Treatment agents for polyester synthetic fibers, first treatment agent, second treatment agent, third treatment agent and combinations thereof, diluents of the treatment agents, polyester synthetic fibers and methods for treating them.

Abstract

The objective of this invention is to provide a treatment agent for polyester synthetic fibers, which improves the emulsion stability when the treatment agent is prepared as an aqueous dilution, reduces the adhesion of the fiber surface to which the treatment agent has been applied, and suppresses the reduction in fiber strength. The polyester synthetic fiber treatment agent of this invention contains at least 5% by mass of a (poly)oxyalkylene derivative (A), at least 1% by mass of an inorganic acid compound (B), and at least 5% by mass of an organophosphate compound (C). The 1% by mass aqueous dilution of the polyester synthetic fiber treatment agent has a pH of 5.5 or higher and 8.5 or lower at 25°C. The inorganic acid compound (B) is selected from at least one of sulfuric acid, nitric acid, hydrochloric acid, and their salts. The organophosphate compound (C) is selected from at least one of an organophosphate having an alkyl group having 16 or more and 20 or fewer carbon atoms, and their salts.

Description

Technical Field

[0001] This invention relates to a treatment agent for polyester synthetic fibers, a composition containing the treatment agent for polyester synthetic fibers, a first treatment agent for polyester synthetic fibers, a composition containing the first treatment agent for polyester synthetic fibers, a second treatment agent for polyester synthetic fibers, a composition containing the second treatment agent for polyester synthetic fibers, a third treatment agent for polyester synthetic fibers, a composition containing the third treatment agent for polyester synthetic fibers, a diluent for the treatment agent for polyester synthetic fibers, a method for treating polyester synthetic fibers, and polyester synthetic fibers. Background Technology

[0002] For example, in the spinning and stretching steps and finishing steps of synthetic fibers, from the perspective of reducing friction, antistatic properties, and bundle properties of synthetic fibers, sometimes a synthetic fiber treatment agent is applied to the surface of the fiber.

[0003] Currently, synthetic fiber treatment agents disclosed in Patent Documents 1 and 2 are known. Patent Document 1 discloses a treatment agent for polyester synthetic fibers, which contains a predetermined alkyl phosphate ester, a predetermined surfactant, and a monoaliphatic alcohol having a predetermined alkyl group in a predetermined proportion. Patent Document 2 discloses a fiber treatment agent for spinning manufacturing, which contains component A, which is composed of polyvinyl alcohol or its derivatives, and component B, which is composed of potassium salt of alkyl phosphate ester or potassium salt of polyoxyalkylene alkyl phosphate ester having a predetermined alkyl group, wherein component A and component B are mixed in a predetermined proportion.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent No. 5796923

[0007] Patent Document 2: Japanese Patent No. 5651033 Summary of the Invention

[0008] The problem that the invention aims to solve

[0009] However, in conventional synthetic fiber treatment agents, emulsification stability sometimes decreases when the agent is diluted with water, resulting in the formation of precipitates. Additionally, the adhesiveness of the fiber surface treated with the agent sometimes increases, leading to poor spinning. Furthermore, the strength of the fiber treated with the agent sometimes decreases, resulting in poor process flow.

[0010] Methods for solving problems

[0011] In order to solve the above-mentioned problems, the inventors conducted research and found that the treatment agent for polyester synthetic fibers contains a (poly)oxyalkylene derivative (A), a predetermined inorganic acid compound (B), and a predetermined organophosphate compound (C), and the pH setting is particularly effective.

[0012] The various methods used to solve the above-mentioned problems are recorded.

[0013] Method 1 is a treatment agent for polyester synthetic fibers, containing 5% by mass or more of a (poly)oxyalkylene derivative (A), 1% by mass or more of the following inorganic acid compound (B), and 5% by mass or more of the following organophosphate compound (C); the key feature is that: a 1% by mass aqueous dilution of the above-mentioned treatment agent for polyester synthetic fibers (without solvent) has a pH of 5.5 or more and 8.5 or less at 25°C; the inorganic acid compound (B) is selected from at least one of sulfuric acid, nitric acid, hydrochloric acid, and their salts; the organophosphate compound (C) is selected from at least one of organophosphates having alkyl groups having 16 or more and 20 or fewer carbon atoms in the molecule, and their salts.

[0014] Method 2 is a treatment agent for polyester synthetic fibers as described in Method 1, wherein when the total content ratio of the above-mentioned (poly)oxyalkylene derivative (A), the above-mentioned inorganic acid compound (B), and the above-mentioned organophosphate compound (C) is set to 100 parts by mass, the total content ratio of the above-mentioned (poly)oxyalkylene derivative (A) and the above-mentioned inorganic acid compound (B) is 20 parts by mass or more and 80 parts by mass or less, and the content ratio of the above-mentioned organophosphate compound (C) is 20 parts by mass or more and 80 parts by mass or less.

[0015] Method 3 is a treatment agent for polyester synthetic fibers as described in Method 1 or 2, wherein it is configured to include, in group form: a first treatment agent of type 2 for polyester synthetic fibers containing the above-mentioned (poly)oxyalkylene derivative (A), and a second treatment agent of type 2 for polyester synthetic fibers containing the above-mentioned organophosphate compound (C); any one or both of the above-mentioned first treatment agent of type 2 for polyester synthetic fibers and the above-mentioned second treatment agent of type 2 for polyester synthetic fibers contain the above-mentioned inorganic acid compound (B).

[0016] Method 4 is a treatment agent for polyester synthetic fibers as described in Method 1 or 2, wherein it is configured to include, in group form: a first treatment agent of type 3 for polyester synthetic fibers containing the above-mentioned (poly)oxyalkylene derivative (A), a second treatment agent of type 3 for polyester synthetic fibers containing the above-mentioned organophosphate compound (C), and a third treatment agent of type 3 for polyester synthetic fibers containing the above-mentioned inorganic acid compound (B).

[0017] Method 5 is a treatment agent for polyester synthetic fibers as described in any of Methods 1 to 4, wherein the polyester synthetic fibers are polyester staple fibers.

[0018] Method 6 is a treatment agent for polyester synthetic fibers as described in any of Methods 1 to 5, wherein the polyester synthetic fibers are for spinning.

[0019] Method 7 is a composition containing a treatment agent for polyester synthetic fibers, characterized in that it comprises the treatment agent for polyester synthetic fibers described in any one of methods 1 to 6 and the solvent (S) described below; the solvent (S) has a boiling point of 105°C or less at atmospheric pressure.

[0020] Method 8 is a first treatment agent of a two-component formulation for polyester synthetic fibers, containing a (poly)oxyalkylene derivative (A), and used in combination with a second treatment agent of a two-component formulation for polyester synthetic fibers or a composition containing the second treatment agent of a two-component formulation for polyester synthetic fibers; the second treatment agent of a two-component formulation for polyester synthetic fibers contains the following organophosphate compound (C); the composition containing the second treatment agent of a two-component formulation for polyester synthetic fibers contains the second treatment agent of a two-component formulation for polyester synthetic fibers and the following solvent (S); the key point is that: either or both of the first treatment agent of a two-component formulation for polyester synthetic fibers and the second treatment agent of a two-component formulation for polyester synthetic fibers contain the following inorganic acid compound (B); when the first treatment agent of a two-component formulation for polyester synthetic fibers and the second treatment agent of a two-component formulation for polyester synthetic fibers contain the following inorganic acid compound (B); When the mixture of the second type of treatment agent (excluding solvent) is prepared as a 1% by mass water dilution, the pH at 25°C is 5.5 or higher and 8.5 or lower; the mixture of the first type of treatment agent for polyester synthetic fibers and the second type of treatment agent for polyester synthetic fibers (excluding solvent) contains 5% by mass or higher of the above-mentioned (poly)oxyalkylene derivative (A), 1% by mass or higher of the above-mentioned inorganic acid compound (B), and 5% by mass or higher of the above-mentioned organophosphate compound (C); the inorganic acid compound (B) is selected from at least one of sulfuric acid, nitric acid, hydrochloric acid, and their salts; the organophosphate compound (C) is selected from at least one of organophosphates having alkyl groups having 16 or more and 20 or fewer carbon atoms in the molecule, and their salts; the solvent (S) has a boiling point of 105°C or lower at atmospheric pressure.

[0021] Method 9 is a composition containing a first treatment agent of a second formulation for polyester synthetic fibers, characterized in that it contains the first treatment agent of a second formulation for polyester synthetic fibers as described in Method 8 and the solvent (S) below; the solvent (S) has a boiling point of 105°C or less at atmospheric pressure.

[0022] Method 10 is a second treatment agent of a two-component formulation for polyester synthetic fibers, comprising the following organophosphate compound (C), and used in combination with a first treatment agent of a two-component formulation for polyester synthetic fibers or a composition containing the first treatment agent of a two-component formulation for polyester synthetic fibers; wherein the first treatment agent of a two-component formulation for polyester synthetic fibers comprises a (poly)oxyalkylene derivative (A); wherein the composition containing the first treatment agent of a two-component formulation for polyester synthetic fibers comprises the first treatment agent of a two-component formulation for polyester synthetic fibers and the following solvent (S); the key point is that: either or both of the first treatment agent of a two-component formulation for polyester synthetic fibers and the second treatment agent of a two-component formulation for polyester synthetic fibers comprise the following inorganic acid compound (B); when the first treatment agent of a two-component formulation for polyester synthetic fibers and the second treatment agent of a two-component formulation for polyester synthetic fibers... When the mixture of the second type of treatment agent (excluding solvent) is prepared as a 1% by mass water dilution, the pH at 25°C is 5.5 or higher and 8.5 or lower; the mixture of the first type of treatment agent for polyester synthetic fibers and the second type of treatment agent for polyester synthetic fibers (excluding solvent) contains 5% by mass or higher of the above-mentioned (poly)oxyalkylene derivative (A), 1% by mass or higher of the above-mentioned inorganic acid compound (B), and 5% by mass or higher of the above-mentioned organophosphate compound (C); the inorganic acid compound (B) is selected from at least one of sulfuric acid, nitric acid, hydrochloric acid, and their salts; the organophosphate compound (C) is selected from at least one of organophosphates having alkyl groups having 16 or more and 20 or fewer carbon atoms in the molecule, and their salts; the solvent (S) has a boiling point of 105°C or lower at atmospheric pressure.

[0023] Method 11 is a composition containing a second treatment agent of a second formulation for polyester synthetic fibers, characterized in that it contains the second treatment agent of a second formulation for polyester synthetic fibers as described in Method 10 and the solvent (S) described below; the solvent (S) has a boiling point of 105°C or less at atmospheric pressure.

[0024] Method 12 is a first treatment agent of a 3-component formulation for polyester synthetic fibers, containing a (poly)oxyalkylene derivative (A), and used in combination with a second treatment agent of a 3-component formulation for polyester synthetic fibers or a composition containing the second treatment agent of a 3-component formulation for polyester synthetic fibers, and a third treatment agent of a 3-component formulation for polyester synthetic fibers or a composition containing the third treatment agent of a 3-component formulation for polyester synthetic fibers; the second treatment agent of the 3-component formulation for polyester synthetic fibers contains the following organophosphate compound (C); the composition containing the second treatment agent of the 3-component formulation for polyester synthetic fibers contains the second treatment agent of the 3-component formulation for polyester synthetic fibers and the following solvent (S); the third treatment agent of the 3-component formulation for polyester synthetic fibers contains the following inorganic acid compound (B); the composition containing the third treatment agent of the 3-component formulation for polyester synthetic fibers contains the second treatment agent of the 3-component formulation for polyester synthetic fibers and the following solvent (S); the key point is that: when the first treatment agent of the 3-component formulation for polyester synthetic fibers, When the mixture of the above-mentioned second treatment agent of type 3 for polyester synthetic fibers and the above-mentioned third treatment agent of type 3 for polyester synthetic fibers (excluding solvent) is prepared as a 1% by mass water dilution, the pH at 25°C is 5.5 or higher and 8.5 or lower; the mixture of the above-mentioned first treatment agent of type 3 for polyester synthetic fibers, the above-mentioned second treatment agent of type 3 for polyester synthetic fibers and the above-mentioned third treatment agent of type 3 for polyester synthetic fibers (excluding solvent) contains 5% by mass or higher of the above-mentioned (poly)oxyalkylene derivative (A), 1% by mass or higher of the above-mentioned inorganic acid compound (B), and 5% by mass or higher of the above-mentioned organophosphate compound (C); the inorganic acid compound (B) is selected from at least one of sulfuric acid, nitric acid, hydrochloric acid, and their salts; the organophosphate compound (C) is selected from at least one of organophosphates having alkyl groups having 16 or more and 20 or fewer carbon atoms in the molecule, and their salts; the solvent (S) has a boiling point of 105°C or lower at atmospheric pressure.

[0025] Method 13 is a composition containing a first treatment agent of a third formulation for polyester synthetic fibers, characterized in that it contains the first treatment agent of a third formulation for polyester synthetic fibers as described in Method 12 and the solvent (S) described below; the solvent (S) has a boiling point of 105°C or less at atmospheric pressure.

