated phenol, distyrenated phenol, tristyrenated phenol, etc.

[0093] Specific examples of the carboxylic acids used as raw materials for other ether-type surfactants (B3) include, for example, (1) linear alkyl carboxylic acids such as octanoic acid, nonanoic acid, decanoic acid, undecanoic acid, dodecanoic acid, tridecanoic acid, tetradecanoic acid, pentadecanoic acid, hexadecanoic acid, heptadecanoic acid, octadecanoic acid, nonadecanoic acid, eicosanoic acid, heneicosanoic acid, docosanoic acid, etc., (2) branched alkyl carboxylic acids such as 2-ethylhexanoic acid, isododecanoic acid, isotridecanoic acid, isotetradecanoic acid, isohexadecanoic acid, isooctadecanoic acid, etc., (3) linear alkenyl carboxylic acids such as octadecenoic acid, octadecadienoic acid, octadecatrienoic acid, etc., (4) aromatic carboxylic acids such as benzoic acid, etc., (5) hydroxycarboxylic acids such as ricinoleic acid, etc.

[0094] As the alkylene oxide used as a raw material for forming the (poly)oxyalkylene structure of other ether-type surfactants (B3), an alkylene oxide having 2 to 4 carbon atoms is preferable. Specific examples of the alkylene oxide include, for example, ethylene oxide, propylene oxide, butylene oxide, etc. The added molar number of the alkylene oxide is appropriately set, but is preferably 0.1 mol or more and 250 mol or less, more preferably 1 mol or more and 200 mol or less, still more preferably 2 mol or more and 150 mol or less. A range obtained by arbitrarily combining the above upper and lower limits is also assumed. The added molar number of the alkylene oxide indicates the molar number of the alkylene oxide with respect to 1 mol of the addition target compound in the charged raw materials. The alkylene oxide may be used alone as one kind of alkylene oxide, or two or more kinds of alkylene oxides may be used in appropriate combination. When two or more kinds of alkylene oxides are applied, their addition forms may be any of block addition, random addition, and a combination of block addition and random addition, and there is no particular limitation.

[0095] Specific examples of the polyhydric alcohols used as raw materials for other ether-type surfactants (B3) include, for example, ethylene glycol, propylene glycol, 1,3-propanediol, 1,2-butanediol, 1,3-butanediol, 1,4-butanediol, 2-methyl-1,2-propanediol, 1,5-pentanediol, 1,6-hexanediol, 2,5-hexanediol, 2-methyl-2,4-pentanediol, 2,3-dimethyl-2,3-butanediol, glycerin, 2-methyl-2-hydroxymethyl-1,3-propanediol, trimethylolpropane, sorbitan, pentaerythritol, sorbitol, and the like.

[0096] Specific examples of the aliphatic amines used as raw materials for other ether-type surfactants (B3) include, for example, methylamine, ethylamine, butylamine, octylamine, laurylamine, octadecylamine, octadecenylamine, coconut amine, and the like.

[0097] Specific examples of the fatty acid amides used as raw materials for other ether-type surfactants (B3) include, for example, octylamide, lauric amide, palmitic amide, stearic amide, oleic amide, behenic amide, lignoceric amide, and the like.

[0098] The block copolymer having a polyoxyethylene chain and a polyoxypropylene chain has a polyoxypropylene chain with low hydrophilicity and a polyoxyethylene chain with high hydrophilicity, and is not particularly limited as long as it has a surfactant action. The number of polyoxyethylene chains and polyoxypropylene chains in the molecule is not particularly limited. For example, it may be a block copolymer composed of one polyoxypropylene chain and one polyoxyethylene chain, or it may be a poloxamer-based surfactant composed of a polyoxypropylene chain and two polyoxyethylene chains sandwiching it. Further, it may be an ether compound obtained by adding a polyoxyethylene chain and a polyoxypropylene chain to a polyhydric alcohol. The number of moles of ethylene oxide added to form the polyoxyethylene chain is not particularly limited, and examples thereof include 5 moles or more and 200 moles or less. The number of moles of propylene oxide added to form the polyoxypropylene chain is not particularly limited, and examples thereof include 5 moles or more and 100 moles or less.

[0099] Specific examples of the other ether-type surfactants (B3) include, for example, those obtained by adding an alkylene oxide to lauryl alcohol, those obtained by adding an alkylene oxide to C12-C13 alcohol, those obtained by adding an alkylene oxide to C12-C14 alcohol, those obtained by adding an alkylene oxide to isotridecyl alcohol, those obtained by adding an alkylene oxide to coconut fatty acid, those obtained by adding an alkylene oxide to oleic acid, those obtained by adding an alkylene oxide to oleyl alcohol, those obtained by adding an alkylene oxide to lauric acid, those obtained by adding an alkylene oxide to nonylphenol, and the like.

[0100] These other ether-type surfactants (B3) may be used alone or in appropriate combination of two or more. The upper limit of the content of the other ether-type surfactant (B3) in the treatment agent is, for example, 20% by mass, 15% by mass, or 10% by mass.

[0101] (Smoothing agent (C)) As the smoothing agent (C) used in the treatment agent of this embodiment, at least one selected from polyorganosiloxane (C1), hydrocarbon (C2), fatty acid ester (C3), and fatty acid (C4) can be mentioned.

[0102] Specific examples of the polyorganosiloxane (C1) are not particularly limited. For example, dimethyl silicone, phenyl-modified silicone, amino-modified silicone, amide-modified silicone, polyether-modified silicone, aminopolyether-modified silicone, alkyl-modified silicone, alkylaralkyl-modified silicone, alkylpolyether-modified silicone, ester-modified silicone, epoxy-modified silicone, carbinol-modified silicone, mercapto-modified silicone, polyoxyalkylene-modified silicone, etc. can be mentioned.

[0103] The hydrocarbon (C2) is not particularly limited. For example, aromatic hydrocarbons, paraffinic hydrocarbons, naphthenic hydrocarbons, etc. can be mentioned. More specifically, for example, mineral oil, spindle oil, liquid paraffin, paraffin wax, etc. can be mentioned. These commercially available products can be appropriately adopted.

[0104] The fatty acid ester (C3) is not particularly limited. For example, ester oils produced from fatty acids and alcohols can be mentioned. Examples of the ester oils include ester oils produced from fatty acids having odd or even hydrocarbon groups and alcohols, which will be described later.

[0105] The fatty acid that is the raw material of the ester oil is not particularly limited with respect to its carbon number, presence or absence of branching, valence, etc. Also, for example, it may be a higher fatty acid, a fatty acid having a cyclo ring, or a fatty acid having an aromatic ring. The alcohol that is the raw material of the ester oil is not particularly limited with respect to its carbon number, presence or absence of branching, valence, etc. Also, for example, it may be a higher alcohol, an alcohol having a cyclo ring, or an alcohol having an aromatic ring.

[0106] Specific examples of the ester oil include, for example, (1) ester compounds of aliphatic monoalcohols and aliphatic monocarboxylic acids such as methyl oleate, octyl palmitate, octyl stearate, stearyl stearate, stearyl palmitate, behenyl behenate, oleyl laurate, oleyl oleate, isotridecyl stearate, isotetracosyl oleate, etc., (2) ester compounds of aliphatic polyhydric alcohols and aliphatic monocarboxylic acids such as sorbitan monooleate, polyethylene glycol monolaurate, 1,6 - hexanediol didecanoate, glycerin trioleate, trimethylolpropane trilaurate, pentaerythritol tetraoctanoate, etc., (3) complete ester compounds of aliphatic monoalcohols and aliphatic polycarboxylic acids such as dioleyl azelate, dioleyl thiodipropionate, diisocetyl thiodipropionate, diisostearyl thiodipropionate, etc., (4) ester compounds of aromatic monoalcohols and aliphatic monocarboxylic acids such as benzyl oleate, benzyl laurate, etc., (5) complete ester compounds of aromatic polyhydric alcohols and aliphatic monocarboxylic acids such as bisphenol A dilaurate, etc., (6) complete ester compounds of aliphatic monoalcohols and aromatic polycarboxylic acids such as bis(2 - ethylhexyl) phthalate, diisostearyl isophthalate, trioctyl trimellitate, etc., (7) natural oils and fats such as coconut oil, rapeseed oil, sunflower oil, soybean oil, castor oil, sesame oil, fish oil, and beef tallow, etc.

[0107] As the fatty acid (C4), known ones can be appropriately adopted, and it may be a saturated fatty acid or an unsaturated fatty acid. Also, it may be linear or have a branched - chain structure. Further, the number of carbon atoms of the fatty acid (C4) is not particularly limited, but a monohydric higher fatty acid having 6 or more carbon atoms is preferred.

[0108] Specific examples of saturated fatty acids include, for example, hexanoic acid (caproic acid), octylic acid (2-ethylhexanoic acid), octanoic acid (caprylic acid), nonanoic acid, decanoic acid (capric acid), dodecanoic acid (lauric acid), tetradecanoic acid (myristic acid), hexadecanoic acid (palmitic acid), octadecanoic acid (stearic acid), eicosanoic acid (arachidic acid), docosanoic acid (behenic acid), tetracosanoic acid, and the like.

