TW202208318A - Synthetic fiber treatment agent and synthetic fiber - Google Patents

Abstract

The present invention addresses the problem of providing: a synthetic fiber treatment agent that can reduce the scattering of oil in a spinning step and can improve emulsion stability in poor quality water such as hard water; and synthetic fibers having said synthetic fiber treatment agent adhered thereto. The present invention is a synthetic fiber treatment agent comprising a smoothing agent, a nonionic surfactant and an ionic surfactant, and is characterized by: the smoothing agent comprising a specific ester A1; the smoothing agent containing a ratio of 40-100 mass% of the ester A1; and the nonionic surfactant containing an alkylene oxide adduct of a C4-24 aliphatic alcohol having a branched chain structure.

Description

Treatment agent for synthetic fibers and synthetic fibers

The present invention relates to a treatment agent for synthetic fibers which can reduce the scattering of oil agents in the spinning step and can improve emulsion stability in water with unsatisfactory water quality such as hard water, and a synthetic fiber to which the treatment agent for synthetic fibers adheres .

In general, in the spinning step of synthetic fibers, from the viewpoint of reducing friction and reducing fiber damage such as broken filaments, a treatment agent for synthetic fibers may be adhered to the surfaces of filamentous strands of synthetic fibers.

The treatment agent for synthetic fibers disclosed in Patent Document 1 is known. Patent Document 1 discloses a treatment agent for synthetic fibers containing a surfactant such as a smoothing agent such as stearate of 2-octyldodecanol and a stearic acid diester of trimethylolpropane EO24 molar adduct .

prior art literature Patent Literature Patent Document 1: Japanese Patent Laid-Open No. 2012-92481

The problem to be solved by the invention However, in these conventional treatment agents for synthetic fibers, the scattering of the oil agent in the spinning step and the emulsion stability in water with unsatisfactory water quality are still insufficient.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a treatment agent for synthetic fibers which can reduce the scattering of the oil agent in the spinning step and improve the emulsion stability in water with unsatisfactory water quality such as hard water. Further, the present invention provides a synthetic fiber to which the treatment agent for synthetic fibers is adhered.

means of solving problems The present inventors have studied in order to solve the above-mentioned problems, and as a result, found that it is particularly effective to include a specific ester compound as a smoothing agent, a specific nonionic surfactant, and an ionic surfactant in the treatment agent for synthetic fibers.

The processing agent for synthetic fibers for solving the above-mentioned problems contains a smoothing agent, a nonionic surfactant, and an ionic surfactant, wherein the smoothing agent contains the esters A1 shown in the following formula 1; The said ester A1 is contained in the ratio of 40-100 mass % in the agent; The said nonionic surfactant contains the alkylene oxide adduct of a C 4-24 aliphatic alcohol which has a branched structure.

1

(In Chemical 1, R ¹ : a saturated hydrocarbon group having 7 to 23 carbon atoms, or an unsaturated hydrocarbon group having 7 to 23 carbon atoms; X ¹ , Y ¹ , Z ¹ : a hydrogen atom, a methyl group, an ethyl group, a carbon number 3 to 3 21 linear saturated hydrocarbon group, C3-21 branched saturated hydrocarbon group, C3-21 linear unsaturated hydrocarbon group, or C3-21 branched unsaturated hydrocarbon group 。 Wherein, at least one of X ¹ and Y ¹ is a methyl group, an ethyl group, or the above-mentioned hydrocarbon group, and the sum of the carbon numbers of X ¹ , Y ¹ and Z ¹ is 5-21.)

Among the above-mentioned processing agents for synthetic fibers, it is preferable that the above-mentioned smoothing agent further contains esters A2 shown in Chemical 2 below.

2

(In Formula 2, R ² : a saturated hydrocarbon group having 7 to 23 carbon atoms, or an unsaturated hydrocarbon group having 7 to 23 carbon atoms; X ² : hydrogen atom; Y ² : hydrogen atom; Z ² : hydrogen atom, methyl group, ethyl group group, linear saturated hydrocarbon group with 3 to 17 carbon atoms, saturated hydrocarbon group with branched chain structure with 3 to 17 carbon atoms, linear unsaturated hydrocarbon group with 3 to 17 carbon atoms, or branched hydrocarbon group with 3 to 17 carbon atoms Unsaturated hydrocarbon group of chain structure.)

In the said processing agent for synthetic fibers, it is preferable to contain the said ester A1 in the ratio of 55-100 mass %, when the sum total of the content ratio of the said ester A1 and the said ester A2 is made into 100 mass %.

In the above-mentioned treatment agent for synthetic fibers, X ¹ in the above-mentioned Chemical 1 is preferably a methyl group, an ethyl group, a linear saturated hydrocarbon group having 3 to 21 carbon atoms, or a saturated hydrocarbon group having a branched chain structure having 3 to 21 carbon atoms. , a straight-chain unsaturated hydrocarbon group having 3 to 21 carbon atoms, or an unsaturated hydrocarbon group having a branched chain structure having 3 to 21 carbon atoms.

In the above-mentioned treatment agent for synthetic fibers, it is preferable that the above-mentioned nonionic surfactant contains epoxy resin having 2 to 4 carbon atoms added to 1 mole of aliphatic alcohols having 4 to 14 carbon atoms having a branched chain structure. A compound in a ratio of 1 to 100 moles in total.

In the above-mentioned processing agent for synthetic fibers, it is preferable that in the above-mentioned Chemical 1, the total number of carbon atoms of X ¹ , Y ¹ and Z ¹ is 6 to 12.

The synthetic fiber for solving the above-mentioned problems is characterized in that the above-mentioned processing agent for synthetic fibers is adhered.

Invention effect According to the present invention, the scattering of the oil agent in the spinning step can be reduced, and the emulsion stability can be improved in water with unsatisfactory water quality such as hard water.

