JP7223471B1 - Treatment agent for polyester synthetic fiber, composition containing treatment agent for polyester synthetic fiber, first treatment agent for polyester synthetic fiber, composition containing first treatment agent for polyester synthetic fiber, second treatment for polyester synthetic fiber agent, composition containing second treatment agent for polyester synthetic fibers, third treatment agent for polyester synthetic fibers, composition containing third treatment agent for polyester synthetic fibers, diluent of treatment agent for polyester synthetic fibers, polyester Synthetic fiber processing method and polyester synthetic fiber - Google Patents

Abstract

[Problem] It is possible to improve emulsion stability when a synthetic fiber treatment agent is diluted with water, reduce adhesion on the surface of fibers to which the synthetic fiber treatment agent has been applied, and suppress a decrease in fiber strength. We provide processing agents for polyester synthetic fibers. [Solution] The present invention provides a treatment agent for polyester-based synthetic fibers containing a (poly)oxyalkylene derivative (A), an inorganic acid compound (B), and an organic phosphoric acid ester compound (C). The pH of a 1% by mass water diluted solution of the synthetic fiber treatment agent at 25° C. is 5.5 or more and 8.5 or less. Inorganic acid compound (B): at least one selected from sulfuric acid, nitric acid, hydrochloric acid, and salts thereof. Organic phosphoric acid ester compound (C): at least one selected from organic phosphoric acid esters having an alkyl group having 16 to 20 carbon atoms in the molecule, and salts thereof. [Selection diagram] None

Description

The present invention provides a treatment agent for polyester synthetic fibers, a composition containing a 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, and a polyester synthetic fiber. second treatment agent for polyester synthetic fiber, composition containing second treatment agent for polyester synthetic fiber, third treatment agent for polyester synthetic fiber, composition containing third treatment agent for polyester synthetic fiber, treatment agent for polyester synthetic fiber The present invention relates to a diluent, a method for treating polyester synthetic fibers, and polyester synthetic fibers.

For example, in the process of spinning and drawing synthetic fibers, the finishing process, etc., a treatment of attaching a synthetic fiber treatment agent to the surface of the fiber may be performed from the viewpoint of friction reduction, antistatic property, bundling property, etc. of the synthetic fiber. .

Conventionally, processing agents for synthetic fibers disclosed in Patent Documents 1 and 2 are known. Patent Literature 1 discloses a treatment agent for polyester-based synthetic fibers containing predetermined alkyl phosphates, a predetermined surfactant, and a monohydric aliphatic alcohol having a predetermined alkyl group in predetermined proportions. Patent document 2 contains, as essential components, an A component consisting of polyvinyl alcohol or a derivative thereof, and a B component consisting of an alkyl phosphate potassium salt or a polyoxyalkylene alkyl phosphate potassium salt having a predetermined alkyl group, and the A component and Disclosed is a fiber treatment agent for manufacturing spun yarn containing a B component in a predetermined proportion.

Japanese Patent No. 5796923 Japanese Patent No. 5651033

However, conventional processing agents for synthetic fibers sometimes generate precipitates due to deterioration in emulsification stability when the processing agents for synthetic fibers are diluted with water. In addition, the adhesion of the surface of the fiber to which the synthetic fiber treatment agent has been applied may increase, resulting in poor spinning. In addition, there have been cases in which process defects have occurred due to a decrease in the strength of the fibers to which the synthetic fiber treatment agent has been applied.

As a result of research to solve the above problems, the present inventors have found that a (poly)oxyalkylene derivative (A), a predetermined inorganic acid compound (B), and a predetermined organic phosphorus It has been found that a configuration containing an acid ester compound (C) and having a defined pH is suitable.

Various aspects of solving the above problems will be described.
The polyester-based synthetic fiber treatment agent of aspect 1 contains 5% by mass or more of the (poly)oxyalkylene derivative (A), 1% by mass or more of the following inorganic acid compound (B), and the following organic phosphoric acid ester compound ( A polyester synthetic fiber treatment agent containing C) in an amount of 5% by mass or more , wherein a 1% by mass water dilution of the polyester synthetic fiber treatment agent (not containing a solvent) has a pH of 5 at 25°C. The gist is that it is 5 or more and 8.5 or less.

Inorganic acid compound (B): at least one selected from sulfuric acid, nitric acid, hydrochloric acid, and salts thereof.
Organic phosphate ester compound (C): at least one selected from organic phosphate esters having an alkyl group having 16 to 20 carbon atoms in the molecule, and salts thereof.

Aspect 2 is the polyester-based synthetic fiber treatment agent according to Aspect 1, in which the content ratio of the (poly)oxyalkylene derivative (A), the inorganic acid compound (B), and the organic phosphate ester compound (C) When the total of 100 parts by mass, the total of 20 parts by mass or more and 80 parts by mass or less of the (poly)oxyalkylene derivative (A) and the inorganic acid compound (B), and the organic phosphoric acid ester compound (C ) in a proportion of 20 parts by mass or more and 80 parts by mass or less.

Aspect 3 is the polyester-based synthetic fiber treatment agent according to aspect 1 or 2, wherein the two-component first treatment agent for polyester-based synthetic fibers containing the (poly)oxyalkylene derivative (A); and a two-component second treatment agent for polyester synthetic fibers containing an acid ester compound (C), the two-component first treatment agent for polyester synthetic fibers, and the polyester synthetic fiber The inorganic acid compound (B) is contained in either one or both of the two-part type second treatment agents for use.

Aspect 4 is the polyester synthetic fiber treatment agent according to aspect 1 or 2, wherein the polyester synthetic fiber three-component first treatment agent containing the (poly)oxyalkylene derivative (A); A set comprising a 3-component second treatment agent for polyester synthetic fibers containing the acid ester compound (C) and a 3-component third treatment agent for polyester synthetic fibers containing the inorganic acid compound (B). consists of

Aspect 5 is the polyester synthetic fiber treatment agent according to any one of aspects 1 to 4, wherein the polyester synthetic fibers are short polyester fibers.
Aspect 6 is the polyester synthetic fiber treatment agent according to any one of aspects 1 to 5, wherein the polyester synthetic fiber is for producing spun yarn.

The gist of the composition containing the treatment agent for polyester synthetic fibers of aspect 7 is that it contains the treatment agent for polyester synthetic fibers according to any one of aspects 1 to 6 and the following solvent (S). .

Solvent (S): A solvent having a boiling point of 105° C. or less at atmospheric pressure.
The two-component first treatment agent for polyester synthetic fibers of aspect 8 is a two-component second treatment agent for polyester synthetic fibers containing the following organic phosphate ester compound (C), or the following organic phosphate ester A two-part second treatment agent for polyester synthetic fibers containing the compound (C) and a two-part second treatment agent-containing composition for polyester synthetic fibers containing the following solvent (S), A two-component first treatment agent for polyester synthetic fibers containing a poly)oxyalkylene derivative (A), wherein the two-component first treatment agent for polyester synthetic fibers and the second agent for polyester synthetic fibers Either one or both of the type second treatment agents contain the following inorganic acid compound (B), and the two-part type first treatment agent for polyester synthetic fibers and the two-part type second treatment for polyester synthetic fibers When the mixture of agents (not containing a solvent) is diluted with 1% by mass of water, the pH at 25 ° C. is 5.5 or more and 8.5 or less, and the two-component first treatment for polyester synthetic fibers agent and the two-component second treatment agent for polyester synthetic fibers (not containing a solvent), the (poly)oxyalkylene derivative (A) is added in an amount of 5% by mass or more, and the inorganic acid compound (B) is added The gist is that it contains 1% by mass or more and 5% by mass or more of the organic phosphate compound (C) .

Inorganic acid compound (B): at least one selected from sulfuric acid, nitric acid, hydrochloric acid, and salts thereof.
Organic phosphate ester compound (C): at least one selected from organic phosphate esters having an alkyl group having 16 to 20 carbon atoms in the molecule, and salts thereof.

Solvent (S): A solvent having a boiling point of 105° C. or less at atmospheric pressure.
The composition containing the two-component first treating agent for polyester synthetic fibers of aspect 9 contains the two-component first treating agent for polyester synthetic fibers according to aspect 8 and the following solvent (S). is the gist.

Solvent (S): A solvent having a boiling point of 105° C. or less at atmospheric pressure.
The two-component second treatment agent for polyester synthetic fibers of aspect 10 is a two-component first treatment agent for polyester synthetic fibers containing a (poly)oxyalkylene derivative (A), or a (poly)oxyalkylene derivative ( A) is used in combination with a two-part first treatment agent for polyester synthetic fibers containing A) and a two-part first treatment agent-containing composition for polyester synthetic fibers containing the following solvent (S), and the following organic A two-part second treatment agent for polyester synthetic fibers containing a phosphate ester compound (C), comprising: the two-part first treatment agent for polyester synthetic fibers; and the two-part treatment agent for polyester synthetic fibers. Either one or both of the second treatment agents contain the following inorganic acid compound (B), and the two-part first treatment agent for polyester synthetic fibers and the two-part second treatment agent for polyester synthetic fibers When the mixture (not containing a solvent) is diluted with 1% by mass of water, the pH at 25 ° C. is 5.5 or more and 8.5 or less, and the two-component first treatment agent for polyester synthetic fibers and the mixture of the two-component second treatment agent for polyester synthetic fibers (not containing solvent), the (poly)oxyalkylene derivative (A) is 5 mass% or more, the inorganic acid compound (B) is 1 The gist is that it contains 5% by mass or more of the organic phosphate ester compound (C) and 5% by mass or more .

Inorganic acid compound (B): at least one selected from sulfuric acid, nitric acid, hydrochloric acid, and salts thereof.
Organic phosphate ester compound (C): at least one selected from organic phosphate esters having an alkyl group having 16 to 20 carbon atoms in the molecule, and salts thereof.

Solvent (S): A solvent having a boiling point of 105° C. or less at atmospheric pressure.
The two-component second treatment agent-containing composition for polyester synthetic fibers of aspect 11 contains the two-component second treatment agent for polyester synthetic fibers according to aspect 10 and the following solvent (S). is the gist.

Solvent (S): A solvent having a boiling point of 105° C. or less at atmospheric pressure.
The three-component first treatment agent for polyester synthetic fibers of aspect 12 is a three-component second treatment agent for polyester synthetic fibers containing the following organic phosphate ester compound (C), or the following organic phosphate ester A composition containing a 3-part second treatment agent for polyester synthetic fibers containing the compound (C) and a 3-part second treatment agent for polyester synthetic fibers containing the following solvent (S), and the following inorganic acid A 3-part type 3rd treatment agent for polyester synthetic fibers containing the compound (B), or a 3-part type 3rd treatment agent for polyester synthetic fibers containing the following inorganic acid compound (B) and the following solvent (S ) and a composition containing a three-part third treating agent for polyester synthetic fibers containing a mixture of the three-part first treatment agent for polyester synthetic fibers, the second three-part treatment agent for polyester synthetic fibers, and the third three-part treatment agent for polyester synthetic fibers (including a solvent). not) as a 1% by mass water dilution, the pH at 25 ° C. is 5.5 or more and 8.5 or less, and the three-component first treatment agent for polyester synthetic fibers, the polyester synthetic fiber In a mixture (not containing a solvent) of the 3-component second treatment agent for polyester synthetic fibers and the 3-component third treatment agent for polyester synthetic fibers, the (poly)oxyalkylene derivative (A) is added in an amount of 5% by mass or more, The gist is that the inorganic acid compound (B) is contained in an amount of 1% by mass or more and the organic phosphoric ester compound (C) is contained in an amount of 5% by mass or more.

Inorganic acid compound (B): at least one selected from sulfuric acid, nitric acid, hydrochloric acid, and salts thereof.
Organic phosphate ester compound (C): at least one selected from organic phosphate esters having an alkyl group having 16 to 20 carbon atoms in the molecule, and salts thereof.

Solvent (S): A solvent having a boiling point of 105° C. or less at atmospheric pressure.
The composition containing the three-part first treatment agent for polyester synthetic fibers of aspect 13 contains the three-part first treatment agent for polyester synthetic fibers according to aspect 12 and the following solvent (S). is the gist.

