WO2021251282A1

WO2021251282A1 - Synthetic fiber treatment agent and synthetic fibers

Info

Publication number: WO2021251282A1
Application number: PCT/JP2021/021315
Authority: WO
Inventors: 卓村上; 英里坪田; 久典村田
Original assignee: 竹本油脂株式会社
Priority date: 2020-06-11
Filing date: 2021-06-04
Publication date: 2021-12-16
Also published as: JP6745563B1; TW202204723A; TWI775478B; JP2021195642A

Abstract

The present invention addresses the problem of providing: a synthetic fiber treatment agent that can reduce the amount of tar and can reduce yarn sway; and synthetic fibers having the 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 and optionally a specific ester A2; the smoothing agent containing a ratio of 40-100 mass% of the ester A1; and the ester A1 making up a ratio of 50-100 mass% when the total content ratio of the ester A1 and the ester A2 is 100 mass%.

Description

Treatment agents for synthetic fibers and synthetic fibers

The present invention relates to a synthetic fiber treatment agent capable of reducing tar and thread wobbling, and a synthetic fiber to which such a synthetic fiber treatment agent is attached.

Generally, in the synthetic fiber spinning process, a treatment for adhering a synthetic fiber treatment agent to the surface of the filament yarn of the synthetic fiber is performed from the viewpoint of reducing friction and reducing fiber damage such as yarn breakage. be.

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

Japanese Unexamined Patent Publication No. 2012-92481

However, these conventional treatment agents for synthetic fibers have not been able to sufficiently cope with the reduction of tar in the spinning process and the reduction of yarn sway on the rollers.

The present invention has been made in view of such circumstances, and an object thereof is to provide a treatment agent for synthetic fibers capable of reducing tar and reducing yarn wobbling. Further, the synthetic fiber to which the processing agent for synthetic fiber is attached is provided.

As a result of research to solve the above-mentioned problems, the present inventors have found that it is correctly suitable to contain a predetermined ester compound and a surfactant as a smoothing agent in a treatment agent for synthetic fibers.

The processing agent for synthetic fibers for solving the above problems is a treatment agent for synthetic fibers containing a smoothing agent, a nonionic surfactant, and an ionic surfactant, and the smoothing agent is shown in Chemical formula 1 below. Ester A1 and optionally the ester A2 shown in Chemical formula 2 below are contained, and the ester A1 is contained in the smoothing agent in a proportion of 40 to 100% by mass, and the ester A1 and the ester A2 are contained. Assuming that the total content ratio is 100% by mass, the ester A1 is characterized by being contained in a ratio of 50 to 100% by mass.

(In Chemical formula 1
R ¹ : Saturated hydrocarbon group having 7 to 23 carbon atoms or unsaturated hydrocarbon group having 7 to 23 carbon atoms,
X ¹ , Y ¹ , Z ¹ : Hydrogen atom, methyl group, ethyl group, linear saturated hydrocarbon group with 3 to 17 carbon atoms, saturated hydrocarbon group with branched chain structure with 3 to 17 carbon atoms, carbon number A linear unsaturated hydrocarbon group having 3 to 17 or an unsaturated hydrocarbon group having a branched chain structure having 3 to 17 carbon atoms.

However, ^{at least one} ^{of X 1} and Y 1 is a methyl group, an ethyl group, or the hydrocarbon group, and the total number of carbon atoms of ^{X 1} , Y ¹ and Z ^{1 is 6 to 17.} )

(In Chemical formula 2
R ² : Saturated hydrocarbon group having 7 to 23 carbon atoms or 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, linear saturated hydrocarbon group with 3 to 17 carbon atoms, saturated hydrocarbon group with branched chain structure with 3 to 17 carbon atoms, linear chain with 3 to 17 carbon atoms Unsaturated hydrocarbon group or unsaturated hydrocarbon group having a branched chain structure having 3 to 17 carbon atoms. )
In the synthetic fiber treatment agent, X1 of Chemical formula ¹ is a saturated hydrocarbon having a methyl group, an ethyl group, a linear saturated hydrocarbon group having 3 to 17 carbon atoms, and a branched chain structure having 3 to 17 carbon atoms. A group, a linear unsaturated hydrocarbon group having 3 to 17 carbon atoms, or an unsaturated hydrocarbon group having a branched chain structure having 3 to 17 carbon atoms is preferable.

In the synthetic fiber treatment agent, the total number of carbon atoms ^{of X 1} , Y ¹ and Z ^{1 of Chemical formula 1 is preferably 6 to 12.}

The synthetic fiber for solving the above-mentioned problem is characterized in that the treatment agent for the synthetic fiber is attached.

According to the present invention, tar can be reduced and thread sway can be reduced.

(First Embodiment)
First, the first embodiment which embodies the synthetic fiber treatment agent (hereinafter, also referred to as a treatment agent) according to the present invention will be described. The treating agent of the present embodiment contains a smoothing agent, a nonionic surfactant, and an ionic surfactant.