[0109] Specific examples of unsaturated fatty acids include, for example, myristoleic acid, palmitoleic acid, oleic acid, vaccenic acid, eicosenoic acid, linoleic acid, α-linolenic acid, γ-linolenic acid, arachidonic acid, and the like.

[0110] These smoothing agents (C) may be used alone or in appropriate combination of two or more. In the treatment agent, the lower limit of the content ratio of the smoothing agent (C) is appropriately set, but is preferably 0.05% by mass or more, more preferably 0.1% by mass or more. When such a content ratio is 0.05% by mass or more, the smoothness of the treatment agent can be particularly improved. The upper limit of the content ratio of such a smoothing agent (C) is appropriately set, but is preferably 25% by mass or less, more preferably 15% by mass or less, still more preferably 10% by mass or less. When such a content ratio is 25% by mass or less, the stability of the treatment agent can be particularly improved. In addition, the range of arbitrarily combining the above upper and lower limits is also assumed.

[0111] In the treatment agent, when the total content ratio of the organic phosphate ester compound (A), the amine ether type surfactant (B), and the smoothing agent (C) is 100 parts by mass, the organic phosphate ester compound (A) is 50 parts by mass or more and 90 parts by mass or less, the amine ether type surfactant (B) is 5 parts by mass or more and 40 parts by mass or less, and the smoothing agent (C) is preferably contained in a ratio of 0.1 part by mass or more and 10 parts by mass or less. By defining it within such a range, the effects of the present invention can be further improved. In addition, the range of arbitrarily combining the above upper and lower limits is also assumed.

[0112] (Storage form) The treating agent may be configured as a single dosage form containing the above-described components (A) to (C), or from the viewpoint of improving formulation stability, it may be configured as a three-dosage form treating agent or a four-dosage form treating agent as shown below.

[0113] The three-dosage form treating agent is composed of a three-dosage form first treating agent for polyester synthetic fibers containing an organic phosphate ester compound (A1) and an amine-ether type surfactant (B) (hereinafter referred to as "three-dosage form first treating agent"), a three-dosage form second treating agent for polyester synthetic fibers containing an organic phosphate ester compound (A2) (hereinafter referred to as "three-dosage form second treating agent"), and a three-dosage form third treating agent for polyester synthetic fibers containing a smoothing agent (C) (hereinafter referred to as "three-dosage form third treating agent"), and is configured as a set.

[0114] The three-dosage form treating agent is composed of a three-dosage form first treating agent, a three-dosage form second treating agent, and a three-dosage form third treating agent during storage or distribution. When in use, a mixture in which the three-dosage form first treating agent, the three-dosage form second treating agent, and the three-dosage form third treating agent are mixed is prepared.

[0115] The four-dosage form treating agent is composed of a four-dosage form first treating agent for polyester synthetic fibers containing an organic phosphate ester compound (A1) (hereinafter referred to as "four-dosage form first treating agent"), a four-dosage form second treating agent for polyester synthetic fibers containing an organic phosphate ester compound (A2) (hereinafter referred to as "four-dosage form second treating agent"), a four-dosage form third treating agent for polyester synthetic fibers containing an amine-ether type surfactant (B) (hereinafter referred to as "four-dosage form third treating agent"), and a four-dosage form fourth treating agent for polyester synthetic fibers containing a smoothing agent (C) (hereinafter referred to as "four-dosage form fourth treating agent"), and is configured as a set.

[0116] The four-dosage form treating agent is composed of a four-dosage form first treating agent, a four-dosage form second treating agent, a four-dosage form third treating agent, and a four-dosage form fourth treating agent, which are configured as separate agents during storage or distribution. When in use, a mixture in which the four-dosage form first treating agent, the four-dosage form second treating agent, the four-dosage form third treating agent, and the four-dosage form fourth treating agent are mixed is prepared.

[0117] (Solvent) The treatment agent of this embodiment may be mixed with a solvent as necessary to prepare a treatment agent-containing composition for polyester synthetic fibers (hereinafter referred to as "treatment agent-containing composition") or a diluted solution of the treatment agent for polyester synthetic fibers (hereinafter referred to as "diluted solution").

[0118] The solvent is a solvent having a boiling point of 105 °C or lower at atmospheric pressure. Examples of the solvent include water and organic solvents. Specific examples of the organic solvent include lower alcohols such as ethanol and propanol, and low-polarity solvents such as hexane. These solvents may be used alone or in appropriate combination of two or more. Among these, polar solvents such as water and lower alcohols are preferred from the viewpoint of excellent dispersibility or solubility of each component, and water is more preferred from the viewpoint of excellent handling properties.

[0119] In the treatment agent-containing composition, when the total content ratio of the treatment agent and the solvent is 100% by mass, for example, the treatment agent is prepared in an amount exceeding 10% by mass. In the diluted solution, when the total content ratio of the treatment agent and the solvent is 100% by mass, for example, the treatment agent is contained in an amount of 0.1% by mass or more and 10% by mass or less.

[0120] (Effects of this embodiment) The effects of the treatment agent of the first embodiment will be described. (1-1) In the treatment agent of the first embodiment described above, it is configured to contain the above-described organic phosphate compound (A), amine ether type surfactant (B), and smoothing agent (C). Therefore, the stability of the treatment agent, particularly the emulsion stability when the treatment agent is made into an aqueous diluted solution, can be improved. Thereby, the generation of precipitates and / or precipitations from the emulsion can be reduced. And since the treatment agent can adhere to the fibers uniformly, the quality unevenness of the fibers due to uneven adhesion can be reduced.

[0121] In addition, the adhesion of the fiber surface to which the treatment agent is applied can be reduced. Thereby, the manufacturing characteristics and the quality of the obtained fibers can be improved. In addition, the smoothness and antistatic properties of the fiber to which the treatment agent is applied can be improved. Thereby, the manufacturing characteristics and the quality of the resulting fiber can be improved.

[0122] <Second Embodiment> Next, a second embodiment in which the three-component type first treatment agent of the present invention is embodied will be described. Hereinafter, the description will focus on the differences from the above embodiment.

[0123] The three-component type first treatment agent of the present embodiment contains the above-described organic phosphate ester compound (A1) and amine ether type surfactant (B). The three-component type first treatment agent is used in combination with the three-component type second treatment agent containing the above-described organic phosphate ester compound (A2) and the three-component type third treatment agent containing the above-described smoothing agent (C) at the time of use.

[0124] The organic phosphate ester compound (A1), the organic phosphate ester compound (A2), the amine ether type surfactant (B), and the smoothing agent (C) are the same as the respective components described in the first embodiment.

[0125] (Solvent) The three-component type first treatment agent of the present embodiment may be mixed with a solvent as necessary to prepare a three-component type first treatment agent-containing composition for polyester synthetic fibers (hereinafter referred to as "three-component type first treatment agent-containing composition"), and may be stored or distributed in the form of the three-component type first treatment agent-containing composition. As the solvent, those exemplified in the first embodiment can be adopted.

[0126] (Effects of the Present Embodiment) The effects of the three-component type first treatment agent of the second embodiment will be described. In the second embodiment, in addition to the effects of the above embodiment, it has the following effects.

[0127] (2-1) In the three-component first treatment agent of the second embodiment, it contains an organic phosphate compound (A1) and an amine ether type surfactant (B), and is used in combination with a three-component second treatment agent containing an organic phosphate compound (A2) and a three-component third treatment agent containing a smoothing agent (C) during use. Therefore, the formulation stability, particularly the storage stability, of the three-component first treatment agent can be improved. Also, by adjusting the mixing ratio with the three-component second and third treatment agents, the components of the resulting treatment agent can be adjusted. Further, the three-component first treatment agent alone can be distributed as a separate agent from the three-component second and third treatment agents.

[0128] <Third Embodiment> Next, a third embodiment in which the three-component second treatment agent of the present invention is embodied will be described. Hereinafter, the description will focus on the differences from the above embodiments.

[0129] The three-component second treatment agent of this embodiment contains the above-described organic phosphate compound (A2). The three-component second treatment agent is used in combination with the three-component first treatment agent containing the above-described organic phosphate compound (A1) and the amine ether type surfactant (B) and the three-component third treatment agent containing the above-described smoothing agent (C) during use.

[0130] The organic phosphate compound (A1), the organic phosphate compound (A2), the amine ether type surfactant (B), and the smoothing agent (C) are the same as the respective components described in the first embodiment.

[0131] (Solvent) The three-component second treatment agent of this embodiment can be mixed with a solvent as needed to prepare a three-component second treatment agent-containing composition for polyester synthetic fibers (hereinafter referred to as "three-component second treatment agent-containing composition"), and can be stored or distributed in the form of the three-component second treatment agent-containing composition. The solvent that can be adopted is the one exemplified in the first embodiment.