[0026] Method 14 is a second treatment agent of a 3-component formulation for polyester synthetic fibers, containing an organophosphate compound (C), and used in combination with a first treatment agent of a 3-component formulation for polyester synthetic fibers or a composition containing the first treatment agent of a 3-component formulation for polyester synthetic fibers, and a third treatment agent of a 3-component formulation for polyester synthetic fibers or a composition containing the third treatment agent of a 3-component formulation for polyester synthetic fibers; the first treatment agent of a 3-component formulation for polyester synthetic fibers contains a (poly)oxyalkylene derivative (A); the composition containing the first treatment agent of a 3-component formulation for polyester synthetic fibers contains the first treatment agent of a 3-component formulation for polyester synthetic fibers and the following solvent (S); the third treatment agent of a 3-component formulation for polyester synthetic fibers contains an inorganic acid compound (B); the composition containing the third treatment agent of a 3-component formulation for polyester synthetic fibers contains the third treatment agent of a 3-component formulation for polyester synthetic fibers and the following solvent (S); the key point is that: when the first treatment agent of a 3-component formulation for polyester synthetic fibers, the above... When the mixture of the second treatment agent of the third treatment agent of the third formulation for polyester synthetic fibers (excluding solvent) is prepared as a 1% by mass water dilution, the pH at 25°C is 5.5 or higher and 8.5 or lower; the mixture of the first treatment agent of the third formulation for polyester synthetic fibers, the second treatment agent of the third formulation for polyester synthetic fibers, and the third treatment agent of the third formulation for polyester synthetic fibers (excluding solvent) contains 5% by mass or higher of the above-mentioned (poly)oxyalkylene derivative (A), 1% by mass or higher of the above-mentioned inorganic acid compound (B), and 5% by mass or higher of the above-mentioned organophosphate compound (C); the inorganic acid compound (B) is selected from at least one of sulfuric acid, nitric acid, hydrochloric acid, and their salts; the organophosphate compound (C) is selected from at least one of organophosphates having alkyl groups having 16 or more and 20 or fewer carbon atoms in the molecule, and their salts; the solvent (S) has a boiling point of 105°C or lower at atmospheric pressure.

[0027] Method 15 is a composition containing a second treatment agent of a third formulation for polyester synthetic fibers, characterized in that it contains the second treatment agent of a third formulation for polyester synthetic fibers as described in claim 14 and the solvent (S) described below; the solvent (S) has a boiling point of 105°C or less at atmospheric pressure.

[0028] Method 16 is a third treatment agent of a 3-component formulation for polyester synthetic fibers, containing an inorganic acid compound (B), and used in combination with a first treatment agent of a 3-component formulation for polyester synthetic fibers or a composition containing the first treatment agent of a 3-component formulation for polyester synthetic fibers, and a second treatment agent of a 3-component formulation for polyester synthetic fibers or a composition containing the second treatment agent of a 3-component formulation for polyester synthetic fibers; the first treatment agent of a 3-component formulation for polyester synthetic fibers contains a (poly)oxyalkylene derivative (A); the composition containing the first treatment agent of a 3-component formulation for polyester synthetic fibers contains the first treatment agent of a 3-component formulation for polyester synthetic fibers and the following solvent (S); the second treatment agent of a 3-component formulation for polyester synthetic fibers contains the following organophosphate compound (C); the composition containing the second treatment agent of a 3-component formulation for polyester synthetic fibers contains the second treatment agent of a 3-component formulation for polyester synthetic fibers and the following solvent (S); the key point is that: when the first treatment agent of a 3-component formulation for polyester synthetic fibers, When the mixture of the above-mentioned second treatment agent of type 3 for polyester synthetic fibers and the above-mentioned third treatment agent of type 3 for polyester synthetic fibers (excluding solvent) is prepared as a 1% by mass water dilution, the pH at 25°C is 5.5 or higher and 8.5 or lower; the mixture of the above-mentioned first treatment agent of type 3 for polyester synthetic fibers, the above-mentioned second treatment agent of type 3 for polyester synthetic fibers and the above-mentioned third treatment agent of type 3 for polyester synthetic fibers (excluding solvent) contains 5% by mass or higher of the above-mentioned (poly)oxyalkylene derivative (A), 1% by mass or higher of the above-mentioned inorganic acid compound (B), and 5% by mass or higher of the above-mentioned organophosphate compound (C); the inorganic acid compound (B) is selected from at least one of sulfuric acid, nitric acid, hydrochloric acid, and their salts; the organophosphate compound (C) is selected from at least one of organophosphates having alkyl groups having 16 or more and 20 or fewer carbon atoms in the molecule, and their salts; the solvent (S) has a boiling point of 105°C or lower at atmospheric pressure.

[0029] Method 17 is a composition containing a third treatment agent of a third formulation for polyester synthetic fibers, characterized in that it contains the third treatment agent of a third formulation for polyester synthetic fibers as described in Method 16 and the solvent (S) described below; the solvent (S) has a boiling point of 105°C or less at atmospheric pressure.

[0030] Method 18 is a diluted solution of a treatment agent for polyester synthetic fibers, characterized in that it contains the treatment agent for polyester synthetic fibers described in any one of Methods 1 to 6, wherein the concentration of the treatment agent for polyester synthetic fibers is 0.1% by mass or more and 10% by mass or less.

[0031] Method 19 is a method for treating polyester synthetic fibers, the key point of which is to apply a diluted solution of a polyester synthetic fiber treatment agent to the polyester synthetic fibers in at least one of the spinning step, stretching step, and finishing step of the polyester synthetic fibers; wherein the diluted solution of the polyester synthetic fiber treatment agent is obtained by adding the polyester synthetic fiber treatment agent of any one of Methods 1 to 6 to water.

[0032] Method 20 is a method for treating polyester synthetic fibers, the key point of which is to apply a diluted solution of a polyester synthetic fiber treatment agent to the polyester synthetic fibers in at least one of the spinning step, stretching step, and finishing step of the polyester synthetic fibers; the diluted solution of the polyester synthetic fiber treatment agent is obtained by adding the composition containing the polyester synthetic fiber treatment agent described in Method 7 to water.

[0033] Method 21 is a method for treating polyester synthetic fibers, the key point of which is to apply a diluted solution of a polyester synthetic fiber treatment agent to the polyester synthetic fibers in at least one of the spinning, stretching, and finishing steps of the polyester synthetic fibers; the diluted solution of the polyester synthetic fiber treatment agent is obtained by adding the first treatment agent of the second formulation of polyester synthetic fibers described in Method 8, or the composition containing the first treatment agent of the second formulation of polyester synthetic fibers described in Method 9, the second treatment agent of the second formulation of polyester synthetic fibers described in Method 10, or the composition containing the second treatment agent of the second formulation of polyester synthetic fibers described in Method 11 to water.

[0034] Method 22 is a method for treating polyester synthetic fibers, the key point of which is: in at least one of the spinning, stretching, and finishing steps of the polyester synthetic fibers, a diluted solution of a polyester synthetic fiber treatment agent is applied to the polyester synthetic fibers; the diluted solution of the polyester synthetic fiber treatment agent is obtained by adding the polyester synthetic fiber type 3 treatment agent 1 of Method 12, or the composition containing the polyester synthetic fiber type 3 treatment agent 1 of Method 13, the polyester synthetic fiber type 3 treatment agent 2 of Method 14, or the composition containing the polyester synthetic fiber type 3 treatment agent 2 of Method 15, the polyester synthetic fiber type 3 treatment agent 3 of Method 16, or the composition containing the polyester synthetic fiber type 3 treatment agent 3 of Method 17 to water.

[0035] Method 23 is a polyester synthetic fiber, the key feature of which is that it is coated with a polyester synthetic fiber treatment agent as described in any of methods 1 to 6.

[0036] Invention Effects

[0037] According to the present invention, the emulsion stability when the synthetic fiber treatment agent is made into an aqueous dilution can be improved. Furthermore, the adhesiveness of the fiber surface treated with the synthetic fiber treatment agent can be reduced, and the reduction in fiber strength can be suppressed. Detailed Implementation

[0038] <First Embodiment>

[0039] The following describes a first embodiment of the treatment agent for polyester synthetic fibers (hereinafter referred to as the treatment agent) of the present invention. The treatment agent of this embodiment contains a (poly)oxyalkylene derivative (A), the following inorganic acid compound (B), and the following organophosphate compound (C), wherein a 1% by mass aqueous dilution of the treatment agent has a pH of 5.5 or higher and 8.5 or lower at 25°C.

[0040] ((poly)oxyalkylene derivative (A))

[0041] The (poly)oxyalkylene derivative (A) used in the treatment agent of this embodiment is used as a surfactant to improve the stability of the treatment agent, thereby improving the various functions of the treatment agent.

[0042] Examples of (poly)oxyalkylene derivatives (A) include compounds having a (poly)oxyalkylene structure formed by adding an epoxide to an alcohol or carboxylic acid; ether / ester compounds having a (poly)oxyalkylene structure formed by adding an epoxide to an ester compound formed by adding an epoxide to a carboxylic acid and a polyol; compounds having a (poly)oxyalkylene structure formed by adding an epoxide to an aliphatic amine compound; compounds having a (poly)oxyalkylene structure formed by adding an epoxide to a fatty acid amide; and block copolymers having a polyoxyethylene chain and a polyoxypropylene chain.

[0043] Among them, the preferred ones are polyoxyalkylene alkyl ethers, polyoxyalkylene alkenyl ethers, polyoxyalkylene alkyl esters, polyoxyalkylene alkenyl esters, polyoxyalkylene alkyl phenyl ethers, polyoxyalkylene polyol fatty acid esters, polyoxyalkylene alkylamines, and polyoxyalkylene alkenylamines.

[0044] Specific examples of alcohols used as raw materials for (poly)oxyalkylene derivatives (A) include, for example: (1) methanol, ethanol, propanol, butanol, pentanol, hexanol, octanol, nonanol, decanol, undecanol, dodecanol, tridecanol, tetradecanol, pentadecanol, hexadecanol, heptadecanol, octadecanol, nonadecanol, eicosane, dodecanol, dodecanol, tridecanol, tetradecanol, pentadecanol, hexadecanol, heptadecanol, octadecanol, nonadecanol, triadecanol, etc., straight-chain alkanols; (2) isopropanol, isobutanol, isohexanol, 2-ethylhexanol, isononol, isodecanol, isodecanol, isodecanol, isodecanol, isodecanol, isodecanol, etc. Branched alkanols such as isopentadecanol, isopentadecanol, isopentadecanol, isopentadecanol, isopentadecanol, isopentadecanol, isopentadecanol, isopentadecanol, isopentadecanol, isopentadecanol, isopentadecanol, isopentadecanol, isopentadecanol, isopentadecanol, isopentadecanol, isopentadecanol, isopentadecanol, isopentadecanol, etc.; (3) Straight-chain enols such as tetradecenol, hexadecenol, heptadecenol, octadecenol, nonadecanol, etc.; (4) Branched enols such as isopentadecanol, isopentadecanol, etc.; (5) Cyclic alkanols such as cyclopentanol, cyclohexanol, etc.; (6) Aromatic alcohols such as phenol, nonanol, benzyl alcohol, monostyrene, stilbene, tristyrene, etc.

[0045] Specific examples of carboxylic acids used as raw materials for (poly)oxyalkylene derivatives (A) include: (1) straight-chain 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, dodecanoic acid, etc.; (2) branched-chain alkyl carboxylic acids such as 2-ethylhexanoic acid, isododecanoic acid, isotridecanoic acid, isotetradecanoic acid, isohexadecanoic acid, etc.; (3) straight-chain alkenyl carboxylic acids such as octadecenoic acid, octadecadienoic acid, octadectrienoic acid, etc.; (4) aromatic carboxylic acids such as benzoic acid; (5) hydroxycarboxylic acids such as ricinoleic acid, etc.

[0046] The epoxide used as a raw material for forming the (poly)oxyalkylene structure in the (poly)oxyalkylene derivative (A) is preferably an epoxide with 2 or more and 4 or fewer carbon atoms. Specific examples of epoxides include ethylene oxide, propylene oxide, and butane oxide. The molar number of epoxides added can be appropriately set, preferably 0.1 moles or more and 250 moles or less, more preferably 1 mole or more and 200 moles or less, and most preferably 2 moles or more and 150 moles or less. It can also be any combination of the above upper and lower limits. Herein, the molar number of epoxides added represents the number of moles of epoxide relative to 1 mole of the target compound in the filling raw material. One type of epoxide can be used alone, or two or more epoxides can be used in combination appropriately. When two or more types of epoxides are used, their addition mode can be any of block addition, random addition, and a combination of block addition and random addition, without particular limitation.

[0047] Specific examples of polyols used as raw materials for (poly)oxyalkylene derivatives (A) include 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, glycerol, 2-methyl-2-hydroxymethyl-1,3-propanediol, trimethylolpropane, dehydrosorbitol, neopentyl tertrol, sorbitol, etc.

[0048] Examples of aliphatic amines used as raw materials for (poly)oxyalkylene derivatives (A) include methylamine, ethylamine, butylamine, octylamine, laurylamine, octadecylamine, octadeceneamine, and coconutamine.

[0049] Specific examples of fatty acid amides used as raw materials for (poly)oxyalkylene derivatives (A) include octanoic acid amide, lauryl amide, palmitamide, stearamide, oleamide, eugenol amide, and styracin amide.

[0050] Block copolymers containing polyoxyethylene and polyoxypropylene chains are not particularly limited as long as they have polyoxypropylene chains with low hydrophilicity and polyoxyethylene chains with high hydrophilicity and surface-active properties. The number of polyoxyethylene and polyoxypropylene chains in the molecule is not particularly limited; for example, it can be a block copolymer composed of one polyoxypropylene chain and one polyoxyethylene chain, or a poloxamer-based surfactant composed of a polyoxypropylene chain and two polyoxyethylene chains sandwiching that polyoxypropylene chain. Furthermore, it can also be an ether compound formed by the addition of polyoxyethylene and polyoxypropylene chains to a polyol. The number of moles of ethylene oxide forming the polyoxyethylene chain is not particularly limited; for example, it can be more than 5 moles and less than 200 moles. The number of moles of propylene oxide forming the polyoxypropylene chain is not particularly limited; for example, it can be more than 5 moles and less than 100 moles.