Solvent (S): A solvent having a boiling point of 105° C. or less at atmospheric pressure.
The three-component second treatment agent for polyester synthetic fibers of aspect 14 is a three-component first treatment agent for polyester synthetic fibers containing a (poly)oxyalkylene derivative (A), or a (poly)oxyalkylene derivative ( A) a 3-part type first treating agent for polyester synthetic fibers containing A), a composition containing a 3-part type first treating agent for polyester synthetic fibers containing the following solvent (S), and an inorganic acid compound (B) or a 3-part type 3rd treatment agent for polyester synthetic fibers containing an inorganic acid compound (B) and a polyester-type 3rd treatment agent containing the following solvent (S) A three-part second treatment agent for polyester synthetic fibers, which is used in combination with a composition containing a three-part third treatment agent for synthetic fibers and contains an organic phosphoric acid ester compound (C), wherein the polyester synthetic fiber 3-part first treatment agent for polyester synthetic fibers, the 3-part second treatment agent for polyester synthetic fibers, and the 3-part third treatment agent for polyester synthetic fibers (without solvent) mixed with 1 mass% water When used as a diluted solution, the pH at 25° C. is 5.5 or more and 8.5 or less, and the three-component first treatment agent for polyester synthetic fibers and the three-component second treatment agent for polyester synthetic fibers are used. and the mixture (solvent-free) of the three-part type third treatment agent for polyester synthetic fibers, the (poly)oxyalkylene derivative (A) is added in an amount of 5% by mass or more, and the inorganic acid compound (B) 1% by mass or more, and 5% by mass or more of the organic phosphoric acid ester compound (C) .

Inorganic acid compound (B): at least one selected from sulfuric acid, nitric acid, hydrochloric acid, and salts thereof.
Organic phosphate ester compound (C): at least one selected from organic phosphate esters having an alkyl group having 16 to 20 carbon atoms in the molecule, and salts thereof.

Solvent (S): A solvent having a boiling point of 105° C. or less at atmospheric pressure.
The composition containing a three-part type second treatment agent for polyester synthetic fibers of aspect 15 contains the three-part type second treatment agent for polyester synthetic fibers according to aspect 14 and the following solvent (S). is the gist.

Solvent (S): A solvent having a boiling point of 105° C. or less at atmospheric pressure.
The three-component third treatment agent for polyester synthetic fibers of aspect 16 is a three-component first treatment agent for polyester synthetic fibers containing a (poly)oxyalkylene derivative (A), or a (poly)oxyalkylene derivative A three-part first treating agent for polyester synthetic fibers containing (A) and a composition containing a three-part first treating agent for polyester synthetic fibers containing the following solvent (S), and the following organic phosphoric acid A three-component second treatment agent for polyester synthetic fibers containing an ester compound (C), or a three-component second treatment agent for polyester synthetic fibers containing the following organic phosphoric acid ester compound (C) and the following A three-part third treatment agent for polyester synthetic fibers containing an inorganic acid compound (B), which is used in combination with a composition containing a three-part second treatment agent for polyester synthetic fibers containing a solvent (S). a mixture of the three-part first treatment agent for polyester synthetic fibers, the second three-part treatment agent for polyester synthetic fibers, and the third three-part treatment agent for polyester synthetic fibers (including a solvent). not) as a 1% by mass water dilution, the pH at 25 ° C. is 5.5 or more and 8.5 or less, and the three-component first treatment agent for polyester synthetic fibers, the polyester synthetic fiber In a mixture (not containing a solvent) of the 3-component second treatment agent for polyester synthetic fibers and the 3-component third treatment agent for polyester synthetic fibers, the (poly)oxyalkylene derivative (A) is added in an amount of 5% by mass or more, The gist is that the inorganic acid compound (B) is contained in an amount of 1% by mass or more and the organic phosphoric ester compound (C) is contained in an amount of 5% by mass or more.

Inorganic acid compound (B): at least one selected from sulfuric acid, nitric acid, hydrochloric acid, and salts thereof.
Organic phosphate ester compound (C): at least one selected from organic phosphate esters having an alkyl group having 16 to 20 carbon atoms in the molecule, and salts thereof.

Solvent (S): A solvent having a boiling point of 105° C. or less at atmospheric pressure.
The composition containing a three-part type third treating agent for polyester synthetic fibers of aspect 17 contains the three-part type third treating agent for polyester synthetic fibers according to aspect 16 and the following solvent (S). is the gist.

Solvent (S): A solvent having a boiling point of 105° C. or less at atmospheric pressure.
The diluent of the treatment agent for polyester synthetic fibers of aspect 18 contains the treatment agent for polyester synthetic fibers according to any one of aspects 1 to 6, and the concentration of the treatment agent for polyester synthetic fibers is 0. .1 mass % or more and 10 mass % or less;

Aspect 19 is a method for treating a polyester synthetic fiber, in which the polyester according to any one of aspects 1 to 6 is added to water in at least one step of the spinning step, the drawing step, and the finishing step of the polyester synthetic fiber. The gist of the present invention is to apply a diluted solution of a polyester synthetic fiber treatment agent obtained by adding a synthetic fiber treatment agent to a polyester synthetic fiber.

Aspect 20 of the method for treating a polyester synthetic fiber comprises, in at least one step of a spinning step, a drawing step, and a finishing step of the polyester synthetic fiber, the composition containing the treatment agent for polyester synthetic fiber according to aspect 7 in water. The gist is to apply a diluted solution of a treatment agent for polyester synthetic fibers obtained by adding a substance to polyester synthetic fibers.

Aspect 21 is a method for treating a polyester synthetic fiber, wherein in at least one step of the spinning step, the drawing step, and the finishing step of the polyester synthetic fiber, the two-component type for polyester synthetic fiber according to aspect 8 is added to water. 1 treatment agent or the composition containing the 2-part first treatment agent for polyester synthetic fibers according to aspect 9, and the 2-part second treatment agent for polyester synthetic fibers according to aspect 10 or the polyester according to aspect 11 The gist of the present invention is to apply a dilute solution of a polyester synthetic fiber treatment agent obtained by adding a composition containing a two-component second treatment agent for synthetic fibers to a polyester synthetic fiber.

Aspect 22 is a method for treating a polyester synthetic fiber, in which water is added to water in at least one of the polyester synthetic fiber spinning step, the drawing step, and the finishing step. 1 treatment agent or the composition containing the 3-part first treatment agent for polyester synthetic fibers according to aspect 13, and the 3-part second treatment agent for polyester synthetic fibers according to aspect 14 or the polyester according to aspect 15 A composition containing a three-part type second treatment agent for synthetic fibers, and a three-part type third treatment agent for polyester synthetic fibers according to aspect 16 or a three-part type third treatment for polyester synthetic fibers according to aspect 17. and a diluted solution of a treatment agent for polyester synthetic fibers obtained by adding an agent-containing composition to polyester synthetic fibers.

The gist of the polyester synthetic fiber of aspect 23 is that the treatment agent for polyester synthetic fibers according to any one of aspects 1 to 6 is adhered.

According to the present invention, it is possible to improve the emulsification stability when the treatment agent for synthetic fibers is diluted with water. In addition, it is possible to reduce adhesion on the surface of the fiber to which the synthetic fiber treatment agent is applied, and to suppress a decrease in fiber strength.

<First Embodiment>
A first embodiment of the treatment agent for polyester synthetic fibers of the present invention (hereinafter also referred to as a treatment agent) will be described below. The treatment agent of the present embodiment contains a (poly)oxyalkylene derivative (A), an inorganic acid compound (B) below, and an organic phosphoric acid ester compound (C) below, and is diluted with 1% by mass of the treatment agent with water. The pH of the liquid at 25°C is 5.5 or more and 8.5 or less.

((Poly)oxyalkylene derivative (A))
The (poly)oxyalkylene derivative (A) used in the present embodiment serves as a surfactant to improve the stability of the treatment agent, thereby improving each function of the treatment agent.

Examples of the (poly)oxyalkylene derivative (A) include those having a (poly)oxyalkylene structure obtained by adding an alkylene oxide to an alcohol or a carboxylic acid, and an ester compound of a carboxylic acid and a polyhydric alcohol to which an alkylene oxide is added. Ether ester compounds having a (poly)oxyalkylene structure, those having a (poly)oxyalkylene structure in which an alkylene oxide is added to an aliphatic amine as an amine compound, and those having an alkylene oxide added to a fatty acid amide ( Examples thereof include those having a poly)oxyalkylene structure and block copolymers having a polyoxyethylene chain and a polyoxypropylene chain.

Among these, polyoxyalkylene alkyl ethers, polyoxyalkylene alkenyl ethers, polyoxyalkylene alkyl esters, polyoxyalkylene alkenyl esters, polyoxyalkylene alkylphenyl ethers, polyoxyalkylene polyhydric alcohol fatty acid esters, polyoxyalkylene alkylamines , polyoxyalkylenealkenylamines are preferred.

Specific examples of alcohols used as raw materials for the (poly)oxyalkylene derivative (A) include (1) methanol, ethanol, propanol, butanol, pentanol, hexanol, octanol, nonanol, decanol, undecanol, dodecanol, tridecanol, tetradecanol, pentadecanol, hexadecanol, heptadecanol, octadecanol, nonadecanol, eicosanol, heneicosanol, docosanol, tricosanol, tetracosanol, pentacosanol, hexacosanol, heptakosanol, octacosanol , nonacosanol, triacontanol and other linear alkyl alcohols, (2) isopropanol, isobutanol, isohexanol, 2-ethylhexanol, isononanol, isodecanol, isododecanol, isotridecanol, isotetradecanol, isotriacon Tanol, isohexadecanol, isoheptadecanol, isooctadecanol, isononadecanol, isoeicosanol, isoheneicosanol, isodocosanol, isotricosanol, isotetracosanol, isopentacosa (3) straight-chain alkenyl alcohols such as tetradecenol, hexadecenol, heptadecenol, octadecenol, and nonadecenol; ) branched alkenyl alcohols such as isohexadecenol and isooctadecenol, (5) cyclic alkyl alcohols such as cyclopentanol and cyclohexanol, (6) phenol, nonylphenol, benzyl alcohol, monostyrenated phenol, distyrenated Aromatic alcohols such as phenol and tristyrenated phenol are included.

Specific examples of carboxylic acids used as raw materials for the (poly)oxyalkylene derivative (A) include (1) octylic acid, nonanoic acid, decanoic acid, undecanoic acid, dodecanoic acid, tridecanoic acid, tetradecanoic acid, and pentadecanoic acid. , hexadecanoic acid, heptadecanoic acid, octadecanoic acid, nonadecanoic acid, eicosanoic acid, heneicosanoic acid, linear alkyl carboxylic acids such as docosanoic acid, (2) 2-ethylhexanoic acid, isododecanoic acid, isotridecanoic acid, isotetradecanoic acid, isohexadecane branched alkylcarboxylic acids such as acids and isooctadecanoic acid; (3) linear alkenylcarboxylic acids such as octadecenoic acid, octadecadienoic acid and octadecatrienoic acid; (4) aromatic carboxylic acids such as benzoic acid; ) and hydroxycarboxylic acids such as ricinoleic acid.

As the alkylene oxide used as a raw material for forming the (poly)oxyalkylene structure of the (poly)oxyalkylene derivative (A), an alkylene oxide having 2 or more and 4 or less carbon atoms is preferable. Specific examples of alkylene oxides include ethylene oxide, propylene oxide, and butylene oxide. The number of moles of alkylene oxide to be added is appropriately set, but is preferably 0.1 to 250 mol, more preferably 1 to 200 mol, and still more preferably 2 to 150 mol. Ranges with any combination of the above upper and lower limits are also envisioned. The number of moles of alkylene oxide to be added indicates the number of moles of alkylene oxide per 1 mole of the compound to be added in the starting material. As for the alkylene oxide, one type of alkylene oxide may be used alone, or two or more types of alkylene oxide may be used in combination as appropriate. When two or more types of alkylene oxides are applied, their addition mode may be block addition, random addition, or a combination of block addition and random addition, and is not particularly limited.

Specific examples of polyhydric alcohols used as starting materials for the (poly)oxyalkylene derivative (A) include ethylene glycol, propylene glycol, 1,3-propanediol, 1,2-butanediol, and 1,3-butanediol. , 1,4-butanediol, 2-methyl-1,2-propanediol, 1,5-pentanediol, 1,6-hexanediol, 2,5-hexanediol, 2-methyl-2,4-pentanediol , 2,3-dimethyl-2,3-butanediol, glycerin, 2-methyl-2-hydroxymethyl-1,3-propanediol, trimethylolpropane, sorbitan, pentaerythritol, sorbitol and the like.

Specific examples of the aliphatic amine used as a starting material for the (poly)oxyalkylene derivative (A) include methylamine, ethylamine, butylamine, octylamine, laurylamine, octadecylamine, octadecenylamine, and coconut amine.

Specific examples of fatty acid amides used as starting materials for the (poly)oxyalkylene derivative (A) include octylic acid amide, lauric acid amide, palmitic acid amide, stearic acid amide, oleic acid amide, behenic acid amide, and lignoceric acid amide. etc.