[0132] (Effects of this embodiment) The effects of the three-component second treatment agent of the third embodiment will be described. In the third embodiment, in addition to the effects of the above embodiments, it has the following effects.

[0133] (3-1) In the three-component type second treatment agent of the third embodiment, it contains an organic phosphate compound (A2), and is used in combination with the three-component type first treatment agent containing the organic phosphate compound (A1) and the amine-ether type surfactant (B) and the three-component type third treatment agent containing a smoothing agent (C) at the time of use. Therefore, the formulation stability, particularly the storage stability, of the three-component type second treatment agent can be improved. Also, by adjusting the mixing ratio with the three-component type first and third treatment agents, the components of the obtained treatment agent can be adjusted. Further, the three-component type second treatment agent alone can be distributed as a separate agent from the three-component type first and third treatment agents.

[0134] <Fourth Embodiment> Next, a fourth embodiment in which the three-component type third treatment agent of the present invention is embodied will be described. Hereinafter, the description will focus on the differences from the above embodiments.

[0135] The three-component type third treatment agent of this embodiment contains the above-described smoothing agent (C). The three-component type third treatment agent is used in combination with the three-component type first treatment agent containing the above-described organic phosphate compound (A1) and the amine-ether type surfactant (B) and the three-component type second treatment agent containing the above-described organic phosphate compound (A2) at the time of use.

[0136] The organic phosphate compound (A1), the organic phosphate compound (A2), the amine-ether type surfactant (B), and the smoothing agent (C) are the same as the respective components described in the first embodiment.

[0137] (Solvent) The three-component type third treatment agent of this embodiment is prepared into a three-component type third treatment agent-containing composition (hereinafter referred to as "three-component type third treatment agent-containing composition") by mixing with a solvent as necessary, and may be stored or distributed in the form of the three-component type third treatment agent-containing composition. As the solvent, those exemplified in the first embodiment can be adopted.

[0138] (Effects of this embodiment) The effects of the three-agent type third treatment agent of the fourth embodiment will be described. In the fourth embodiment, in addition to the effects of the above-described embodiments, it has the following effects.

[0139] (4-1) The three-agent type third treatment agent of the fourth embodiment contains a smoothing agent (C), and is used in combination with a three-agent type first treatment agent containing an organophosphate ester compound (A1) and an amine ether type surfactant (B) at the time of use, and a three-agent type second treatment agent containing an organophosphate ester compound (A2). Therefore, the formulation stability, particularly the storage stability, of the three-agent type third treatment agent can be improved. Further, by adjusting the mixing ratio with the three-agent type first and second treatment agents, the components of the obtained treatment agent can be adjusted. In addition, the three-agent type third treatment agent alone can be distributed as a separate agent from the three-agent type first and second treatment agents.

[0140] <Fifth Embodiment> Next, a fifth embodiment in which the four-agent type first treatment agent of the present invention is embodied will be described. Hereinafter, the description will focus on the differences from the above-described embodiments.

[0141] The four-agent type first treatment agent of the present embodiment contains the above-described organophosphate ester compound (A1). The four-agent type first treatment agent is used in combination with a four-agent type second treatment agent containing the above-described organophosphate ester compound (A2) at the time of use, a four-agent type third treatment agent containing the above-described amine ether type surfactant (B), and a four-agent type fourth treatment agent containing the above-described smoothing agent (C).

[0142] The organophosphate ester compound (A1), the organophosphate ester compound (A2), the amine ether type surfactant (B), and the smoothing agent (C) are the same as the respective components described in the first embodiment.

[0143] (Solvent) The four-agent type first treatment agent of the present embodiment may be mixed with a solvent as necessary to prepare a four-agent type first treatment agent-containing composition for polyester synthetic fibers (hereinafter referred to as "four-agent type first treatment agent-containing composition"), and may be stored or distributed in the form of the four-agent type first treatment agent-containing composition. As the solvent, those exemplified in the first embodiment can be adopted.

[0144] (Effect of this embodiment) The effect of the four-agent type first treatment agent of the fifth embodiment will be described. In the fifth embodiment, in addition to the effects of the above embodiments, it has the following effects.

[0145] (5-1) In the four-agent type first treatment agent of the fifth embodiment, it contains an organophosphoric acid ester compound (A1), and is used in combination with a four-agent type second treatment agent containing an organophosphoric acid ester compound (A2) during use, a four-agent type third treatment agent containing an amine ether type surfactant (B), and a four-agent type fourth treatment agent containing a smoothing agent (C). Therefore, the formulation stability, particularly the storage stability, of the four-agent type first treatment agent can be improved. Also, by adjusting the mixing ratio with the four-agent type second to fourth treatment agents, the components of the obtained treatment agent can be adjusted. Further, only the four-agent type first treatment agent can be distributed as a separate agent from the four-agent type second to fourth treatment agents.

[0146] <Sixth Embodiment> Next, a sixth embodiment in which the four-agent type second treatment agent of the present invention is embodied will be described. Hereinafter, the description will focus on the differences from the above embodiments.

[0147] The four-agent type second treatment agent of this embodiment contains the above-described organophosphoric acid ester compound (A2). The four-agent type second treatment agent is used in combination with a four-agent type first treatment agent containing the above-described organophosphoric acid ester compound (A1) during use, a four-agent type third treatment agent containing the above-described amine ether type surfactant (B), and a four-agent type fourth treatment agent containing the above-described smoothing agent (C).

[0148] The organophosphoric acid ester compound (A1), the organophosphoric acid ester compound (A2), the amine ether type surfactant (B), and the smoothing agent (C) are the same as the respective components described in the first embodiment.

[0149] (Solvent) The four-component type second treatment agent of the present embodiment can be mixed with a solvent as needed to prepare a four-component type second treatment agent-containing composition for polyester synthetic fibers (hereinafter referred to as "four-component type second treatment agent-containing composition"), and it may be stored or distributed in the form of the four-component type second treatment agent-containing composition. As the solvent, those exemplified in the first embodiment can be adopted.

[0150] (Effect of the present embodiment) The effect of the four-component type second treatment agent of the sixth embodiment will be described. In the sixth embodiment, in addition to the effects of the above-described embodiments, it has the following effects.

[0151] (6-1) The four-component type second treatment agent of the sixth embodiment contains an organic phosphate ester compound (A2), and is used in combination with the four-component type first treatment agent containing an organic phosphate ester compound (A1) during use, the four-component type third treatment agent containing an amine ether type surfactant (B), and the four-component type fourth treatment agent containing a smoothing agent (C). Therefore, the formulation stability, particularly the storage stability, of the four-component type second treatment agent can be improved. Further, by adjusting the mixing ratio with the four-component type first, third, and fourth treatment agents, the components of the obtained treatment agent can be adjusted. Further, the four-component type second treatment agent alone can be distributed as a separate agent from the four-component type first, third, and fourth treatment agents.

[0152] <Seventh Embodiment> Next, a seventh embodiment in which the four-component type third treatment agent of the present invention is embodied will be described. Hereinafter, the description will focus on the differences from the above-described embodiments.

[0153] The four-component type third treatment agent of the present embodiment contains the above-described amine ether type surfactant (B). The four-component type third treatment agent is used in combination with the four-component type first treatment agent containing the above-described organic phosphate ester compound (A1), the four-component type second treatment agent containing the above-described organic phosphate ester compound (A2), and the four-component type fourth treatment agent containing the above-described smoothing agent (C) during use.

[0154] The organic phosphate compound (A1), the organic phosphate compound (A2), the amine-ether type surfactant (B), and the smoothing agent (C) are the same as the respective components described in the first embodiment.

[0155] (Solvent) The four-agent type third treatment agent of this embodiment is mixed with a solvent as necessary to prepare a four-agent type third treatment agent-containing composition for polyester synthetic fibers (hereinafter referred to as the "four-agent type third treatment agent-containing composition"), and may be stored or distributed in the form of the four-agent type third treatment agent-containing composition. As the solvent, those exemplified in the first embodiment can be adopted.

[0156] (Effects of this embodiment) The effects of the four-agent type third treatment agent of the seventh embodiment will be described. In the seventh embodiment, in addition to the effects of the above embodiments, it has the following effects.

[0157] (7-1) The four-agent type third treatment agent of the seventh embodiment contains the amine-ether type surfactant (B), and is used in combination with the four-agent type first treatment agent containing the organic phosphate compound (A1), the four-agent type second treatment agent containing the organic phosphate compound (A2), and the four-agent type fourth treatment agent containing the smoothing agent (C) during use. Therefore, the formulation stability of the four-agent type third treatment agent, particularly the storage stability, can be improved. Also, by adjusting the mixing ratio with the four-agent type first, second, and fourth treatment agents, the components of the obtained treatment agent can be adjusted. Further, only the four-agent type third treatment agent can be distributed as a separate agent from the four-agent type first, second, and fourth treatment agents.