(first embodiment)

First, the first embodiment of the present invention, that is, a treatment agent for synthetic fibers (hereinafter referred to as a treatment agent) will be described. The processing agent of this embodiment contains a smoothing agent, a nonionic surfactant, and an ionic surfactant.

The smoothing agent used in the present embodiment contains the esters A1 shown in Chemical 3 below.

3

(In Compound 3, R ¹ : a saturated hydrocarbon group having 7 to 23 carbon atoms, or an unsaturated hydrocarbon group having 7 to 23 carbon atoms; X ¹ , Y ¹ , Z ¹ : a hydrogen atom, a methyl group, an ethyl group, a carbon number 3 to 3 21 linear saturated hydrocarbon group, C3-21 branched saturated hydrocarbon group, C3-21 linear unsaturated hydrocarbon group, or C3-21 branched unsaturated hydrocarbon group ; wherein, at least one of X ¹ and Y ¹ is a methyl group, an ethyl group, or the above-mentioned hydrocarbon group, and the sum of the carbon numbers of X ¹ , Y ¹ and Z ¹ is 5 to 21.)

These esters A1 may be used alone or in combination of two or more.

Among these, X ¹ of Compound 3 is preferably a methyl group, an ethyl group, a straight-chain saturated hydrocarbon group having 3 to 21 carbon atoms, a saturated hydrocarbon group having a branched chain structure having 3 to 21 carbon atoms, or a saturated hydrocarbon group having 3 to 21 carbon atoms. The straight-chain unsaturated hydrocarbon group or the unsaturated hydrocarbon group with a branched chain structure with 3 to 21 carbon atoms. If it is this compound, especially the scattering property can be reduced. In addition, in Compound 3, it is preferable that the sum of the carbon numbers of X ¹ , Y ¹ and Z ¹ is 6 to 12. If it is this compound, it can improve the emulsion stability especially in water of unsatisfactory water quality, such as hard water.

The hydrocarbon group constituting R ¹ may be a linear saturated hydrocarbon group or a saturated hydrocarbon group having a branched structure. Moreover, a linear unsaturated hydrocarbon group may be sufficient, and the unsaturated hydrocarbon group which has a branched structure may be sufficient.

Specific examples of the straight-chain saturated hydrocarbon group constituting R ¹ include, for example, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, and pentadecyl. alkyl, hexadecyl, heptadecyl, octadecyl, eicosyl, behenyl, behenyl, and the like.

Specific examples of the saturated hydrocarbon group having a branched chain structure constituting R ¹ include, for example, isoheptyl, isooctyl, isononyl, isodecyl, isundecyl, isododecyl, and isotridecyl. base, isotetradecyl, isopentadecyl, isohexadecyl, isoheptadecyl, isooctadecyl, isoeicosyl, isodocosyl, isotricosyl Base et al.

The unsaturated hydrocarbon group constituting R ¹ may be an alkenyl group having an unsaturated carbon bond having one double bond, or may be a dienyl group, a trienyl group, or the like having two or more double bonds. Moreover, it may be an alkynyl group having an unsaturated carbon bond having one triple bond, a dialkynyl group having two or more triple bonds, and the like. Specific examples of the linear unsaturated hydrocarbon group having one double bond in the hydrocarbon group include, for example, heptenyl, octenyl, nonenyl, decenyl, undecenyl, dodecenyl, and tridecene. tetradecenyl, tetradecenyl, pentadecenyl, hexadecenyl, heptadecenyl, octadecenyl, eicosenyl, docosenyl, eicosenyl and the like.

Specific examples of the unsaturated hydrocarbon group having one double bond and having a branched structure in the hydrocarbon group constituting R ¹ include, for example, isoheptenyl, isooctenyl, isononenyl, isodecenyl, and isoundecyl. Alkenyl, isododecenyl, isotridecenyl, isotetradecenyl, isopentadecenyl, isohexadecenyl, isoheptadecenyl, isooctadecenyl, isoeicosenyl , Isodocosyl, Isosatrienyl, etc.

Specific examples of the straight-chain saturated hydrocarbon group having 3 to 21 carbon atoms constituting X ¹ , Y ¹ , or Z ¹ include, for example, propyl group, butyl group, pentyl group, hexyl group, heptyl group, octyl group, nonyl group, and decyl group. base, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, eicosyl, twenty-one Alkyl etc.

Specific examples of the saturated hydrocarbon group having a branched chain structure and having 3 to 21 carbon atoms constituting X ¹ , Y ¹ , or Z ¹ include, for example, isopropyl, isobutyl, isoamyl, isohexyl, isoheptyl, isooctyl, isononyl, isodecyl, isundecyl, isododecyl, isotridecyl, isotetradecyl, isopentadecyl, isohexadecyl, isodecyl Heptaalkyl, isooctadecyl, isoeicosyl, isohexicosyl, etc.

The unsaturated hydrocarbon group constituting X ¹ , Y ¹ , or Z ¹ may be an alkenyl group having one double bond and an unsaturated carbon bond, or may be a dienyl group or a trienyl group having two or more double bonds. Moreover, it may be an alkynyl group having an unsaturated carbon bond having one triple bond, a dialkynyl group having two or more triple bonds, and the like. Specific examples of the linear unsaturated hydrocarbon group having one double bond in the hydrocarbon group constituting X ¹ , Y ¹ , or Z ¹ include propenyl, butenyl, pentenyl, hexenyl, and heptenyl. , octenyl, nonenyl, decenyl, undecenyl, dodecenyl, tridecenyl, tetradecenyl, pentadecenyl, hexadecenyl, heptadecenyl, octadecenyl Alkenyl, eicosenyl, eicosenyl, etc.