A block copolymer having a polyoxyethylene chain and a polyoxypropylene chain is particularly limited as long as it has a polyoxypropylene chain with low hydrophilicity and a polyoxyethylene chain with high hydrophilicity and has a surfactant action. not. The number of polyoxyethylene chains and polyoxypropylene chains in the molecule is not particularly limited. and two polyoxyethylene chains sandwiching it. Also, an ether compound obtained by adding a polyoxyethylene chain and a polyoxypropylene chain to a polyhydric alcohol may be used. The number of moles of ethylene oxide added to form a polyoxyethylene chain is not particularly limited, and may be, for example, 5 mol or more and 200 mol or less. The number of moles of propylene oxide to be added to form a polyoxypropylene chain is not particularly limited, and may be, for example, 5 mol or more and 100 mol or less.

Specific examples of the (poly)oxyalkylene derivative (A) include, for example, a compound obtained by adding ethylene oxide to decyl alcohol and then adding propylene oxide, and a compound obtained by adding ethylene oxide to C12-13 branched alcohol. compounds, compounds obtained by randomly adding ethylene oxide and propylene oxide to C12-13 branched alcohols, compounds obtained by randomly adding ethylene oxide and propylene oxide to C11-14 alcohols, and C12-13 branched alcohols A compound obtained by randomly adding ethylene oxide and propylene oxide and then adding ethylene oxide, a compound obtained by randomly adding ethylene oxide and propylene oxide to tridecyl alcohol, and adding propylene oxide to isodecyl alcohol. A compound obtained by adding ethylene oxide after addition, a compound obtained by randomly adding ethylene oxide and propylene oxide to isodecyl alcohol, and a compound obtained by adding propylene oxide to isotridecyl alcohol after adding ethylene oxide. , a compound obtained by adding ethylene oxide to dodecyl alcohol, a compound obtained by adding ethylene oxide to dodecyl alcohol and then adding propylene oxide, a compound obtained by reacting dodecylamine with ethylene oxide, octadecyl alcohol A compound obtained by adding ethylene oxide to , a compound obtained by adding ethylene oxide to lauric acid, a compound obtained by adding ethylene oxide to coconut alkylamine, and a compound obtained by adding propylene oxide to diglycerin. , a compound obtained by adding ethylene oxide, a compound obtained by adding propylene oxide to propylene glycol and then adding ethylene oxide, a compound obtained by adding ethylene oxide to nonylphenol, and adding ethylene oxide to dodecylamine. A salt of the reacted compound and phosphoric acid and the like can be mentioned.

For these (poly)oxyalkylene derivatives (A), one type of (poly)oxyalkylene derivative may be used alone, or two or more types of (poly)oxyalkylene derivatives may be used in appropriate combination. good too.

The lower limit of the content of the (poly)oxyalkylene derivative (A) in the treatment agent is 5 % by mass or more , preferably 10% by mass or more. When the content of the (poly)oxyalkylene derivative (A) is 5% by mass or more, the emulsification stability can be improved when the treating agent is diluted with water. The upper limit of the content of the (poly)oxyalkylene derivative (A) is preferably 90% by mass or less, more preferably 85% by mass or less. When the content of the (poly)oxyalkylene derivative (A) is 90% by mass or less, adhesion on the surface of the fiber to which the treatment agent is applied can be reduced. Ranges in which the above upper and lower limits are arbitrarily combined are also envisioned.

(Inorganic acid compound (B))
Sulfuric acid, nitric acid, hydrochloric acid, and salts thereof are examples of the inorganic acid compound (B) that is used in the treatment agent of the present embodiment. The inorganic acid compound (B) can suppress a decrease in the strength of fibers to which a treatment agent is applied.

As the inorganic acid salt, those exhibiting neutrality or acidity in an aqueous solution are preferred, and those exhibiting acidity are more preferred. Specific examples of inorganic acid salts include sodium hydrogensulfate, potassium hydrogensulfate, potassium sulfate, sodium sulfate, and aluminum sulfate.

As these inorganic acid compounds (B), one type of inorganic acid compound may be used alone, or two or more types of inorganic acid compounds may be used in appropriate combination.
The lower limit of the content of the inorganic acid compound (B) in the treatment agent is 1 % by mass or more , preferably 2% by mass or more. When the content ratio of the inorganic acid compound (B) is 1% by mass or more, the pH of the treatment agent can be adjusted to an appropriate range, and a decrease in the fiber strength to which the treatment agent is applied can be suppressed. Moreover, the upper limit of the content of the inorganic acid compound (B) is preferably 10% by mass or less, more preferably 7% by mass or less. When the content of the inorganic acid compound (B) is 10% by mass or less, the pH of the treatment agent can be adjusted to an appropriate range, and the emulsification stability can be improved when the treatment agent is diluted with water. Furthermore, the wet metal friction of fibers to which the treatment agent is applied can be reduced. Ranges in which the above upper and lower limits are arbitrarily combined are also envisioned.

(Organic phosphate ester compound (C))
Examples of the organic phosphate ester compound (C) used in the treatment agent of the present embodiment include organic phosphate esters having an alkyl group having 16 or more and 20 or less carbon atoms in the molecule, and salts thereof. The organic phosphate ester compound (C) can reduce adhesion on the fiber surface to which the treatment agent is applied.

The alkyl group that constitutes the organic phosphoric acid ester compound may be, for example, linear or branched. Specific examples of alkyl groups include hexadecyl, heptadecyl, octadecyl, nonadecyl, icosyl, isohexadecyl, isoheptadecyl, isooctadecyl, isononadecyl, and isoicosyl groups.

Phosphoric acid constituting the organic phosphoric acid ester compound is not particularly limited, and may be orthophosphoric acid or polyphosphoric acid such as diphosphoric acid. When organic phosphate salts are applied, the salts include, for example, phosphate amine salts, phosphate ammonium salts, phosphate metal salts, and the like.

Examples of metal salts include alkali metal salts and alkaline earth metal salts. Specific examples of alkali metals constituting alkali metal salts include sodium, potassium, and lithium. Alkaline earth metals constituting the alkaline earth metal salt include metals corresponding to group 2 elements such as calcium, magnesium, beryllium, strontium, and barium.

Any of a primary amine, a secondary amine, and a tertiary amine may be sufficient as the amine which comprises an amine salt. Specific examples of amines constituting amine salts include (1) methylamine, dimethylamine, trimethylamine, ethylamine, diethylamine, triethylamine, N—N-diisopropylethylamine, butylamine, dibutylamine, 2-methylbutylamine, and tributylamine. , octylamine, dimethyllaurylamine, etc. (2) aromatic amines or heterocyclic amines such as aniline, N-methylbenzylamine, pyridine, morpholine, piperazine, and derivatives thereof, (3) monoethanolamine , N-methylethanolamine, diethanolamine, triethanolamine, isopropanolamine, diisopropanolamine, triisopropanolamine, dibutylethanolamine, butyldiethanolamine, octyldiethanolamine, lauryldiethanolamine and other alkanolamines; and (5) polyoxyalkylenealkylaminoethers such as polyoxyethylene laurylaminoether and polyoxyethylenesterylaminoether.

Specific examples of the organic phosphate compound (C) include cetyl phosphate, cetyl phosphate, stearyl phosphate, and stearyl phosphate.

The acid value of the organic phosphoric acid ester compound (C) is not particularly limited.
As these organic phosphate compounds (C), one kind of organic phosphate compounds may be used alone, or two or more kinds of organic phosphate compounds may be used in combination as appropriate.

The lower limit of the content of the organic phosphate compound (C) in the treatment agent is 5 % by mass or more , preferably 10% by mass or more, and more preferably 20% by mass. When the content of the organic phosphoric acid ester compound (C) is 5% by mass or more, adhesion on the fiber surface to which the treatment agent is applied can be reduced. The upper limit of the content of the organic phosphate compound (C) is preferably 90% by mass or less, more preferably 85% by mass or less, and even more preferably 80% by mass or less. When the content of the organic phosphate compound (C) is 90% by mass or less, the emulsification stability can be improved when the treating agent is diluted with water. Ranges in which the above upper and lower limits are arbitrarily combined are also envisioned.

When the total content of the (poly)oxyalkylene derivative (A), the inorganic acid compound (B), and the organic phosphoric acid ester compound (C) in the treatment agent is 100 parts by mass, the (poly)oxyalkylene derivative It is preferable to contain (A) and the inorganic acid compound (B) in a total of 20 to 80 parts by mass and the organic phosphoric acid ester compound (C) in a proportion of 20 to 80 parts by mass. By defining such a range, the effects of the present invention can be further improved. Ranges in which the above upper and lower limits are arbitrarily combined are also envisioned.

(pH of treatment agent)
The lower limit of the pH at 25° C. of the 1 mass % water-diluted solution of the treatment agent is 5.5 or more, preferably 5.6 or more. When the pH is 5.5 or higher, the emulsification stability can be improved when the treatment agent is diluted with water. The upper limit of the pH at 25° C. of the 1 mass % water-diluted solution of the treatment agent is 8.5 or less, preferably 8.3 or less. When the pH is 8.5 or less, it is possible to suppress the decrease in the fiber strength to which the treating agent is applied. Ranges in which the above upper and lower limits are arbitrarily combined are also envisioned.

(preservation form)
The treatment agent may be configured as a single dosage form containing the above-described components (A) to (C), or from the viewpoint of improving formulation stability, a two-part treatment agent or a three-part treatment agent as shown below. It may be configured as a dosage-type treatment agent.

The two-part treatment agent comprises a two-part first treatment agent for polyester synthetic fibers containing a (poly)oxyalkylene derivative (A) (hereinafter referred to as a "two-part first treatment agent"), and an organic phosphorus and a two-component second treatment agent for polyester synthetic fibers containing the acid ester compound (C) (hereinafter referred to as "two-component second treatment agent"). Either one or both of the two-pack type first treatment agent and the two-pack type second treatment agent contain the inorganic acid compound (B).

The two-component processing agent consists of a two-component first processing agent and a two-component second processing agent that is separate from the two-component first processing agent during storage or distribution. It is The two-component treatment agent is prepared as a mixture in which the two-component first treatment agent and the two-component second treatment agent are mixed at the time of use.

The three-part treatment agent comprises a three-part first treatment agent for polyester synthetic fibers containing a (poly)oxyalkylene derivative (A) (hereinafter referred to as a "three-part first treatment agent"), and an organic phosphorus A three-component second treatment agent for polyester synthetic fibers containing an acid ester compound (C) (hereinafter referred to as a "three-component second treatment agent") and a polyester synthetic fiber containing an inorganic acid compound (B) and a three-component third treatment agent (hereinafter referred to as "three-component third treatment agent").

The three-component type processing agent includes a three-component type first processing agent and a three-component type second processing agent that are separate from the three-component type first processing agent during storage or distribution. The first treatment agent and the second three-part treatment agent are separately composed of the third treatment agent of three-part type. The three-component treatment agent is prepared by mixing the three-component first treatment agent, the three-component second treatment agent, and the three-component third treatment agent at the time of use.

(solvent)
The treatment agent of the present embodiment is mixed with a solvent as necessary to prepare a composition containing a treatment agent for polyester synthetic fibers (hereinafter referred to as a "treatment agent-containing composition"), and is in the form of a treatment agent-containing composition. , may be stored or distributed.

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

When the total content of the treating agent and the solvent in the treating agent-containing composition is 100 parts by mass, the treating agent is preferably contained in an amount of 10 parts by mass or more.
The effects of the treatment agent of the first embodiment will be described.

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

Therefore, it is possible to improve the emulsification stability when the processing agent is diluted with water. As a result, it is possible to reduce the occurrence of deposits and/or sediments from the emulsified liquid, and to reduce the uneven quality of the fibers due to the uneven adhesion of the treatment agent. In addition, it is possible to reduce the adhesion of the surface of the fiber to which the treatment agent is applied, and to suppress the decrease in fiber strength. As a result, it is possible to reduce unevenness in the quality of processed products due to process failures.

In addition, it is possible to reduce the wet metal friction of the fiber to which the treatment agent is applied. Thereby, manufacturing efficiency can be improved.
(1-2) In the treatment agent of the first embodiment, the two-component first treatment agent containing the (poly)oxyalkylene derivative (A) and the two-component first treatment agent containing the organic phosphate compound (C) and a second treatment agent. Either one or both of the two-component first treatment agent and the two-component second treatment agent contain the inorganic acid compound (B). Such a configuration can improve the formulation stability, particularly storage stability, of the treatment agent.

(1-3) In the treatment agent of the first embodiment, the three-component first treatment agent containing the (poly)oxyalkylene derivative (A) and the three-component first treatment agent containing the organic phosphate compound (C) It may be configured as a set including the second treatment agent and a three-component third treatment agent containing the inorganic acid compound (B). Such a configuration can improve the formulation stability, particularly storage stability, of the treatment agent.

<Second embodiment>
Next, a second embodiment of the two-pack type first treatment agent of the present invention will be described. The following description focuses on differences from the above embodiment.