[0051] Specific examples of (poly)oxyalkylene derivatives (A) include compounds formed by the addition of ethylene oxide to decanol followed by the addition of propylene oxide; compounds formed by the addition of ethylene oxide to C12-13 branched alcohols; compounds formed by the random addition of ethylene oxide and propylene oxide to C12-13 branched alcohols; compounds formed by the random addition of ethylene oxide and propylene oxide to C11-14 alcohols; compounds formed by the random addition of ethylene oxide and propylene oxide to C12-13 branched alcohols followed by the addition of ethylene oxide and propylene oxide; compounds formed by the random addition of ethylene oxide and propylene oxide to tridecyl alcohol; compounds formed by the addition of propylene oxide to isodecanol followed by the addition of ethylene oxide; and compounds formed by the random addition of ethylene oxide and propylene oxide to isodecanol. Compounds, compounds formed by the addition of isotridecyl alcohol to ethylene oxide and then to propylene oxide, compounds formed by the addition of dodecyl alcohol to ethylene oxide, compounds formed by the reaction of dodecylamine with ethylene oxide, compounds formed by the addition of octadecyl alcohol to ethylene oxide, compounds formed by the addition of lauric acid to ethylene oxide, compounds formed by the addition of coconut alkylamine to ethylene oxide, compounds formed by the addition of diglycerol to propylene oxide and then to ethylene oxide, compounds formed by the addition of propylene glycol to propylene oxide and then to ethylene oxide, compounds formed by the addition of nonylphenol to ethylene oxide, compounds formed by the reaction of dodecylamine with ethylene oxide, and salts of phosphate, etc.

[0052] These (poly)oxyalkylene derivatives (A) can be used alone or in combination of two or more (poly)oxyalkylene derivatives.

[0053] In the treatment agent, the lower limit of the content of (poly)oxyalkylene derivative (A) is preferably 5% by mass or more, and more preferably 10% by mass or more. When the content of (poly)oxyalkylene derivative (A) is 5% by mass or more, the emulsification stability when the treatment agent is prepared as an aqueous dilution can be improved. Furthermore, the upper limit of the content of (poly)oxyalkylene derivative (A) is preferably 90% by mass or less, and more preferably 85% by mass or less. When the content of (poly)oxyalkylene derivative (A) is 90% by mass or less, the adhesiveness of the fiber surface to which the treatment agent is applied can be reduced. Any combination of the above upper and lower limits is also possible.

[0054] (Inorganic acid compound (B))

[0055] The inorganic acid compound (B) used in the treatment agent of this embodiment can include sulfuric acid, nitric acid, hydrochloric acid, and their salts. In particular, the reduction in the strength of the fiber to which the treatment agent has been applied can be suppressed by the inorganic acid compound (B).

[0056] Salts of inorganic acids are preferably neutral or acidic in aqueous solution, and more preferably acidic. Specific examples of salts of inorganic acids include sodium bisulfate, potassium bisulfate, potassium sulfate, sodium sulfate, and aluminum sulfate.

[0057] These inorganic acid compounds (B) can be used alone or in combination with two or more inorganic acid compounds.

[0058] In the treatment agent, the lower limit of the content of inorganic acid compound (B) is preferably 1% by mass or more, and more preferably 2% by mass or more. When the content of inorganic acid compound (B) is 1% by mass or more, the pH of the treatment agent can be adjusted to a suitable range, and the reduction in the strength of the fiber to which the treatment agent is imparted can be suppressed. Furthermore, the upper limit of the content of inorganic acid compound (B) is preferably 10% by mass or less, and more preferably 7% by mass or less. When the content of inorganic acid compound (B) is 10% by mass or less, the pH of the treatment agent can be adjusted to a suitable range, and the emulsification stability when the treatment agent is prepared as an aqueous dilution can be improved. In addition, the metal friction imparted by the treatment agent to the fiber during wetting can be reduced. Any combination of the above-mentioned upper and lower limits is also possible.

[0059] (Organophosphate compounds (C))

[0060] The organophosphate compound (C) used in the treatment agent of this embodiment can include organophosphates and their salts having alkyl groups having 16 or more and 20 or fewer carbon atoms in their molecules. By using the organophosphate compound (C), the adhesiveness of the fiber surface to which the treatment agent is applied can be reduced.

[0061] The alkyl groups constituting organophosphate compounds can be linear or branched. Specific examples of alkyl groups include hexadecyl, heptadecanyl, octadecyl, nonadecanyl, eicosyl, isohexadecanyl, isohexadecanyl, isooctadecyl, isononadecanyl, and isoeicosyl.

[0062] There are no particular restrictions on the phosphoric acid that constitutes organophosphate compounds; it can be orthophosphoric acid, diphosphoric acid, or other polyphosphoric acids. When applying the salts of organophosphates, examples of salts include phosphate amine salts, phosphate ammonium salts, and phosphate metal salts.

[0063] Examples of metal salts include alkali metal salts and alkaline earth metal salts. Specific examples of alkali metals that constitute alkali metal salts include sodium, potassium, and lithium. Alkaline earth metals that constitute alkaline earth metal salts include metals of Group 2 elements, such as calcium, magnesium, beryllium, strontium, and barium.

[0064] The amines that constitute amine salts can be any of the primary, secondary, and tertiary amines. Specific examples of amines that constitute amine salts include (1) aliphatic amines such as methylamine, dimethylamine, trimethylamine, ethylamine, diethylamine, triethylamine, N-N-diisopropylethylamine, butylamine, dibutylamine, 2-methylbutylamine, tributylamine, octylamine, and dimethyllauramine; (2) aromatic amines or heterocyclic amines such as aniline, N-methylbenzylamine, pyridine, morpholine, piperazine, and their derivatives; (3) alkylolamines such as monoethanolamine, N-methylethanolamine, diethanolamine, triethanolamine, isopropanolamine, diisopropanolamine, triisopropanolamine, dibutylethanolamine, butyl diethanolamine, octyl diethanolamine, and lauryl diethanolamine; (4) arylamines such as N-methylbenzylamine; and (5) polyoxyethylene laurylamine ethers such as polyoxyethylene stearylamine ether.

[0065] Specific examples of organophosphate compounds (C) include cetyl phosphate, cetyl phosphate salt, stearyl phosphate, stearyl phosphate salt, etc.

[0066] There is no particular limitation on the acid value of organophosphate compounds (C).

[0067] These organophosphate compounds (C) can be used alone or in combination with two or more organophosphate compounds.

[0068] In the treatment agent, the lower limit of the content of organophosphate compound (C) is preferably 5% by mass or more, more preferably 10% by mass or more, and most preferably 20% by mass. When the content of organophosphate compound (C) is 5% by mass or more, the adhesiveness of the fiber surface to which the treatment agent is applied can be reduced. Furthermore, the upper limit of the content of organophosphate compound (C) is preferably 90% by mass or less, more preferably 85% by mass or less, and most preferably 80% by mass or less. When the content of organophosphate compound (C) is 90% by mass or less, the emulsification stability when the treatment agent is prepared as an aqueous dilution can be improved. Any combination of the above upper and lower limits is also possible.

[0069] In the treatment agent, when the total content of the (poly)oxyalkylene derivative (A), inorganic acid compound (B), and organophosphate compound (C) is set to 100 parts by mass, it is preferable that the total content of the (poly)oxyalkylene derivative (A) and inorganic acid compound (B) is 20 parts by mass or more and 80 parts by mass or less, and the content of the organophosphate compound (C) is 20 parts by mass or more and 80 parts by mass or less. By defining it within this range, the effect of the present invention can be improved. The range can also be any combination of the above upper and lower limits.

[0070] (pH of the treatment agent)

[0071] The lower limit of the pH of a 1% by mass aqueous dilution of the treatment agent at 25°C is 5.5 or higher, preferably 5.6 or higher. When the pH is 5.5 or higher, the emulsification stability when the treatment agent is prepared as an aqueous dilution can be improved. The upper limit of the pH of a 1% by mass aqueous dilution of the treatment agent at 25°C is 8.5 or lower, preferably 8.3 or lower. When the pH is 8.5 or lower, the reduction in the strength of the fiber to which the treatment agent has been applied can be suppressed. Any combination of the above upper and lower limits is also possible.

[0072] (Save method)

[0073] The treatment agent can be configured as a dosage form 1 containing the above-mentioned components (A) to (C), or, from the viewpoint of improving the stability of the formulation, as shown below, as a dosage form 2 or a dosage form 3 treatment agent.

[0074] The treatment agent of formulation 2 comprises, in groups: a first treatment agent of formulation 2 for polyester synthetic fibers containing a (poly)oxyalkylene derivative (A) (hereinafter referred to as "the first treatment agent of formulation 2"), and a second treatment agent of formulation 2 for polyester synthetic fibers containing an organophosphate compound (C) (hereinafter referred to as "the second treatment agent of formulation 2"). Either or both of the first treatment agent of formulation 2 and the second treatment agent of formulation 2 contain an inorganic acid compound (B).

[0075] Before use, such as during storage or distribution, the two-dosage form treatment agent is prepared by separately preparing the first and second dosage form treatment agents as individual agents. When used, the first and second dosage form treatment agents are mixed to form a mixture.

[0076] The treatment agent of the 3-component formulation comprises, in groups: a 3-component first treatment agent for polyester synthetic fibers containing a (poly)oxyalkylene derivative (A) (hereinafter referred to as "3-component first treatment agent"), a 3-component second treatment agent for polyester synthetic fibers containing an organophosphate compound (C) (hereinafter referred to as "3-component second treatment agent"), and a 3-component third treatment agent for polyester synthetic fibers containing an inorganic acid compound (B) (hereinafter referred to as "3-component third treatment agent").

[0077] Before use, such as during storage or distribution, the three dosage form treatment agents are prepared by combining the first, second, and third dosage form treatment agents as independent agents. When used, the first, second, and third dosage form treatment agents are mixed to form a mixture.

[0078] (solvent)

[0079] The treatment agent of this embodiment can also be mixed with a solvent as appropriate to prepare a composition containing a treatment agent for polyester synthetic fibers (hereinafter referred to as "the composition containing the treatment agent"), and stored or distributed as a composition containing the treatment agent.

[0080] The solvent has a boiling point below 105°C at atmospheric pressure. Atmospheric pressure in this specification refers to standard atmospheric pressure (101325 Pa = 1 atm). Examples of solvents include water and organic solvents. Specific examples of organic solvents include lower alcohols such as ethanol and propanol, or low-polarity solvents such as hexane. These solvents can be used alone or in appropriate combinations 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, while water is more preferred from the viewpoint of excellent operability.

[0081] In a composition containing a treatment agent, when the total proportion of the treatment agent and the solvent is set to 100 parts by mass, it is preferable to contain 10 parts by mass or more of the treatment agent.

[0082] The effects of the treatment agent in the first embodiment will be explained.

[0083] (1-1) The treatment agent of the first embodiment described above contains (poly)oxyalkylene derivative (A), the inorganic acid compound (B), and the organic phosphate compound (C), and the pH of a 1% by mass aqueous dilution of the treatment agent is adjusted to 5.5 or more and 8.5 or less at 25°C.

[0084] Therefore, it can improve the emulsification stability when the treatment agent is made into an aqueous dilution. This reduces the formation of precipitates and / or sediments from the emulsion and minimizes fiber quality inconsistencies caused by uneven adhesion of the treatment agent. Furthermore, it reduces the adhesiveness of the fiber surface treated with the treatment agent and inhibits the reduction of fiber strength. This, in turn, reduces inconsistencies in the quality of processed products caused by poor process flow.

[0085] Furthermore, it can reduce metal-to-metal friction when the treatment agent wets the fiber. This, in turn, can improve manufacturing efficiency.

[0086] (1-2) The treatment agent of the first embodiment described above can also be configured to include, in a group, a first treatment agent of two dosage forms containing a (poly)oxyalkylene derivative (A), and a second treatment agent of two dosage forms containing an organophosphate compound (C). Either or both of the first and second treatment agents of two dosage forms contain an inorganic acid compound (B). According to this configuration, the formulation stability, particularly storage stability, of the treatment agent can be improved.

[0087] (1-3) The treatment agent of the first embodiment described above can also be configured to include, in a group, a first treatment agent of a 3-dosage form containing a (poly)oxyalkylene derivative (A), a second treatment agent of a 3-dosage form containing an organophosphate compound (C), and a third treatment agent of a 3-dosage form containing an inorganic acid compound (B). According to this configuration, the formulation stability of the treatment agent, particularly its storage stability, can be improved.

[0088] <Second Implementation>

[0089] Next, a second embodiment embodying the first treatment agent of the two dosage forms of the present invention will be described, focusing on the differences from the embodiments described above.

[0090] The first treatment agent of the second formulation in this embodiment contains a (poly)oxyalkylene derivative (A). The first treatment agent of the second formulation is used in conjunction with a second treatment agent of the second formulation or a composition containing a second treatment agent of the second formulation for polyester synthetic fibers (hereinafter referred to as "the composition containing the second treatment agent of the second formulation"), wherein the second treatment agent of the second formulation contains an organophosphate compound (C), and the composition containing the second treatment agent of the second formulation contains the second treatment agent of the second formulation and a solvent (S). Either or both of the first and second treatment agents of the second formulation contain an inorganic acid compound (B). Furthermore, when the mixture of the first and second treatment agents of the second formulation is provided as a 1% by mass aqueous dilution of the treatment agent, the pH at 25°C is in the range of 5.5 or higher and 8.5 or lower.