Specific examples of the unsaturated hydrocarbon group having one double bond and having a branched structure in the hydrocarbon group constituting X ¹ , Y ¹ , or Z ¹ include, for example, isopropenyl, isobutenyl, isopentenyl, isohexenyl, Isoheptenyl, isooctenyl, isononenyl, isodecenyl, isoundecenyl, isododecenyl, isotridecenyl, isotetradecenyl, isopentadecenyl, Isohexadecenyl, isoheptadecenyl, isooctadecenyl, isoeicosenyl, isoeicosenyl and the like.

Specific examples of the esters A1 include, for example, 2-propylheptyloleate, 2-methylnonyloleate, 2-ethylheptyldecanoate, and 2-methylnonyltetracosane acid ester, 2-ethyldecyl stearate, 2-propyl heptyl stearate, 2-ethyl tridecyl oleate, 3,5,5-trimethylhexyl oleate , 3,7-dimethyloctyloleate, 3-methylundecyloleate, 2-octyldodecylpalmitate, 2-ethylhexylstearate, 2- Octyldodecyl isostearate, 3-methylheptadecyl oleate, etc.

It is preferable that the smoothing agent used in this embodiment contains the ester A2 shown in the following formula 4.

4

(In Formula 4, R ² : a saturated hydrocarbon group having 7 to 23 carbon atoms, or an unsaturated hydrocarbon group having 7 to 23 carbon atoms; X ² : hydrogen atom; Y ² : hydrogen atom; Z ² : hydrogen atom, methyl group, ethyl group group, linear saturated hydrocarbon group with 3 to 17 carbon atoms, saturated hydrocarbon group with branched chain structure with 3 to 17 carbon atoms, linear unsaturated hydrocarbon group with 3 to 17 carbon atoms, or branched hydrocarbon group with 3 to 17 carbon atoms Unsaturated hydrocarbon group of chain structure.)

These esters A2 may be used individually by 1 type, and may be used in combination of 2 or more types.

The hydrocarbon group constituting R ² may be a linear saturated hydrocarbon group or a saturated hydrocarbon group having a branched structure. Moreover, a linear unsaturated hydrocarbon group may be sufficient, and the unsaturated hydrocarbon group which has a branched structure may be sufficient.

Specific examples of the saturated hydrocarbon group or unsaturated hydrocarbon group constituting R ² include the saturated hydrocarbon group or unsaturated hydrocarbon group constituting R ¹ listed in Formula 3.

Specific examples of the straight-chain saturated hydrocarbon group having 3 to 17 carbon atoms constituting Z ² include, for example, propyl group, butyl group, pentyl group, hexyl group, heptyl group, octyl group, nonyl group, decyl group, undecyl group, Dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, etc.

Specific examples of the branched saturated hydrocarbon group having 3 to 17 carbon atoms constituting Z ² include isopropyl, isobutyl, isopentyl, isohexyl, isoheptyl, isooctyl, and isononyl. , isodecyl, isoundecyl, isododecyl, isotridecyl, isotetradecyl, isopentadecyl, isohexadecyl, isoheptadecyl, etc.

The unsaturated hydrocarbon group constituting Z ² may be an alkenyl group having an unsaturated carbon bond having one double bond, or may be a dienyl group, a trienyl group, or the like having two or more double bonds. Moreover, it may be an alkynyl group having an unsaturated carbon bond having one triple bond, a dialkynyl group having two or more triple bonds, and the like. Specific examples of the linear unsaturated hydrocarbon group having one double bond in the hydrocarbon group constituting Z ² include propenyl, butenyl, pentenyl, hexenyl, heptenyl, octenyl, and nonene. base, decenyl, undecenyl, dodecenyl, tridecenyl, tetradecenyl, pentadecenyl, hexadecenyl, heptadecenyl and the like.

Specific examples of the unsaturated hydrocarbon group having one double bond and having a branched structure in the hydrocarbon group constituting Z ² include, for example, isopropenyl, isobutenyl, isopentenyl, isohexenyl, isoheptenyl, isooctyl Alkenyl, isononenyl, isodecenyl, isundecenyl, isododecenyl, isotridecenyl, isotetradecenyl, isopentadecenyl, isohexadecenyl, iso Heptadecenyl, etc.

Specific examples of the esters A2 include isotridecyl oleate, lauryl oleate, oleyl laurate, and the like.

In the treatment agent, when the total content of the esters A1 and A2 is 100% by mass, the content of the esters A1 can be appropriately set, but the treatment agent preferably contains the esters in a ratio of 55 to 100% by mass A1. By limiting to this range, the emulsion stability can be improved especially in water of unsatisfactory water quality, such as hard water.

The smoothing agent used in this embodiment can also use a smoothing agent other than the above. As the smoothing agent other than the above, known ones can be suitably used. Specific examples of the smoothing agent include (1) 2-ethyl tridecyl propionate, 2-dodecyl hexadecyl oleate, etc., the mixture of aliphatic monohydric alcohol and aliphatic monocarboxylic acid. The formed ester compound, the ester compound formed by the (poly)oxyalkylene adduct of an alkylene oxide having 2 to 4 carbon atoms added to an aliphatic monohydric alcohol and an aliphatic monocarboxylic acid; (2) 1,6 -Hexanediol Dicaprate, Trimethylolpropane Monooleate Monolaurate, Sorbitan Trioleate, Sorbitan Monooleate, Sorbitan Monostearate , glycerol monolaurate, etc., ester compounds formed by aliphatic polyhydric alcohol and aliphatic monocarboxylic acid; Alcohol dipropionate, diisocetyl mercaptan dipropionate, bispolyoxyethylene lauryl ether adipate, bispolyoxyethylene lauryl ether mercaptan dipropionate, etc., aliphatic monohydric alcohol and aliphatic polyhydric alcohol (4) Benzyl Base oleate, benzyl laurate, polyoxypropylene benzyl stearate, etc., ester compound formed by aromatic monohydric alcohol and aliphatic monocarboxylic acid, aromatic monohydric alcohol added with carbon number 2 (5) Bisphenol A dilaurate, polyoxyethylene bisphenol A dilaurate Etc., ester compounds formed by aromatic polyols and aliphatic monocarboxylic acids, (poly)oxyalkylene adducts of aromatic polyols with alkylene oxides having 2 to 4 carbon atoms added, and aliphatic monocarboxylic acids Ester compounds formed by acids; (6) bis-2-ethylhexyl phthalate, diisostearyl isophthalate, trioctyl trimellitate, etc., aliphatic monohydric alcohols and aromatic (7) Ester compounds formed by aliphatic polybasic acids, ester compounds formed by (poly)oxyalkylene adducts of aliphatic monohydric alcohols added with alkylene oxides having 2 to 4 carbon atoms, and aromatic polybasic acids; (7) Natural oils and fats such as coconut oil, rapeseed oil, sunflower oil, soybean oil, castor oil, sesame oil, fish oil, and tallow, etc.; (8) Mineral oil, etc.; known smoothing agents used in general treatment agents. These smoothing agents may be used alone or in combination of two or more.