The two-component first treatment agent of the present embodiment contains a (poly)oxyalkylene derivative (A). The two-part type first treatment agent is a two-part type second treatment agent containing the organic phosphate compound (C) at the time of use, or a two-part type second treatment agent containing the organic phosphate compound (C) and It is used in combination with a two-part composition containing a second treatment agent for polyester synthetic fibers containing a solvent (S) (hereinafter referred to as a "two-part composition containing a second treatment agent"). Either one or both of the two-component first treatment agent and the two-component second treatment agent contain the inorganic acid compound (B). In addition, for the mixture of the two-part type first treatment agent and the two-part type second treatment agent, when the treatment agent is diluted with 1% by mass of water, the pH at 25° C. is in the range of 5.5 or more and 8.5 or less. It is in.

The mixture of the two-component first treating agent and the two-component second treating agent was obtained using the two-component second treating agent-containing composition obtained using water as the solvent (S). pH is measured by the following method.

When the mixture of the two-part type first treatment agent and the two-part type second treatment agent is diluted with water of 1% by mass or more as the treatment agent, the mixture is diluted with water of 1% by mass as the treatment agent, and then heated at 25°C. Measure the pH at

When the mixture of the two-component first processing agent and the two-component second processing agent is a water-diluted solution of less than 1% by mass as the processing agent, the resulting mixture is dried or concentrated, and then the mixture is used as the processing agent. The pH is measured at 25° C. with a 1 mass % water dilution.

When the mixture of the two-component first treating agent and the two-component second treating agent is obtained using a composition containing a two-component second treating agent containing a solvent other than water as the solvent (S), the following The method measures pH.

After removing the solvent from the mixture of the two-part type first treating agent and the two-part type second treating agent, the mixture is diluted with 1 mass % water as the treating agent, and the pH at 25° C. is measured. Removal of the solvent from the mixture can be done by heat treating the object at 105° C. for 2 hours.

The (poly)oxyalkylene derivative (A), the inorganic acid compound (B), the organic phosphoric ester compound (C), and the solvent (S) are the same as those described in the first embodiment.
(solvent)
The two-component first treating agent of the present embodiment is mixed with a solvent as necessary to form a two-component first treating agent-containing composition for polyester synthetic fibers (hereinafter referred to as "two-component first treating agent-containing composition ) may be prepared and stored or distributed in the form of a two-part first treatment agent-containing composition.

As the solvent, those exemplified in the first embodiment can be adopted. If the total content of the two-part first treating agent and the solvent in the composition containing the two-part first treating agent is 100 parts by mass, the two-part first treating agent should be contained in an amount of 10 parts by mass or more. is preferred.

The effects of the two-pack type first treatment agent of the second embodiment will be described. In addition to the effect of the said embodiment, in 2nd Embodiment, it has the following effects.
(2-1) The two-component first treatment agent of the second embodiment contains the (poly)oxyalkylene derivative (A) and, when used, the two-component second treatment agent containing the organic phosphate compound (C). Used in combination with a treatment agent. Therefore, it is possible to improve formulation stability, particularly storage stability, of the two-agent type first treatment agent. Further, by adjusting the mixing ratio with the two-pack type second treatment agent, the components of the obtained treatment agent can be adjusted. Also, only the two-pack type first treatment agent can be distributed separately from the two-pack type second treatment agent.

<Third Embodiment>
Next, a third embodiment embodying the two-part type second treatment agent of the present invention will be described. The following description focuses on differences from the above embodiment.

The two-pack type second treatment agent of the present embodiment contains an organic phosphoric acid ester compound (C). The two-component second treatment agent is a two-component first treatment agent containing the (poly)oxyalkylene derivative (A) at the time of use, or a two-component first treatment containing the (poly)oxyalkylene derivative (A). It is used in combination with a two-part first treating agent-containing composition containing an agent and a solvent (S). Either one or both of the two-component first treatment agent and the two-component second treatment agent contain the inorganic acid compound (B). Further, when the mixture of the two-part type first treatment agent and the two-part type second treatment agent is diluted with 1% by mass of water as the treatment agent, the pH at 25° C. is in the range of 5.5 to 8.5. It is in. In addition, when the mixture of the two-part first treatment agent and the two-part second treatment agent is obtained using the composition containing the two-part first treatment agent obtained by using the solvent (S), The pH is measured by a method similar to the method described in the second embodiment.

The (poly)oxyalkylene derivative (A), the inorganic acid compound (B), the organic phosphoric ester compound (C), and the solvent (S) are the same as those described in the first embodiment.
(solvent)
The two-component second processing agent of the present embodiment is mixed with a solvent as necessary to prepare a two-component second processing agent-containing composition, which is stored in the form of a two-component second processing agent-containing composition. Or you may circulate.

As the solvent, those exemplified in the first embodiment can be adopted. In the composition containing the two-part type second treatment agent, the two-part type first treatment agent should be contained in an amount of 10 parts by mass or more, assuming that the total content of the two-part type second treatment agent and the solvent is 100 parts by mass. is preferred.

The effects of the two-pack type second treatment agent of the third embodiment will be described. In addition to the effects of the above embodiments, the third embodiment has the following effects.
(3-1) In the two-part type second treatment agent of the third embodiment, the two-part type first treatment agent containing the organic phosphoric acid ester compound (C) and, when used, the (poly)oxyalkylene derivative (A) Used in combination with a treatment agent. Therefore, it is possible to improve the formulation stability, particularly the storage stability, of the two-agent type second treatment agent. Further, by adjusting the mixing ratio with the two-pack type first treatment agent, the components of the obtained treatment agent can be adjusted. Also, only the two-pack type second treatment agent can be distributed separately from the two-pack type first treatment agent.

<Fourth Embodiment>
Next, a fourth embodiment that embodies the three-pack type first treatment agent of the present invention will be described. The following description focuses on differences from the above embodiment.

The three-pack type first treatment agent of the present embodiment contains a (poly)oxyalkylene derivative (A). The three-part type first treatment agent is a three-part type second treatment agent containing the organic phosphate ester compound (C) at the time of use, or a three-part type second treatment agent containing the organic phosphate ester compound (C) and A three-part composition containing a second treatment agent for polyester synthetic fibers containing a solvent (S) (hereinafter referred to as a "three-part composition containing a second treatment agent") and an inorganic acid compound (B). A three-part third treating agent, or a three-part third treating agent-containing composition for polyester synthetic fibers containing a three-part third treating agent containing an inorganic acid compound (B) and a solvent (S) (hereinafter referred to as , "three-pack type third treatment agent-containing composition").

When a mixture of a 3-part type first treatment agent, a 3-part type second treatment agent, and a 3-part type third treatment agent is diluted with 1% by mass of water as a treatment agent, the pH at 25° C. is 5.5. It is in the range of 8.5 or less. A composition containing a three-part type second treating agent obtained by using a solvent (S) to obtain a mixture of a three-part type first treating agent, a three-part type second treating agent, and a three-part type third treating agent When it is obtained using a product or a three-part type third treatment agent-containing composition, the pH is measured by the same method as the method described in the second embodiment.

The (poly)oxyalkylene derivative (A), the inorganic acid compound (B), the organic phosphoric ester compound (C), and the solvent (S) are the same as those described in the first embodiment.
(solvent)
The three-part first treatment agent of the present embodiment is mixed with a solvent (S) as necessary to form a composition containing a three-part first treatment agent for polyester synthetic fibers (hereinafter referred to as "three-part first treatment agent containing composition”) may be prepared and stored or distributed in the form of a three-part first treatment agent-containing composition.

As the solvent (S), those exemplified in the first embodiment can be adopted. In the composition containing the 3-part type first treatment agent, the total content of the 3-part type first treatment agent and the solvent is 100 parts by mass, and the 3-part type first treatment agent is contained in an amount of 10 parts by mass or more. is preferred.

The effects of the three-pack type first treatment agent of the fourth embodiment will be described. In addition to the effects of the above embodiments, the fourth embodiment has the following effects.
(4-1) The three-component first treatment agent of the fourth embodiment contains the (poly)oxyalkylene derivative (A) and, when used, the three-component second treatment agent containing the organic phosphate compound (C). It is used in combination with a three-component third treatment agent containing a treatment agent and an inorganic acid compound (B). Therefore, it is possible to improve formulation stability, particularly storage stability, of the 3-dose type first treatment agent. Further, by adjusting the mixing ratio with the 3-part type second and third treatment agents, the components of the resulting treatment agent can be adjusted. In addition, only the three-part type first treatment agent can be distributed separately from the three-part type second and third treatment agents.

<Fifth Embodiment>
Next, a description will be given of a fifth embodiment of the three-pack type second treatment agent of the present invention. The following description focuses on differences from the above embodiment.

The three-pack type second treatment agent of the present embodiment contains an organic phosphoric acid ester compound (C). The three-part type second treatment agent is a three-part type first treatment agent containing the (poly)oxyalkylene derivative (A) at the time of use, or a three-part type first treatment agent containing the (poly)oxyalkylene derivative (A). A three-part type first treating agent-containing composition containing an agent and a solvent (S), and a three-part type third treating agent containing an inorganic acid compound (B), or a three-part type containing an inorganic acid compound (B). It is used in combination with a 3-pack type 3rd treatment agent-containing composition containing a type 3rd treatment agent and a solvent (S).

When a mixture of a 3-part type first treatment agent, a 3-part type second treatment agent, and a 3-part type third treatment agent is diluted with 1% by mass of water as a treatment agent, the pH at 25° C. is 5.5. It is in the range of 8.5 or less. A composition containing a three-part first treatment agent obtained by using a solvent (S) is a mixture of a three-part first treatment agent, a three-part second treatment agent, and a three-part third treatment agent. When it is obtained using a product or a three-part type third treatment agent-containing composition, the pH is measured by the same method as the method described in the second embodiment.

The (poly)oxyalkylene derivative (A), the inorganic acid compound (B), the organic phosphoric ester compound (C), and the solvent (S) are the same as those described in the first embodiment.
(solvent)
The three-part second treatment agent of the present embodiment is mixed with a solvent (S) if necessary to prepare a three-part second treatment agent-containing composition. may be stored or distributed.

As the solvent (S), those exemplified in the first embodiment can be adopted. In the composition containing the 3-part type second treatment agent, the total content of the 3-part type second treatment agent and the solvent is 100 parts by mass, and the 3-part type second treatment agent is contained in an amount of 10 parts by mass or more. is preferred.

The effects of the three-pack type second treatment agent of the fifth embodiment will be described. In addition to the effect of the said embodiment, in 5th Embodiment, it has the following effects.
(5-1) In the three-part type second treatment agent of the fifth embodiment, the three-part type first treatment agent containing the organic phosphoric acid ester compound (C) and the (poly)oxyalkylene derivative (A) when used It is used in combination with a three-component third treatment agent containing a treatment agent and an inorganic acid compound (B). Therefore, it is possible to improve formulation stability, particularly storage stability, of the 3-dose type second treatment agent. Also, by adjusting the mixing ratio with the 3-part type first and third treatment agents, the components of the resulting treatment agent can be adjusted. Also, only the three-pack type second treatment agent can be distributed separately from the three-pack type first and third treatment agents.

<Sixth Embodiment>
Next, a sixth embodiment that embodies the three-pack type third treatment agent of the present invention will be described. The following description focuses on differences from the above embodiment.

The three-part type third treatment agent of the present embodiment contains an inorganic acid compound (B). The three-part type third treatment agent is a three-part type first treatment agent containing the (poly)oxyalkylene derivative (A) at the time of use, or a three-part type first treatment agent containing the (poly)oxyalkylene derivative (A) A three-component first processing agent-containing composition containing a processing agent and a solvent (S), and a three-component second processing agent containing an organic phosphoric acid ester compound (C) or an organic phosphoric acid ester compound (C) and a three-part second treating agent-containing composition containing a solvent (S).

When a mixture of a 3-part type first treatment agent, a 3-part type second treatment agent, and a 3-part type third treatment agent is diluted with 1% by mass of water as a treatment agent, the pH at 25° C. is 5.5. It is in the range of 8.5 or less. A composition containing a three-part first treatment agent obtained by using a solvent (S) is a mixture of a three-part first treatment agent, a three-part second treatment agent, and a three-part third treatment agent. or a three-pack type second treatment agent-containing composition, the pH is measured by a method similar to the method described in the second embodiment.

The (poly)oxyalkylene derivative (A), the inorganic acid compound (B), the organic phosphoric ester compound (C), and the solvent (S) are the same as those described in the first embodiment.
(solvent)
The three-part type third treating agent of the present embodiment is mixed with a solvent (S) if necessary to prepare a three-part type third treating agent-containing composition. may be stored or distributed.

As the solvent (S), those exemplified in the first embodiment can be adopted. In the composition containing the 3-part type 3rd treatment agent, if the total content of the 3-part type 3rd treatment agent and the solvent is 100 parts by mass, the 3-part type 3rd treatment agent should be contained in an amount of 10 parts by mass or more. is preferred.