[0091] When the mixture of the first treatment agent of the two dosage forms and the second treatment agent of the two dosage forms is a composition containing the second treatment agent of the two dosage forms (wherein the solvent (S) is water), the pH is determined by the following method.

[0092] When the mixture of the first treatment agent of the two formulations and the second treatment agent of the two formulations is a water dilution of more than 1% by mass of the treatment agent, the mixture is first diluted to a water dilution of 1% by mass of the treatment agent, and then the pH is measured at 25°C.

[0093] When the mixture of the first treatment agent of the two formulations and the second treatment agent of the two formulations is a water dilution of less than 1% by mass of the treatment agent, the mixture is first dried or concentrated into a water dilution of 1% by mass of the treatment agent, and then the pH is measured at 25°C.

[0094] When the mixture of the first treatment agent of the two dosage forms and the second treatment agent of the two dosage forms is used in a composition containing the second treatment agent of the two dosage forms (wherein the solvent (S) includes a solvent other than water), the pH is determined by the following method.

[0095] The solvent was removed from the mixture of the first and second treatment agents of the two formulations, and then the mixture was diluted with water to a 1% by mass concentration of the treatment agent, and the pH was measured at 25°C. Solvent removal from the mixture could be carried out by heat-treating the mixture at 105°C for 2 hours.

[0096] The (poly)oxyalkylene derivative (A), inorganic acid compound (B), organic phosphate compound (C), and solvent (S) are the same as those described in Embodiment 1.

[0097] (solvent)

[0098] The second formulation first treatment agent of this embodiment can also be mixed with a solvent as appropriate to prepare a composition containing the second formulation first treatment agent for polyester synthetic fibers (hereinafter referred to as "composition containing the second formulation first treatment agent"), and stored or distributed as a composition containing the second formulation first treatment agent.

[0099] The solvent can be any as exemplified in the first embodiment. In the composition containing the two dosage forms of the first treatment agent, when the total content ratio of the two dosage forms of the first treatment agent and the solvent is set to 100 parts by mass, it is preferable to contain 10 parts by mass or more of the two dosage forms of the first treatment agent.

[0100] The effects of the first treatment agent in the second dosage form of the second embodiment will be explained. In addition to the effects of the embodiments described above, the second embodiment also has the following effects.

[0101] (2-1) The first treatment agent of the second dosage form contains a (poly)oxyalkylene derivative (A), and is used in combination with the second treatment agent of the second dosage form containing an organophosphate compound (C). Therefore, the formulation stability, particularly storage stability, of the first treatment agent of the second dosage form can be improved. Furthermore, by adjusting the mixing ratio with the second treatment agent of the second dosage form, the composition of the resulting treatment agent can be adjusted. Moreover, the first treatment agent of the second dosage form and the second treatment agent of the second dosage form can be distributed separately.

[0102] <Third Implementation>

[0103] Next, a third embodiment embodying the second treatment agent of the two dosage forms of the present invention will be described, focusing on the differences from the embodiments described above.

[0104] The second treatment agent of this embodiment contains an organophosphate compound (C). When used, the second treatment agent is used in conjunction with the first treatment agent of the second dosage form or a composition containing the first treatment agent of the second dosage form, wherein the first treatment agent of the second dosage form contains a (poly)oxyalkylene derivative (A), and the composition containing the first treatment agent of the second dosage form contains the first treatment agent of the second dosage form and a solvent (S). Either or both of the first and second treatment agents of the second dosage form contain an inorganic acid compound (B). Furthermore, when the mixture of the first and second treatment agents of the second dosage form is a 1% by mass aqueous dilution of the treatment agent, the pH at 25°C is in the range of 5.5 or higher and 8.5 or lower. Additionally, when the mixture of the first and second treatment agents of the second dosage form is used with a composition containing the first treatment agent of the second dosage form (with solvent (S) used), the pH is measured using the same method as described in the second embodiment.

[0105] The (poly)oxyalkylene derivative (A), inorganic acid compound (B), organic phosphate compound (C), and solvent (S) are the same as those described in Embodiment 1.

[0106] (solvent)

[0107] The second treatment agent of the second dosage form in this embodiment can also be mixed with a solvent as appropriate to prepare a composition containing the second treatment agent of the second dosage form, and stored or distributed as a composition containing the second treatment agent of the second dosage form.

[0108] The solvent can be any of those exemplified in the first embodiment. In the composition containing the second treatment agent of two dosage forms, when the total content ratio of the second treatment agent of two dosage forms and the solvent is set to 100 parts by mass, it is preferable to contain 10 parts by mass or more of the first treatment agent of two dosage forms.

[0109] The effects of the second treatment agent in the second dosage form of the third embodiment will be explained. In addition to the effects of the embodiments described above, the third embodiment also has the following effects.

[0110] (3-1) The second treatment agent of the second dosage form in the third embodiment contains an organophosphate compound (C), and is used in combination with the first treatment agent of the second dosage form containing a (poly)oxyalkylene derivative (A). Therefore, the formulation stability, especially the storage stability, of the second treatment agent of the second dosage form can be improved. Furthermore, by adjusting the mixing ratio with the first treatment agent of the second dosage form, the composition of the resulting treatment agent can be adjusted. In addition, the second treatment agent of the second dosage form and the first treatment agent of the second dosage form can be distributed separately.

[0111] <Fourth Implementation>

[0112] Next, a fourth embodiment embodying the first treatment agent of the three dosage forms of the present invention will be described, focusing on the differences from the embodiments described above.

[0113] The first treatment agent of the 3-dosage formulation in this embodiment contains a (poly)oxyalkylene derivative (A). When used, the first treatment agent of the 3-dosage formulation is used in conjunction with a second treatment agent of the 3-dosage formulation or a composition containing a second treatment agent of the 3-dosage formulation for polyester synthetic fibers (hereinafter referred to as "the composition containing the second treatment agent of the 3-dosage formulation"), and a third treatment agent of the 3-dosage formulation or a composition containing a third treatment agent of the 3-dosage formulation for polyester synthetic fibers (hereinafter referred to as "the composition containing the third treatment agent of the 3-dosage formulation"), wherein the second treatment agent of the 3-dosage formulation contains an organophosphate compound (C), the composition containing the second treatment agent of the 3-dosage formulation contains the second treatment agent of the 3-dosage formulation and a solvent (S), the third treatment agent of the 3-dosage formulation contains an inorganic acid compound (B), and the composition containing the third treatment agent of the 3-dosage formulation contains the third treatment agent of the 3-dosage formulation and a solvent (S).

[0114] When the mixture of the first, second, and third formulations of the treatment agent is used as a 1% by mass aqueous dilution of the treatment agent, the pH at 25°C is in the range of 5.5 or higher and 8.5 or lower. When the mixture of the first, second, and third formulations of the treatment agent is a composition containing the second formulation or a composition containing the third formulation (using solvent (S)), the pH is determined by the same method as described in the second embodiment.

[0115] The (poly)oxyalkylene derivative (A), inorganic acid compound (B), organic phosphate compound (C), and solvent (S) are the same as those described in Embodiment 1.

[0116] (solvent)

[0117] The first treatment agent of the third dosage form in this embodiment can also be mixed with a solvent (S) as appropriate to prepare a composition containing the first treatment agent of the third dosage form for polyester synthetic fibers (hereinafter referred to as "the composition containing the first treatment agent of the third dosage form"), and stored or distributed as a composition containing the first treatment agent of the third dosage form.

[0118] The solvent (S) can be the one exemplified in the first embodiment. In the composition containing the first treatment agent of the three dosage forms, when the total content ratio of the first treatment agent of the three dosage forms and the solvent is set to 100 parts by mass, it is preferable to contain 10 parts by mass or more of the first treatment agent of the three dosage forms.

[0119] The effects of the first treatment agent in the three dosage forms of the fourth embodiment will be explained. In addition to the effects of the embodiments described above, the fourth embodiment also has the following effects.

[0120] (4-1) The first treatment agent of the third dosage form in the fourth embodiment contains a (poly)oxyalkylene derivative (A), and is used in combination with the second treatment agent of the third dosage form containing an organophosphate compound (C) and the third treatment agent of the third dosage form containing an inorganic acid compound (B). Therefore, the formulation stability of the first treatment agent of the third dosage form can be improved, especially its storage stability. Furthermore, by adjusting the mixing ratio with the second and third treatment agents of the third dosage form, the composition of the resulting treatment agent can be adjusted. In addition, the first treatment agent of the third dosage form and the second and third treatment agents of the third dosage form can be distributed separately.

[0121] <Fifth Implementation>

[0122] Next, a fifth embodiment embodying the second treatment agent of the three dosage forms of the present invention will be described, focusing on the differences from the embodiments described above.

[0123] The second treatment agent of the third dosage form in this embodiment contains an organophosphate compound (C). When used, the second treatment agent of the third dosage form is used in conjunction with the first treatment agent of the third dosage form or a composition containing the first treatment agent of the third dosage form, and with the third treatment agent of the third dosage form or a composition containing the third treatment agent of the third dosage form. The first treatment agent of the third dosage form contains a (poly)oxyalkylene derivative (A), the composition containing the first treatment agent of the third dosage form contains the first treatment agent of the third dosage form and a solvent (S), the third treatment agent of the third dosage form contains an inorganic acid compound (B), and the composition containing the third treatment agent of the third dosage form contains the third treatment agent of the third dosage form and a solvent (S).

[0124] When the mixture of the first, second, and third formulations of the treatment agent is used as a 1% by mass aqueous dilution of the treatment agent, the pH at 25°C is in the range of 5.5 or higher and 8.5 or lower. When the mixture of the first, second, and third formulations of the treatment agent is a composition containing the first formulation of the treatment agent or a composition containing the third formulation of the treatment agent (using solvent (S)), the pH is determined by the same method as described in the second embodiment.

[0125] The (poly)oxyalkylene derivative (A), inorganic acid compound (B), organic phosphate compound (C), and solvent (S) are the same as those described in Embodiment 1.

[0126] (solvent)

[0127] The third dosage form second treatment agent of this embodiment can also be mixed with solvent (S) as appropriate to prepare a composition containing the third dosage form second treatment agent, and stored or distributed as a composition containing the third dosage form second treatment agent.

[0128] The solvent (S) can be the one exemplified in the first embodiment. In the composition containing the third dosage form second treatment agent, when the total content ratio of the third dosage form second treatment agent and the solvent is set to 100 parts by mass, it is preferable to contain 10 parts by mass or more of the third dosage form second treatment agent.

[0129] The effects of the second treatment agent in the three dosage forms of the fifth embodiment will be explained. In addition to the effects of the embodiments described above, the fifth embodiment also has the following effects.

[0130] (5-1) The second treatment agent of the third dosage form in the fifth embodiment contains an organophosphate compound (C), and is used in combination with the first treatment agent of the third dosage form containing a (poly)oxyalkylene derivative (A) and the third treatment agent of the third dosage form containing an inorganic acid compound (B). Therefore, the formulation stability, especially the storage stability, of the second treatment agent of the third dosage form can be improved. Furthermore, by adjusting the mixing ratio with the first and third treatment agents of the third dosage form, the composition of the resulting treatment agent can be adjusted. In addition, the second treatment agent of the third dosage form can be distributed separately from the first and third treatment agents of the third dosage form.

[0131] <Sixth Implementation>

[0132] Next, a sixth embodiment embodying the third treatment agent of the three dosage forms of the present invention will be described, focusing on the differences from the embodiments described above.

[0133] The third treatment agent of the third dosage form in this embodiment contains an inorganic acid compound (B). When used, the third treatment agent of the third dosage form is used in conjunction with the first treatment agent of the third dosage form or a composition containing the first treatment agent of the third dosage form, and with the second treatment agent of the third dosage form or a composition containing the second treatment agent of the third dosage form. The first treatment agent of the third dosage form contains a (poly)oxyalkylene derivative (A), the composition containing the first treatment agent of the third dosage form contains the first treatment agent of the third dosage form and a solvent (S), the second treatment agent of the third dosage form contains an organophosphate compound (C), and the composition containing the second treatment agent of the third dosage form contains the second treatment agent of the third dosage form and a solvent (S).

[0134] When the mixture of the first, second, and third formulations of the treatment agent is used as a 1% by mass aqueous dilution of the treatment agent, the pH at 25°C is in the range of 5.5 or higher and 8.5 or lower. When the mixture of the first, second, and third formulations of the treatment agent is a composition containing the first formulation of the treatment agent or a composition containing the second formulation of the treatment agent (using solvent (S)), the pH is determined by the same method as described in the second embodiment.

[0135] The (poly)oxyalkylene derivative (A), inorganic acid compound (B), organic phosphate compound (C), and solvent (S) are the same as those described in Embodiment 1.

[0136] (solvent)

[0137] The third treatment agent of the third dosage form in this embodiment can also be mixed with solvent (S) as appropriate to prepare a composition containing the third treatment agent of the third dosage form, and stored or distributed as a composition containing the third treatment agent of the third dosage form.

[0138] The solvent (S) can be the one exemplified in the first embodiment. In the composition containing the third treatment agent of the third dosage form, when the total content ratio of the third treatment agent of the third dosage form and the solvent is set to 100 parts by mass, it is preferable to contain 10 parts by mass or more of the third treatment agent of the third dosage form.