The smoothing agent contains the esters A1 in a ratio of 40 to 100 mass %. By limiting to this range, the effect of this invention can be improved.

The content of the smoothing agent in the treatment agent can be appropriately set, but is preferably 20 to 80% by mass, more preferably 30 to 70% by mass. By limiting to this range, the smoothness of a fiber can be improved.

The nonionic surfactant used in the present embodiment contains an alkylene oxide adduct of an aliphatic alcohol having 4 to 24 carbon atoms and having a branched chain structure. The aliphatic alcohols may be saturated aliphatic alcohols or unsaturated aliphatic alcohols. These nonionic surfactants may be used alone or in combination of two or more.

Specific examples of the aliphatic alcohols having a branched chain structure having 4 to 24 carbon atoms include isobutanol, isohexanol, 2-ethylhexanol, isooctanol, isononanol, isodecanol, and isodecanol. Diol, Isotridecanol, Isotetradecanol, Isohexadecanol, Isoheptadecanol, Isostearyl alcohol, Isostearyl alcohol, Isononadecyl alcohol, Isoeicosanol, Isohexadecanol, Isostearyl alcohol Branched-chain alkanols such as behenicol, 2-octyldodecanol, isodocosanol, and isosteicanol; branched-chain alkanols such as isohexadecenol and isooctadecenol, etc.

As a specific example of the alkylene oxide used for the raw material of a nonionic surfactant, ethylene oxide, propylene oxide, etc. are mentioned, for example. The number of added moles of alkylene oxide can be appropriately set, and is preferably 0.1 to 150 moles, more preferably 1 to 100 moles, and most preferably 2 to 50 moles. Here, the number of added moles of alkylene oxide means the number of moles of alkylene oxide relative to 1 mole of alcohols in the charging raw material. The arrangement of the polymerization can be either random adducts or block adducts.

Specific examples of the alkylene oxide adducts of aliphatic alcohols having 4 to 24 carbon atoms having a branched chain structure include, for example, random addition of isohexanol with 10 moles of ethylene oxide and 8 moles of propylene oxide. compound, 15 moles of propylene oxide of 2-ethylhexanol - 13 moles of ethylene oxide block adduct, 8 moles of ethylene oxide of 2-octyldodecanol, 6 moles of propylene oxide Mor's random bonuses, etc.

Among the above-mentioned nonionic surfactants, a compound having 2 carbon atoms added in a total ratio of 1 to 100 moles relative to 1 mole of aliphatic alcohols having 4 to 14 carbon atoms having a branched chain structure is preferred. Compounds of alkylene oxides of ~4. By using this compound, especially the scattering of an oil agent can be reduced.

The content of the alkylene oxide adduct of aliphatic alcohols having a branched chain structure of 4 to 24 carbon atoms in the treatment agent can be appropriately set, and is preferably 1 to 30% by mass, more preferably 3 to 25% by mass, and most preferably 1 to 30% by mass. Preferably it is 5-20 mass %. By limiting to this range, the effect of this invention can be improved further.

The nonionic surfactant used in the present embodiment can also be used in combination with nonionic surfactants other than those described above. As the nonionic surfactant other than the above, known ones can be suitably used. Specific examples of nonionic surfactants include (1) organic acids, organic alcohols, organic amines and/or organic amides to which alkylene oxides having 2 to 4 carbon atoms are added, such as polyoxyethylene dilaurel acid ester, polyoxyethylene laurate, polyoxyethylene oleate, polyoxyethylene oleate diester, polyoxyethylene octyl ether, polyoxyethylene lauryl ether, polyoxyethylene lauryl ether methyl ether, polyoxyethylene polyoxyethylene Propylene lauryl ether, polyoxypropylene lauryl ether methyl ether, polyoxyethylene oleyl ether, polyoxybutylene oleyl ether, polyoxyethylene polyoxypropylene nonyl ether, polyoxypropylene nonyl ether, polyoxyethylene polyoxypropylene octyl ether, polyoxyethylene Oxyethylene lauryl ether, polyoxyethylene tridecyl ether, ethylene oxide propylene oxide random adduct of tetradecyl stearyl alcohol, polyoxyethylene lauryl amine ether, polyoxyethylene lauryl amide Amine ether, polyoxyethylene tristyrenated phenyl ether, ethylene oxide propylene oxide adduct of glycerol and other ether-type nonionic surfactants; (2) polyoxyalkylene sorbitan trioleate , Diester formed by ethylene oxide adduct of trimethylolpropane and stearic acid, polyoxyalkylene coconut oil, polyoxyalkylene castor oil, polyoxyalkylene hardened castor oil, polyoxyalkylene Polyoxyalkylene polyol fatty acid ester type nonionic interface such as oxyalkylene hardened castor oil tricaprylate, polyoxyalkylene hardened castor oil maleate, stearate, or oleate Active agent; (3) Alkylamide type nonionic surfactants such as diethanolamide stearate, diethanolamine monolauramide, (4) polyoxyethylene diethanolamine monooleylamide, polyoxyethylene lauryl Polyoxyalkylene fatty acid amide type nonionic surfactants such as amine, polyoxyethylene tallow amine, etc.