The effects of the three-pack type third treatment agent of the sixth embodiment will be described. In addition to the effect of the said embodiment, in 6th Embodiment, it has the following effects.
(6-1) The three-part type third treatment agent of the sixth embodiment contains the inorganic acid compound (B), and when used, the three-part type first treatment agent contains the (poly)oxyalkylene derivative (A). , and an organic phosphoric acid ester compound (C). Therefore, it is possible to improve formulation stability, particularly storage stability, of the three-dose type third treatment agent. In addition, by adjusting the mixing ratio with the three-pack type first and second treatment agents, the components of the resulting treatment agent can be adjusted. Also, only the three-pack type third treatment agent can be distributed separately from the three-pack type first and second treatment agents.

<Seventh embodiment>
Next, a seventh embodiment of the method for treating polyester synthetic fibers of the present invention (hereinafter referred to as "method for treating fibers") will be described.

In the fiber treatment method of the present embodiment, in the case of a one-component treatment agent, a diluent containing a solvent and the treatment agent of the first embodiment is applied to polyester synthetic fibers. A method for preparing the diluent includes, for example, a method of adding the processing agent or processing agent-containing composition of the first embodiment to a solvent. The diluent is preferably prepared by adding the treating agent or treating agent-containing composition of the first embodiment to water.

In the method for treating fibers of the present embodiment, in the case of a two-part treatment agent, a solvent, a two-part first treatment agent of the second embodiment, and a two-part second treatment agent of the third embodiment are used. It is characterized by applying a diluted solution of the processing agent contained to the polyester synthetic fiber. A method of preparing a diluent includes, for example, adding a two-part first treatment agent or a two-part first treatment agent-containing composition and a two-part second treatment agent or a two-part second treatment agent-containing composition to a solvent. addition method. The diluent is prepared by adding a two-part first treatment agent or a composition containing a two-part first treatment agent and a two-part second treatment agent or a composition containing a two-part second treatment agent to water. preferably. The ratio of the content ratio of the two-component first processing agent and the two-component second processing agent is such that the mass ratio of the non-volatile matter is two-component first processing agent and the two-component second processing agent = 95/5 to 5. /95 is preferred. Operability can be improved by being defined within this range. The non-volatile content is obtained from the mass of the absolute dry matter obtained by heat-treating the object at 105° C. for 2 hours to sufficiently remove volatile substances (the same applies hereinafter).

In the fiber treatment method of the present embodiment, in the case of a three-part treatment agent, a solvent, a three-part first treatment agent of the fourth embodiment, a three-part second treatment agent of the fifth embodiment, It is characterized by applying a diluted treatment agent solution containing the 3-pack type third treatment agent of the sixth embodiment to a polyester synthetic fiber. A method of preparing a diluent includes, for example, a solvent, a three-part first treatment agent or a composition containing a three-part first treatment agent, a three-part second treatment agent or a composition containing a three-part second treatment agent, and A method of adding a three-pack type third treatment agent or a composition containing a three-pack type third treatment agent can be mentioned. The diluents are a three-part first treatment agent or a composition containing a three-part first treatment agent, a three-part second treatment agent or a composition containing a three-part second treatment agent, and a three-part third treatment agent in water. It is preferably prepared by adding a treating agent or a three-pack type third treating agent-containing composition.

Examples of the solvent used for preparing the diluent include those exemplified in the first embodiment. From the viewpoint of operability, etc., the diluent preferably has a processing agent concentration of 0.1% by mass or more and 10% by mass or less.

A form in which a two-part type first treatment agent and a two-part type second treatment agent are used in combination, or a form in which a three-part type first treatment agent, a three-part type second treatment agent and a three-part type third treatment agent are used in combination can arbitrarily change the mixing ratio of each agent. Therefore, even under different manufacturing conditions such as differences in manufacturing equipment or climate such as temperature and humidity, processing agents or dilutions are required to fine-tune the blending ratio and always provide optimal fiber characteristics or fiber manufacturing characteristics. It becomes easy to prepare a liquid.

In order to emulsify the processing agent, each processing agent or composition containing the processing agent and a solvent may be mixed and stirred using a known stirrer such as a homomixer, homogenizer, colloid mill, line mixer and the like.

The fiber treatment method is a method in which the diluted liquid obtained as described above is applied to the fibers in, for example, at least one of the spinning process, the drawing process, and the finishing process of polyester synthetic fibers.

The fibers to which the diluent is applied include polyester-based synthetic fibers. Specific examples of polyester synthetic fibers include polyethylene terephthalate (PET), polytrimethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polylactic acid, and composite fibers containing these polyester resins. be done.

Applications of the fibers are not particularly limited, and examples thereof include spinning, spun yarn production, short fibers, long fibers, non-woven fabrics, and wadding. Short fibers generally correspond to staples and do not include long fibers generally called filaments. The length of the short fibers is not particularly limited as long as it corresponds to short fibers in this technical field, and is, for example, 100 mm or less. Among these, the diluent of the present invention is preferably applied to polyester short fibers and polyester synthetic fibers for manufacturing spun yarns.

Although there is no particular limitation on the ratio of the diluent attached to the fiber, the final solid content of the diluent is preferably 0.01% by mass or more and 10% by mass or less, more preferably 0.1% by mass or more. It is made to adhere so that the ratio is 3% by mass or less. With such a configuration, the effect of each component can be effectively exhibited. In addition, the method of attaching the diluent is not particularly limited, and known methods depending on the type, form, application, etc. of the fiber, such as roller lubrication, guide lubrication using a metering pump, immersion lubrication, spray lubrication, and the like. can be adopted. When the immersion oiling method is used, the immersion time is preferably 1 minute or more and 5 minutes or less.

The fibers to which the diluent has been applied may be dried or heat treated using known methods. Solvents such as water are volatilized by drying or heat treatment, and fibers to which the treating agent or the components contained in the first treating agent, second treating agent, and third treating agent are attached are obtained.

The effects of the fiber treatment method of the seventh embodiment will be described. The seventh embodiment has the following effects in addition to the effects of the above embodiments.
(7-1) The fiber treatment method of the seventh embodiment is a method in which a diluent is applied to the fibers in, for example, the spinning process, the drawing process, or the finishing process. In particular, by adding the treating agent or treating agent-containing composition of the first embodiment to water, a diluent having excellent emulsification stability can be obtained. Alternatively, it is prepared by adding a two-part first treatment agent or a composition containing a two-part first treatment agent and a second treatment agent or a composition containing a two-part second treatment agent to water. A diluent having excellent emulsification stability can be obtained. Alternatively, the diluent may be a 3-part first treatment agent or a composition containing a 3-part first treatment agent, a 3-part second treatment agent or a composition containing a 3-part second treatment agent, and a 3-part treatment agent in water. By adding a third treatment agent or a three-pack type third treatment agent-containing composition, a diluent having excellent emulsification stability can be obtained. Therefore, the effects of each component for spinning, manufacturing spun yarn, short fibers, long fibers, non-woven fabrics, wadding, etc. can be effectively exhibited.

Note that the above embodiment may be modified as follows. The above embodiments and the following modifications can be combined with each other within a technically consistent range.
The method for preparing the diluent of the treatment agent in the above embodiment is not particularly limited, and a method other than the preparation method described in the section on the method for treating fibers in the seventh embodiment may be employed.

- In each treatment agent, each composition, or diluent of the above-described embodiments, other ingredients are added to maintain the quality of each treatment agent, each composition, or diluent within a range that does not impair the effects of the present invention. As, other solvents, stabilizers, antistatic agents, binders, antioxidants, UV absorbers, organic acids, surfactants other than the above, etc. good. From the viewpoint of efficiently exhibiting the effects of the present invention, the amount of other components other than the solvent that are usually used in processing agents is preferably 10% by mass or less in each processing agent. Also, other components may be stored as separate agents from the above-described treatment agents.

Examples will be given below in order to make the configuration and effect of the present invention more specific, but the present invention is not limited to these examples. In the following examples and comparative examples, parts means parts by weight, and % means % by weight, unless otherwise specified.

Test category 1 (preparation of one-dose treatment agent)
(Example 1-1)
As shown in Table 1, about 67.2 parts (%) of the (poly)oxyalkylene derivative (A-1) shown in Table 2 as the (poly)oxyalkylene derivative (A), and as the inorganic acid compound (B) Sulfuric acid (B-1) about 3.9 parts (%), stearyl phosphate as an organic phosphoric ester compound (C), and its potassium salt (C-4) about 28.8 parts (%), other components ( A processing agent of Example 1-1 containing 1 part of amino-modified polydimethylsiloxane (D-2) as D) per 100 parts of the total of components (A) to (C) was prepared.

(Examples 1-2 to 1-21, Comparative Examples 1-1 to 1-9)
The treating agents of Examples 1-2 to 1-21 and Comparative Examples 1-1 to 1-9 were prepared in the same manner as the treating agent of Example 1-1, and the (poly)oxyalkylene derivative (A), Inorganic acid compound (B), organic phosphoric acid ester compound (C), and other component (D) were prepared so as to contain the proportions shown in Table 1.

The type and content of the (poly)oxyalkylene derivative (A), the type and content of the inorganic acid compound (B), the type and content of the organic phosphoric ester compound (C), and the type and content of the other component (D) The contents are shown in the "(poly)oxyalkylene derivative (A)" column, the "inorganic acid compound (B)" column, the "organic phosphate ester compound (C)" column, and the "other component (D)" column in Table 1. are shown respectively. The content of the other component (D) is the total content of the (poly)oxyalkylene derivative (A), the inorganic acid compound (B), and the organic phosphoric acid ester compound (C) in the treatment agent, which is 100 parts. The compounding amount (parts) in the case of

(pH of treatment agent)
The treatment agent of each example was diluted with warm water of about 70° C. to prepare a 1% water dilution as the treatment agent. The pH at 25° C. of the prepared 1% water dilution was measured. The measured values are shown in the column "pH of 1% water dilution" in Table 1.

表１に記載する（ポリ）オキシアルキレン誘導体（Ａ）、無機酸化合物（Ｂ）、有機リン酸エステル化合物（Ｃ）、その他成分（Ｄ）の詳細は以下のとおりである。

Details of the (poly)oxyalkylene derivative (A), the inorganic acid compound (B), the organic phosphoric acid ester compound (C), and the other component (D) shown in Table 1 are as follows.

((Poly)oxyalkylene derivative (A))
A-1 to A-18 described in Table 2 below were used.

表２に示される成分１～２５の詳細は、以下の通りである。

The details of components 1-25 shown in Table 2 are as follows.

Component 1: Compound obtained by adding 2 moles of ethylene oxide to 1 mole of decyl alcohol and then adding 5 moles of propylene oxide Component 2: Adding 10 moles of ethylene oxide to 1 mole of C12-13 branched alcohol Compound Component 3: A compound obtained by randomly adding 6 moles of ethylene oxide and 2 moles of propylene oxide to 1 mole of C12-13 branched alcohol Component 4: 4 moles of ethylene oxide and 4 moles of propylene oxide per mole of C11-14 alcohol Component 5: A compound obtained by randomly adding 4 mol of ethylene oxide and 2 mol of propylene oxide to 1 mol of C12-13 branched alcohol and then adding 2 mol of ethylene oxide Component 6: Tridecyl alcohol Compound in which 6 mol of ethylene oxide and 2 mol of propylene oxide are randomly added to 1 mol Component 7: A compound in which 3 mol of propylene oxide is added to 1 mol of isodecyl alcohol, and then 4 mol of ethylene oxide is added. Component 8: A compound in which 5 mol of ethylene oxide and 2 mol of propylene oxide are randomly added to 1 mol of isodecyl alcohol Component 9: 5 mol of ethylene oxide is added to 1 mol of isotridecyl alcohol, and then propylene oxide. Component 10: Compound obtained by adding 4 mol of ethylene oxide to 1 mol of dodecyl alcohol Component 11: Compound obtained by adding 7 mol of ethylene oxide to 1 mol of dodecyl alcohol Component 12: Dodecyl alcohol Compound obtained by adding 10 moles of ethylene oxide to 1 mole of dodecyl alcohol Component 13: Compound obtained by adding 5 moles of ethylene oxide to 1 mole of dodecyl alcohol and then adding 5 moles of propylene oxide Component 14: 1 mole of dodecylamine Component 15: A compound obtained by reacting 1 mol of dodecylamine with 12 mol of ethylene oxide Component 16: A compound obtained by reacting 1 mol of dodecylamine with 15 mol of ethylene oxide Component 17: A compound obtained by adding 10 mol of ethylene oxide to 1 mol of octadecyl alcohol. Component 18: A compound obtained by adding 10 mol of ethylene oxide to 1 mol of lauric acid. Compound obtained by adding 10 mol of len oxide Component 20: Compound obtained by adding 15 mol of ethylene oxide to 1 mol of coconut alkylamine Component 22: Addition of 84 mol of propylene oxide to 1 mol of diglycerin, followed by addition of ethylene Compound obtained by adding 23 moles of oxide Component 23: Compound obtained by adding 43 moles of propylene oxide to 1 mole of propylene glycol and then adding 6 moles of ethylene oxide Component 24: Adding 10 moles of ethylene oxide to 1 mole of nonylphenol Mole-added compound Component 25: A compound obtained by reacting 1 mol of dodecylamine with 10 mol of ethylene oxide and a salt of phosphoric acid (inorganic acid compound (B))
B-1: sulfuric acid B-2: nitric acid B-3: hydrochloric acid B-4: potassium hydrogen sulfate B-5: potassium sulfate (organic phosphate ester compound (C))
C-1 to C-10 described in Table 3 below were used. As compounds corresponding to comparative examples, rc-1 and rc-2 were used. The organic phosphate ester compound (C) shown in Table 3 below is obtained by partially neutralizing various organic phosphate esters with KOH, and is a mixture of an organic phosphate ester and a potassium salt of the organic phosphate ester. is. The same applies to organic phosphoric acid ester compounds D-6 and D-8, which will be described later.