[0158] <Eighth Embodiment> Next, the eighth embodiment in which the four-agent type fourth treatment agent of the present invention is embodied will be described. Hereinafter, the description will focus on the differences from the above embodiments.

[0159] In the four-agent type fourth treatment agent of this embodiment, the above-described smoothing agent (C) is contained. The four-agent type fourth treatment agent is used in combination with the four-agent type first treatment agent containing the above-described organic phosphate ester compound (A1), the four-agent type second treatment agent containing the above-described organic phosphate ester compound (A2), and the four-agent type third treatment agent containing the above-described amine ether type surfactant (B) when in use.

[0160] The organic phosphate ester compound (A1), the organic phosphate ester compound (A2), the amine ether type surfactant (B), and the smoothing agent (C) are the same as the respective components described in the first embodiment.

[0161] (Solvent) The four-agent type fourth treatment agent of this embodiment can be mixed with a solvent as necessary to prepare a four-agent type fourth treatment agent-containing composition for polyester synthetic fibers (hereinafter referred to as "four-agent type fourth treatment agent-containing composition"), and it may be stored or distributed in the form of the four-agent type fourth treatment agent-containing composition. As the solvent, those exemplified in the first embodiment can be adopted.

[0162] (Effects of this embodiment) The effects of the four-agent type fourth treatment agent of the eighth embodiment will be described. In the eighth embodiment, in addition to the effects of the above-described embodiment, it has the following effects.

[0163] (8-1) In the four-agent type fourth treatment agent of the eighth embodiment, the smoothing agent (C) is contained, and it is used in combination with the four-agent type first treatment agent containing the organic phosphate ester compound (A1), the four-agent type second treatment agent containing the organic phosphate ester compound (A2), and the four-agent type third treatment agent containing the amine ether type surfactant (B) when in use. Therefore, the formulation stability, particularly the storage stability, of the four-agent type fourth treatment agent can be improved. Also, by adjusting the mixing ratio with the four-agent type first to third treatment agents, the components of the resulting treatment agent can be adjusted. Further, the four-agent type fourth treatment agent alone can be distributed as a separate agent from the four-agent type first to third treatment agents.

[0164] <Ninth Embodiment> Next, a ninth embodiment embodying the polyester-based synthetic fiber (hereinafter referred to as "synthetic fiber") of the present invention will be described. The synthetic fiber of this embodiment is a treated synthetic fiber with the treatment agent and the like of the first embodiment adhering to the surface. By adhering the treatment agent to the surface of the synthetic fiber, a synthetic fiber provided with various functions can be obtained.

[0165] In the case of a one-agent type treatment agent, the synthetic fiber of this embodiment is obtained by applying a diluent containing a solvent and the treatment agent of the first embodiment to the synthetic fiber. Examples of the method for preparing the diluent include a method of adding the treatment agent or the treatment agent-containing composition of the first embodiment to a solvent.

[0166] In the case of a three-agent type treatment agent, the treatment method of the synthetic fiber of this embodiment is characterized by applying a diluent of the treatment agent containing a solvent, the three-agent type first treatment agent of the second embodiment, the three-agent type second treatment agent of the third embodiment, and the three-agent type third treatment agent of the fourth embodiment to the synthetic fiber. The ratio of the content ratios of the three-agent type first treatment agent, the three-agent type second treatment agent, and the three-agent type third treatment agent is preferably three-agent type first treatment agent: three-agent type second treatment agent: three-agent type third treatment agent = (5 to 60) / (30 to 90) / (0.05 to 25) as the mass ratio of the non-volatile content. By being defined within such a range, the operability can be improved. The non-volatile content is determined from the mass of the completely dried product obtained by heat-treating the object at 105°C for 2 hours to sufficiently remove volatile substances (hereinafter the same).

[0167] In the case of a four-agent type treatment agent, the treatment method of the synthetic fiber of this embodiment is characterized by applying a diluent of the treatment agent containing a solvent, the four-agent type first treatment agent of the fifth embodiment, the four-agent type second treatment agent of the sixth embodiment, the four-agent type third treatment agent of the seventh embodiment, and the four-agent type fourth treatment agent of the eighth embodiment to the synthetic fiber. The ratio of the content ratios of the four-agent type first treatment agent, the four-agent type second treatment agent, the four-agent type third treatment agent, and the four-agent type fourth treatment agent is preferably four-agent type first treatment agent: four-agent type second treatment agent: four-agent type third treatment agent: four-agent type fourth treatment agent = (3 to 25) / (30 to 90) / (3 to 50) / (0.05 to 25) as the mass ratio of the non-volatile content. By being defined within such a range, the operability can be improved.

[0168] Examples of the solvent used for producing the diluent include those exemplified in the first embodiment. From the viewpoint of operability and the like, the concentration of the treatment agent in the diluent is preferably 0.1% by mass or more and 10% by mass or less.

[0169] The diluent obtained as described above is applied to synthetic fibers, for example, in at least one of the spinning process, drawing process, and finishing process of synthetic fibers. Examples of the synthetic fibers to which the diluent is applied include polyester-based synthetic fibers. Specific examples of the polyester-based synthetic fibers include, for example, polyethylene terephthalate (PET), polytrimethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polylactic acid, and composite fibers containing these polyester-based resins.

[0170] The use of the synthetic fibers is not particularly limited, and examples include those for spinning, for producing spun yarns, non-woven fabrics, stuffing cotton, and papermaking. The length of the fibers is also not particularly limited, and it can be applied to short fibers and long fibers. Note that short fibers generally correspond to those called staple, and do not include long fibers generally called filaments. Also, the length of the short fibers is not particularly limited as long as it corresponds to short fibers in the technical field, but is, for example, 100 mm or less, preferably 30 mm or more and 70 mm or less. Among these, the treatment agent of the present invention is preferably applied to polyester short fibers and polyester-based synthetic fibers for producing spun yarns.

[0171] There is no particular limitation on the ratio of the treatment agent to be adhered to the synthetic fibers, but the diluent is finally adhered to the synthetic fibers so that the non-volatile content is preferably 0.01% by mass or more and 10% by mass or less, more preferably 0.1% by mass or more and 3% by mass or less. With such a configuration, the effects of each component can be effectively exerted. Also, the method of adhering the diluent is not particularly limited, and known methods can be adopted depending on the type, form, use, etc. of the synthetic fibers, such as the roller oiling method, the guide oiling method using a metering pump, the dipping oiling method, and the spray oiling method. When the dipping oiling method is used, the dipping time is preferably 1 minute or more and 5 minutes or less.

[0172] The synthetic fiber to which the diluent is applied may be dried or heat-treated using a known method. By the drying or heat treatment, a solvent such as water is volatilized, and a fiber to which the components contained in the treatment agent adhere is obtained.

[0173] (Effect of this embodiment) The effect of the synthetic fiber of the ninth embodiment will be described. In the ninth embodiment, in addition to the effects of the above embodiments, it has the following effects.

[0174] (9-1) The synthetic fiber of the ninth embodiment has the treatment agent of the first embodiment or the like adhered thereto. Therefore, the adhesion on the surface of the synthetic fiber can be reduced, and the smoothness and antistatic property can be improved. Thereby, the manufacturing characteristics can be improved. Also, the quality of the obtained fiber can be improved.

[0175] (Modification example) Note that the above embodiment may be modified as follows. The above embodiment and the following modification examples can be implemented in combination with each other as long as they do not technically conflict with each other.

[0176] · In each treatment agent, each composition, or the diluent of the above embodiment, within a range that does not inhibit the effects of the present invention, for maintaining the quality of each treatment agent, each composition, or the diluent, as other components, other solvents, stabilizers, antistatic agents, coupling agents, antioxidants, ultraviolet absorbers, components used in ordinary treatment agents such as surfactants other than the above may be further blended. Note that other components used in ordinary treatment agents other than solvents are preferably 10% by mass or less in each treatment agent from the viewpoint of efficiently exerting the efficacy of the present invention. Also, the other components may be stored as separate agents from the above-described treatment agents.

Example

[0177] Hereinafter, in order to make the configuration and effects of the present invention more specific, examples and the like will be given, but the present invention is not limited to these examples. In the following examples and comparative examples, unless otherwise specified, "parts" means parts by mass, and "%" means mass%.