Among all nonionic surfactants, the content ratio of alkylene oxide adducts of aliphatic alcohols having a branched chain structure with 4 to 24 carbon atoms can be appropriately set, preferably 10 to 100 mass %, more preferably 15 to 80% by mass, preferably 20 to 60% by mass. By limiting to this range, the effect of this invention can be improved.

The content of all nonionic surfactants in the treatment agent can be appropriately set, and is preferably 5 to 70% by mass, more preferably 15 to 60% by mass. By limiting to this range, the effect of this invention and the stability in the case of being an emulsion can be improved.

As the ionic surfactant used in the present embodiment, a known one can be suitably used. Examples of the ionic surfactant include an anionic surfactant, a cationic surfactant, and an amphoteric surfactant. These components may be used individually by 1 type, and may be used in combination of 2 or more types.

As the anionic surfactant used in the present embodiment, a known one can be suitably used. Specific examples of anionic surfactants include (1) aliphatic alcohols such as lauryl phosphate, cetyl phosphate, octyl phosphate, oleyl phosphate, and stearyl phosphate. (2) aliphatic alcohols such as polyoxyethylene lauryl ether phosphate, polyoxyethylene oleyl ether phosphate, and polyoxyethylene stearyl ether phosphate are added with compounds selected from ethylene oxide and Phosphate ester salt of at least one alkylene oxide of propylene oxide; (3) lauryl sulfonate, myristyl sulfonate, cetyl sulfonate, oleyl sulfonate, stearyl sulfonate aliphatic sulfonate or aromatic sulfonate such as salt, tetradecyl sulfonate, dodecylbenzene sulfonate, second alkyl sulfonic acid (C13-15) salt; (4) lauryl sulfate (5) Polyoxyethylene lauryl ether sulfate, polyoxyalkylene (polyoxyethylene, polyoxypropylene) ) Aliphatic alcohols such as lauryl ether sulfate and polyoxyethylene oleyl ether sulfate added with at least one alkylene oxide selected from ethylene oxide and propylene oxide; (6) Castor Sesame Oil Fatty Acid Sulfate, Sesame Oil Fatty Acid Sulfate, Rosin Oil Fatty Acid Sulfate, Soybean Oil Fatty Acid Sulfate, Rapeseed Oil Fatty Acid Sulfate, Palm Oil Fatty Acid Sulfate, Lard Fatty Acid Sulfate, Butter (7) Sulfuric acid ester salts of castor oil, sulfate ester salts of sesame oil, sulfate ester salts of rosin oil, sulfate ester salts of soybean oil, sulfuric acid ester salts of rapeseed oil, etc. (8) Laurate, oleate, stearic acid Salts and other fatty acid salts; (9) sulfosuccinic acid ester salts of aliphatic alcohols such as dioctyl sulfosuccinate, etc. Examples of the counter ions of the anionic surfactant include alkali metal salts such as potassium salts and sodium salts, ammonium salts, and alkanolamine salts such as triethanolamine.

As the cationic surfactant used in the present embodiment, a known one can be suitably used. Specific examples of the cationic surfactant include lauryltrimethylammonium chloride, cetyltrimethylammonium chloride, stearyltrimethylammonium chloride, behenyltrimethylammonium chloride, and didecyldimethylammonium chloride. Wait.

As the amphoteric surfactant used in the present embodiment, a known one can be suitably used. As a specific example of an amphoteric surfactant, a betaine type amphoteric surfactant etc. are mentioned, for example.

The content of the ionic surfactant in the treatment agent can be appropriately set, and is preferably 1 to 20% by mass, more preferably 3 to 16% by mass, and most preferably 6 to 13% by mass. By limiting to this range, the effect of this invention, the stability when it is an emulsion, or antistatic property can be improved.

(Second Embodiment)

Next, a second embodiment of the present invention, that is, a synthetic fiber will be described. The synthetic fiber of this embodiment has the processing agent of 1st Embodiment adhered. The form of the processing agent at the time of adhering the processing agent to the synthetic fiber may be a diluted solution diluted with a dilution solvent, or may be an organic solvent solution or an aqueous liquid. The synthetic fiber of the present embodiment is produced through a process in which a treatment agent is attached to the synthetic fiber in the form of a diluted solution such as an aqueous solution, for example, in a spinning, drawing process, or the like. The diluent adhering to the synthetic fiber can also evaporate the water through the drying step.

Specific examples of the synthetic fibers produced are not particularly limited, for example (1) polyester fibers such as polyethylene terephthalate, polytrimethylene terephthalate, and polylactate; (2) nylon 6 , Polyamide fibers such as nylon 66; (3) Polyacrylic fibers such as polyacrylic acid and modified acrylic acid; (4) Polyolefin fibers such as polyethylene and polypropylene.

The adhesion amount of the treatment agent on the synthetic fibers is not particularly limited, but the treatment agent is preferably adhered at a ratio of 0.1 to 3 mass % (excluding solvents such as water) with respect to the synthetic fibers. According to this configuration, the effects of the present invention can be further enhanced. In addition, the method of attaching a treatment agent is not specifically limited, For example, well-known methods, such as a drum oiling method, a guide oiling method using a metering pump, a dipping oiling method, and a spraying oiling method, can be adopted.

The following effects can be obtained by the treatment agent and the synthetic fiber of the above-described embodiment.