有機リン酸エステル化合物（Ｃ）の酸価の測定方法は、以下に示す通りである。

The method for measuring the acid value of the organic phosphoric acid ester compound (C) is as follows.

The organic phosphate ester 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 by potentiometric method. Calculate from Equation 1. The results are shown in the "acid value detected from organic phosphate compound (C)" column in Table 3.

数１において、
ｆ：０．１ｍｏｌ／Ｌの水酸化カリウムメタノール標準溶液のファクター
Ｓ：有機リン酸エステル化合物（Ｃ）採取量（ｇ）
Ｒ：変曲点までの０．１ｍｏｌ／Ｌの水酸化カリウムメタノール標準溶液の使用料（ｍＬ）
（その他成分（Ｄ））
Ｄ－１：ポリジメチルシロキサン
Ｄ－２：アミノ変性ポリジメチルシロキサン
Ｄ－３：オレイン酸カリウム
Ｄ－４：ポリビニルアルコール（平均重合度３００、鹸化度８０）
Ｄ－５：ステアリルアルコール
Ｄ－６：ヘキシルリン酸エステル、及びそのカリウム塩（酸価１０．０［ＫＯＨ－ｍｇ／ｇ］）
Ｄ－７：乳酸カリウム
Ｄ－８（ｒｃ－１）：オクチルリン酸エステル、及びそのカリウム塩（酸価２７．５［ＫＯＨ－ｍｇ／ｇ］）
試験区分２（湿潤時金属摩擦）
試験区分１において調製された各処理剤を約７０℃の温水で希釈し、処理剤として５％の希釈液を調製した。作製した５％希釈液８０ｍＬを金属バッド（縦６０ｍｍ×横２３０ｍｍ×高さ２０ｍｍ）に入れ、固定した。１ｋｇのおもり（縦３０ｍｍ×横９０ｍｍ×高さ４５ｍｍ）の底面に、底面と同じサイズ（縦３０ｍｍ×横９０ｍｍ×高さ４５ｍｍ）のポリエステルスパンボンド不織布を貼った。希釈液が入っている金属バッドに不織布を貼ったおもりを置いた。各測定用サンプルについて、最大荷重容量が５０Ｎであるロードセルを備えた引張試験機（島津製作所社製、オートグラフ：型式ＡＧＳーＸ）を用い２０℃－６０％ＲＨ雰囲気下、水平速度１００ｍｍ／ｍｉｎで引っ張り時の張力を測定した。なお、摩擦の測定は、再現性又は正確性の観点から５％希釈液の調整から１２時間以内に測定した。結果を表１の「湿潤時金属摩擦」欄に示す。表１中の「－」はＢ成分が含まれていないため評価を行っていない。

In Equation 1,
f: Factor of 0.1 mol/L potassium hydroxide methanol standard solution S: Amount (g) of organic phosphoric acid ester compound (C) collected
R: 0.1 mol / L potassium hydroxide methanol standard solution usage (mL) up to the inflection point
(Other components (D))
D-1: Polydimethylsiloxane D-2: Amino-modified polydimethylsiloxane D-3: Potassium oleate D-4: Polyvinyl alcohol (average degree of polymerization 300, degree of saponification 80)
D-5: Stearyl alcohol D-6: Hexyl phosphate ester, and potassium salt thereof (acid value 10.0 [KOH-mg/g])
D-7: potassium lactate D-8 (rc-1): octyl phosphate, and its potassium salt (acid value 27.5 [KOH-mg/g])
Test category 2 (wet metal friction)
Each treatment agent prepared in test section 1 was diluted with warm water of about 70°C to prepare a 5% diluted solution as a treatment agent. 80 mL of the prepared 5% diluted solution was placed in a metal pad (length 60 mm×width 230 mm×height 20 mm) and fixed. A polyester spunbond nonwoven fabric having the same size as the bottom surface (30 mm length×90 mm width×45 mm height) was attached to the bottom surface of a weight of 1 kg (30 mm length×90 mm width×45 mm height). A weight attached with a non-woven fabric was placed on the metal pad containing the diluent. For each measurement sample, a tensile tester (manufactured by Shimadzu Corporation, Autograph: Model AGS-X) equipped with a load cell with a maximum load capacity of 50 N is used at a horizontal speed of 100 mm / min in an atmosphere of 20 ° C.-60% RH. The tension at the time of pulling was measured. Friction was measured within 12 hours from the preparation of the 5% diluted solution from the viewpoint of reproducibility or accuracy. The results are shown in Table 1, "Wet Metal Friction" column. "-" in Table 1 was not evaluated because the B component was not included.

・ Evaluation criteria for wet metal friction ◎ (good): ratio of friction N when component B is not included and friction M at measurement M / N ≤ 0.98
× (defective): ratio of friction N when B component is not contained and friction M at the time of measurement M / N > 0.98
Test category 3 (stickiness)
5 g of each treatment agent prepared in test section 1 was placed in a glass petri dish (inner diameter 9.5 cm). At this time, the treating agent was made to spread uniformly in the glass petri dish. The temperature was adjusted for 24 hours under conditions of 30° C. and 70% RH, and the appearance of the treatment agent after temperature adjustment was visually confirmed and evaluated according to the following criteria. The results are shown in Table 1, "Adhesiveness" column.

・ Adhesive evaluation criteria ◎ (Good): Appearance after temperature control is solid and not sticky even when touched by hand ○ (Possible): Appearance after temperature control is solid, but by hand If it is sticky to the touch × (bad): The appearance after temperature control is liquid or gel, and if it is sticky to the touch Test category 4 (fiber strength)
Each treatment agent prepared in test section 1 was diluted with warm water of about 70°C to prepare a 0.5% diluted solution as a treatment agent. The prepared diluted solution was applied by a spray method to polyester cotton (1.3 de x 38 mm) to which no treatment agent was applied so that the adhesion amount of the treatment agent to the polyester cotton was 0.15%. The polyester cotton to which the treatment agent was applied was dried in a drier at 80° C. for 2 hours. The initial strength was measured with a strength and elongation measuring machine, and the strength after 3 months of placing the same fiber in an atmosphere of 50° C. and 80% RH for 3 months was measured with a strength and elongation measuring machine. The strength after 3 months was compared with the initial strength and evaluated according to the following criteria. The results are shown in the "fiber strength" column of Table 1.

・ Evaluation criteria for fiber strength ◎ (good): strength of 95% or more relative to initial strength ○ (acceptable): strength of 90% or more and less than 95% relative to initial strength × (poor): relative to initial strength Less than 90% strength test category 5 (emulsion stability)
Each treatment agent prepared in test section 1 was diluted with warm water of about 70°C to prepare a 1% diluted solution as a treatment agent. The prepared 1% diluted solution was allowed to stand at 50° C. for 24 hours, and the appearance of the diluted solution after standing was visually confirmed and evaluated according to the following criteria. The results are shown in the "emulsion stability" column of Table 1.

・Evaluation criteria for emulsification stability ◎ (Good): When no precipitate occurs and no precipitate is observed in the lower layer. ○ (Fair): Precipitate occurs or precipitate is observed in the lower layer. If it is resolved by manual stirring × (bad): If precipitation occurs or precipitation is seen in the lower layer, and it is not resolved even if it is manually stirred using a stirring rod Test Category 6 (2 dosage form No. 1 Preparation of processing agent)
(Two-component first treatment agent (IA-1))
As shown in Table 4, 94.5 parts (%) of the (poly)oxyalkylene derivative (A-1) shown in Table 2 as the (poly)oxyalkylene derivative (A), and sulfuric acid as the inorganic acid compound (B) A two-component first treatment agent (IA-1) containing 5.5 parts (%) of (B-1) was prepared.

(2-component first treatment agent (IA-2) to (IA-21), 2-component first treatment agent (IB-1) to (IB-18), 2-component First processing agent (IC-1) to (IC-2))
A (poly)oxyalkylene derivative (A) and an inorganic acid compound (B) were prepared in the same manner as the two-part type first treatment agent (IA-1) so as to contain the proportions shown in Table 4.

The type and content of the (poly)oxyalkylene derivative (A) and the type and content of the inorganic acid compound (B) are determined in the column "(poly)oxyalkylene derivative (A)" in Table 4, "inorganic acid compound (B )” column.

試験区分７（２剤型第２処理剤の調製）
（２剤型第２処理剤（II－Ａ－１））
表５に示されるように、有機リン酸エステル化合物（Ｃ）としてセチルリン酸エステル、及びそのカリウム塩（Ｃ－１）１００部（％）を含む２剤型第２処理剤（II－Ａ－１）を調製した。

Test section 7 (preparation of two-component second treatment agent)
(Two-agent type second treatment agent (II-A-1))
As shown in Table 5, a two-component second treatment agent (II-A-1) containing cetyl phosphate as an organic phosphate compound (C) and 100 parts (%) of its potassium salt (C-1) ) was prepared.

(Two-part type second treatment agents (II-A-2) to (II-A-10), two-part type second treatment agents (II-B-1) to (II-B-21), two-part type Second processing agents (II-C-1) to (II-C-2))
An organic phosphoric ester compound (C) and an inorganic acid compound (B) were prepared in the proportions shown in Table 5 in the same manner as the two-part type second treatment agent (II-A-1).

The type and content of the organic phosphoric acid ester compound (C) and the type and content of the inorganic acid compound (B) are determined in Table 5 in the "Organic phosphoric acid ester compound (C)" column and the "Inorganic acid compound (B)" column. shown in each column.

試験区分８（製剤安定性の評価）
・２剤型第１処理剤の製剤安定性評価
２剤型第１処理剤と溶媒（Ｓ）として水を、第１処理剤：水＝９５：５の質量比で含有する２剤型第１処理剤含有組成物を２５℃にて３日間保管した。以下の基準で製剤安定性を評価した。結果を表４の「製剤安定性」欄に示す。

Test Category 8 (Evaluation of Formulation Stability)
・Evaluation of formulation stability of two-component first processing agent The treating agent-containing composition was stored at 25° C. for 3 days. Formulation stability was evaluated according to the following criteria. The results are shown in the "formulation stability" column of Table 4.

・ Formulation stability evaluation of two-component second treatment agent Two-component second treatment agent containing water as a two-component second treatment agent and solvent (S) at a mass ratio of second treatment agent: water = 40:60 The treating agent-containing composition was stored at 25° C. for 3 days. Formulation stability was evaluated according to the following criteria. The results are shown in the "formulation stability" column of Table 5.

・Evaluation criteria for formulation stability (two-component first processing agent-containing composition and two-component second processing agent-containing composition)
○ (Good): No gelation × (Not good): Gelation Test category 9 (preparation of treatment agent from two-part type first treatment agent and two-part type second treatment agent)
(Example 2-A-1)
71.2% (parts) of the two-component first treatment agent (IA-1) and 28.8% (parts) of the two-component second treatment agent (II-A-4) shown in Table 6 In addition, 1 part of a processing agent (two-component type III-1) as other processing agents (D) shown in Table 7 per 100 parts of the total of the two-component type first processing agent and the two-component type second processing agent were mixed to prepare the processing agent of Example 2-A-1.

(Examples (2-A-2) to (2-A-21), Examples (2-B-1) to (2-B-21), Examples (2-W-1) to (2- W-2))
In the same manner as in Example 2-A-1, in addition to the two-part type first treating agent and the two-part type second treating agent shown in Table 6, other treating agents (D) shown in Table 7 are added if necessary. These were mixed to prepare a treatment agent for each example.