[0178] Test category 1 (preparation of a single-form treatment agent) (Example 1-1) As shown in Table 1, 5 parts (%) of octyl phosphate and its potassium salt (acid value 25 KOH-mg / g) (A1-3) and 84 parts (%) of stearyl phosphate and its potassium salt (acid value 12.5 KOH-mg / g) (A2-3) as the organic phosphate compound (A), 0.6 parts (%) of the phosphate (B1-1) of the addition product of 10 moles of ethylene oxide (hereinafter referred to as EO) to 1 mole of octylamine, 0.6 parts (%) of the phosphate (B1-2) of the addition product of 10 moles of EO to 1 mole of decylamine, 5 parts (%) of the phosphate (B1-3) of the addition product of 10 moles of EO to 1 mole of laurylamine, 2 parts (%) of the phosphate (B2-1) of the addition product of 10 moles of EO to 1 mole of myristylamine, 0.9 parts (%) of the phosphate (B2-2) of the addition product of 10 moles of EO to 1 mole of cetylamine, 0.7 parts (%) of the phosphate (B2-3) of the addition product of 10 moles of EO to 1 mole of stearylamine, and 0.2 parts (%) of the phosphate (B2-5) of the addition product of 10 moles of EO to 1 mole of oleylamine as the amine-ether type surfactant (B), and linear polydimethylsiloxane (kinematic viscosity at 25 °C 1×10 -5 m 2 / s) (C1-1) 0.5 parts (%), mineral oil (kinematic viscosity at 25 °C 5×10 -6 m 2 / s) (C2-1) 0.2 parts (%), methyl oleate (C3-1) 0.2 parts (%), and oleic acid (C4-1) 0.1 parts (%) were mixed to prepare the treatment agent of Example 1-1.

[0179] (Examples 1-2 to 1-31, Comparative Examples 1 to 10) The treatment agents of Examples 1-2 to 1-31 and Comparative Examples 1 to 10 were prepared in the same manner as the treatment agent of Example 1-1, containing the organic phosphate compound (A), the amine-ether type surfactant (B), the other ether type surfactant (B3), and the smoothing agent (C) in the proportions shown in Tables 1 and 2.

[0180] The type and content of the organophosphoric acid ester compound (A), the type and content of the amine ether type surfactant (B), the type and content of the other ether type surfactant (B3), and the type and content of the smoothing agent (C) are shown in the columns of "Organophosphoric Acid Ester Compound (A)", "Amine Ether Type Surfactant (B)", "Other Ether Type Surfactant (B3)", and "Smoothing Agent (C)" in Tables 1 and 2, respectively.

[0181] [Table 1]

[0182] [Table 2] Details of the organophosphoric acid ester compound (A), the ether type surfactant, and the smoothing agent (C) described in Tables 1 and 2 are as follows.

[0183] <Organophosphoric Acid Ester Compound (A)> As the organophosphoric acid ester compound (A), the following organophosphoric acid ester compounds (A1) and (A2) were used. The acid value of each organophosphoric acid ester compound was measured by the method described in the column of "Organophosphoric Acid Ester Compound (A)".

[0184] (Organophosphoric Acid Ester Compound (A1)) A1-1: Butyl phosphate and its potassium salt (acid value 25 KOH-mg / g) A1-2: Hexyl phosphate and its potassium salt (acid value 35 KOH-mg / g) A1-3: Octyl phosphate and its potassium salt (acid value 25 KOH-mg / g) A1-4: Undecyl phosphate and its potassium salt (acid value 50 KOH-mg / g) A1-5: Isoundecyl phosphate and its potassium salt (acid value 50 KOH-mg / g) Phosphate ester of 2 moles of EO added to 1 mole of octyl alcohol, and its potassium salt (acid value 10 KOH-mg / g) (Organic phosphate ester compound (A2)) A2-1: Lauryl phosphate ester, and its potassium salt (acid value 75 KOH-mg / g) A2-2: Cetyl phosphate ester, and its potassium salt (acid value 20 KOH-mg / g) A2-3: Stearyl phosphate ester, and its potassium salt (acid value 12.5 KOH-mg / g) A2-4: Stearyl phosphate ester, and its potassium salt (acid value 0.5 KOH-mg / g) A2-5: Potassium arachidyl phosphate (acid value 0 KOH-mg / g) <Ether-type surfactant> (Amine ether-type surfactant (B)) (Amine ether-type surfactant (B1)) B1-1: Phosphate of 10 moles of EO added to 1 mole of octylamine B1-2: Phosphate of 10 moles of EO added to 1 mole of decylamine B1-3: Phosphate of 10 moles of EO added to 1 mole of laurylamine B1-4: 10 moles of EO added to 1 mole of laurylamine B1-5: Random addition of 14 moles of EO and 2 moles of polypropylene oxide (hereinafter referred to as PO) to 1 mole of laurylamine B1-6: 4 moles of EO added to the random addition of 1 mole of EO and 3 moles of PO to 1 mole of laurylamine (Amine ether-type surfactant (B2)) B2-1: Phosphate of 10 moles of EO added to 1 mole of myristylamine B2-2: Phosphate of 10 moles of EO added to 1 mole of cetylamine B2-3: Phosphate of 10 moles of EO added to 1 mole of stearylamine B2-4: A product obtained by adding 2 moles of PO to a product obtained by adding 10 moles of EO to 1 mole of stearylamine B2-5: Phosphate of a product obtained by adding 10 moles of EO to 1 mole of oleylamine B2-6: A product obtained by adding 5 moles of PO to 1 mole of oleylamine In addition, the average number of carbon atoms in the hydrocarbon group of the organic amine in the amine ether type surfactant (B1) and the amine ether type surfactant (B2) was calculated as follows in Example 1, for example.

[0185] Average number of carbon atoms = (8×0.6 / 10)+(10×0.6 / 10)+(12×5 / 10)+(14×2 / 10)+(16×0.9 / 10)+(18×0.7 / 10)+(18×0.2 / 10)=12.94 The average number of carbon atoms in the hydrocarbon group of the organic amine in the amine ether type surfactant (B1) and the amine ether type surfactant (B2) is shown in the columns of "Average number of carbon atoms in the hydrocarbon group of the organic amine of B1, B2" in Tables 1 and 2.

[0186] Also, the proportion of ethylene oxide in the alkylene oxide in the amine ether type surfactant (B1) and the amine ether type surfactant (B2) was calculated as follows in Example 1, for example.

[0187] Proportion of ethylene oxide = (100×0.6 / 10)+(100×0.6 / 10)+(100×5 / 10)+(100×2 / 10)+(100×0.9 / 10)+(100×0.7 / 10)+(100×0.2 / 10)=100 The proportion of ethylene oxide in the alkylene oxide in the amine ether type surfactant (B1) and the amine ether type surfactant (B2) is shown in the columns of "Proportion of EO in AO of B1, B2 (mol%)" in Tables 1 and 2.

[0188] (Other ether type surfactants (B3)) B3-1: A product obtained by adding 7 moles of EO to 1 mole of lauryl alcohol B3-2: The product obtained by adding 9 moles of EO to 1 mole of lauryl alcohol B3-3: The product obtained by randomly adding 6 moles of EO and 2 moles of PO to 1 mole of C12-C13 alcohol B3-4: The product obtained by adding 3 moles of EO to 1 mole of C12-C14 alcohol B3-5: The product obtained by adding 7 moles of EO to the product obtained by adding 3 moles of PO to 1 mole of isotridecyl alcohol B3-6: The product obtained by adding 200 parts of EO to 100 parts of coconut fatty acid B3-7: The product obtained by adding 3 moles of EO to 1 mole of oleic acid B3-8: The product obtained by adding 10 moles of EO to 1 mole of lauryl alcohol B3-9: The product obtained by adding 25 moles of EO to 1 mole of lauryl alcohol B3-10: The product obtained by adding 5 moles of EO to 1 mole of oleyl alcohol B3-11: The product obtained by adding 25 moles of EO to 1 mole of lauric acid B3-12: The product obtained by adding 20 moles of EO to 1 mole of nonylphenol <Smoothing agent (C)> (Polyorganosiloxane (C1)) C1-1: Linear polydimethylsiloxane (kinematic viscosity at 25°C is 1×10 -5 m 2 / s) C1-2: Linear amino-modified dimethylpolysiloxane (kinematic viscosity at 25°C is 5×10 -3 m 2 / s) (Hydrocarbon (C2)) C2-1: Mineral oil (kinematic viscosity at 25°C is 5×10 -6 m 2 / s) C2-2: Paraffin wax (melting point 50°C) (Fatty acid ester (C3)) C3-1: Methyl oleate C3-2: Sorbitan monooleate C3-3: Octyl stearate C3-4: Stearyl stearate C3-5: Polyethylene glycol (mass average molecular weight 1100) monolaurate C3-6: Stearyl palmitate C3-7: Behenyl behenate (Fatty acid (C4)) C4-1: Oleic acid Test category 2 (antistatic property) On polyester cotton (1.2 de × 38 mm) without the treatment agent, the treatment agents described in the examples and comparative examples of Tables 1 and 2 were adhered so that the adhesion amount became 0.15% with respect to the polyester cotton. The polyester cotton with the treatment agent adhered was dried in a dryer at 80 °C for 2 hours and conditioned overnight in an atmosphere of 25 °C × 40% RH. Using 10 kg of the treated polyester cotton described above, a card sliver was obtained by passing it through a flat card (manufactured by Toyowa Kogyo Co., Ltd.) in an atmosphere of 25 °C × 40% RH. The card web when passing through the flat card was visually confirmed. Based on the sagging of the card web due to static electricity, the antistatic property was evaluated according to the following criteria. The results are shown in the "Antistatic property" column of Tables 1 and 2.

