Composition comprising acrylic synthetic fiber treatment agent, preparation method of diluent of composition comprising acrylic synthetic fiber treatment agent, and acrylic synthetic fiber

Abstract

To provide: a composition comprising an acrylic synthetic fiber treatment agent which satisfies both of spinnability in the spinning step to obtain yarn from acrylic synthetic fiber and formulation stability when stored for a long term; a preparation method of a diluent of the composition comprising an acrylic synthetic fiber treatment agent; and acrylic synthetic fiber.SOLUTION: A composition comprising an acrylic synthetic fiber treatment agent comprises: an acrylic synthetic fiber treatment agent comprising a phosphate compound (A) having a specific composition and a specific unsaturated compound (B); and the following solvent (S), where a mass ratio of a total of the phosphate compound (A) and the unsaturated compound (B) to the solvent (S), (phosphate compound (A)+unsaturated compound (B)) / solvent (S), is 0.1 to 2.5 and a mass ratio of the phosphate compound (A) to the unsaturated compound (B), phosphate compound (A) / unsaturated compound (B), is 1.0 to 26.0.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a composition containing a treatment agent for acrylic synthetic fibers, which contains a phosphoric acid compound (A), an unsaturated compound (B) having a specific chemical structure, and a solvent (S) in a specific compositional ratio, a method for preparing a diluted solution of the treatment agent-containing composition for acrylic synthetic fibers, and acrylic synthetic fibers. [Background technology]

[0002] Acrylic synthetic fibers are made by dissolving acrylonitrile copolymers obtained from acrylonitrile and copolymerization raw materials in a solvent, spinning them by wet spinning, stretching, heat treatment, etc. Acrylic synthetic fibers have properties similar to wool among chemical fibers, and are characterized by their bulkiness and soft texture. In addition, they have excellent dyeability with cationic dyes, making them the most vividly dyed synthetic fibers, and are resistant to chemicals such as acids and alkalis, and have excellent weather resistance against deterioration by sunlight and rainwater. It is known that treatment agents for acrylic synthetic fibers contain a phosphate compound as the main component in order to obtain excellent spinnability in the spinning process of obtaining spun yarn from acrylic synthetic fibers. However, due to the characteristics of the phosphate compound, there is a problem that the formulation stability is significantly reduced when mixed with components such as nonionic surfactants and cationic surfactants. A treatment agent for acrylic synthetic fibers that satisfies both the spinnability in the spinning process for obtaining spun yarn from acrylic synthetic fibers and the formulation stability of the treatment agent itself has not yet been proposed. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2002-088654 A [Patent Document 2] JP 2005-154992 A Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present invention is to provide a composition containing a treatment agent for acrylic synthetic fibers, which satisfies both spinnability in a spinning process for obtaining spun yarn from acrylic synthetic fibers and formulation stability during long-term storage, a method for preparing a diluted solution of the composition containing a treatment agent for acrylic synthetic fibers, and acrylic synthetic fibers. [Means for solving the problem]

[0005] As a result of intensive research conducted by the present inventors to solve the above-mentioned problems, it has been found that a composition containing a treatment agent for acrylic synthetic fibers that satisfies both spinnability in the spinning process for obtaining spun yarn from acrylic synthetic fibers and formulation stability during long-term storage can be obtained by containing a phosphoric acid compound (A) having a specific compositional ratio, an unsaturated compound (B) having a specific chemical structure, and a solvent (S) in a specific compositional ratio, thereby solving the above-mentioned problems.