The type and mass ratio of the two-component first processing agent, the type and mass ratio of the two-component second processing agent, and the type and mass ratio of the other processing agent (D) are shown in Table 6, "Two-component first processing agent column, "Two-part type second treatment agent" column, and "Other treatment agent (D)" column. The content of the other treatment agent (D) indicates the amount (parts) when the total amount of the two-part type first treatment agent and the two-part type second treatment agent is 100 parts.

(pH of treatment agent)
A two-pack type first treatment agent and a two-pack type second treatment agent shown in Table 6 were mixed and diluted with warm water of about 70°C to prepare a 1% water dilution as a treatment agent. In addition, in an example of using the other treatment agent (D), after mixing the two-part type first treatment agent, the two-part type second treatment agent, and the other treatment agent (D), the mixture was diluted with hot water at about 70°C. and diluted with 1% water as a treatment agent. The pH at 25° C. of the prepared 1% water dilution of each example was measured. The measured values are shown in the column "pH of 1% water dilution" in Table 6.

表６に記載するその他処理剤（Ｄ）は、下記の表７に記載される処理剤（２剤型III－１）～（２剤型III－６）を使用した。処理剤（２剤型III－１）～（２剤型III－６）は、その他成分（Ｄ）を表７に示した割合で含むように調製した。

As other processing agents (D) listed in Table 6, the processing agents (2-component type III-1) to (2-component type III-6) described in Table 7 below were used. Processing agents (2-dose type III-1) to (2-dose type III-6) were prepared so as to contain the other component (D) in the ratio shown in Table 7.

試験区分１０（２剤型処理剤の評価）
得られた各例の処理剤を用いて、実施例１と同様の方法にて湿潤時金属摩擦、粘着性、繊維強度、乳化安定性について評価した。なお、湿潤時金属摩擦、粘着性、及び乳化安定性の評価に用いた希釈液の調製方法は、試験区分９の（ｐＨ測定）欄に記載の方法と同様にて、２剤型第１処理剤と２剤型第２処理剤と、必要によりその他処理剤（Ｄ）とを混合した後、水で希釈することにより、処理剤の希釈液を調製した。結果を表６の「湿潤時金属摩擦」欄、「粘着性」欄、「繊維強度」欄、「乳化安定性」欄にそれぞれ示す。

Test section 10 (evaluation of two-component treatment agent)
Using the obtained treatment agent of each example, wet metal friction, adhesiveness, fiber strength, and emulsion stability were evaluated in the same manner as in Example 1. In addition, the method for preparing the diluted solution used for evaluating wet metal friction, adhesiveness, and emulsion stability was the same as the method described in the (pH measurement) column of test section 9. A diluted solution of the treatment agent was prepared by mixing the agent, the two-part type second treatment agent, and, if necessary, the other treatment agent (D), and then diluting the mixture with water. The results are shown in Table 6, "wet metal friction", "tackiness", "fiber strength", and "emulsion stability".

Test section 11 (preparation of 3-dosage first treatment agent)
(3-agent type first treatment agent (I-1))
As shown in Table 8, a three-component first treatment agent (I -1) was prepared.

(Three dosage type first treatment agents (I-2) to (I-18))
The (poly)oxyalkylene derivative (A) was prepared in the proportion shown in Table 8 in the same manner as the three-component first treatment agent (I-1).

The type and content of the (poly)oxyalkylene derivative (A) are shown in the "(poly)oxyalkylene derivative (A)" column of Table 8.

試験区分１２（３剤型第２処理剤の調製）
（３剤型第２処理剤（II－１））
表９に示されるように、有機リン酸エステル化合物（Ｃ）としてセチルリン酸エステル、及びそのカリウム塩（Ｃ－１）１００部（％）を含む３剤型第２処理剤（II－１）を調製した。

Test Section 12 (Preparation of 3-dosage second treatment agent)
(3-agent type second treatment agent (II-1))
As shown in Table 9, a three-component second treatment agent (II-1) containing cetyl phosphate as an organic phosphate compound (C) and 100 parts (%) of its potassium salt (C-1) was used. prepared.

(Three-agent type second treatment agent (II-2) to (II-10))
In the same manner as the three-part type second treatment agent (II-1), it was prepared so as to contain the organic phosphoric acid ester compound (C) in the ratio shown in Table 9.

The type and content of the organic phosphoric acid ester compound (C) are shown in Table 9 in the "organic phosphoric acid ester compound (C)" column.

試験区分１３（３剤型第３処理剤の調製）
（３剤型第３処理剤（III－１））
表１０に示されるように、無機酸化合物（Ｂ）として硫酸（Ｂ－１）１００部（％）を含む３剤型第３処理剤（III－１）を調製した。

Test section 13 (preparation of 3-dosage third treatment agent)
(3-component third treatment agent (III-1))
As shown in Table 10, a three-component third treatment agent (III-1) containing 100 parts (%) of sulfuric acid (B-1) as the inorganic acid compound (B) was prepared.

(Three agent type third treatment agents (III-2) to (III-5))
In the same manner as the 3-part type third treatment agent (III-1), it was prepared so as to contain the inorganic acid compound (B) in the ratio shown in Table 10.

The type and content of the inorganic acid compound (B) are shown in the "Inorganic acid compound (B)" column of Table 10.

試験区分１４（製剤安定性の評価）
・３剤型第１処理剤の製剤安定性評価
３剤型第１処理剤と溶媒（Ｓ）として水を、第１処理剤：水＝９５：５の質量比で含有する３剤型第１処理剤含有組成物を２５℃にて３日間保管した。以下の基準で製剤安定性を評価した。結果を表８の「製剤安定性」欄に示す。

Test category 14 (evaluation of formulation stability)
・Evaluation of formulation stability of 3-dosage-type first treatment agent The treating agent-containing composition was stored at 25° C. for 3 days. Formulation stability was evaluated according to the following criteria. The results are shown in the "formulation stability" column of Table 8.

・Evaluation of formulation stability of 3-component second treatment agent 3-component second treatment agent containing water as a 3-component second treatment agent and solvent (S) at a mass ratio of 2nd treatment agent:water = 40:60 The treating agent-containing composition was stored at 25° C. for 3 days. Formulation stability was evaluated according to the following criteria. The results are shown in the "formulation stability" column of Table 9.

・Evaluation of formulation stability of 3-dosage type 3rd treatment agent The treating agent-containing composition was stored at 25° C. for 3 days. Formulation stability was evaluated according to the following criteria. The results are shown in the "formulation stability" column of Table 10.

・Evaluation criteria for formulation stability (three-dose type first treatment agent-containing composition, three-dose type second treatment agent-containing composition, three-dose type third treatment agent-containing composition)
○ (good): when it does not gel × (impossible): when it gels preparation)
(Example 3-1)
3-dosage type first treatment agent (I-1) 67.2% (part), 3-dosage type 2nd treatment agent (II-1) 3.9% (part), and 3-dosage type No. In addition to 28.8% (parts) of 3 processing agents (III-4), other processing agents (D) shown in Table 12 (3-agent type IV-2) were used as 3-agent type 1st processing agents to 3 A processing agent of Example 3-1 was prepared by mixing 1 part with respect to a total of 100 parts with the third processing agent.

(Examples (3-2) to (3-21))
In the same manner as in Example 3-1, in addition to the 3-part type first treatment agent, the 3-part type second treatment agent, and the 3-part type third treatment agent shown in Table 11, if necessary, those shown in Table 12 Other processing agents (D) were mixed to prepare processing agents for each example.

Types and mass ratios of 3-component first processing agents Types and mass ratios of 3-component second processing agents Types and mass ratios of 3-component third processing agents Types and mass ratios of other processing agents (D) are shown in the columns of "three-part type first treatment agent", "three-part type second treatment agent", "three-part type third treatment agent", and "other treatment agents (D)" in Table 11, respectively. . The content of the other treatment agent (D) indicates the amount (parts) when the total amount of the 3-part type first treatment agent to the 3-part type third treatment agent is 100 parts.

(pH of treatment agent)
A 3-part type first treatment agent, a 3-part type second treatment agent, and a 3-part type third treatment agent shown in Table 11 were mixed, diluted with warm water of about 70°C, and diluted with 1% water as a treatment agent. A liquid was prepared. In addition, in the example of using the other treatment agent (D), after mixing the 3-part type 1st treatment agent to the 3-part type 3rd treatment agent with the other treatment agent (D), it is diluted with warm water of about 70 ° C. A 1% water dilution was used as a treatment agent. The pH at 25° C. of the prepared 1% water dilution of each example was measured. The measured values are shown in Table 11 in the "pH of 1% water dilution" column.

表１１に記載するその他処理剤（Ｄ）は、下記の表１２に記載される処理剤（３剤型IV－１）～（３剤型IV－６）を使用した。処理剤（３剤型IV－１）～（３剤型IV－６）は、その他成分（Ｄ）を表１２に示した割合で含むように調製した。

As other treatment agents (D) listed in Table 11, the treatment agents (three dosage forms IV-1) to (three dosage forms IV-6) described in Table 12 below were used. Treatment agents (three dosage forms IV-1) to (three dosage forms IV-6) were prepared so as to contain the other component (D) in the ratio shown in Table 12.

試験区分１６（３剤型処理剤の評価）
得られた各例の処理剤を用いて、実施例１と同様の方法にて湿潤時金属摩擦、粘着性、繊維強度、乳化安定性について評価した。なお、湿潤時金属摩擦、繊維強度、及び乳化安定性の評価に用いた希釈液の調製方法は、試験区分９の（ｐＨ測定）欄に記載の方法と同様にて、３剤型第１処理剤と３剤型第２処理剤と３剤型第３処理剤、必要によりその他処理剤（Ｄ）を混合した後、水で希釈することにより、処理剤の希釈液を調製した。結果を表１１の「湿潤時金属摩擦」欄、「粘着性」欄、「繊維強度」欄、「乳化安定性」欄にそれぞれ示す。

Test section 16 (evaluation of 3-dose treatment agent)
Using the obtained treatment agent of each example, wet metal friction, adhesiveness, fiber strength, and emulsion stability were evaluated in the same manner as in Example 1. In addition, the method for preparing the diluted solution used for evaluating the wet metal friction, fiber strength, and emulsion stability was the same as the method described in the (pH measurement) column of test section 9, and the 3-formulation first treatment A diluted solution of the treatment agent was prepared by mixing the agent, the 3-part type 2nd treatment agent, the 3-part type 3rd treatment agent, and if necessary, the other treatment agent (D), and then diluting the mixture with water. The results are shown in Table 11, "wet metal friction", "tackiness", "fiber strength", and "emulsion stability".

As is clear from the evaluation results of each example relative to the comparative examples in each table, the treatment agent of the present invention can improve the emulsion stability when diluted with water. In addition, it is possible to reduce the adhesion of the surface of the fiber to which the treatment agent is applied, and to suppress the decrease in fiber strength.

Claims (23)