The smoothing agent used in this embodiment contains the ester A1 shown in Chemical formula 3 below.

(In Chemical Substance 3
R ¹ : Saturated hydrocarbon group having 7 to 23 carbon atoms or unsaturated hydrocarbon group having 7 to 23 carbon atoms,
X ¹ , Y ¹ , Z ¹ : Hydrogen atom, methyl group, ethyl group, linear saturated hydrocarbon group with 3 to 17 carbon atoms, saturated hydrocarbon group with branched chain structure with 3 to 17 carbon atoms, carbon number A linear unsaturated hydrocarbon group having 3 to 17 or an unsaturated hydrocarbon group having a branched chain structure having 3 to 17 carbon atoms.

However, ^{at least one} ^{of X 1} and Y 1 is a methyl group, an ethyl group, or the hydrocarbon group, and the total number of carbon atoms of ^{X 1} , Y ¹ and Z ^{1 is 6 to 17.} )
One of these esters A1 may be used alone, or two or more thereof may be used in combination.

X ¹ of any of 3 Of these, a methyl group, an ethyl group, a saturated hydrocarbon group having a straight chain of carbon number of 3 to 17 saturated hydrocarbon group having a branched chain structure having 3 to 17 carbon atoms, 3 carbon atoms A compound which is a linear unsaturated hydrocarbon group of 17 or an unsaturated hydrocarbon group having a branched chain structure having 3 to 17 carbon atoms is preferable. In the case of such a compound, yarn sway can be further reduced. Further, in Chemical formula 3, a compound having a total carbon number of ^{X 1} , Y ¹ and Z ^{1 of 6 to 12 is preferable.} In the case of such a compound, tar can be further reduced.

The ^{hydrocarbon group constituting R 1} may be a linear saturated hydrocarbon group or a saturated hydrocarbon group having a branched chain structure. Further, it may be a linear unsaturated hydrocarbon group or an unsaturated hydrocarbon group having a branched chain structure.

Specific examples of the saturated hydrocarbon group of straight chain constituting R ¹ is, for example heptyl, octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl Examples thereof include a group, an octadecyl group, an icosyl group, a docosyl group, a tridecylic group and the like.

Specific examples of the saturated hydrocarbon group having a branched chain structure constituting R ¹ is, for example isoheptyl group, isooctyl group, an isononyl group, an isodecyl group, isoundecyl group, isododecyl group, an isotridecyl group, isotetradecyl group, iso-pentadecyl Examples thereof include a group, an isohexadecyl group, an isoheptadecyl group, an isooctadecyl group, an isoicosyl group, an isodocosyl group, an isotricosyl group and the like.

The ^{unsaturated hydrocarbon group constituting R 1} is an alkenyl group having one double bond as an unsaturated carbon bond, an alkazienyl group having two or more double bonds, an alkatienyl group, or the like. May be good. Further, it may be an alkynyl group having one triple bond as an unsaturated carbon bond, an alkadynyl group having two or more triple bonds, or the like. Specific examples of the linear unsaturated hydrocarbon group having one double bond in the hydrocarbon group include, for example, a heptenyl group, an octenyl group, a nonenyl group, a decenyl group, an undecenyl group, a dodecenyl group, a tridecenyl group, and a tetradecenyl group. , Pentadecenyl group, hexadecenyl group, heptadecenyl group, octadecenyl group, icosenyl group, docosenyl group, trichosenyl group and the like.

Specific examples of the unsaturated hydrocarbon group in the hydrocarbon group constituting R ¹ has a branched chain structure having one double bond, for example isoheptenyl group, isooctenyl group, Isononeniru group, Isodeseniru group, Isoundeseniru group, isododecenyl Group, isotridecenyl group, isotetradecenyl group, isopentadecenyl group, isohexadecenyl group, isoheptadecenyl group, isooctadecenyl group, isoicosenyl group, isodococenyl group, isotricosenyl group, etc. Can be mentioned.

Specific examples of the linear saturated hydrocarbon group having 3 to 17 carbon atoms constituting X ¹ , Y ¹ , or Z ¹ include, for example, a propyl group, a butyl group, a pentyl group, a hexyl group, a heptyl group, and an octyl group. Examples thereof include a nonyl group, a decyl group, an undecyl group, a dodecyl group, a tridecyl group, a tetradecyl group, a pentadecyl group, a hexadecyl group and a heptadecyl group.

Specific examples of the saturated hydrocarbon group having a branched chain structure having 3 to 17 carbon atoms constituting X ¹ , Y ¹ or Z ¹ include, for example, an isopropyl group, an isobutyl group, an isopentyl group, an isohexyl group, an isoheptyl group and an isooctyl. Examples thereof include a group, an isononyl group, an isodecyl group, an isoundecyl group, an isododecyl group, an isotridecyl group, an isotetradecyl group, an isopentadecyl group, an isohexadecyl group and an isoheptadecyl group.