(1) The treatment agent of the above-described embodiment includes a smoothing agent, a nonionic surfactant, and an ionic surfactant, the smoothing agent contains the above-mentioned esters A1, and the smoothing agent contains the ester in a ratio of 40 to 100 mass % Class A1, the nonionic surfactant contains an alkylene oxide adduct of an aliphatic alcohol having a branched chain structure of 4 to 24 carbon atoms. Therefore, scattering of the finish in the spinning step can be reduced. Therefore, various functions of the treating agent can be effectively exhibited in the obtained synthetic fibers. In addition, it is possible to improve the emulsion stability in water with unsatisfactory water quality such as hard water. Therefore, the production stability of the yarn can be improved without being limited by the water quality.

However, the above-mentioned embodiment can also be changed as follows.

・The treatment agent of the present embodiment can also be stored in the form of an aqueous liquid containing water. The content ratio of the treatment agent and water in the aqueous liquid is not particularly limited. When the content ratio of the treatment agent in the aqueous liquid is 100 parts by mass, the content ratio of the water in the aqueous liquid is preferably 5 to 30 parts by mass, more preferably 5 to 20 parts by mass. By limiting to this compounding ratio, the handleability of the aqueous liquid can be improved, and the stability over time can be improved. The type of water used in the preparation of the aqueous liquid is not particularly limited, and may be distilled water containing almost no impurities, or hard water or soft water containing Ca ions, Mg ions, and the like.

・As long as the effects of the present invention are not impaired, the treatment agent of the present embodiment may further contain a stabilizer, an antistatic agent, an adhesive, an antioxidant, an ultraviolet absorber, an antifoaming agent for maintaining the quality of the treatment agent It is usually used as a component of a treatment agent, such as an agent (polysiloxane-based compound).

Specific examples of antioxidants include (1) 1,3,5-sam(3',5'-di-t-butyl-4-hydroxybenzyl) isocyanuric acid, 1,3, 5-Sham (4-t-butyl-3-hydroxy-2,6-dimethylbenzyl) isocyanuric acid, 1,3,5-trimethyl-2,4,6-sam ( 3,5-Di-t-butyl-4-hydroxybenzyl)benzene, 2,2'-methylidene-bis(4-methyl-6-t-butanol), 1,1,3- ginseng (2-methyl-4-hydroxy-5-t-butylphenyl)butane, tetra[methyl-3-(3',5'-di-t-butyl-4'-hydroxyphenyl) ) propionate] methane, triethylene glycol-bis[3-(3-t-butyl-5-methyl-4-hydroxyphenyl) propionate] and other phenolic antioxidants; (2) octyl Diphenyl phosphite, samnonyl phenyl phosphite, tetra-tridecyl-4,4'-butylene-bis-(2-t-butyl-5-cresol) diphosphite Isophosphite-based antioxidants; (3) 4,4'-thiobis-(6-t-butyl-3-cresol), dilauryl-3,3'-thiol dipropionate, etc. Sulfide-based antioxidants, etc. These antioxidants may be used alone or in combination of two or more.

Example

Hereinafter, in order to demonstrate the structure and effect of this invention more concretely, although an Example etc. are given, this invention is not limited to these Examples. In addition, in the following description of an Example and a comparative example, a part shows a mass part, and % shows a mass %.

Test Category 1 (Preparation of Treatment Agents for Synthetic Fibers)

The processing agent used in each Example and each comparative example was obtained by the following preparation method using each component shown in Tables 1-4.

Table 1 shows the esters A1 (A1-1 to 14) shown in Formula 3 above. The type of ester A1 is shown in the column of "Ester A1" in Table 1. The types of R ¹ , X ¹ , Y ¹ , and Z ¹ in Formula 3 are shown in the “R ¹ ” column, the “X ¹ ” column, the “Y ¹ ” column, and the “Z ¹ ” column in Table 1, respectively. In addition, the total of the carbon numbers of X ¹ , Y ¹ and Z ¹ is shown in the column “Total of the carbon numbers of X ¹ , Y ¹ and Z ¹ ” in Table 1.

For reference, the synthesis example of 2-propylheptyl oleate (A1-1) is as follows.

・Synthesis of 2-propylheptyl oleate (A1-1) 282 g (1 mol) of oleic acid and 158 g (1 mol) of 2-propylheptanol were put into a flask, melted at 75°C under nitrogen, 0.6 g of p-toluenesulfonic acid as a catalyst was added, and then added to the flask. The reaction was carried out at 120°C under a reduced pressure of 2 mmHg for 4 hours. Then return to normal pressure at 105°C under nitrogen, and add adsorbent to dispose of the catalyst. Filtration was then carried out at 90°C to obtain a mixture containing esters A1-1.

In order to separate a trace amount of impurities (by-products, unreacted alcohols, unreacted fatty acids, etc.) from the esters A1-1 obtained by the above method, separation treatment was performed by column chromatography using silica gel.

The ester A1-1 separated by the column was analyzed by ¹ H-NMR (MERCURY plus NMR Spectrometor System, 300 MHz, CDCl ₃ manufactured by VALIAN). It was confirmed by NMR that it has a doublet at 3.9 to 4.1 ppm, that is, a peak indicating that X ¹ in Compound 3 is a hydrocarbon group (wherein, when X ¹ is a hydrogen atom, it is a triplet). Furthermore, by GC-MS measurement, it was confirmed that MS has a molecular ion peak (m/z=422).