Synthetic polyester containing 5% by mass or more of (poly)oxyalkylene derivative (A), 1% by mass or more of inorganic acid compound (B) below, and 5% by mass or more of organic phosphate compound (C) below The fiber treatment agent is characterized in that a 1% by mass water dilution of the polyester synthetic fiber treatment agent (not containing a solvent) has a pH of 5.5 or more and 8.5 or less at 25°C. Treatment agent for polyester synthetic fibers.
Inorganic acid compound (B): at least one selected from sulfuric acid, nitric acid, hydrochloric acid, and salts thereof.
Organic phosphate ester compound (C): at least one selected from organic phosphate esters having an alkyl group having 16 to 20 carbon atoms in the molecule, and salts thereof. When the total content of the (poly)oxyalkylene derivative (A), the inorganic acid compound (B), and the organic phosphoric ester compound (C) is 100 parts by mass, the (poly)oxyalkylene derivative ( A) and the inorganic acid compound (B) in a total amount of 20 parts by mass or more and 80 parts by mass or less, and the organic phosphoric ester compound (C) in a proportion of 20 parts by mass or more and 80 parts by mass or less. 3. The treatment agent for polyester synthetic fibers according to . a two-component first treatment agent for polyester synthetic fibers containing the (poly)oxyalkylene derivative (A);
and a two-component second treatment agent for polyester synthetic fibers containing the organic phosphate ester compound (C),
2. The inorganic acid compound (B) according to claim 1, wherein one or both of the two-part first treatment agent for polyester synthetic fibers and the second two-part treatment agent for polyester synthetic fibers contains the inorganic acid compound (B). A treatment agent for polyester synthetic fibers. a three-component first treatment agent for polyester synthetic fibers containing the (poly)oxyalkylene derivative (A);
a three-component second treatment agent for polyester synthetic fibers containing the organic phosphate ester compound (C);
2. The treating agent for polyester synthetic fibers according to claim 1, comprising a set comprising a three-component third treating agent for polyester synthetic fibers containing the inorganic acid compound (B). The treating agent for polyester synthetic fibers according to claim 1, wherein the polyester synthetic fibers are polyester short fibers. The polyester synthetic fiber treatment agent according to claim 1, wherein the polyester synthetic fiber is used for manufacturing spun yarn. A polyester synthetic fiber treatment agent-containing composition comprising the polyester synthetic fiber treatment agent according to any one of claims 1 to 6 and the following solvent (S).
Solvent (S): A solvent having a boiling point of 105° C. or less at atmospheric pressure. A two-component second treatment agent for polyester synthetic fibers containing the following organic phosphate compound (C), or a two-component second treatment agent for polyester synthetic fibers containing the following organic phosphoric acid ester compound (C) 2 for polyester synthetic fibers containing a (poly)oxyalkylene derivative (A), used in combination with a two-component second treating agent-containing composition for polyester synthetic fibers containing a treating agent and the following solvent (S) A dosage form first treatment agent,
One or both of the two-component first treatment agent for polyester synthetic fibers and the two-component second treatment agent for polyester synthetic fibers contains the following inorganic acid compound (B), and the polyester-based When a mixture of the two-part first treatment agent for synthetic fibers and the second two-part treatment agent for polyester synthetic fibers (not containing a solvent) is diluted with 1% by mass of water, the pH at 25°C is 5. .5 or more and 8.5 or less, and in the mixture (without solvent) of the two-part first treatment agent for polyester synthetic fibers and the second two-part treatment agent for polyester synthetic fibers, (Poly) oxyalkylene derivative (A) 5% by mass or more, the inorganic acid compound (B) 1% by mass or more, and the organic phosphoric ester compound (C) 5% by mass or more. A two-component first treatment agent for polyester synthetic fibers.
Inorganic acid compound (B): at least one selected from sulfuric acid, nitric acid, hydrochloric acid, and salts thereof.
Organic phosphate ester compound (C): at least one selected from organic phosphate esters having an alkyl group having 16 to 20 carbon atoms in the molecule, and salts thereof.
Solvent (S): A solvent having a boiling point of 105° C. or less at atmospheric pressure. A two-component first treating agent-containing composition for polyester synthetic fibers, characterized by comprising the two-component first treating agent for polyester synthetic fibers according to claim 8 and the following solvent (S). .
Solvent (S): A solvent having a boiling point of 105° C. or less at atmospheric pressure. A two-component first treatment agent for polyester synthetic fibers containing a (poly)oxyalkylene derivative (A), or a two-component first treatment agent for polyester synthetic fibers containing a (poly)oxyalkylene derivative (A) and a two-component first treatment-containing composition for polyester synthetic fibers containing the following solvent (S), and a two-agent for polyester synthetic fibers containing the following organic phosphate ester compound (C) A mold second treatment agent,
One or both of the two-component first treatment agent for polyester synthetic fibers and the two-component second treatment agent for polyester synthetic fibers contains the following inorganic acid compound (B), and the polyester-based When a mixture of the two-part first treatment agent for synthetic fibers and the second two-part treatment agent for polyester synthetic fibers (not containing a solvent) is diluted with 1% by mass of water, the pH at 25°C is 5. .5 or more and 8.5 or less, and in the mixture (without solvent) of the two-part first treatment agent for polyester synthetic fibers and the second two-part treatment agent for polyester synthetic fibers, (Poly) oxyalkylene derivative (A) 5% by mass or more, the inorganic acid compound (B) 1% by mass or more, and the organic phosphoric ester compound (C) 5% by mass or more. A two-component second treatment agent for polyester synthetic fibers.
Inorganic acid compound (B): at least one selected from sulfuric acid, nitric acid, hydrochloric acid, and salts thereof.
Organic phosphate ester compound (C): at least one selected from organic phosphate esters having an alkyl group having 16 to 20 carbon atoms in the molecule, and salts thereof.
Solvent (S): A solvent having a boiling point of 105° C. or less at atmospheric pressure. A composition containing a two-part second treatment agent for polyester synthetic fibers, characterized by comprising the two-part second treatment agent for polyester synthetic fibers according to claim 10 and the following solvent (S). .
Solvent (S): A solvent having a boiling point of 105° C. or less at atmospheric pressure. A 3-component second treatment agent for polyester synthetic fibers containing the following organic phosphate ester compound (C), or a 3-component second treatment agent for polyester synthetic fibers containing the following organic phosphate compound (C) a composition containing a 3-part second treatment agent for polyester synthetic fibers containing a treatment agent and the following solvent (S);
A three-part type third treatment agent for polyester synthetic fibers containing the following inorganic acid compound (B), or a three-part type third treatment agent for polyester synthetic fibers containing the following inorganic acid compound (B) and the following used in combination with a 3-part third treatment agent-containing composition for polyester synthetic fibers containing a solvent (S) of
A three-component first treatment agent for polyester synthetic fibers containing a (poly)oxyalkylene derivative (A),
A mixture (solvent-free) of the three-part first treatment agent for polyester synthetic fibers, the second three-part treatment agent for polyester synthetic fibers, and the third three-part treatment agent for polyester synthetic fibers is a 1 mass% water dilution, the pH at 25 ° C. is 5.5 or more and 8.5 or less, the three-part first treatment agent for polyester synthetic fibers, the three In a mixture (not containing a solvent) of the second treatment agent in the dosage form and the third treatment agent in the three-part type for polyester synthetic fibers, the (poly)oxyalkylene derivative (A) is added in an amount of 5% by mass or more, and the inorganic A three-component first treatment agent for polyester synthetic fibers, containing 1% by mass or more of the acid compound (B) and 5% by mass or more of the organic phosphoric acid ester compound (C).
Inorganic acid compound (B): at least one selected from sulfuric acid, nitric acid, hydrochloric acid, and salts thereof.
Organic phosphate ester compound (C): at least one selected from organic phosphate esters having an alkyl group having 16 to 20 carbon atoms in the molecule, and salts thereof.
Solvent (S): A solvent having a boiling point of 105° C. or less at atmospheric pressure. A composition containing a three-part first treatment agent for polyester synthetic fibers, characterized by comprising the three-part first treatment agent for polyester synthetic fibers according to claim 12 and the following solvent (S). .
Solvent (S): A solvent having a boiling point of 105° C. or less at atmospheric pressure. A 3-component first treatment agent for polyester synthetic fibers containing a (poly)oxyalkylene derivative (A), or a 3-component first treatment agent for polyester synthetic fibers containing a (poly)oxyalkylene derivative (A) and a three-component first treatment agent-containing composition for polyester synthetic fibers containing the following solvent (S);
A 3-part type 3rd treatment agent for polyester synthetic fibers containing an inorganic acid compound (B), or a 3-part type 3rd treatment agent for polyester synthetic fibers containing an inorganic acid compound (B) and the following solvent (S ) in combination with a 3-part third treatment agent-containing composition for polyester synthetic fibers containing
A three-component second treatment agent for polyester synthetic fibers containing an organic phosphate ester compound (C),
A mixture (solvent-free) of the three-part first treatment agent for polyester synthetic fibers, the second three-part treatment agent for polyester synthetic fibers, and the third three-part treatment agent for polyester synthetic fibers is a 1 mass% water dilution, the pH at 25 ° C. is 5.5 or more and 8.5 or less, the three-part first treatment agent for polyester synthetic fibers, the three In a mixture (not containing a solvent) of the second treatment agent in the dosage form and the third treatment agent in the three-part type for polyester synthetic fibers, the (poly)oxyalkylene derivative (A) is added in an amount of 5% by mass or more, and the inorganic A three-part type second treatment agent for polyester synthetic fibers, containing 1% by mass or more of the acid compound (B) and 5% by mass or more of the organic phosphoric acid ester compound (C).
Inorganic acid compound (B): at least one selected from sulfuric acid, nitric acid, hydrochloric acid, and salts thereof.
Organic phosphate ester compound (C): at least one selected from organic phosphate esters having an alkyl group having 16 to 20 carbon atoms in the molecule, and salts thereof.
Solvent (S): A solvent having a boiling point of 105° C. or less at atmospheric pressure. A composition containing a three-part second treatment agent for polyester synthetic fibers, characterized by comprising the three-part second treatment agent for polyester synthetic fibers according to claim 14 and the following solvent (S). .
Solvent (S): A solvent having a boiling point of 105° C. or less at atmospheric pressure. A 3-component first treatment agent for polyester synthetic fibers containing a (poly)oxyalkylene derivative (A), or a 3-component first treatment agent for polyester synthetic fibers containing a (poly)oxyalkylene derivative (A) a three-part first treatment agent-containing composition for polyester synthetic fibers containing an agent and the following solvent (S);
A 3-component second treatment agent for polyester synthetic fibers containing the following organic phosphate ester compound (C), or a 3-component second treatment agent for polyester synthetic fibers containing the following organic phosphate compound (C) Used in combination with a composition containing a 3-part second treatment agent for polyester synthetic fibers containing a treatment agent and the following solvent (S),
A three-component third treatment agent for polyester synthetic fibers containing an inorganic acid compound (B),
A mixture (solvent-free) of the three-part first treatment agent for polyester synthetic fibers, the second three-part treatment agent for polyester synthetic fibers, and the third three-part treatment agent for polyester synthetic fibers is a 1 mass% water dilution, the pH at 25 ° C. is 5.5 or more and 8.5 or less, the three-part first treatment agent for polyester synthetic fibers, the three In a mixture (not containing a solvent) of the second treatment agent in the dosage form and the third treatment agent in the three-part type for polyester synthetic fibers, the (poly)oxyalkylene derivative (A) is added in an amount of 5% by mass or more, and the inorganic A three-part type third treatment agent for polyester synthetic fibers, containing 1% by mass or more of the acid compound (B) and 5% by mass or more of the organic phosphoric acid ester compound (C).
Inorganic acid compound (B): at least one selected from sulfuric acid, nitric acid, hydrochloric acid, and salts thereof.
Organic phosphate ester compound (C): at least one selected from organic phosphate esters having an alkyl group having 16 to 20 carbon atoms in the molecule, and salts thereof.
Solvent (S): A solvent having a boiling point of 105° C. or less at atmospheric pressure. A composition containing a three-part third treatment agent for polyester synthetic fibers, characterized by comprising the three-part third treatment agent for polyester synthetic fibers according to claim 16 and the following solvent (S). .
Solvent (S): A solvent having a boiling point of 105° C. or less at atmospheric pressure. It contains the polyester-based synthetic fiber treatment agent according to any one of claims 1 to 6, and the concentration of the polyester-based synthetic fiber treatment agent is 0.1% by mass or more and 10% by mass or less. Diluted solution of polyester-based synthetic fiber treatment agent. Obtained by adding the treatment agent for polyester synthetic fibers according to any one of claims 1 to 6 to water in at least one step of spinning, drawing, and finishing of polyester synthetic fibers. A method for treating a polyester synthetic fiber, which comprises applying a diluted solution of the polyester synthetic fiber treatment agent to the polyester synthetic fiber. A synthetic polyester obtained by adding the composition containing the treatment agent for polyester synthetic fibers according to claim 7 to water in at least one step of spinning, drawing, and finishing the polyester synthetic fiber. What is claimed is: 1. A method for treating a polyester synthetic fiber, which comprises applying a diluted solution of a fiber treatment agent to the polyester synthetic fiber. In at least one step of the polyester synthetic fiber spinning process, the drawing process, and the finishing process, water is added with the two-component first treatment agent for polyester synthetic fibers according to claim 8 or the polyester according to claim 9. A composition containing a two-component first treatment agent for synthetic fibers, and a two-component second treatment agent for polyester synthetic fibers according to claim 10 or a two-component second treatment agent for polyester synthetic fibers according to claim 11. 2. A method for treating a polyester synthetic fiber, which comprises applying a diluted solution of a polyester synthetic fiber treatment agent obtained by adding a composition containing a treatment agent to the polyester synthetic fiber. In at least one step of the polyester synthetic fiber spinning step, the drawing step, and the finishing step, water is added with the three-component first treatment agent for polyester synthetic fibers according to claim 12 or the polyester according to claim 13. A composition containing a three-part type first treatment agent for synthetic fibers, and a three-part type second treatment agent for polyester synthetic fibers according to claim 14 or a three-part type second treatment agent for polyester synthetic fibers according to claim 15. The composition containing two treatment agents, and the three-part third treatment agent for polyester synthetic fibers according to claim 16 or the three-part third treatment agent-containing composition for polyester synthetic fibers according to claim 17, A method for treating a polyester synthetic fiber, which comprises applying a diluted solution of a polyester synthetic fiber treatment agent obtained by adding to the polyester synthetic fiber. A polyester synthetic fiber to which the treatment agent for polyester synthetic fiber according to any one of claims 1 to 6 is adhered.