[0189] · Evaluation criteria for antistatic property 2 (Good): When sagging of the card web was not confirmed 1 (Poor): When sagging of the card web was confirmed Test category 3 (low adhesiveness) 5 g of the treatment agent of each example was placed in a glass petri dish (inner diameter 9.5 cm). At this time, the treatment agent was spread evenly in the glass petri dish. The temperature was adjusted for 24 hours under the conditions of 30 °C and 70% RH. After the temperature adjustment, the appearance of the treatment agent was visually confirmed and the properties were confirmed by the touch of the hand, and evaluated according to the following criteria. The results are shown in the "Low adhesiveness" column of Tables 1 and 2.

[0190] · Evaluation criteria for low adhesiveness 2 (Good): When the appearance after temperature adjustment was solid and there was no stickiness when touched by hand 1 (Poor): When the appearance after temperature adjustment was liquid or gel-like and sticky when touched by hand, or when the appearance after temperature adjustment was solid but sticky when touched by hand Test category 4 (smoothness) The card slivers obtained in Test Category 2 were confirmed using a scanning electron microscope (manufactured by JEOL Ltd.). More than 10 polyester fibers constituting the card slivers were confirmed, and based on the number of frictional damages on the fiber surface, the smoothness was evaluated according to the following criteria. The results are shown in the "Smoothness" columns of Tables 1 and 2.

[0191] · Evaluation criteria for smoothness 2 (Good): Less than an average of 3 damages per fiber on the fiber surface 1 (Poor): An average of 3 or more damages per fiber on the fiber surface Test Category 5 (Emulsion stability) The treatment agent for each example was diluted with warm water at about 70 °C to prepare a 1% diluted solution of the treatment agent. 100 mL of the prepared 1% diluted solution of the treatment agent was allowed to stand at 50 °C for 24 hours, and the appearance of the 1% diluted solution of the treatment agent after standing was visually confirmed and evaluated according to the following criteria. The results are shown in the "Emulsion stability" columns of Tables 1 and 2.

[0192] · Evaluation criteria for emulsion stability 6 (Extremely excellent): When no precipitate and oil droplets were generated 5 (Very excellent): When no oil droplets were generated but a precipitate was generated, and the precipitate was dissolved in less than 10 seconds by stirring with a stirring blade at 300 rpm 4 (Excellent): When no oil droplets were generated but a precipitate was generated, and the precipitate was dissolved in 10 seconds or more and less than 30 seconds by stirring with a stirring blade at 300 rpm 3 (Good): When no oil droplets were generated but a precipitate was generated, and the precipitate was dissolved in 30 seconds or more and less than 60 seconds by stirring with a stirring blade at 300 rpm 2 (Fair): When no oil droplets were generated but a precipitate was generated, and the precipitate was dissolved in 60 seconds or more and less than 90 seconds by stirring with a stirring blade at 300 rpm 1 (Poor): When oil droplets were generated, or a precipitate was generated and the precipitate was not dissolved even after stirring with a stirring blade at 300 rpm for 90 seconds or more As is clear from the evaluation results of each example with respect to the comparative examples in each table, the treatment agent of the present invention can improve the emulsion stability when it is made into an aqueous dilution. In addition, it can reduce the adhesion of the fiber surface to which the treatment agent is applied, and can improve the smoothness and antistatic property.

[0193] Test category 6 (Preparation of the first treatment agent of the three-agent type) (The first treatment agent of the three-agent type (I-1)) As shown in Table 3, 33.34 parts (%) of octyl phosphate and its potassium salt (acid value 25 KOH-mg / g) (A1-3) as the organic phosphate compound (A1), and 4 parts (%) of the phosphate (B1-1) obtained by adding 10 moles of EO to 1 mole of octylamine as the amine-ether type surfactant (B), 4 parts (%) of the phosphate (B1-2) obtained by adding 10 moles of EO to 1 mole of decylamine, 33.33 parts (%) of the phosphate (B1-3) obtained by adding 10 moles of EO to 1 mole of laurylamine, 13.33 parts (%) of the phosphate (B2-1) obtained by adding 10 moles of EO to 1 mole of myristylamine, 6 parts (%) of the phosphate (B2-2) obtained by adding 10 moles of EO to 1 mole of cetylamine, 4.67 parts (%) of the phosphate (B2-3) obtained by adding 10 moles of EO to 1 mole of stearylamine, and 1.33 parts (%) of the phosphate (B2-5) obtained by adding 10 moles of EO to 1 mole of oleylamine were mixed to prepare the first treatment agent of the three-agent type (I-1).

[0194] (The first treatment agents of the three-agent type (I-2) to (I-26)) The organic phosphate compound (A1), the amine-ether type surfactant (B), and other ether type surfactants (B3) were prepared in the same manner as the first treatment agent of the three-agent type (I-1) so as to contain them in the ratios shown in Tables 3 and 4.

[0195] The type and content of the organic phosphate compound (A1), the type and content of the amine ether type surfactant (B), and the type and content of the other ether type surfactant (B3) are shown in the columns of "organic phosphate compound (A1)", "amine ether type surfactant (B)", and "other ether type surfactant (B3)" in Tables 3 and 4, respectively.

[0196]

Table 3

[0197]

Table 4

[0198] (3-formulation second treatment agents (II-2) to (II-4)) In the same manner as the 3-formulation second treatment agent (II-1), it was prepared to contain the organic phosphate compound (A2) in the proportions shown in Table 5. The type and content of the organic phosphate compound (A2) are shown in the column of "organic phosphate compound (A2)" in Table 5.

[0199]

Table 5

[0200] (Three - dosage - form third treatment agents (III - 2) to (III - 14)) In the same manner as the three - dosage - form third treatment agent (III - 1), it was prepared to contain a smoothing agent (C) in the ratio shown in Table 6. The type and content of the smoothing agent (C) are shown in the "Smoothing agent (C)" column of Table 6.

[0201]

Table 6

[0202] · Evaluation criteria for formulation stability 2 (Good): When it did not gel 1 (Unacceptable): When it gelled Test category 10 (Preparation of treatment agents from three - dosage - form first treatment agent to three - dosage - form third treatment agent) (Example 2 - 1) 15% (parts) of the three - dosage - form first treatment agent (I - 1), 84% (parts) of the three - dosage - form second treatment agent (II - 1), and 1% (parts) of the three - dosage - form third treatment agent (III - 1) shown in Table 7 were mixed to prepare the treatment agent of Example 2 - 1.

[0203] (Examples 2 - 2 to 2 - 31) In the same manner as Example 2 - 1, the three - dosage - form first treatment agent, three - dosage - form second treatment agent, and three - dosage - form third treatment agent shown in Table 7 were mixed to prepare the treatment agents of each example.

[0204] The types and mass ratios of the first treatment agent of the three-agent type, the types and mass ratios of the second treatment agent of the three-agent type, and the types and mass ratios of the third treatment agent of the three-agent type are shown in the columns of "First Treatment Agent (I)", "Second Treatment Agent (II)", and "Third Treatment Agent (III)" in Table 7, respectively.

[0205]

Table 7

[0206] As is clear from the evaluation results of each example in Table 7, the treatment agent of the present invention can improve the emulsion stability when used as a water dilution even when it is a three-agent type treatment agent. In addition, it can reduce the adhesion of the fiber surface to which the treatment agent is applied, and can improve the smoothness and antistatic property.

[0207] Test category 12 (Preparation of the first treatment agent of the four-agent type) (First treatment agent of the four-agent type (i-1)) As shown in Table 8, a first treatment agent of the four-agent type (i-1) consisting of 100 parts (%) of octyl phosphate ester and its potassium salt (acid value 25 KOH-mg / g) (A1-3) as the organic phosphate ester compound (A1) was prepared.

[0208] (First treatment agents of the four-agent type (i-2) to (i-5)) The organic phosphate ester compound (A1) was prepared in the same manner as the first treatment agent of the four-agent type (i-1) so as to contain it in the ratio shown in Table 8. The types and contents of the organic phosphate ester compound (A1) are shown in the column of "Organic phosphate ester compound (A1)" in Table 8.

[0209]

Table 8

[0210] (Four-form type second treatment agents (ii-2) to (ii-4)) In the same manner as the four-form type second treatment agent (ii-1), it was prepared to contain the organic phosphate compound (A2) at the ratio shown in Table 9. The types and contents of the organic phosphate compound (A2) are shown in the column of "organic phosphate compound (A2)" in Table 9.

[0211]

Table 9

[0212] (Four-form type third treatment agents (iii-2) to (iii-16)) In the same manner as the fourth dosage form third treatment agent (iii-1), it was prepared to contain an amine ether type surfactant (B) and another ether type surfactant (B3) at the ratios shown in Table 10. The type and content of the amine ether type surfactant (B) and the type and content of the other ether type surfactant (B3) are shown in the columns of "Amine ether type surfactant (B)" and "Other ether type surfactant (B3)" in Table 10, respectively.