[0139] The effects of the third treatment agent in the third dosage form of the sixth embodiment will be explained. In addition to the effects of the embodiments described above, the sixth embodiment also has the following effects.

[0140] (6-1) The third treatment agent of the third dosage form in the sixth embodiment contains an inorganic acid compound (B), and is used in combination with the first treatment agent of the third dosage form containing a (poly)oxyalkylene derivative (A) and the second treatment agent of the third dosage form containing an organophosphate compound (C). Therefore, the formulation stability, especially the storage stability, of the third treatment agent of the third dosage form can be improved. Furthermore, by adjusting the mixing ratio with the first and second treatment agents of the third dosage form, the composition of the resulting treatment agent can be adjusted. In addition, the third treatment agent of the third dosage form can be distributed separately from the first and second treatment agents of the third dosage form.

[0141] <Seventh Implementation>

[0142] Next, a seventh embodiment that embodies the method for processing polyester synthetic fibers of the present invention (hereinafter referred to as the "fiber processing method") will be described.

[0143] When the treatment agent is a formulation 1, the fiber treatment method of this embodiment is characterized by applying a diluted solution containing a solvent and the treatment agent of the first embodiment to the polyester synthetic fiber. Examples of methods for preparing the diluted solution include, for instance, adding the treatment agent of the first embodiment or a composition containing the treatment agent to a solvent. Preferably, the diluted solution is prepared by adding the treatment agent of the first embodiment or a composition containing the treatment agent to water.

[0144] When the treatment agent is a two-component formulation, the fiber treatment method of this embodiment is characterized by applying a diluted solution of a treatment agent containing a solvent, a two-component formulation first treatment agent of the second embodiment, and a two-component formulation second treatment agent of the third embodiment to the polyester synthetic fiber. Examples of methods for preparing the diluted solution include adding the two-component formulation first treatment agent or a composition containing the two-component formulation first treatment agent, and the two-component formulation second treatment agent or a composition containing the two-component formulation second treatment agent to a solvent. Preferably, the diluted solution is prepared by adding the two-component formulation first treatment agent or a composition containing the two-component formulation first treatment agent, and the two-component formulation second treatment agent or a composition containing the two-component formulation second treatment agent to water. The preferred ratio between the two-component formulation first treatment agent and the two-component formulation second treatment agent is the mass ratio of non-volatile components, i.e., two-component formulation first treatment agent / two-component formulation second treatment agent = 95 / 5 to 5 / 95. By defining this range, operability can be improved. In this specification, non-volatile components refer to the residue after the object has been heat-treated at 105°C for 2 hours to remove volatile substances, which is the absolutely dry matter.

[0145] When the treatment agent is a type 3 agent, the fiber treatment method of this embodiment is characterized by applying a diluted solution of the treatment agent, comprising a solvent, the type 3 first treatment agent of the fourth embodiment, the type 3 second treatment agent of the fifth embodiment, and the type 3 third treatment agent of the sixth embodiment, to the polyester synthetic fiber. Examples of methods for preparing the diluted solution include, for instance, adding the type 3 first treatment agent or a composition containing the type 3 first treatment agent, the type 3 second treatment agent or a composition containing the type 3 second treatment agent, and the type 3 third treatment agent or a composition containing the type 3 third treatment agent to a solvent. Preferably, the diluted solution is prepared by adding the type 3 first treatment agent or a composition containing the type 3 first treatment agent, the type 3 second treatment agent or a composition containing the type 3 second treatment agent, and the type 3 third treatment agent or a composition containing the type 3 third treatment agent to water.

[0146] The solvent used to manufacture the diluent can be exemplified by that described in the first embodiment. From the viewpoint of operability, the diluent is preferably of a concentration of 0.1% by mass or more and 10% by mass or less for the treatment agent.

[0147] The mixing ratio of each agent can be arbitrarily changed in the combination of the first and second treatment agents of type 2, or the combination of the first, second, and third treatment agents of type 3. Therefore, even under different manufacturing conditions such as different manufacturing equipment or different climates (temperature, humidity, etc.), the optimal treatment agent or diluent for imparting fiber properties or fiber manufacturing properties can be easily prepared by fine-tuning the mixing ratio.

[0148] For emulsifying agents, the agents or compositions containing the agents can be mixed with solvents and stirred using known mixers, such as homogenizers, homogenizers, gel mills, linear mixers, etc.

[0149] The fiber treatment method is, for example, to apply the diluted solution obtained in the above manner to the fiber in at least one of the spinning, stretching and finishing steps of polyester synthetic fibers.

[0150] Fibers that are given a diluent include polyester synthetic fibers. Specific examples of polyester synthetic fibers include polyethylene terephthalate (PET), polyethylene terephthalate, polyethylene terephthalate, polyethylene naphthalate, polylactic acid, and composite fibers formed containing these polyester resins.

[0151] The uses of the fiber are not particularly limited, and examples include those for spinning, spinning manufacturing, staple fiber, long fiber, nonwoven fabric, and filling cotton. Staple fiber generally refers to fibers called "staple" and does not include long fibers called "filament". Furthermore, the length of the staple fiber is not particularly limited as long as it meets the definition of staple fiber in this technical field, for example, 100 mm or less. Among these, the diluent of the present invention is preferably suitable for polyester staple fibers and polyester synthetic fibers for spinning manufacturing.

[0152] There are no particular limitations on the proportion of the diluent adhering to the fiber, but it is preferable that the final solid content is 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 this composition, the performance of each component can be effectively utilized. Furthermore, there are no particular limitations on the method of adhering the diluent; known methods can be used depending on the type of fiber, method, and application, such as roller oiling, guided oiling using a metering pump, impregnation oiling, and spray oiling. When using the impregnation oiling method, the impregnation time is preferably 1 minute or more and 5 minutes or less.

[0153] The fibers treated with the diluent can also be dried or heated using known methods. By drying or heating, solvents such as water are evaporated, thereby obtaining fibers with the treatment agent or components contained in the first, second, and third treatment agents.

[0154] The effects of the fiber processing method according to the seventh embodiment will be explained. In addition to the effects of the embodiments described above, the seventh embodiment also has the following effects.

[0155] (7-1) The fiber treatment method of the seventh embodiment is, for example, a method of imparting a diluent to the fiber in a spinning step, a stretching step, or a finishing step. In particular, by adding the treatment agent of the first embodiment or a composition containing the treatment agent to water for preparation, a diluent with excellent emulsification stability can be obtained. Alternatively, by adding a second-type first treatment agent or a composition containing a second-type first treatment agent and a second-type treatment agent or a composition containing a second-type second treatment agent to water for preparation, a diluent with excellent emulsification stability can be obtained. Alternatively, by adding a third-type first treatment agent or a composition containing a third-type first treatment agent, a third-type second treatment agent or a composition containing a third-type second treatment agent, and a third-type third treatment agent or a composition containing a third-type third treatment agent to water for preparation, a diluent with excellent emulsification stability can be obtained. Therefore, the efficiencies of each component for spinning, spinning manufacturing, short fibers, long fibers, nonwoven fabrics, filling cotton, etc., can be effectively utilized.

[0156] The above-described embodiments can also be modified as follows. The above-described embodiments and the following modifications can be combined and implemented with each other within the scope of technical non-contradiction.

[0157] • The method for preparing the diluent of the treatment agent in the above embodiments is not particularly limited, and other methods besides the preparation method described in the 7th embodiment may also be used.

[0158] • Without impairing the effects of the present invention, the treatment agents, compositions, or diluents described in the above embodiments may be further mixed with other components to maintain the quality of the treatment agents, compositions, or diluents, such as other solvents, stabilizers, antistatic agents, binders, antioxidants, ultraviolet absorbers, organic acids, surfactants other than those mentioned above, and other components commonly used in treatment agents. From the viewpoint of effectively utilizing the performance of the present invention, it is preferable that other components other than solvents, which are commonly used in treatment agents, are 10% by mass or less in each treatment agent. Furthermore, these other components may be stored separately from the aforementioned treatment agents.

[0159] Example

[0160] The following embodiments are provided to illustrate the structure and effects of the present invention in more detail, but the present invention is not limited to these embodiments. Unless otherwise specified, in the following embodiments and comparative examples, parts represent parts by mass, and % represents percentages by mass.

[0161] Test Category 1 (Preparation of Formulation Treatment Agent)

[0162] (Example 1-1)

[0163] As shown in Table 1, the treatment agent of Example 1-1 was prepared, comprising about 67.2 parts (%) of the (poly)oxyalkylene derivative (A-1) shown in Table 2 as (poly)oxyalkylene derivative (A), about 3.9 parts (%) of sulfuric acid (B-1) as inorganic acid compound (B), about 28.8 parts (%) of stearyl phosphate and its potassium salt (C-4) as organophosphate compound (C), and 1 part of amino-modified polydimethylsiloxane (D-2) as other component (D) (totaling 100 parts relative to components (A) to (C)).

[0164] (Examples 1-2 to 1-21, Comparative Examples 1-1 to 1-9)

[0165] The treatment agents of Examples 1-2 to 1-21 and Comparative Examples 1-1 to 1-9 were prepared in the same manner as the treatment agent of Example 1-1, and contained (poly)oxyalkylene derivatives (A), inorganic acid compounds (B), organophosphate compounds (C), and other components (D) in the proportions shown in Table 1.

[0166] The types and contents of (poly)oxyalkylene derivatives (A), inorganic acid compounds (B), organophosphate compounds (C), and other components (D) are shown in the columns “(poly)oxyalkylene derivatives (A)”, “Inorganic acid compounds (B)”, “Organophosphate compounds (C)”, and “Other components (D)” of Table 1, respectively. The content of other components (D) indicates the mixing amount (parts) when the total content of (poly)oxyalkylene derivatives (A), inorganic acid compounds (B), and organophosphate compounds (C) in the treatment agent is set to 100 parts.

[0167] (pH of the treatment agent)

[0168] Each treatment agent was diluted with warm water at approximately 70°C to prepare a 1% aqueous dilution. The pH of the prepared 1% aqueous dilution was measured at 25°C. The measured values ​​are shown in the "pH of 1% aqueous dilution" column of Table 1.

[0169] [Table 1]

[0170]

[0171] The details of the (poly)oxyalkylene derivatives (A), inorganic acid compounds (B), organophosphate compounds (C), and other components (D) listed in Table 1 are as follows.

[0172] ((poly)oxyalkylene derivative (A))

[0173] Use A-1 to A-18 as shown in Table 2 below.

[0174] [Table 2]

[0175]

[0176] The details of components 1 to 25 shown in Table 2 are as follows.

[0177] Component 1: A compound formed by adding 1 mole of p-decanol to 2 moles of ethylene oxide, followed by the addition of 5 moles of propylene oxide.

[0178] Component 2: A compound formed by adding 1 mole of C12-13 branched alcohol to 10 moles of ethylene oxide.

[0179] Component 3: A compound formed by the random addition of 1 mole of a C12-13 branched alcohol to 6 moles of ethylene oxide and 2 moles of propylene oxide.

[0180] Component 4: A compound formed by the random addition of 1 mole of C11-14 alcohols to 4 moles of ethylene oxide and 4 moles of propylene oxide.

[0181] Component 5: A compound formed by the random addition of 1 mole of C12-13 branched alcohol to 4 moles of ethylene oxide and 2 moles of propylene oxide, followed by the addition of another 2 moles of ethylene oxide.

[0182] Component 6: A compound formed by the random addition of 1 mole of tridecaneol to 6 moles of ethylene oxide and 2 moles of propylene oxide.

[0183] Component 7: A compound formed by adding 3 moles of propylene oxide to 1 mole of isodecanol, followed by adding 4 moles of ethylene oxide.

[0184] Component 8: A compound formed by the random addition of 1 mole of p-isodecyl alcohol to 5 moles of ethylene oxide and 2 moles of propylene oxide.

[0185] Component 9: A compound formed by adding 5 moles of ethylene oxide to 1 mole of isotracene alcohol, followed by adding 5 moles of propylene oxide.

[0186] Component 10: A compound formed by adding 4 moles of ethylene oxide to 1 mole of dodecyl alcohol. Component 11: A compound formed by adding 7 moles of ethylene oxide to 1 mole of dodecyl alcohol. Component 12: A compound formed by adding 10 moles of ethylene oxide to 1 mole of dodecyl alcohol.

[0187] Component 13: A compound formed by adding 5 moles of ethylene oxide to 1 mole of dodecyl alcohol, followed by adding 5 moles of propylene oxide.

[0188] Component 14: A compound formed by the reaction of 1 mole of dodecaneamine with 10 moles of ethylene oxide. Component 15: A compound formed by the reaction of 1 mole of dodecaneamine with 12 moles of ethylene oxide. Component 16: A compound formed by the reaction of 1 mole of dodecaneamine with 15 moles of ethylene oxide. Component 17: A compound formed by adding 1 mole of octadecyl alcohol to 10 moles of ethylene oxide. Component 18: A compound formed by adding 1 mole of lauric acid to 10 moles of ethylene oxide. Component 19: A compound formed by adding 1 mole of coconut alkylamine to 10 moles of ethylene oxide. Component 20: A compound formed by adding 1 mole of coconut alkylamine to 15 moles of ethylene oxide.

[0189] Component 22: A compound formed by adding 1 mole of diglycerol to 84 moles of propylene oxide, followed by the addition of 23 moles of ethylene oxide.

[0190] Component 23: A compound formed by adding 43 moles of propylene oxide to 1 mole of propylene glycol, followed by adding 6 moles of ethylene oxide.