The ^{unsaturated hydrocarbon group constituting X 1} , Y ¹ or Z ¹ may be an alkenyl group having one double bond as an unsaturated carbon bond, but an alkazienyl group having two or more double bonds. It may be a trienyl group or the like. Further, it may be an alkynyl group having one triple bond as an unsaturated carbon bond, an alkadynyl group having two or more triple bonds, or 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, for example, a propenyl group, a butenyl group, a pentenyl group, and a hexenyl group. , Heptenyl group, octenyl group, nonenyl group, decenyl group, undecenyl group, dodecenyl group, tridecenyl group, tetradecenyl group, pentadecenyl group, hexadecenyl group, heptadecenyl group and the like.

Specific examples of the unsaturated hydrocarbon group having a branched chain structure having one double bond in the hydrocarbon group constituting X ¹ , Y ¹ , or Z ^{1 include, for example, an isopropenyl group, an isobutenyl group, and an isopentenyl.} Group, Isohexenyl Group, Isoheptenyl Group, Isooctenyl Group, Isononenyl Group, Isodecenyl Group, Isoundecenyl Group, Isododecenyl Group, Isotridecenyl Group, Isotetradecenyl Group, Isopentadecenyl Group, Isohexadecenyl Group, Isohepta Examples thereof include a decenyl group.

Specific examples of the ester A1 include, for example, 2-propyl heptyl oleate, 2-methylnonyl oleate, 2-ethylheptyl decanoart, 2-methylnonyl tetracosanoart, 2-ethyldecyl stealert, 2-. Ethyltridecyloleate, 3,5,5-trimethylhexyloleate, 3,7-dimethyloctyloleate, 3-methylundecyloleate, 2-octyldodecylpalmitate, 2-octyldodecyloleate, 3- Methylheptadecyloleate and the like can be mentioned.

The smoothing agent used in this embodiment optionally contains the ester A2 shown in Chemical formula 4 below.

(In Chemical formula 4
R ² : Saturated hydrocarbon group having 7 to 23 carbon atoms or 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, linear saturated hydrocarbon group with 3 to 17 carbon atoms, saturated hydrocarbon group with branched chain structure with 3 to 17 carbon atoms, linear chain with 3 to 17 carbon atoms Unsaturated hydrocarbon group or unsaturated hydrocarbon group having a branched chain structure having 3 to 17 carbon atoms. )
These esters A2 may be used alone or in combination of two or more.

The ^{hydrocarbon group constituting R 2} may be a linear saturated hydrocarbon group or a saturated hydrocarbon group having a branched chain structure. Further, it may be a linear unsaturated hydrocarbon group or an unsaturated hydrocarbon group having a branched chain structure.

Specific examples of the saturated hydrocarbon group or the unsaturated hydrocarbon group constituting R ² include those exemplified as the saturated hydrocarbon group or the unsaturated hydrocarbon group constituting ^{R 1 of Chemical formula 3.}

Specific examples of the saturated hydrocarbon group or unsaturated hydrocarbon group constituting Z ² are exemplified as the saturated hydrocarbon group or unsaturated hydrocarbon group constituting ^{X 1} , Y ¹ or Z ^{1 of Chemical formula 3.} Can be mentioned.

Specific examples of the ester A2 include isotridecyl oleart, lauryl oleart, and oleyl laurate.

Assuming that the total content of ester A1 and ester A2 in the treatment agent is 100% by mass, the treatment agent contains ester A1 in a ratio of 50 to 100% by mass. By defining in such a range, the effect of the present invention can be improved.

As the smoothing agent used in this embodiment, a smoothing agent other than the above may be used in combination. As the smoothing agent other than the above, known ones can be appropriately adopted. Specific examples of the smoothing agent include (1) esters of aliphatic monoalcohol and aliphatic monocarboxylic acids such as (1) 2-ethylhexyl stealert, 2-decyltetradecyloleate, and 2-ethyltridecylpropionate. Compounds, ester compounds of (poly) oxyalkylene adducts obtained by adding an alkylene oxide having 2 to 4 carbon atoms to an aliphatic monoalcohol and an aliphatic monocarboxylic acid, (2) 1,6-hexanediol didecanoate, tri Ester compounds of aliphatic polyhydric alcohols and aliphatic monocarboxylic acids such as methylolpropane monooleart monolaurate, sorbitan trioleate, sorbitan monooleart, sorbitan monosteert, and glycerin monolaurate, (3) Estares of aliphatic monoalcohols and aliphatic polyvalent carboxylic acids such as lauryl adipert, diorail azelate, ditetradecylthiodipropionate, diisocetylthiodipropionate, bispolyoxyethylene lauryl ether adipate, etc. Compounds, ester compounds of (poly) oxyalkylene adducts obtained by adding an alkylene oxide having 2 to 4 carbon atoms to an aliphatic monoalcohol and an aliphatic polyvalent carboxylic acid, (4) benzyloleate, benzyllaurate and polyoxy Ester compounds of aromatic monoalcohol and aliphatic monocarboxylic acid such as propylenebenzyl steaert, (poly) oxyalkylene adduct and aliphatic monocarboxylic compound obtained by adding an alkylene oxide having 2 to 4 carbon atoms to the aromatic monoalcohol. An ester compound with an acid, (5) an ester compound of an aromatic polyvalent alcohol and an aliphatic monocarboxylic acid such as bisphenol A dilaurate and polyoxyethylene bisphenol A dilaurate, and an aromatic polyvalent alcohol having 2 to 4 carbon atoms. Aliphatic products such as ester compounds of (poly) oxyalkylene adduct to which alkylene oxide is added and aliphatic monocarboxylic acid, (6) bis2-ethylhexylphthalate, diisostearylisophthalate, trioctyl remeritate, etc. An ester compound of an alcohol and an aromatic polyvalent carboxylic acid, an ester compound of a (poly) oxyalkylene adduct having an alkylene oxide having 2 to 4 carbon atoms added to an aliphatic monoalcohol and an aromatic polyvalent carboxylic acid, (7). ) Used as a treatment agent for coconut oil, rapeseed oil, sunflower oil, soybean oil, sunflower oil, sesame oil, natural fats and oils such as fish oil and beef fat, (8) mineral oil, etc. Known smoothing agents can be mentioned. These smoothing agents may be used alone or in combination of two or more.