[0213]

Table 10

[0214] (Fourth dosage form fourth treatment agents (iv-2) to (iv-14)) In the same manner as the fourth dosage form fourth treatment agent (iv-1), it was prepared to contain a smoothing agent (C) at the ratios shown in Table 11. The type and content of the smoothing agent (C) are shown in the column of "Smoothing agent (C)" in Table 11.

[0215]

Table 11

[0216] ·Evaluation criteria for formulation stability 2 (Good): When no gelation occurred 1 (Poor): When gelation occurred Test category 17 (Preparation of treatment agents from the 4-formulation 1st treatment agent to the 4-formulation 4th treatment agent) (Example 3-1) 5% (parts) of the 4-formulation 1st treatment agent (i-1), 84% (parts) of the 4-formulation 2nd treatment agent (ii-1), 10% (parts) of the 4-formulation 3rd treatment agent (iii-1), and 1% (parts) of the 4-formulation 4th treatment agent (iv-1) shown in Table 12 were mixed to prepare the treatment agent of Example 3-1.

[0217] (Examples 3-2 to 3-31) In the same manner as in Example 3-1, the 4-formulation 1st treatment agent, 4-formulation 2nd treatment agent, 4-formulation 3rd treatment agent, and 4-formulation 4th treatment agent shown in Table 12 were mixed to prepare the treatment agents for each example.

[0218] The type and mass ratio of the 4-formulation 1st treatment agent, the type and mass ratio of the 4-formulation 2nd treatment agent, the type and mass ratio of the 4-formulation 3rd treatment agent, and the type and mass ratio of the 4-formulation 4th treatment agent are shown in the columns of "1st treatment agent (i)", "2nd treatment agent (ii)", "3rd treatment agent (iii)", and "4th treatment agent (iv)" in Table 12, respectively.

[0219]

Table 12

[0220] As is clear from the evaluation results of each example in Table 12, the treatment agent of the present invention can improve the emulsion stability when used as a water-diluted liquid even when it is a 4-formulation treatment agent. In addition, it can reduce the adhesion of the fiber surface to which the treatment agent is applied, and can improve the smoothness and antistatic property.

[0221] (Supplementary Note) Next, the technical ideas that can be grasped from the above embodiments and alternative examples are supplemented below. (A) A three-agent type first treatment agent for polyester synthetic fibers containing the organic phosphate ester compound (A1) and the amine-ether type surfactant (B), a three-agent type second treatment agent for polyester synthetic fibers containing the organic phosphate ester compound (A2), and a three-agent type third treatment agent for polyester synthetic fibers containing the smoothing agent (C), the treatment agent for polyester synthetic fibers which is a set including these.

[0222] (B) A four-agent type first treatment agent for polyester synthetic fibers containing the organic phosphate ester compound (A1), a four-agent type second treatment agent for polyester synthetic fibers containing the organic phosphate ester compound (A2), a four-agent type third treatment agent for polyester synthetic fibers containing the amine-ether type surfactant (B), and a four-agent type fourth treatment agent for polyester synthetic fibers containing the smoothing agent (C), the treatment agent for polyester synthetic fibers which is a set including these.

[0223] (C) A diluted solution of a treatment agent for polyester synthetic fibers containing the treatment agent for polyester synthetic fibers and water, wherein the treatment agent for polyester synthetic fibers is contained in an amount of 0.1 mass% or more and 10 mass% or less.

[0224] (D) A method for treating polyester synthetic fibers by applying the diluted solution of the treatment agent for polyester synthetic fibers to the polyester synthetic fibers.

Claims

1. A treatment agent for polyester synthetic fibers, comprising the following organic phosphate compound (A), the following amine ether surfactant (B), and the following smoothing agent (C). Organophosphate compound (A): an organophosphate compound containing an organophosphate compound (A1) which is at least one selected from an organophosphate ester having a hydrocarbon group having from 4 to 11 carbon atoms in the molecule and a salt thereof, and an organophosphate ester compound (A2) which is at least one selected from an organophosphate ester having a hydrocarbon group having from 12 to 20 carbon atoms in the molecule and a salt thereof. Amine ether type surfactant (B): An amine ether type surfactant containing an amine ether type surfactant (B1) which is at least one selected from a compound in which 2 moles or more and 100 moles or less of an alkylene oxide having 2 or more and 3 carbon atoms are added to 1 mole of an organic amine having a hydrocarbon group having 8 to 13 carbon atoms in the molecule, and a salt thereof, and an amine ether type surfactant (B2) which is at least one selected from a compound in which 2 moles or more and 100 moles or less of an alkylene oxide having 2 or more and 3 carbon atoms are added to 1 mole of an organic amine having a hydrocarbon group having 14 to 18 carbon atoms in the molecule, and a salt thereof. Smoothing agent (C): At least one selected from polyorganosiloxanes (C1), hydrocarbons (C2), fatty acid esters (C3), and fatty acids (C4).

2. 2. The agent for treating polyester synthetic fibers according to claim 1, wherein the average number of carbon atoms in the hydrocarbon group of the organic amine in the amine ether type surfactant (B1) and the amine ether type surfactant (B2) is 10 or more and 15 or less.

3. 2. The agent for treating polyester-based synthetic fibers according to claim 1, wherein the ratio of ethylene oxide to alkylene oxide in the amine ether type surfactant (B1) and the amine ether type surfactant (B2) is 80 mol % or more and 100 mol % or less.

4. 2. The treatment agent for polyester-based synthetic fibers according to claim 1, wherein the amine ether surfactant (B) is contained in an amount of 5 parts by mass or more and 40 parts by mass or less, based on 100 parts by mass of the total content of the organic phosphate ester compound (A), the amine ether surfactant (B), and the smoothing agent (C).

5. 2. The treatment agent for polyester-based synthetic fibers according to claim 1, wherein the treatment agent contains the organic phosphate ester compound (A) in an amount of 50 parts by mass or more and 90 parts by mass or less, the amine ether type surfactant (B) in an amount of 5 parts by mass or more and 40 parts by mass or less, and the smoothing agent (C) in an amount of 0.1 parts by mass or more and 10 parts by mass or less, when the total content of the organic phosphate ester compound (A), the amine ether type surfactant (B), and the smoothing agent (C) is taken as 100 parts by mass.

6. A three-component first treatment agent for polyester synthetic fibers, which is used in combination with a three-component second treatment agent for polyester synthetic fibers containing the following organic phosphoric acid ester compound (A2) and a three-component third treatment agent for polyester synthetic fibers containing the following smoothing agent (C), A three-component first treatment agent for polyester synthetic fibers, comprising the following organic phosphate compound (A1) and the following amine ether surfactant (B). Organic phosphate compound (A1): an organic phosphate compound which is at least one selected from organic phosphates having a hydrocarbon group having from 4 to 11 carbon atoms in the molecule, and salts thereof. Organic phosphate compound (A2): an organic phosphate compound which is at least one selected from organic phosphates having a hydrocarbon group having from 12 to 20 carbon atoms in the molecule, and salts thereof. Amine ether type surfactant (B): An amine ether type surfactant containing an amine ether type surfactant (B1) which is at least one selected from a compound in which 2 moles or more and 100 moles or less of an alkylene oxide having 2 or more and 3 carbon atoms are added to 1 mole of an organic amine having a hydrocarbon group having 8 to 13 carbon atoms in the molecule, and a salt thereof, and an amine ether type surfactant (B2) which is at least one selected from a compound in which 2 moles or more and 100 moles or less of an alkylene oxide having 2 or more and 3 carbon atoms are added to 1 mole of an organic amine having a hydrocarbon group having 14 to 18 carbon atoms in the molecule, and a salt thereof. Smoothing agent (C): At least one selected from polyorganosiloxanes (C1), hydrocarbons (C2), fatty acid esters (C3), and fatty acids (C4).

7. A three-component second treatment agent for polyester synthetic fibers to be used in combination with a three-component first treatment agent for polyester synthetic fibers containing the following organic phosphoric acid ester compound (A1) and the following amine ether surfactant (B), and a three-component third treatment agent for polyester synthetic fibers containing the following smoothing agent (C), A three-component second treatment agent for polyester synthetic fibers, comprising the following organic phosphate ester compound (A2): Organic phosphate compound (A1): an organic phosphate compound which is at least one selected from organic phosphates having a hydrocarbon group having from 4 to 11 carbon atoms in the molecule, and salts thereof. Organic phosphate compound (A2): an organic phosphate compound which is at least one selected from organic phosphates having a hydrocarbon group having from 12 to 20 carbon atoms in the molecule, and salts thereof. Amine ether type surfactant (B): An amine ether type surfactant containing an amine ether type surfactant (B1) which is at least one selected from a compound in which 2 moles or more and 100 moles or less of an alkylene oxide having 2 or more and 3 carbon atoms are added to 1 mole of an organic amine having a hydrocarbon group having 8 to 13 carbon atoms in the molecule, and a salt thereof, and an amine ether type surfactant (B2) which is at least one selected from a compound in which 2 moles or more and 100 moles or less of an alkylene oxide having 2 or more and 3 carbon atoms are added to 1 mole of an organic amine having a hydrocarbon group having 14 to 18 carbon atoms in the molecule, and a salt thereof. Smoothing agent (C): At least one selected from polyorganosiloxanes (C1), hydrocarbons (C2), fatty acid esters (C3), and fatty acids (C4).