Table 1 type Esters A1 R ¹ X ¹ Y ¹ Z ¹ Sum of carbon numbers of X ¹ , Y ¹ , Z ¹ A1-1 2-Propylheptyloleate 8-heptadecenyl propyl hydrogen Butyl 7 A1-2 2-Methylnonyloleate 8-heptadecenyl methyl hydrogen Hexyl 7 A1-3 2-Ethylheptyldecanoate Nonyl Ethyl hydrogen Butyl 6 A1-4 2-Methylnonyl tetracosanoate tridecyl methyl hydrogen Hexyl 7 A1-5 2-Ethyldecyl stearate Heptadecyl Ethyl hydrogen Heptyl 9 A1-6 2-propylheptyl stearate Heptadecyl propyl hydrogen Butyl 7 A1-7 2-Ethyltridecyloleate 8-heptadecenyl Ethyl hydrogen Decyl 12 A1-8 3,5,5-Trimethylhexyloleate 8-heptadecenyl hydrogen methyl 2,2-Dimethylpropyl 6 A1-9 3,7-Dimethyloctyloleate 8-heptadecenyl hydrogen methyl 4-Methylpentyl 7 A1-10 3-Methylundecyloleate 8-heptadecenyl hydrogen methyl Octy 9 A1-11 2-Octyldodecyl palmitate pentadecyl Octy hydrogen Nonyl 17 A1-12 2-Ethylhexyl stearate Heptadecyl Ethyl hydrogen propyl 5 A1-13 2-Octyldodecyl isostearate 15-Methylhexadecyl Octy hydrogen Nonyl 17 A1-14 3-Methylheptadecyloleate 8-heptadecenyl hydrogen methyl tetradecyl 15

Table 2 shows the esters A2 (A2-1 to 3) shown in Formula 4 above. The type of ester A2 is shown in the column of "Ester A2" in Table 2. The types of R ² , X ² , Y ² , and Z ² in Formula 4 are shown in the “R ² ” column, the “X ² ” column, the “Y ² ” column, and the “Z ² ” column in Table 2, respectively.

Table 2 type Esters A2 R ² X ² Y ² Z ² A2-1 isotridecyl oleate 8-heptadecenyl hydrogen hydrogen 8-Methylnonyl A2-2 Lauryl Oleate 8-heptadecenyl hydrogen hydrogen Nonyl A2-3 oleyl laurate Undecyl hydrogen hydrogen 6-Pentadecenyl

・Preparation of treatment agent (Example 1) 50% of 2-propylheptyl oleate (A1-1) as a smoothing agent; a random adduct of 10 mol of ethylene oxide and 8 mol of propylene oxide of isohexanol as a nonionic surfactant ( B-1) 10%, 20 moles of ethylene oxide adduct of hardened castor oil (b-1) 15%, 7 moles of ethylene oxide adduct of oleic acid (b-2) 15%; Polyoxyethylene of ionic surfactant (2 moles, which means the number of moles of ethylene oxide added, the same below) phosphate ester of lauryl ether and potassium salt 4.9% (C-1), the second Sodium alkyl sulfonate (carbon number 13-15) (C-2) 4%, potassium oleate (C-3) 1%; 1,1,3-parameter (2-methyl-4-hydroxyl) of antioxidants -5-t-Butylphenyl)butane (D-1) 0.1% was uniformly mixed to obtain the mixture of the treating agent of Example 1.

・Preparation of treatment agents (Examples 2 to 33 and Comparative Examples 1 to 5) In the same manner as the preparation of the treatment agent of Example 1, the treatment agents of Examples 2 to 33 and Comparative Examples 1 to 5 were prepared using the components shown in Tables 3 and 4. However, in Tables 3 and 4, the type of each component in the treatment agent is shown, and the compounding ratio (%) of each component is shown when the treatment agent is 100%.

The types and contents of the smoothing agents, the types and contents of nonionic surfactants, the types and contents of ionic surfactants, and the types and contents of other components are shown in Tables 3 and 4, respectively, in the "Smoothing Agents" column in Tables 3 and 4. , "Nonionic Surfactant" column, "Ionic Surfactant" column, "Other Components" column. In addition, the mass ratio of the content of the esters A1 in the smoothing agent is shown in the column "mass ratio: esters A1/smoothing agent" in Table 1, when the total of the content ratios of the esters A1 and the esters A2 is 100%. The mass ratio of the content of A1 is shown in the column "mass ratio: ester A1/(ester A1+ester A2)" in Tables 3 and 4.

table 3

Table 4

Each code in Tables 3 and 4 indicates: a-1: 2-Dodecylhexadecyl oleate a-2: Rapeseed oil a-3: Mineral oil (180 Rays sec, 30°C) a- 4: 2-Ethyltridecyl propionate a-5: Diester of 2-decyltetradecanol with thiol dipropionic acid a-6: Polyoxyethylene (3 molar) lauryl ether with thiol Di-ester B-1 of dipropionic acid: 10 moles of ethylene oxide in isohexanol, 8 moles of propylene oxide, random adduct B-2: 15 moles of propylene oxide in 2-ethylhexanol- Block adduct of 13 moles of ethylene oxide B-3: 8 moles of ethylene oxide of 2-octyldodecanol and random addition of 6 moles of propylene oxide b-1: Hardened castor 20-molar ethylene oxide adduct of sesame oil b-2: 7-molar ethylene oxide adduct of oleic acid b-3: 7-molar ethylene oxide adduct of lauryl alcohol b-4: Diester of 24 mol adduct of ethylene oxide of trimethylolpropane with stearic acid b-5: 25 mol adduct of ethylene oxide of hardened castor oil b-6: tallow 15 moles of ethylene oxide adducts of base amines b-7: 10 moles of ethylene oxides of tetradecyl stearyl alcohol and 4 moles of propylene oxides random adducts C-1: polyoxygen The salt formed by the phosphate ester of ethylene (2 mol) lauryl ether and potassium C-2: Sodium second alkyl sulfonate (carbon number 13-15) C-3: Potassium oleate D-1: 1,1, 3-Sham (2-methyl-4-hydroxy-5-t-butylphenyl)butane D-2: triethylene glycol-bis[3-(3-t-butyl-5-methyl-4 -Hydroxyphenyl) propionate] D-3: Polydimethylsiloxane (viscosity 20mm ² /s (25°C))

Test Category 2 (Evaluation of Treatment Agents)