[0191] Component 24: A compound formed by the addition of 1 mole of nonylphenol to 10 moles of ethylene oxide.

[0192] Component 25: A compound formed by the reaction of 1 mole of dodecaneamine with 10 moles of ethylene oxide and a salt of phosphate.

[0193] (Inorganic acid compound (B))

[0194] B-1: Sulfuric acid

[0195] B-2: Nitric acid

[0196] B-3: Hydrochloric acid

[0197] B-4: Potassium bisulfate

[0198] B-5: Potassium sulfate

[0199] (Organophosphate compounds (C))

[0200] Use compounds C-1 to C-10 as listed in Table 3 below. Use compounds rc-1 and rc-2 as comparative examples. The organophosphate compounds (C) listed in Table 3 below are various organophosphates that have been partially neutralized with KOH, i.e., mixtures of organophosphates and potassium salts of organophosphates. The same applies to organophosphate compounds D-6 and D-8, which will be described later.

[0201] [Table 3]

[0202]

[0203] The method for determining the acid value of organophosphate compounds (C) is as follows.

[0204] The organophosphate compound (C) was 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 using a potentiometric titration method. The following value was calculated. The results are shown in the "Acid Value Detected from Organophosphate Compound (C)" column of Table 3.

[0205] [Number 1]

[0206]

[0207] In number 1,

[0208] f represents the factor for a 0.1 mol / L potassium hydroxide methanol standard solution.

[0209] S represents the amount (g) of the organophosphate compound (C).

[0210] R represents the volume (mL) of 0.1 mol / L potassium hydroxide methanol standard solution used up to the inversion point.

[0211] (Other ingredients (D))

[0212] D-1: Polydimethylsiloxane

[0213] D-2: Amino-modified polydimethylsiloxane

[0214] D-3: Potassium oleate

[0215] D-4: Polyvinyl alcohol (average degree of polymerization 300, degree of saponification 80)

[0216] D-5: Stearyl alcohol

[0217] D-6: Hexyl phosphate and its potassium salt (acid value 10.0 [KOH-mg / g])

[0218] D-7: Potassium lactate

[0219] D-8(rc-1): Octyl phosphate and its potassium salt (acid value 27.5 [KOH-mg / g])

[0220] Test Category 2 (Metal Friction in Wet Conditions)

[0221] Each treatment agent prepared for Test Category 1 was diluted with warm water at approximately 70°C to prepare a 5% dilution. 80 mL of the prepared 5% dilution was poured into a metal tank (60 mm long × 230 mm wide × 20 mm high) and fixed in place. A piece of polyester spunbond nonwoven fabric of the same size (30 mm long × 90 mm wide × 45 mm high) was attached to the bottom surface of a 1 kg weight (30 mm long × 90 mm wide × 45 mm high). The weight with the nonwoven fabric attached was placed in the metal tank containing the dilution. The tension of each test specimen was measured using a tensile testing machine (Shimadzu Corporation, Autograph: AGS-X) equipped with a force gauge with a maximum load capacity of 50 N, under horizontal tension at a speed of 100 mm / min in an atmosphere of 20°C-60% RH. From the viewpoint of reproducibility or accuracy, friction was measured within 12 hours of preparing the 5% dilution. The results are shown in the "Metal Friction under Wet Conditions" column of Table 1. The "-" in Table 1 was not evaluated because it did not contain component B (i.e., inorganic acid compound (B)).

[0222] Evaluation criteria for metal friction in wet conditions

[0223] ◎(Good): The ratio of friction N (without component B) to friction M (during measurement) is M / N ≦ 0.98

[0224] × (Defective): The ratio of friction N (without component B) to friction M (during measurement) is M / N > 0.98.

[0225] Test Category 3 (Adhesion)

[0226] Pour 5g of each treatment agent prepared in Test Category 1 into a glass petri dish (9.5cm inner diameter). The treatment agent will then spread evenly within the glass petri dish. Adjust the temperature to 30°C and 70% RH for 24 hours, visually confirming the appearance of the temperature-adjusted treatment agent, and evaluate it using the following criteria. The results are shown in the "Adhesion" column of Table 1.

[0227] • Evaluation criteria for adhesion

[0228] ◎(Good): After temperature adjustment, it appears as a solid and does not feel sticky to the touch.

[0229] ○ (Pass): After temperature adjustment, the product appears solid and feels sticky to the touch.

[0230] × (Defective): After temperature adjustment, the product appears as a liquid or gel and feels sticky to the touch.

[0231] Test Category 4 (Fiber Strength)

[0232] Each treatment agent prepared for Test Category 1 was diluted with warm water at approximately 70°C to prepare a 0.5% dilution. The prepared dilution was sprayed onto untreated polyester fibers (1.3 de × 38 mm) to achieve an application rate of 0.15% of the treatment agent relative to the polyester fiber. The treated polyester fibers were dried in a dryer at 80°C for 2 hours, and then the initial strength of the fibers was determined using a tensile testing machine. Furthermore, the strength of the fibers after 3 months at 50°C and 80% RH was determined using a tensile testing machine. The strength after 3 months was compared with the initial strength, and evaluated using the following benchmarks. The results are shown in the "Fiber Strength" column of Table 1.

[0233] • Evaluation criteria for fiber strength

[0234] ◎(Good): The strength after 3 months is more than 95% of the initial strength.

[0235] ○ (Qualified): The strength after 3 months is more than 90% but less than 95% of the initial strength.

[0236] × (Undesirable): Strength after 3 months is less than 90% of initial strength.

[0237] Test Category 5 (Emulsion Stability)

[0238] Each treatment agent prepared in Test Category 1 was diluted with warm water at approximately 70°C to prepare a 1% dilution. The prepared 1% dilution was allowed to stand at 50°C for 24 hours. The appearance of the diluted solution after standing was visually confirmed and evaluated using the following criteria. The results are shown in the "Emulsion Stability" column of Table 1.

[0239] • Evaluation criteria for emulsification stability

[0240] ◎(Good): No precipitates or sediments were observed in the lower layer.

[0241] ○ (Pass): Visible precipitates or sediment in the lower layer, which disappear upon manual stirring with a stirring rod.

[0242] × (Poor): Visible precipitates or sediment in the lower layer, which do not disappear even with manual stirring with a stirring rod.

[0243] Test Category 6 (Preparation of the first treatment agent in two dosage forms)

[0244] (Formula 2, First Treatment Agent (IA-1))

[0245] As shown in Table 4, the first treatment agent (IA-1) of the second formulation was prepared, which contained 94.5 parts (%) of the (poly)oxyalkylene derivative (A-1) shown in Table 2 as (poly)oxyalkylene derivative (A) and 5.5 parts (%) of sulfuric acid (B-1) as inorganic acid compound (B).

[0246] (2 dosage forms, first treatment agent (IA-2)~(IA-21), 2 dosage forms, first treatment agent (IB-1)~(IB-18), 2 dosage forms, first treatment agent (IC-1)~(IC-2))

[0247] The (poly)oxyalkylene derivative (A) and inorganic acid compound (B) in the proportions shown in Table 4 were prepared in the same manner as the first treatment agent (IA-1) of formulation 2.

[0248] The types and contents of (poly)oxyalkylene derivatives (A) and inorganic acid compounds (B) are shown in the "(poly)oxyalkylene derivatives (A)" and "Inorganic acid compounds (B)" columns of Table 4, respectively.

[0249] [Table 4]

[0250]

[0251] Test Category 7 (Preparation of the second treatment agent in two dosage forms)

[0252] (Formula 2, Second Treatment Agent (II-A-1))

[0253] As shown in Table 5, a second treatment agent (II-A-1) of two formulations was prepared, which contained 100 parts (%) of cetyl phosphate as an organophosphate compound (C) and its potassium salt (C-1).

[0254] (2 dosage forms, second treatment agent (II-A-2)~(II-A-10), 2 dosage forms, second treatment agent (II-B-1)~(II-B-21), 2 dosage forms, second treatment agent (II-C-1)~(II-C-2))

[0255] Organophosphate compound (C) and inorganic acid compound (B) in the proportions shown in Table 5 were prepared in the same manner as the second treatment agent (II-A-1) of formulation 2.

[0256] The types and contents of organophosphate compounds (C) and inorganic acid compounds (B) are shown in the "Organophosphate Compounds (C)" and "Inorganic Acid Compounds (B)" columns of Table 5, respectively.

[0257] Table 5

[0258]

[0259] Test Category 8 (Evaluation of Formulation Stability)

[0260] • Formulation stability evaluation of the first treatment agent in 2 dosage forms

[0261] The composition containing the first treatment agent of the second dosage form and water as solvent (mass ratio of the first treatment agent of the second dosage form: water = 95:5) was stored at 25°C for 3 days. The formulation stability was evaluated using the following benchmarks. The results are shown in the "Formulation Stability" column of Table 4.

[0262] • Formulation stability evaluation of the second treatment agent in dosage form 2

[0263] The composition containing the second treatment agent of the second dosage form and water as solvent (mass ratio of second treatment agent of the second dosage form: water = 40:60) was stored at 25°C for 3 days. The formulation stability was evaluated using the following benchmarks. The results are shown in the "Formulation Stability" column of Table 5.

[0264] • Evaluation criteria for formulation stability (compositions containing a first-stage treatment agent in two dosage forms and compositions containing a second-stage treatment agent in two dosage forms)

[0265] ○ (Good): Not gelled

[0266] × (Unacceptable): Gelatinized

[0267] Test Category 9 (Preparation of a treatment agent consisting of a first treatment agent of two dosage forms and a second treatment agent of two dosage forms)

[0268] (Example 2-A-1)

[0269] The treatment agent of Example 2-A-1 was prepared by mixing 71.2% (parts) of the first treatment agent (IA-1) of dosage form 2 and 28.8% (parts) of the second treatment agent (II-A-4) of dosage form 2 as shown in Table 6, and also mixing 1 part of the treatment agent (III-1) of dosage form 2 as another treatment agent (D) shown in Table 7 (relative to a total of 100 parts of the first treatment agent and the second treatment agent of dosage form 2).

[0270] (Examples (2-A-2)~(2-A-21), Examples (2-B-1)~(2-B-21), Examples (2-W-1)~(2-W-2))

[0271] The treatment agents for each example were prepared in the same manner as in Example 2-A-1. In addition to mixing the first treatment agent of dosage form 2 and the second treatment agent of dosage form 2 shown in Table 6, other treatment agents (D) shown in Table 7 were also mixed as needed.

[0272] The types and mass ratios of the first treatment agent in dosage form 2, the second treatment agent in dosage form 2, and other treatment agents (D) are shown in the "First Treatment Agent in Dosage Form 2", "Second Treatment Agent in Dosage Form 2", and "Other Treatment Agents (D)" columns of Table 6, respectively. The content of other treatment agents (D) indicates the mixing quantity (parts) when the total mixing amount of the first and second treatment agents in dosage form 2 is set to 100 parts.

[0273] (pH measurement)

[0274] The first and second treatment agents of the two formulations shown in Table 6 were mixed and diluted with warm water at approximately 70°C to prepare a 1% aqueous dilution of the treatment agent. In the example using another treatment agent (D), the first, second, and other treatment agents (D) of the two formulations were mixed and diluted with warm water at approximately 70°C to obtain a 1% aqueous dilution of the treatment agent. The pH of the 1% aqueous dilution prepared in each example was measured at 25°C. The measured values ​​are shown in the "pH of 1% aqueous dilution" column of Table 6.

[0275] [Table 6]

[0276]

[0277] The other treatment agents (D) listed in Table 6 are the treatment agents (2 dosage form III-1) to (2 dosage form III-6) listed in Table 7 below. The treatment agents (2 dosage form III-1) to (2 dosage form III-6) are prepared in a manner that includes the other treatment agents (D) in the proportions shown in Table 7.

[0278] [Table 7]

[0279]

[0280] Test Category 10 (Evaluation of 2-Formulation Treatment Agents)

[0281] Using the treatment agents obtained in each example, the metal friction, adhesion, fiber strength, and emulsion stability under wet conditions were evaluated in the same manner as in Example 1. The method for preparing the diluent used in evaluating the metal friction, adhesion, and emulsion stability under wet conditions was the same as that described in Test Category 9 (pH Measurement). The first treatment agent of Formulation 2, the second treatment agent of Formulation 2, and other treatment agents (D) as needed were mixed and diluted with water to prepare the diluted treatment agent solution. The results are shown in Table 6 in the columns for "Metal Friction under Wet Conditions," "Adhesion," "Fiber Strength," and "Emulsion Stability," respectively.

[0282] Test Category 11 (Preparation of the first treatment agent in 3 dosage forms)

[0283] (Formula 3, First Treatment Agent (I-1))

[0284] As shown in Table 8, the first treatment agent (I-1) of the three dosage forms was prepared, which contained 100 parts (%) of the (poly)oxyalkylene derivative (A-1) shown in Table 2 as the (poly)oxyalkylene derivative (A).

[0285] (3 dosage forms, first treatment agent (I-2) to (I-18))

[0286] The (poly)oxyalkylene derivative (A) was prepared in the same manner as the first treatment agent (I-1) of dosage form 3.

[0287] The types and contents of (poly)oxyalkylene derivatives (A) are shown in the "(poly)oxyalkylene derivatives (A)" column of Table 8.

[0288] [Table 8]

[0289]

[0290] Test Category 12 (Preparation of the second treatment agent in 3 dosage forms)

[0291] (Formula 3, Second Treatment Agent (II-1))

[0292] As shown in Table 9, the second treatment agent (II-1) of the 3-dosage form was prepared, which contains 100 parts (%) of cetyl phosphate as an organophosphate compound (C) and its potassium salt (C-1).