8. A three-component type third treatment agent for polyester synthetic fibers to be used in combination with a three-component type first treatment agent for polyester synthetic fibers containing the following organic phosphoric acid ester compound (A1) and the following amine ether surfactant (B), and a three-component type second treatment agent for polyester synthetic fibers containing the following organic phosphoric acid ester compound (A2), A three-component third treatment agent for polyester synthetic fibers, comprising the following smoothing agent (C): Organic phosphate compound (A1): an organic phosphate compound which is at least one selected from organic phosphates having a hydrocarbon group having from 4 to 11 carbon atoms in the molecule, and salts thereof. Organic phosphate compound (A2): an organic phosphate compound which is at least one selected from organic phosphates having a hydrocarbon group having from 12 to 20 carbon atoms in the molecule, and salts thereof. Amine ether type surfactant (B): An amine ether type surfactant containing an amine ether type surfactant (B1) which is at least one selected from a compound in which 2 moles or more and 100 moles or less of an alkylene oxide having 2 or more and 3 carbon atoms are added to 1 mole of an organic amine having a hydrocarbon group having 8 to 13 carbon atoms in the molecule, and a salt thereof, and an amine ether type surfactant (B2) which is at least one selected from a compound in which 2 moles or more and 100 moles or less of an alkylene oxide having 2 or more and 3 carbon atoms are added to 1 mole of an organic amine having a hydrocarbon group having 14 to 18 carbon atoms in the molecule, and a salt thereof. Smoothing agent (C): At least one selected from polyorganosiloxanes (C1), hydrocarbons (C2), fatty acid esters (C3), and fatty acids (C4).

9. A four-component first treatment agent for polyester synthetic fibers, which is used in combination with a four-component second treatment agent for polyester synthetic fibers containing the following organic phosphoric acid ester compound (A2), a four-component third treatment agent for polyester synthetic fibers containing the following amine ether surfactant (B), and a four-component fourth treatment agent for polyester synthetic fibers containing the following smoothing agent (C), A four-component first treatment agent for polyester synthetic fibers, comprising the following organic phosphate ester compound (A1): Organic phosphate compound (A1): an organic phosphate compound which is at least one selected from organic phosphates having a hydrocarbon group having from 4 to 11 carbon atoms in the molecule, and salts thereof. Organic phosphate compound (A2): an organic phosphate compound which is at least one selected from organic phosphates having a hydrocarbon group having from 12 to 20 carbon atoms in the molecule, and salts thereof. Amine ether type surfactant (B): An amine ether type surfactant containing an amine ether type surfactant (B1) which is at least one selected from a compound in which 2 moles or more and 100 moles or less of an alkylene oxide having 2 or more and 3 carbon atoms are added to 1 mole of an organic amine having a hydrocarbon group having 8 to 13 carbon atoms in the molecule, and a salt thereof, and an amine ether type surfactant (B2) which is at least one selected from a compound in which 2 moles or more and 100 moles or less of an alkylene oxide having 2 or more and 3 carbon atoms are added to 1 mole of an organic amine having a hydrocarbon group having 14 to 18 carbon atoms in the molecule, and a salt thereof. Smoothing agent (C): At least one selected from polyorganosiloxanes (C1), hydrocarbons (C2), fatty acid esters (C3), and fatty acids (C4).

10. A four-component type second treatment agent for polyester synthetic fibers to be used in combination with a four-component type first treatment agent for polyester synthetic fibers containing the following organic phosphoric acid ester compound (A1), a four-component type third treatment agent for polyester synthetic fibers containing the following amine ether surfactant (B), and a four-component type fourth treatment agent for polyester synthetic fibers containing the following smoothing agent (C), A four-component second treatment agent for polyester synthetic fibers, comprising the following organic phosphate ester compound (A2): Organic phosphate compound (A1): an organic phosphate compound which is at least one selected from organic phosphates having a hydrocarbon group having from 4 to 11 carbon atoms in the molecule, and salts thereof. Organic phosphate compound (A2): an organic phosphate compound which is at least one selected from organic phosphates having a hydrocarbon group having from 12 to 20 carbon atoms in the molecule, and salts thereof. Amine ether type surfactant (B): An amine ether type surfactant containing an amine ether type surfactant (B1) which is at least one selected from a compound in which 2 moles or more and 100 moles or less of an alkylene oxide having 2 or more and 3 carbon atoms are added to 1 mole of an organic amine having a hydrocarbon group having 8 to 13 carbon atoms in the molecule, and a salt thereof, and an amine ether type surfactant (B2) which is at least one selected from a compound in which 2 moles or more and 100 moles or less of an alkylene oxide having 2 or more and 3 carbon atoms are added to 1 mole of an organic amine having a hydrocarbon group having 14 to 18 carbon atoms in the molecule, and a salt thereof. Smoothing agent (C): At least one selected from polyorganosiloxanes (C1), hydrocarbons (C2), fatty acid esters (C3), and fatty acids (C4).

11. A four-component type third treatment agent for polyester synthetic fibers to be used in combination with a four-component type first treatment agent for polyester synthetic fibers containing the following organic phosphate ester compound (A1), a four-component type second treatment agent for polyester synthetic fibers containing the following organic phosphate ester compound (A2), and a four-component type fourth treatment agent for polyester synthetic fibers containing the following smoothing agent (C), A four-component third treatment agent for polyester synthetic fibers, comprising the following amine ether surfactant (B): Organic phosphate compound (A1): an organic phosphate compound which is at least one selected from organic phosphates having a hydrocarbon group having from 4 to 11 carbon atoms in the molecule, and salts thereof. Organic phosphate compound (A2): an organic phosphate compound which is at least one selected from organic phosphates having a hydrocarbon group having from 12 to 20 carbon atoms in the molecule, and salts thereof. Amine ether type surfactant (B): An amine ether type surfactant containing an amine ether type surfactant (B1) which is at least one selected from a compound in which 2 moles or more and 100 moles or less of an alkylene oxide having 2 or more and 3 carbon atoms are added to 1 mole of an organic amine having a hydrocarbon group having 8 to 13 carbon atoms in the molecule, and a salt thereof, and an amine ether type surfactant (B2) which is at least one selected from a compound in which 2 moles or more and 100 moles or less of an alkylene oxide having 2 or more and 3 carbon atoms are added to 1 mole of an organic amine having a hydrocarbon group having 14 to 18 carbon atoms in the molecule, and a salt thereof. Smoothing agent (C): At least one selected from polyorganosiloxanes (C1), hydrocarbons (C2), fatty acid esters (C3), and fatty acids (C4).

12. A four-component type fourth treatment agent for polyester synthetic fibers, which is used in combination with a four-component type first treatment agent for polyester synthetic fibers containing the following organic phosphate ester compound (A1), a four-component type second treatment agent for polyester synthetic fibers containing the following organic phosphate ester compound (A2), and a four-component type third treatment agent for polyester synthetic fibers containing the following amine ether surfactant (B), A four-component fourth treating agent for polyester synthetic fibers, comprising the following smoothing agent (C): Organic phosphate compound (A1): an organic phosphate compound which is at least one selected from organic phosphates having a hydrocarbon group having from 4 to 11 carbon atoms in the molecule, and salts thereof. Organic phosphate compound (A2): an organic phosphate compound which is at least one selected from organic phosphates having a hydrocarbon group having from 12 to 20 carbon atoms in the molecule, and salts thereof. Amine ether type surfactant (B): An amine ether type surfactant containing an amine ether type surfactant (B1) which is at least one selected from a compound in which 2 moles or more and 100 moles or less of an alkylene oxide having 2 or more and 3 carbon atoms are added to 1 mole of an organic amine having a hydrocarbon group having 8 to 13 carbon atoms in the molecule, and a salt thereof, and an amine ether type surfactant (B2) which is at least one selected from a compound in which 2 moles or more and 100 moles or less of an alkylene oxide having 2 or more and 3 carbon atoms are added to 1 mole of an organic amine having a hydrocarbon group having 14 to 18 carbon atoms in the molecule, and a salt thereof. Smoothing agent (C): At least one selected from polyorganosiloxanes (C1), hydrocarbons (C2), fatty acid esters (C3), and fatty acids (C4).

13. A polyester synthetic fiber having the treatment agent for polyester synthetic fiber according to any one of claims 1 to 5 adhered thereto.

14. The polyester synthetic fiber according to claim 13, wherein the polyester synthetic fiber is a polyester staple fiber.

15. 14. The polyester synthetic fiber according to claim 13, which is for producing spun yarn.

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