The smoothing agent contains ester A1 in a proportion of 40 to 100% by mass. By defining in such a range, the effect of the present invention can be improved.

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

As the nonionic surfactant used in this embodiment, known ones can be appropriately adopted. Specific examples of the nonionic surfactant include (1) a compound obtained by adding an alkylene oxide having 2 to 4 carbon atoms to an organic acid, an organic alcohol, an organic amine and / or an organic amide, for example, a polyoxyethylene dilauric acid ester. , Polyoxyethylene lauric acid ester, polyoxyethylene oleic acid ester, polyoxyethylene oleic acid diester, polyoxyethylene octyl ether, polyoxyethylene lauryl ether, polyoxyethylene lauryl ether methyl ether, polyoxyethylene polyoxypropylene lauryl ether , Polyoxypropylene lauryl ether methyl ether, polyoxyethylene oleyl ether, polyoxybutylene oleyl ether, polyoxyethylene polyoxypropylene nonyl ether, polyoxypropylene nonyl ether, polyoxyethylene polyoxypropylene octyl ether, 2-hexylhexanol Ethylene oxide adduct, ethylene oxide propylene oxide adduct of 2-ethylhexanol, polyoxyethylene 2-ethyl-1-hexyl ether, polyoxyethylene dodecyl ether, polyoxyethylene tridecyl ether, polyoxyethylene laurylamino ether, poly Ether-type nonionic surfactants such as oxyethylene lauroamide ether, polyoxyethylene tristyrene phenyl ether, ethylene oxide propylene oxide adduct of glycerin, (2) polyoxyalkylene sorbitan trioleate, ethylene oxide addition of trimethylolpropane. Diester of substance and stearic acid, polyoxyalkylene palm oil, polyoxyalkylene castor oil, polyoxyalkylene cured castor oil, polyoxyalkylene cured castor oil trioctanoate, maleic acid ester of polyoxyalkylene cured castor oil, stearer Polyoxyalkylene polyvalent alcohol fatty acid ester type nonionic surfactant such as acid ester or oleic acid ester, (3) Alkylamide type nonionic surfactant such as stearate diethanolamide and diethanolamine monolauroamide, (4) Examples thereof include polyoxyalkylene fatty acid amide-type nonionic surfactants such as polyoxyethylene diethanolamine monooleylamide, polyoxyethylene laurylamine, and polyoxyethylene beef fat amine.

The content of the nonionic surfactant in the treatment agent is appropriately set, but is preferably 5 to 70% by mass, more preferably 15 to 60% by mass. By defining in such a range, the effect of the present invention and the stability when formed into an emulsion can be improved.

As the ionic surfactant used in this embodiment, known ones can be appropriately adopted. Examples of ionic surfactants include anionic surfactants, cationic surfactants, and amphoteric surfactants. These components may be used alone or in combination of two or more.