・Manufacture of drawn yarn A specific amount of ion-exchanged water was added to each of the treatment agents obtained as described above, and the mixture was uniformly mixed to prepare an aqueous liquid having a concentration of the treatment agent of 10%. The small particles of polyethylene terephthalate having an intrinsic viscosity of 0.64 and a titanium oxide content of 0.2% were dried by an ordinary method, and then spun at 295°C using an extruder. After cooling and hardening discharged from the spinning nozzle, the above-mentioned aqueous liquid was adhered to the moving yarn by a pilot oiling method using a metering pump so that the treatment agent was 1.0% with respect to the moving yarn. Then, it was bundled with a guide, and pulled by a pulling roll heated to 90°C at a speed of 1400 m/min, and then stretched 3.2 times between the pulling roll and the stretching roll rotating at a speed of 4800 m/min, An extension filament of 83.3 dtex (75 denier) of 36 filaments was produced. In the above-mentioned manufacturing method, evaluation was performed with respect to the scattering property. In addition, the emulsion stability of the treatment agent in water with unsatisfactory water quality was evaluated by the following method in terms of hard water stability. The results are shown in Tables 3 and 4.

・Evaluation of scattering properties For the drawn yarn obtained by the above method, the scattering state at the oil injection nozzle was visually checked for 10 minutes when the sleeve was produced. The scattering properties were evaluated using the following evaluation criteria. The results are shown in Tables 3 and 4 in the "scattering property" column.

◎◎ (Excellent): No scattering ◎ (Good): Scattering is confirmed but rare ○ (Fair): There are confirmed scattered but a small amount × (defective): Frequent and large scattering confirmed

・Evaluation of hard water stability About the treatment agent of each example prepared in Test Category 1, 15 parts of the treatment agent and 85 parts of the following hard water were uniformly mixed to prepare a hard water aqueous solution with a concentration of the treatment agent of 15%.

Hard water was water having a conductivity of 130 μS/cm when measured at 25°C.

Then, the prepared hard water aqueous solution was left to stand at 30° C. for 24 hours and then visually observed, and the precipitated particles were evaluated according to the following evaluation criteria. The results are shown in the column "Hard water stability" in Tables 3 and 4.

・Evaluation criteria for precipitated particles ◎◎ (excellent): Precipitated particles were not observed at all ⊚ (good): A few precipitated particles are observed ○ (Fair): Precipitated particles are observed, but dispersed × (defective): A large number of precipitated particles were observed and precipitation occurred

From the results in Tables 3 and 4, it is clear that the evaluations of the treatment agents in the respective Examples were acceptable in the evaluations of scattering properties and hard water stability. According to the present invention, the scattering of the oil agent in the spinning step can be reduced, and the stability of the emulsion in water with unsatisfactory water quality such as hard water can be improved.

Claims (7)

A treatment agent for synthetic fibers, comprising a smoothing agent, a nonionic surfactant, and an ionic surfactant, characterized in that: the smoothing agent contains the esters A1 shown in Chemical 1 below; the smoothing agent contains 40- The above-mentioned esters A1 in a proportion of 100% by mass; the above-mentioned nonionic surfactant contains alkylene oxide adducts of aliphatic alcohols having 4 to 24 carbon atoms having a branched chain structure;

(In Chemical 1, R ¹ : a saturated hydrocarbon group having 7 to 23 carbon atoms, or an unsaturated hydrocarbon group having 7 to 23 carbon atoms; X ¹ , Y ¹ , Z ¹ : a hydrogen atom, a methyl group, an ethyl group, a carbon number 3 to 3 21 linear saturated hydrocarbon group, C3-21 branched saturated hydrocarbon group, C3-21 linear unsaturated hydrocarbon group, or C3-21 branched unsaturated hydrocarbon group ; wherein, at least one of X ¹ and Y ¹ is a methyl group, an ethyl group, or the above-mentioned hydrocarbon group, and the sum of the carbon numbers of X ¹ , Y ¹ and Z ¹ is 5 to 21). The processing agent for synthetic fibers according to claim 1, wherein the smoothing agent further contains esters A2 shown in the following formula 2;

(In Formula 2, R ² : a saturated hydrocarbon group having 7 to 23 carbon atoms, or an unsaturated hydrocarbon group having 7 to 23 carbon atoms; X ² : hydrogen atom; Y ² : hydrogen atom; Z ² : hydrogen atom, methyl group, ethyl group group, linear saturated hydrocarbon group with 3 to 17 carbon atoms, saturated hydrocarbon group with branched chain structure with 3 to 17 carbon atoms, linear unsaturated hydrocarbon group with 3 to 17 carbon atoms, or branched hydrocarbon group with 3 to 17 carbon atoms chain structure of unsaturated hydrocarbon groups). The processing agent for synthetic fibers according to claim 2, wherein the ester A1 is contained in a ratio of 55 to 100 mass % when the total content of the ester A1 and the ester A2 is 100 mass %. The processing agent for synthetic fibers according to any one of claims 1 to 3, wherein X ¹ of the above-mentioned chemical compound 1 is a methyl group, an ethyl group, a linear saturated hydrocarbon group having 3 to 21 carbon atoms, and a carbon number of 3 to 21. A saturated hydrocarbon group with a branched chain structure, a linear unsaturated hydrocarbon group with a carbon number of 3 to 21, or an unsaturated hydrocarbon group with a branched chain structure with a carbon number of 3 to 21. The treatment agent for synthetic fibers according to any one of claims 1 to 4, wherein The said nonionic surfactant contains the compound which added the alkylene oxide of carbon number 2-4 in the ratio of 1-100 mol in total with respect to 1 mol of aliphatic alcohols having 4-14 carbon atoms which has a branched chain structure. The treating agent for synthetic fibers according to any one of claims 1 to 5, wherein in the above-mentioned chemical formula 1, the total number of carbon atoms of X ¹ , Y ¹ and Z ¹ is 6 to 12. A synthetic fiber characterized by adhering the treatment agent for synthetic fibers according to any one of claims 1 to 6.