[0293] (3 dosage forms, second treatment agent (II-2)~(II-10))

[0294] Organophosphate compound (C) containing the proportions shown in Table 9 was prepared in the same manner as the second treatment agent (II-1) of formulation 3.

[0295] The types and contents of organophosphate compounds (C) are shown in the “Organophosphate compounds (C)” column of Table 9.

[0296] [Table 9]

[0297]

[0298] Test Category 13 (Preparation of the third treatment agent in 3 dosage forms)

[0299] (Formula 3, Treatment Agent III-1)

[0300] As shown in Table 10, the third treatment agent (III-1) of the 3-dosage form was prepared, which contained 100 parts (%) of sulfuric acid (B-1) as an inorganic acid compound (B).

[0301] (3 dosage forms, 3rd treatment agent (III-2)~(III-5))

[0302] The inorganic acid compound (B) containing the proportions shown in Table 10 was prepared in the same manner as the third treatment agent (III-1) of dosage form 3.

[0303] The types and contents of inorganic acid compounds (B) are shown in the “Inorganic Acid Compounds (B)” column of Table 10.

[0304] [Table 10]

[0305]

[0306] Test Category 14 (Evaluation of Formulation Stability)

[0307] • Formulation stability evaluation of the first treatment agent in 3 dosage forms

[0308] The composition containing the first treatment agent of dosage form 3 and water as solvent (mass ratio of first treatment agent of dosage form 3: water = 95:5) was stored at 25°C for 3 days. The formulation stability was evaluated using the following benchmarks. The results are shown in the "Formulation Stability" column of Table 8.

[0309] • Formulation stability evaluation of the second treatment agent in 3 dosage forms

[0310] The composition containing the second treatment agent of dosage form 3 and water as solvent (mass ratio of second treatment agent of dosage form 3: water = 40:60) was stored at 25°C for 3 days. The formulation stability was evaluated using the following benchmarks. The results are shown in the "Formulation Stability" column of Table 9.

[0311] • Formulation stability evaluation of the third treatment agent in 3 dosage forms

[0312] The composition containing the third treatment agent of dosage form 3 and water as solvent (mass ratio of third treatment agent of dosage form 3: water = 50:50), and containing the third treatment agent of dosage form 3, was stored at 25°C for 3 days. The formulation stability was evaluated using the following benchmarks. The results are shown in the "Formulation Stability" column of Table 10.

[0313] • Evaluation criteria for formulation stability (compositions containing a first-stage treatment agent of three dosage forms, compositions containing a second-stage treatment agent of three dosage forms, compositions containing a third-stage treatment agent of three dosage forms)

[0314] ○ (Good): Not gelled

[0315] × (Unacceptable): Gelatinized

[0316] Test Category 15 (Preparation of a treatment agent consisting of a 3-dosage form first treatment agent, a 3-dosage form second treatment agent, and a 3-dosage form third treatment agent)

[0317] (Example 3-1)

[0318] The treatment agent of Example 3-1 was prepared by mixing 67.2% (parts) of the first treatment agent (I-1) of dosage form 3, 3.9% (parts) of the second treatment agent (II-1) of dosage form 3, and 28.8% (parts) of the third treatment agent (III-4) of dosage form 3, as shown in Table 11, and also mixing 1 part of the treatment agent (IV-2) of dosage form 3 as other treatment agent (D) shown in Table 12 (relative to a total of 100 parts of the first treatment agent to the third treatment agent of dosage form 3).

[0319] (Examples (3-2) to (3-21))

[0320] The treatment agents for each example were prepared in the same manner as in Example 3-1. In addition to mixing the first treatment agent of dosage form 3, the second treatment agent of dosage form 3, and the third treatment agent of dosage form 3 shown in Table 11, other treatment agents (D) shown in Table 12 were also mixed as needed.

[0321] The types and mass ratios of the first, second, and third treatment agents of dosage forms 3, and the types and mass ratios of other treatment agents (D) are shown in the columns “First Treatment Agent of Dosage Form 3,” “Second Treatment Agent of Dosage Form 3,” “Third Treatment Agent of Dosage Form 3,” and “Other Treatment Agents (D)” of Table 11, respectively. The content of other treatment agents (D) indicates the mixing quantity (parts) when the total mixing quantity of the first to third treatment agents of dosage forms 3 is set to 100 parts.

[0322] (pH measurement)

[0323] The three formulations of treatment agent 1, 2, and 3 shown in Table 11 were mixed and diluted with warm water at approximately 70°C to prepare a 1% aqueous solution of the treatment agent. In the example using another treatment agent (D), the three formulations of treatment agent 1 through 3 and the other treatment agent (D) were mixed and diluted with warm water at approximately 70°C to obtain a 1% aqueous solution of the treatment agent. The pH of the 1% aqueous solution prepared in each example was measured at 25°C. The measured values ​​are shown in the "pH of 1% aqueous solution" column of Table 11.

[0324] [Table 11]

[0325]

[0326] The other treatment agents (D) listed in Table 11 are the treatment agents (3 dosage form IV-1) to (3 dosage form IV-6) listed in Table 12 below. The treatment agents (3 dosage form IV-1) to (3 dosage form IV-6) are prepared in a manner that includes the other treatment agents (D) in the proportions shown in Table 12.

[0327] [Table 12]

[0328]

[0329] Test Category 16 (Evaluation of 3 Formulation Treatments)

[0330] Using the treatment agents obtained in each example, the metal friction, adhesion, fiber strength, and emulsion stability under wet conditions were evaluated in the same manner as in Example 1. The method for preparing the diluent used in evaluating the metal friction, fiber strength, and emulsion stability under wet conditions was the same as that described in the (pH determination) section of Test Category 15. Treatment agent 1 (Formula 3), treatment agent 2 (Formula 3), treatment agent 3 (Formula 3), and other treatment agents (D) as needed were mixed and diluted with water to prepare the diluted treatment agent solution. The results are shown in the "Metal Friction Under Wet Conditions" column, "Adhesion" column, "Fiber Strength" column, and "Emulsion Stability" column of Table 11, respectively.

[0331] As can be clearly seen from the evaluation results of each embodiment relative to the comparative examples in each table, the treatment agent of the present invention can improve the emulsion stability when the solution is made into an aqueous dilution. Furthermore, it can reduce the adhesiveness of the fiber surface to which the treatment agent is applied and can suppress the reduction in fiber strength.

[0332] This disclosure also includes the following methods.

[0333] (Appendix 1)

[0334] A treatment agent for polyester synthetic fibers contains a (poly)oxyalkylene derivative (A), the following inorganic acid compound (B), and the following organophosphate compound (C);

[0335] Its features are,

[0336] The pH of a 1% (w / w) aqueous solution of the above-mentioned treatment agent for polyester synthetic fibers is 5.5 or higher and 8.5 or lower at 25°C.

[0337] Inorganic acid compound (B): selected from at least one of sulfuric acid, nitric acid, hydrochloric acid, and their salts;

[0338] Organic phosphate compound (C): selected from at least one of organic phosphates having 16 or more and 20 or fewer carbon atoms in the molecule, and salts thereof.

[0339] (Appendix 2)

[0340] The treatment agent for polyester synthetic fibers as described in Appendix 1, wherein...

[0341] When the total proportion of the above-mentioned (poly)oxyalkylene derivative (A), the above-mentioned inorganic acid compound (B), and the above-mentioned organophosphate compound (C) is set to 100 parts by mass, the total proportion of the above-mentioned (poly)oxyalkylene derivative (A) and the above-mentioned inorganic acid compound (B) is 20 parts by mass or more and 80 parts by mass or less, and the proportion of the above-mentioned organophosphate compound (C) is 20 parts by mass or more and 80 parts by mass or less.

[0342] (Appendix 3)

[0343] The treatment agent for polyester synthetic fibers as described in Appendix 1, wherein...

[0344] The composition comprises, in groups: a first treatment agent of type 2 for polyester synthetic fibers containing the above-mentioned (poly)oxyalkylene derivative (A), and a second treatment agent of type 2 for polyester synthetic fibers containing the above-mentioned organophosphate compound (C);

[0345] The first treatment agent of the above-mentioned polyester synthetic fiber formulation 2 and the second treatment agent of the above-mentioned polyester synthetic fiber formulation 2, or both of them, contain the above-mentioned inorganic acid compound (B).

[0346] (Appendix 4)

[0347] The treatment agent for polyester synthetic fibers as described in Appendix 1, wherein...

[0348] The product comprises, in groups: a first treatment agent of type 3 for polyester synthetic fibers containing the above-mentioned (poly)oxyalkylene derivative (A), a second treatment agent of type 3 for polyester synthetic fibers containing the above-mentioned organophosphate compound (C), and a third treatment agent of type 3 for polyester synthetic fibers containing the above-mentioned inorganic acid compound (B).

[0349] (Appendix 5)

[0350] The treatment agent for polyester synthetic fibers as described in Appendix 1, wherein...

[0351] The aforementioned polyester synthetic fibers are polyester staple fibers.

[0352] (Appendix 6)

[0353] The treatment agent for polyester synthetic fibers as described in Appendix 1, wherein...

[0354] The aforementioned polyester synthetic fibers are used for spinning.

[0355] (Appendix 7)

[0356] A composition containing a treatment agent for polyester synthetic fibers, characterized in that,

[0357] The treatment agent for polyester synthetic fibers contained in any one of Appendices 1 to 6 and the following solvent (S);

[0358] Solvent (S): A solvent with a boiling point below 105°C at atmospheric pressure.

[0359] (Appendix 8)

[0360] A first treatment agent of two formulations for polyester synthetic fibers, comprising (poly)oxyalkylene derivative (A), and used in combination with a second treatment agent of two formulations for polyester synthetic fibers or a composition comprising the second treatment agent of two formulations for polyester synthetic fibers;

[0361] The second treatment agent of the above-mentioned polyester synthetic fiber formulation 2 contains the following organophosphate compound (C);

[0362] The above-mentioned composition containing the second treatment agent of the second formulation for polyester synthetic fibers contains the above-mentioned second treatment agent of the second formulation for polyester synthetic fibers and the following solvent (S);

[0363] Its features are,

[0364] The first treatment agent of the above-mentioned polyester synthetic fiber formulation 2 and the second treatment agent of the above-mentioned polyester synthetic fiber formulation 2, or both of them contain the following inorganic acid compound (B);

[0365] When the mixture of the first treatment agent of the second formulation for polyester synthetic fibers and the second treatment agent of the second formulation for polyester synthetic fibers is set as a 1% by mass water dilution, the pH at 25°C is 5.5 or higher and 8.5 or lower.

[0366] Inorganic acid compound (B): selected from at least one of sulfuric acid, nitric acid, hydrochloric acid, and their salts;

[0367] Organic phosphate compound (C): selected from at least one of organic phosphates having 16 or more and 20 or fewer carbon atoms in the molecule, and salts thereof;

[0368] Solvent (S): A solvent with a boiling point below 105°C at atmospheric pressure.

[0369] (Appendix 9)

[0370] A composition containing a first treatment agent of two formulations for polyester synthetic fibers, characterized in that,

[0371] Contains the first treatment agent of Form 2 for polyester synthetic fibers as described in Appendix 8 and the following solvent (S);

[0372] Solvent (S): A solvent with a boiling point below 105°C at atmospheric pressure.

[0373] (Appendix 10)

[0374] A second treatment agent of type 2 for polyester synthetic fibers, comprising the following organophosphate compound (C), and used in combination with a first treatment agent of type 2 for polyester synthetic fibers or a composition comprising a first treatment agent of type 2 for polyester synthetic fibers;

[0375] The first treatment agent of the above-mentioned polyester synthetic fiber formulation 2 contains (poly)oxyalkylene derivative (A);

[0376] The above-mentioned composition containing the first treatment agent of the second formulation for polyester synthetic fibers contains the first treatment agent of the second formulation for polyester synthetic fibers and the following solvent (S);

[0377] Its features are,

[0378] The first treatment agent of the above-mentioned polyester synthetic fiber formulation 2 and the second treatment agent of the above-mentioned polyester synthetic fiber formulation 2, or both of them contain the following inorganic acid compound (B);

[0379] When the mixture of the first treatment agent of the second formulation for polyester synthetic fibers and the second treatment agent of the second formulation for polyester synthetic fibers is set as a 1% by mass water dilution, the pH at 25°C is 5.5 or higher and 8.5 or lower.

[0380] Inorganic acid compound (B): selected from at least one of sulfuric acid, nitric acid, hydrochloric acid, and their salts;

[0381] Organic phosphate compound (C): selected from at least one of organic phosphates having 16 or more and 20 or fewer carbon atoms in the molecule, and salts thereof;

[0382] Solvent (S): A solvent with a boiling point below 105°C at atmospheric pressure.

[0383] (Appendix 11)

[0384] A composition containing a second treatment agent of a second formulation for polyester synthetic fibers, characterized in that,

[0385] Contains the second treatment agent of the second formulation for polyester synthetic fibers as described in Appendix 10 and the following solvent (S);

[0386] Solvent (S): A solvent with a boiling point below 105°C at atmospheric pressure.

[0387] (Appendix 12)

[0388] A first treatment agent of type 3 for polyester synthetic fibers, comprising (poly)oxyalkylene derivative (A), and used in combination with a second treatment agent of type 3 for polyester synthetic fibers or a composition comprising the second treatment agent of type 3 for polyester synthetic fibers, and a third treatment agent of type 3 for polyester synthetic fibers or a composition comprising the third treatment agent of type 3 for polyester synthetic fibers.