As the anionic surfactant used in the present embodiment, known ones can be appropriately adopted. Specific examples of the anionic surfactant include (1) phosphate esters of aliphatic alcohols such as (1) lauryl phosphate ester salt, cetyl phosphate ester salt, octyl phosphate ester salt, oleyl phosphate ester salt, and stearyl phosphate ester salt. Salt, (2) At least one selected from ethylene oxide and propylene oxide for aliphatic alcohols such as polyoxyethylene lauryl ether phosphate ester salt, polyoxyethylene oleyl ether phosphate ester salt, and polyoxyethylene stearyl ether phosphate ester salt. Phosphate ester salt with alkylene oxide added, (3) Lauryl sulfonate, myristyl sulfonate, cetyl sulfonate, oleyl sulfonate, stearyl sulfonate, tetradecane sulfonate, dodecylbenzene sulfonate , An aliphatic sulfonate such as a secondary alkyl sulfonic acid (C13 to 15) salt or an aromatic sulfonate, (4) Sulfate of an aliphatic alcohol such as a lauryl sulfate ester salt, an oleyl sulfate ester salt, and a stearyl sulfate ester salt. Ester salts, (5) Polyoxyethylene lauryl ether sulfate ester salts, polyoxyalkylene (polyoxyethylene, polyoxypropylene) lauryl ether sulfate ester salts, polyoxyethylene oleyl ether sulfate ester salts, and other aliphatic alcohols with ethylene oxide and Sulfate ester salt with at least one alkylene oxide added selected from propylene oxide, (6) sesame oil fatty acid sulfate ester salt, sesame oil fatty acid sulfate ester salt, tall oil fatty acid sulfate ester salt, soybean oil fatty acid sulfate ester salt, rapeseed oil fatty acid sulfate Esters, palm oil fatty acid sulfates, pig fat fatty acid sulfates, beef fat fatty acid sulfates, whale oil fatty acid sulfates and other fatty acid sulfates, (7) castor oil sulfates, sesame oil sulfates , Thor oil sulfate, soybean oil sulfate, rapeseed oil sulfate, palm oil sulfate, pork fat sulfate, beef fat sulfate, whale oil sulfate, etc. Examples thereof include sulfate ester salts, (8) fatty acid salts such as laurate, oleate and stearate, and (9) sulfosuccinic acid ester salts of aliphatic alcohols such as dioctyl sulfosuccinate. Examples of the counterion of the anionic surfactant include alkali metal salts such as potassium salt and sodium salt, and alkanolamine salts such as ammonium salt and triethanolamine.

As the cationic surfactant used in the present embodiment, known ones can be appropriately adopted. Specific examples of the cationic surfactant include lauryltrimethylammonium chloride, cetyltrimethylammonium chloride, stearyltrimethylammonium chloride, behenyltrimethylammonium chloride, didecyldimethylammonium chloride and the like.

As the amphoteric surfactant used in the present embodiment, known amphoteric surfactants can be appropriately adopted. Specific examples of the amphoteric tenside include a betaine-type amphoteric tenside.

The content of the ionic surfactant in the treatment agent is appropriately set, but is preferably 1 to 20% by mass, more preferably 3 to 16% by mass, and further preferably 6 to 13% by mass. By being defined in such a range, the effect of the present invention, the stability when formed into an emulsion, or the antistatic property can be improved.

(Second Embodiment)
Next, a second embodiment in which the synthetic fiber according to the present invention is embodied will be described. The treatment agent of the first embodiment is attached to the synthetic fiber of the present embodiment. The form of the treating agent for adhering the treating agent to the synthetic fiber may be a diluted solution diluted with a diluting solvent, or may be an organic solvent solution or an aqueous solution. The synthetic fiber of the present embodiment is produced, for example, in the form of a diluted solution such as an aqueous solution, through a step of adhering a treatment agent to the synthetic fiber in, for example, a spinning step, a drawing step, or the like. The diluted solution attached to the synthetic fiber may evaporate water by a drying step.

Specific examples of the synthetic fiber to be produced are not particularly limited, and for example, (1) polyester fiber such as polyethylene terephthalate, polypropylene terephthalate and polylactic acid ester, (2) polyamide fiber such as nylon 6 and nylon 66, and the like. Examples thereof include polyacrylic fibers such as polyacrylic and modal acrylic, and (4) polyolefin fibers such as polyethylene and polypropylene.

The amount of the treatment agent attached to the synthetic fiber is not particularly limited, but it is preferable to attach the treatment agent in a proportion of 0.1 to 3% by mass (not containing a solvent such as water) with respect to the synthetic fiber. With such a configuration, the effect of the present invention can be further improved. Further, the method of adhering the treatment agent is not particularly limited, and for example, a known method such as a roller refueling method, a guide refueling method using a measuring pump, a dip refueling method, or a spray refueling method can be adopted.

According to the treatment agent and synthetic fiber of the above embodiment, the following effects can be obtained.

(1) The treatment agent of the above embodiment contains a smoothing agent, a nonionic surfactant, and an ionic surfactant, and the smoothing agent contains the above-mentioned ester A1 and optionally the above-mentioned ester A2, and the smoothing agent. Assuming that ester A1 is contained in a proportion of 40 to 100% by mass and the total content of ester A1 and ester A2 is 100% by mass, ester A1 is contained in a proportion of 50 to 100% by mass. .. Therefore, the generation of tar can be reduced. In particular, tar generated during high-temperature and high-speed machining in the spinning process can be reduced, thereby improving detergency. In addition, it is possible to reduce the yarn sway of the running yarn of the synthetic fiber to which the treatment agent is applied, for example, the running yarn on the godet roller.