[0389] The second treatment agent of the above-mentioned polyester synthetic fiber type 3 contains the following organophosphate compound (C);

[0390] The above-mentioned composition containing the second treatment agent of the third formulation for polyester synthetic fibers contains the second treatment agent of the third formulation for polyester synthetic fibers and the following solvent (S);

[0391] The third treatment agent of the above-mentioned polyester synthetic fiber type 3 contains the following inorganic acid compound (B);

[0392] The above-mentioned composition containing the third treatment agent of the third formulation for polyester synthetic fibers contains the second treatment agent of the third formulation for polyester synthetic fibers and the following solvent (S);

[0393] Its features are,

[0394] When the mixture of the above-mentioned first treatment agent of type 3 for polyester synthetic fibers, the above-mentioned second treatment agent of type 3 for polyester synthetic fibers, and the above-mentioned third treatment agent of type 3 for polyester synthetic fibers is set as a 1% by mass water dilution, the pH at 25°C is 5.5 or higher and 8.5 or lower.

[0395] Inorganic acid compound (B): selected from at least one of sulfuric acid, nitric acid, hydrochloric acid, and their salts.

[0396] Organophosphate compounds (C): selected from at least one of organophosphates having alkyl groups having 16 or more but less than 20 carbon atoms in the molecule, and their salts.

[0397] Solvent (S): A solvent with a boiling point below 105°C at atmospheric pressure.

[0398] (Appendix 13)

[0399] A composition containing a first treatment agent of a third formulation for polyester synthetic fibers, characterized in that,

[0400] Contains the first treatment agent of the third formulation for polyester synthetic fibers as described in Appendix 12 and the following solvent (S);

[0401] Solvent (S): A solvent with a boiling point below 105°C at atmospheric pressure.

[0402] (Appendix 14)

[0403] A second treatment agent of type 3 for polyester synthetic fibers, comprising an organophosphate compound (C), and used in combination with a first treatment agent of type 3 for polyester synthetic fibers or a composition comprising a first treatment agent of type 3 for polyester synthetic fibers, and a third treatment agent of type 3 for polyester synthetic fibers or a composition comprising a third treatment agent of type 3 for polyester synthetic fibers.

[0404] The first treatment agent of the above-mentioned polyester synthetic fiber formulation 3 contains (poly)oxyalkylene derivative (A);

[0405] The above-mentioned composition containing the first treatment agent of the third formulation for polyester synthetic fibers contains the first treatment agent of the third formulation for polyester synthetic fibers and the following solvent (S);

[0406] The third treatment agent in the above-mentioned polyester synthetic fiber formulation 3 contains an inorganic acid compound (B);

[0407] The above-mentioned composition containing the third treatment agent of the third formulation for polyester synthetic fibers contains the above-mentioned third treatment agent of the third formulation for polyester synthetic fibers and the following solvent (S);

[0408] Its features are,

[0409] When the mixture of the above-mentioned first treatment agent of type 3 for polyester synthetic fibers, the above-mentioned second treatment agent of type 3 for polyester synthetic fibers, and the above-mentioned third treatment agent of type 3 for polyester synthetic fibers is set as a 1% by mass water dilution, the pH at 25°C is 5.5 or higher and 8.5 or lower.

[0410] Inorganic acid compound (B): selected from at least one of sulfuric acid, nitric acid, hydrochloric acid, and their salts;

[0411] Organic phosphate compound (C): selected from at least one of organic phosphates having 16 or more and 20 or fewer carbon atoms in the molecule, and salts thereof;

[0412] Solvent (S): A solvent with a boiling point below 105°C at atmospheric pressure.

[0413] (Appendix 15)

[0414] A composition containing a second treatment agent of a third formulation for polyester synthetic fibers, characterized in that,

[0415] Contains the second treatment agent of the third formulation for polyester synthetic fibers as described in Appendix 14 and the following solvent (S);

[0416] Solvent (S): A solvent with a boiling point below 105°C at atmospheric pressure.

[0417] (Appendix 16)

[0418] A third treatment agent of type 3 for polyester synthetic fibers, comprising an inorganic acid compound (B), and used in combination with a first treatment agent of type 3 for polyester synthetic fibers or a composition comprising a first treatment agent of type 3 for polyester synthetic fibers, and a second treatment agent of type 3 for polyester synthetic fibers or a composition comprising a second treatment agent of type 3 for polyester synthetic fibers.

[0419] The first treatment agent of the above-mentioned polyester synthetic fiber formulation 3 contains (poly)oxyalkylene derivative (A);

[0420] The above-mentioned composition containing the first treatment agent of the third formulation for polyester synthetic fibers contains the first treatment agent of the third formulation for polyester synthetic fibers and the following solvent (S);

[0421] The second treatment agent of the above-mentioned polyester synthetic fiber type 3 contains the following organophosphate compound (C);

[0422] The above-mentioned composition containing the second treatment agent of the third formulation for polyester synthetic fibers contains the above-mentioned second treatment agent of the third formulation for polyester synthetic fibers and the following solvent (S);

[0423] Its features are,

[0424] When the mixture of the above-mentioned first treatment agent of type 3 for polyester synthetic fibers, the above-mentioned second treatment agent of type 3 for polyester synthetic fibers, and the above-mentioned third treatment agent of type 3 for polyester synthetic fibers is set as a 1% by mass water dilution, the pH at 25°C is 5.5 or higher and 8.5 or lower.

[0425] The inorganic acid compound (B) is selected from at least one of sulfuric acid, nitric acid, hydrochloric acid, and their salts;

[0426] The organophosphate compound (C) is selected from at least one of organophosphates having alkyl groups having 16 or more and 20 carbon atoms in the molecule, and salts thereof;

[0427] The solvent (S) has a boiling point below 105°C at atmospheric pressure.

[0428] (Appendix 17)

[0429] A composition containing a third treatment agent of a third formulation for polyester synthetic fibers, characterized in that,

[0430] Contains the third treatment agent of the third formulation for polyester synthetic fibers as described in Appendix 16 and the following solvent (S);

[0431] Solvent (S): A solvent with a boiling point below 105°C at atmospheric pressure.

[0432] (Appendix 18)

[0433] A diluent for a treatment agent used on polyester synthetic fibers, characterized in that,

[0434] The treatment agent for polyester synthetic fibers contains any one of the ingredients in Appendices 1 to 6, wherein the concentration of the treatment agent for polyester synthetic fibers is 0.1% by mass or more and 10% by mass or less.

[0435] (Appendix 19)

[0436] A method for processing polyester synthetic fibers, characterized in that,

[0437] In at least one of the spinning, stretching and finishing steps of polyester synthetic fibers, a diluted solution of a polyester synthetic fiber treatment agent is applied to the polyester synthetic fibers.

[0438] The diluted solution of the above-mentioned polyester synthetic fiber treatment agent is obtained by adding the polyester synthetic fiber treatment agent described in any one of Appendices 1 to 6 to water.

[0439] (Appendix 20)

[0440] A method for processing polyester synthetic fibers, characterized in that,

[0441] In at least one of the spinning, stretching and finishing steps of polyester synthetic fibers, a diluted solution of a polyester synthetic fiber treatment agent is applied to the polyester synthetic fibers.

[0442] The diluted solution of the above-mentioned polyester synthetic fiber treatment agent is obtained by adding the composition containing the polyester synthetic fiber treatment agent described in Appendix 7 to water.

[0443] (Appendix 21)

[0444] A method for processing polyester synthetic fibers, characterized in that,

[0445] In at least one of the spinning, stretching and finishing steps of polyester synthetic fibers, a diluted solution of a polyester synthetic fiber treatment agent is applied to the polyester synthetic fibers.

[0446] The diluted solution of the above-mentioned polyester synthetic fiber treatment agent is obtained by adding the first treatment agent of the second formulation of polyester synthetic fiber described in Appendix 8 or the composition containing the first treatment agent of the second formulation of polyester synthetic fiber described in Appendix 9, the second treatment agent of the second formulation of polyester synthetic fiber described in Appendix 10 or the composition containing the second treatment agent of the second formulation of polyester synthetic fiber described in Appendix 11 to water.

[0447] (Appendix 22)

[0448] A method for processing polyester synthetic fibers, characterized in that,

[0449] In at least one of the spinning, stretching and finishing steps of polyester synthetic fibers, a diluted solution of a polyester synthetic fiber treatment agent is applied to the polyester synthetic fibers.

[0450] The diluent for the above-mentioned treatment agent for polyester synthetic fibers is obtained by adding the first treatment agent of type 3 for polyester synthetic fibers described in Appendix 12 or the composition containing the first treatment agent of type 3 for polyester synthetic fibers described in Appendix 13, the second treatment agent of type 3 for polyester synthetic fibers described in Appendix 14 or the composition containing the second treatment agent of type 3 for polyester synthetic fibers described in Appendix 15, the third treatment agent of type 3 for polyester synthetic fibers described in Appendix 16 or the composition containing the third treatment agent of type 3 for polyester synthetic fibers described in Appendix 17 to water.

[0451] (Appendix 23)

[0452] A polyester synthetic fiber, characterized in that it is coated with any of the treatment agents for polyester synthetic fibers described in Appendices 1 to 6.

Claims

1. A treatment agent for polyester synthetic fibers, comprising 5% by mass or more of a polyoxyalkylene derivative (A), 1% by mass or more of the following inorganic acid compound (B), and 5% by mass or more of the following organophosphate compound (C). Its features are, A 1% by mass aqueous solution of the above-mentioned treatment agent for polyester synthetic fibers has a pH of 5.5 or higher and 8.5 or lower at 25°C. The above-mentioned treatment agent for polyester synthetic fibers is solvent-free. Inorganic acid compound (B): selected from at least one of sulfuric acid, nitric acid, hydrochloric acid, and their salts. Organic phosphate compound (C): selected from at least one of organic phosphates having 16 or more and 20 or fewer carbon atoms in the molecule, and salts thereof.

2. The treatment agent for polyester synthetic fibers as described in claim 1, wherein, When the total content ratio of the above-mentioned polyoxyalkylene derivative (A), the above-mentioned inorganic acid compound (B), and the above-mentioned organophosphate compound (C) is set to 100 parts by mass, the total content ratio of the above-mentioned polyoxyalkylene derivative (A) and the above-mentioned inorganic acid compound (B) is 20 parts by mass or more and 80 parts by mass or less, and the content ratio of the above-mentioned organophosphate compound (C) is 20 parts by mass or more and 80 parts by mass or less.

3. The treatment agent for polyester synthetic fibers as described in claim 1, wherein, The product comprises, in groups: a first treatment agent of type 2 for polyester synthetic fibers containing the aforementioned polyoxyalkylene derivative (A), and a second treatment agent of type 2 for polyester synthetic fibers containing the aforementioned organophosphate compound (C). The first treatment agent of the above-mentioned polyester synthetic fiber formulation 2 and the second treatment agent of the above-mentioned polyester synthetic fiber formulation 2, or both of them, contain the above-mentioned inorganic acid compound (B).

4. The treatment agent for polyester synthetic fibers as described in claim 1, wherein, The product comprises, in groups: a first treatment agent of type 3 for polyester synthetic fibers containing the above-mentioned polyoxyalkylene derivative (A), a second treatment agent of type 3 for polyester synthetic fibers containing the above-mentioned organophosphate compound (C), and a third treatment agent of type 3 for polyester synthetic fibers containing the above-mentioned inorganic acid compound (B).

5. The treatment agent for polyester synthetic fibers as described in claim 1, wherein, The aforementioned polyester synthetic fibers are polyester staple fibers.

6. The treatment agent for polyester synthetic fibers as described in claim 1, wherein, The aforementioned polyester synthetic fibers are used for spinning.

7. A composition containing a treatment agent for polyester synthetic fibers, characterized in that, The treatment agent for polyester synthetic fibers comprising any one of claims 1 to 6 and the solvent (S) described below. Solvent (S): A solvent with a boiling point below 105°C at atmospheric pressure.

8. A diluent for a treatment agent used on polyester synthetic fibers, characterized in that, The treatment agent for polyester synthetic fibers contains any one of claims 1 to 6, wherein the concentration of the treatment agent for polyester synthetic fibers is 0.1% by mass or more and 10% by mass or less.

9. A method for processing polyester synthetic fibers, characterized in that, In at least one of the spinning, stretching, and finishing steps of polyester synthetic fibers, a diluted solution of a polyester synthetic fiber treatment agent is applied to the polyester synthetic fibers. The diluted solution of the above-mentioned polyester synthetic fiber treatment agent is obtained by adding the polyester synthetic fiber treatment agent according to any one of claims 1 to 6 to water.

10. A method for processing polyester synthetic fibers, characterized in that, In at least one of the spinning, stretching, and finishing steps of polyester synthetic fibers, a diluted solution of a polyester synthetic fiber treatment agent is applied to the polyester synthetic fibers. The diluted solution of the above-mentioned polyester synthetic fiber treatment agent is obtained by adding the composition containing the polyester synthetic fiber treatment agent as described in claim 7 to water.

11. A method for processing polyester synthetic fibers, characterized in that, In at least one of the spinning, stretching, and finishing steps of polyester synthetic fibers, a diluted solution of a polyester synthetic fiber treatment agent is applied to the polyester synthetic fibers. The diluent for the above-mentioned treatment agent for polyester synthetic fibers is the diluent described in claim 8.

12. A polyester-based synthetic fiber, characterized in that, The polyester synthetic fiber treatment agent according to any one of claims 1 to 6 is attached.

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