The above embodiment may be changed as follows.

-The treatment agent of the present embodiment may be stored in the form of an aqueous liquid containing water. The content ratio of the treatment agent and water in the aqueous solution is not particularly limited. Assuming that the content ratio of the treating agent in the aqueous liquid is 100 parts by mass, the content ratio of water in the aqueous liquid is preferably 5 to 30 parts by mass, more preferably 5 to 20 parts by mass. By specifying such a blending ratio, the handleability of the aqueous liquid can be improved and the stability over time can be improved.

-The treatment agent of the present embodiment includes a stabilizer, an antistatic agent, a binder, an antioxidant, an ultraviolet absorber, and an antifoaming agent for maintaining the quality of the treatment agent, as long as the effects of the present invention are not impaired. Ingredients usually used in a treatment agent such as an agent (silicone compound) may be further added.

Specific examples of the antioxidant include (1) 1,3,5-tris (3', 5'-di-t-butyl-4-hydroxybenzyl) isocyanuric acid and 1,3,5-tris (4). -T-Butyl-3-hydroxy-2,6-dimethylbenzyl) isocyanuric acid, 1,3,5-trimethyl-2,4,6-tris (3,5-di-t-butyl-4-hydroxybenzyl) Benzene, 2,2'-methylene-bis (4-methyl-6-t-butylphenol), 1,1,3-tris (2-methyl-4-hydroxy-5-t-butylphenyl) butane, tetrakis [methylene] -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) octyldiphenylphosphite, trisnonylphenylphosphite, tetratridecyl-4,4'-butylidene-bis- (2-t-butyl-5-methylphenol) diphosphite Phosphite-based antioxidants such as (3) 4,4'-thiobis- (6-t-butyl-3-methylphenol), dilauryl-3,3'-thioether-based antioxidants such as thiodipropionate. And so on. These antioxidants may be used alone or in combination of two or more.

Hereinafter, examples and the like will be given in order to more specifically explain the configuration and effect of the present invention, but the present invention is not limited to these examples. In the following Examples and Comparative Examples, "parts" means "parts by mass" and "%" means "% by mass".

Test Category 1 (Preparation of aqueous solution of synthetic fiber treatment agent)
The aqueous solution of the treatment agent used in each Example and each Comparative Example was obtained by the following preparation method using each component shown in Tables 1 to 4.

Table 1 shows the esters A1 (A1-1 to 12) shown in Chemical formula 3 described above. The types of ester A1 are shown in the "ester A1" column of Table 1. The types of ^{R 1} , X ¹ , Y ¹ , and Z ¹ in Chemical formula 3 are shown in ^{the "R 1} " column, "X ¹ " column, "Y ¹ " column, and "Z ¹ " column of Table 1, respectively. .. Also ^shows the total number of carbon atoms of X 1, ^{Y 1} and ^{Z 1} in the "total number of carbon atoms of ^X 1, ^{Y 1} and ^{Z 1"} column of Table 1.

For reference, an example of synthesis of 2-propyl heptyloleate (A1-1) is shown below.

-Synthesis of 2-propyl heptyl oleate (A1-1) 282 g (1 mol) of oleic acid and 158 g (1 mol) of 2-propyl heptyl alcohol are charged in a flask, melted under nitrogen gas at 75 ° C., and then a catalyst. As a result, 0.6 g of paratoluenesulfonic acid was added, and the mixture was reacted at 120 ° C. under a reduced pressure of 2 mmHg for 4 hours. Then, the pressure was returned to normal pressure at 105 ° C. under nitrogen gas, and an adsorbent was added to treat the catalyst. Then, the mixture was filtered at 90 ° C. to obtain a mixture containing ester A1-1.

Isolation treatment was carried out by column chromatography using silica gel in order to separate trace impurities (by-products, unreacted alcohol, unreacted fatty acid, etc.) from the ester A1-1 obtained by the above method.

Ester A1-1 isolated by column was ^{analyzed by 1} H-NMR (MERCURY plus NMR Spectrometer System, 300 MHz, CDCl ₃ manufactured by VALIAN). By NMR, it is found that there is a doublet peak at 3.9 to 4.1 ppm, that is, a peak indicating that ^{X 1} ^{in Chemical formula 3 is a hydrocarbon group (note that if X 1} is a hydrogen atom, a triplet peak). confirmed. Moreover, it was confirmed that there was a molecular ion peak (m / z = 422) of MS by measurement by GC-MS.

Table 2 shows the esters A2 (A2-1 to 3) shown in Chemical formula 4 described above. The types of ester A2 are shown in the "ester A2" column of Table 2. ^{The types of R 2} , X ² , Y ² , and Z ² in Chemical formula 4 are shown in the "R ² " column, "X ² " column, "Y ² " column, and "Z ² " column of Table 2, respectively.

-Preparation of an aqueous liquid containing a treatment agent (Example 1)
50% 2-propyl heptyl oleate (A1-1) as a smoothing agent, 15% diester (B-1) of oleic acid of polyoxyethylene (mass average molecular weight 600) as a nonionic surfactant, of castor oil 15% ethylene oxide 20 mol adduct (B-2), 10% ethylene oxide 7 mol adduct of lauryl alcohol (B-3), polyoxyethylene as an ionic surfactant (2 mol: ethylene oxide adduct mol) The number is shown (hereinafter, the same applies). 4.9% (C-1) of a salt of lauryl ether phosphate ester and potassium (C-1), secondary sodium alkylsulfonate (13-15 carbon atoms) (C-2). 4%, potassium oleate (C-3) 1%, 1,1,3-tris (2-methyl-4-hydroxy-5-t-butylphenyl) butane (D-1) as an antioxidant. 0.1% was uniformly mixed to obtain a mixture as a treatment agent of Example 1.

Further, when the treatment agent is 100 parts by mass, 11.1 parts by mass of ion-exchanged water is added and uniformly mixed, and the water-based product containing the treatment agent of Example 1 is contained so that the water content in the aqueous liquid becomes 10%. The liquid was prepared.

-Preparation of Aqueous Liquids Containing Treatment Agents (Examples 2 to 26 and Comparative Examples 1 to 8) Examples 2 to 2 using the components shown in Tables 3 and 4 in the same manner as the preparation of the aqueous liquid of Example 1. An aqueous solution containing the treatment agents of 26 and Comparative Examples 1 to 8 was prepared. In Tables 3 and 4, the types of each component in the treatment agent are shown, and the blending ratio (%) of each component when the component (treatment agent) other than water is 100% is shown. Further, the addition rate (parts) of water when the treatment agent is 100 parts is shown.

The types and contents of smoothing agents, the types and contents of nonionic surfactants, the types and contents of ionic surfactants, and the types and contents of other components in the treatment agents of each example are shown in Tables 3 and 4. It is as shown in the "smoothing agent" column, the "nonionic surfactant" column, the "ionic surfactant" column, and the "other component" column, respectively. The mass ratio of the content of the ester A1 in the smoothing agent is the mass ratio of the ester A1 in the "mass ratio: ester A1 / smoothing agent" column of Table 1, when the total content ratio of the ester A1 and the ester A2 is 100%. The mass ratio of the content of is shown in the column of "mass ratio: ester A1 / (ester A1 + ester A2)" in Tables 3 and 4. The addition rate (part) of water is shown in the "water" column of Tables 3 and 4.

In Tables 3 and 4,
a-1: 2-ethylhexyl steaert a-2: 2-decyltetradecyloleate a-3: rapeseed oil a-4: mineral oil (180 redwood seconds, 30 ° C)
a-5: 2-Ethyltridecylpropionate a-6: 2-decyltetradecanol and thiodipropionic acid diester B-1: Polyoxyethylene (mass average molecular weight 600) oleic acid diester B-2 : 20 mol of ethylene oxide adduct of castor oil B-3: 7 mol of ethylene oxide adduct of lauryl alcohol B-4: 12 mol of ethylene oxide adduct of lauric acid B-5: 5 mol of ethylene oxide of glycerin and 2 mol of propylene oxide B-6: 24 mol of ethylene oxide adduct of trimethylolpropane and diester of stearic acid B-7: 15 mol of propylene oxide of 2-ethylhexanol-block adduct of 13 mol of ethylene oxide B-8: 25 mol adduct of ethylene oxide of hardened castor oil B-9: 15 mol adduct of ethylene oxide of beef alkylamine C-1: Polyoxyethylene (2 mol) Salt of lauryl ether phosphate and potassium C-2: 2 Classic sodium alkyl sulfonate (13-15 carbon atoms)
C-3: Potassium oleate D-1: 1,1,3-Tris (2-methyl-4-hydroxy-5-t-butylphenyl) butane D-2: Triethylene glycol-bis [3- (3- (3- (3-) t-Butyl-5-methyl-4-hydroxyphenyl) propionate]
D-3: Polydimethylsiloxane (viscosity 20 mm ² / s (25 ° C))
Is shown.

Test category 2 (evaluation of treatment agent)
-Production of drawn yarn A predetermined amount of ion-exchanged water was further added to each of the aqueous liquids obtained as described above, and the mixture was uniformly mixed to prepare an emulsion having a concentration of 10% of the treatment agent. Chips of polyethylene terephthalate having an intrinsic viscosity of 0.64 and a titanium oxide content of 0.2% were dried by a conventional method and then spun at 295 ° C. using an extruder. After being discharged from the mouthpiece and cooled and solidified, the above emulsion was attached to the running yarn so as to be 1.0% as a treatment agent by a guide lubrication method using a measuring pump. Then, the yarn was focused by a guide, picked up by a pick-up roller heated to 90 ° C. at a speed of 1400 m / min, and then stretched 3.2 times between the pick-up roller and a stretching roller rotating at a speed of 4800 m / min. A drawn yarn of 83.3 decitex (75 denier) 36 filaments was produced. Using the produced drawn yarn, yarn sway was evaluated as spinning fluff and yarn breakage. In addition, tar related to the treatment agent was evaluated by the following method. The results are shown in Tables 3 and 4.

Evaluation of Spinning Fluff The package of the drawn yarn obtained by the above method was wound at a yarn speed of 500 m / min for 10 minutes in an atmosphere of 25 ° C. × 65% RH.

-Evaluation of fluff Immediately before winding at this time, the number of fluff was measured for 10 minutes with a fluff counting device (trade name DT-105 manufactured by Toray Engineering Co., Ltd.), and the spun fluff was evaluated according to the following evaluation criteria. The results are shown in the "spinning fluff" column of Tables 3 and 4.

◎ (Good): When the number of fluffs in 10 minutes is 0 to 3 ○ (Yes): When the number of fluffs in 10 minutes is 4 to 6 × (Defective): Number of fluffs in 10 minutes When the number is 7 or more ・ Evaluation of spun yarn breakage The yarn was wound for 24 hours during the production of the drawn yarn. The number of times the yarn was broken during winding for 24 hours was measured, and the spinning yarn was evaluated according to the following evaluation criteria. The results are shown in the "spinning and yarn breakage" columns of Tables 3 and 4.

・ Evaluation of thread breakage ◎ (Good): When the number of thread breaks in 24 hours is 0 ○ (Yes): When the number of thread breaks in 24 hours is 1 to 4 × (Defective): In 24 hours When the number of yarn breaks is 5 or more ・ Evaluation of tar The tar was determined by the following method as the amount of tar.

-Amount of tar 2 g of the treatment agent for synthetic fibers was taken and heated on a hot plate heated to 220 ° C. for 24 hours. The mass after heat treatment was measured and the amount of tar was evaluated according to the following evaluation criteria. The results are shown in the "Tar amount" column of Tables 3 and 4.

◎ (Good): When the residual amount after 24 hours is less than 40% ○ (Yes): When the residual amount after 24 hours is 40% or more and less than 60% × (Defective): The residual amount after 24 hours is In the case of 60% or more As is clear from the results in Tables 3 and 4, the treatment agent of each example was evaluated as above in terms of the amount of tar and the evaluation of fluff and yarn breakage in the spinning process. According to the present invention, tar can be reduced and yarn wobbling can be reduced.

Claims

A treatment agent for synthetic fibers containing a smoothing agent, a nonionic surfactant, and an ionic surfactant, wherein the smoothing agent is shown in the ester A1 shown in Chemical formula 1 below, and optionally in Chemical formula 2 below. Assuming that the ester A2 is contained, the ester A1 is contained in the smoothing agent at a ratio of 40 to 100% by mass, and the total content of the ester A1 and the ester A2 is 100% by mass, the ester A1 A treatment agent for synthetic fibers, which comprises 50 to 100% by mass of the ester.

(In Chemical formula 1
R 1 : Saturated hydrocarbon group having 7 to 23 carbon atoms or unsaturated hydrocarbon group having 7 to 23 carbon atoms.
X 1 , Y 1 , Z 1 : Hydrogen atom, methyl group, ethyl group, linear saturated hydrocarbon group with 3 to 17 carbon atoms, saturated hydrocarbon group with branched chain structure with 3 to 17 carbon atoms, carbon number A linear unsaturated hydrocarbon group having 3 to 17 or an unsaturated hydrocarbon group having a branched chain structure having 3 to 17 carbon atoms.
However, at least one of X 1 and Y 1 is a methyl group, an ethyl group, or the hydrocarbon group, and the total number of carbon atoms of X 1 , Y 1 and Z 1 is 6 to 17. )

(In Chemical formula 2
R 2 : Saturated hydrocarbon group having 7 to 23 carbon atoms or 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, linear saturated hydrocarbon group with 3 to 17 carbon atoms, saturated hydrocarbon group with branched chain structure with 3 to 17 carbon atoms, linear chain with 3 to 17 carbon atoms Unsaturated hydrocarbon group or unsaturated hydrocarbon group having a branched chain structure having 3 to 17 carbon atoms. )
X1 of Chemical formula 1 is a methyl group, an ethyl group, a linear saturated hydrocarbon group having 3 to 17 carbon atoms, a saturated hydrocarbon group having a branched chain structure having 3 to 17 carbon atoms, and 3 to 17 carbon atoms. The treatment agent for synthetic fibers according to claim 1, which is a linear unsaturated hydrocarbon group or an unsaturated hydrocarbon group having a branched chain structure having 3 to 17 carbon atoms.
The processing agent for synthetic fibers according to claim 1 or 2, wherein the total number of carbon atoms of X 1 , Y 1 and Z 1 in Chemical formula 1 is 6 to 12.
Synthetic fiber to which the treatment agent for synthetic fiber according to any one of claims 1 to 3 is attached.