[0006] Specifically, the present invention relates to the following items. 1. A composition containing a treatment agent for acrylic synthetic fibers, which contains a treatment agent for acrylic synthetic fibers containing a phosphoric acid compound (A) and the following unsaturated compound (B), and the following solvent (S), wherein the mass ratio of the total of the phosphoric acid compound (A) and the unsaturated compound (B) to the solvent (S) is (phosphoric acid compound (A) + unsaturated compound (B)) / solvent (S) = 0.1 to 2.5, and the mass ratio of the phosphoric acid compound (A) and the unsaturated compound (B) is phosphoric acid compound (A) / unsaturated compound (B) = 1.0 to 26.0, and the phosphoric acid compound (A) is a phosphoric acid ester P1 represented by the following formula (1), a phosphoric acid ester P2 represented by the following formula (2), a phosphoric acid ester P3 represented by the following formula (3), (3) A composition containing a treatment agent for acrylic synthetic fibers, which contains a phosphate ester P3 and an inorganic phosphate compound P4 as shown in the formula (3), and is characterized in that, when the sum of the P nucleus NMR integral ratios attributable to the phosphate ester P1, the phosphate ester P2, the phosphate ester P3 and the inorganic phosphate compound P4 is taken as 100%, the P nucleus NMR integral ratio attributable to the phosphate ester P1 is 20 to 90%, the P nucleus NMR integral ratio attributable to the phosphate ester P2 is 5 to 60%, the P nucleus NMR integral ratio attributable to the phosphate ester P3 is 0.1 to 40%, and the P nucleus NMR integral ratio attributable to the inorganic phosphate compound P4 is 0.1 to 40%. Unsaturated compound (B): at least one selected from fatty acids having 14 to 22 carbon atoms and an unsaturated bond in the molecule, and aliphatic alcohols having 16 to 22 carbon atoms and an unsaturated bond in the molecule. Solvent (S): A solvent having a boiling point of 105° C. or less at atmospheric pressure. [ka] (In formula (1), R 1 A residue obtained by removing a hydroxyl group from an aliphatic monohydric alcohol having 8 to 20 carbon atoms, or a residue obtained by removing a hydroxyl group from a product obtained by adding a total of 1 to 20 moles of alkylene oxide having 2 to 3 carbon atoms per mole of aliphatic monohydric alcohol having 8 to 20 carbon atoms. M 1 : A hydrogen atom, or an alkali metal. M 2: Hydrogen atom, or alkali metal. [ka] (In formula (2), R 2 A residue obtained by removing a hydroxyl group from an aliphatic monohydric alcohol having 8 to 20 carbon atoms, or a residue obtained by removing a hydroxyl group from a product obtained by adding a total of 1 to 20 moles of alkylene oxide having 2 to 3 carbon atoms per mole of aliphatic monohydric alcohol having 8 to 20 carbon atoms. R 3 A residue obtained by removing a hydroxyl group from an aliphatic monohydric alcohol having 8 to 20 carbon atoms, or a residue obtained by removing a hydroxyl group from a product obtained by adding a total of 1 to 20 moles of alkylene oxide having 2 to 3 carbon atoms per mole of aliphatic monohydric alcohol having 8 to 20 carbon atoms. M 3 : Hydrogen atom, or alkali metal. [ka] (In formula (3), R 4 A residue obtained by removing a hydroxyl group from an aliphatic monohydric alcohol having 8 to 20 carbon atoms, or a residue obtained by removing a hydroxyl group from a product obtained by adding a total of 1 to 20 moles of alkylene oxide having 2 to 3 carbon atoms per mole of aliphatic monohydric alcohol having 8 to 20 carbon atoms. R 5 A residue obtained by removing a hydroxyl group from an aliphatic monohydric alcohol having 8 to 20 carbon atoms, or a residue obtained by removing a hydroxyl group from a product obtained by adding a total of 1 to 20 moles of alkylene oxide having 2 to 3 carbon atoms per mole of aliphatic monohydric alcohol having 8 to 20 carbon atoms. M 4 : A hydrogen atom, or an alkali metal. M 5 : Hydrogen atom, or alkali metal. 2. The composition containing a treating agent for acrylic synthetic fibers according to 1., wherein the solvent (S) is water. 3. The composition containing a treatment agent for acrylic synthetic fibers according to 1., wherein the treatment agent for acrylic synthetic fibers further contains the following oil (C): Oil (C): At least one selected from hydrocarbon compounds, oils and fats, and esters, all of which are liquid at 70°C. 4. When the total content of the phosphoric acid compound (A), the unsaturated compound (B), and the oil (C) is 100 parts by mass, The composition containing a treatment agent for acrylic synthetic fibers according to 3., comprising 40 to 90 parts by mass of the phosphoric acid compound (A) and the unsaturated compound (B) in total, and 10 to 60 parts by mass of the oil (C). 5. The composition containing a treatment agent for acrylic synthetic fibers according to 3., wherein the treatment agent for acrylic synthetic fibers further contains the following nonionic surfactant (D). Nonionic surfactant (D): At least one selected from polyoxyalkylene alkyl ethers, polyoxyalkylene alkenyl ethers, polyoxyalkylene alkyl esters, polyoxyalkylene alkenyl esters, and polyoxyalkylene alkyl phenyl ethers. 6. When the total content of the phosphoric acid compound (A), the unsaturated compound (B), the oil (C), and the nonionic surfactant (D) is 100 parts by mass, The composition containing a treatment agent for acrylic synthetic fibers according to 5. above, comprising 30 to 90 parts by mass of the phosphoric acid compound (A) and the unsaturated compound (B) in total, 5 to 40 parts by mass of the oil (C), and 5 to 45 parts by mass of the nonionic surfactant (D). 7. The composition containing a treatment agent for acrylic synthetic fibers according to 5., wherein the treatment agent for acrylic synthetic fibers further contains the following polyether compound (E). Polyether compound (E): A polyoxyalkylene glycol having at least one constituent unit selected from an oxyethylene group and an oxypropylene group. 8. When the total content of the phosphoric acid compound (A), the unsaturated compound (B), the oil (C), the nonionic surfactant (D) and the polyether compound (E) is 100 parts by mass, 7. The composition containing a treatment agent for acrylic synthetic fibers according to 7., comprising 10 to 45 parts by mass of the phosphoric acid compound (A) and the unsaturated compound (B) in total, 5 to 30 parts by mass of the oil (C), 5 to 35 parts by mass of the nonionic surfactant (D), and 20 to 80 parts by mass of the polyether compound (E). 9. A composition containing a first treatment agent for acrylic synthetic fibers according to any one of 1. to 6., characterized in that the composition contains a second treatment agent for acrylic synthetic fibers, which contains the following polyether compound (E). Polyether compound (E): A polyoxyalkylene glycol having at least one constituent unit selected from an oxyethylene group and an oxypropylene group. 10. A two-component treatment agent set for acrylic synthetic fibers, comprising a set containing, as a first treatment agent-containing composition for acrylic synthetic fibers, the treatment agent-containing composition for acrylic synthetic fibers described in any one of 1. to 6., and, as a second treatment agent for acrylic synthetic fibers, the following polyether compound (E). Polyether compound (E): A polyoxyalkylene glycol having at least one constituent unit selected from an oxyethylene group and an oxypropylene group. 11. A method for preparing a diluted solution of a composition containing a treatment agent for acrylic synthetic fibers, comprising adding the composition containing a treatment agent for acrylic synthetic fibers described in any one of 1. to 8. to water, and adjusting the non-volatile content concentration to 0.01% by mass or more and 20% by mass or less. 12. A method for preparing a diluted solution of the two-component treatment set for acrylic synthetic fibers described in 10. above, comprising adding the two-component treatment set for acrylic synthetic fibers described in 12. above to water and adjusting the non-volatile content concentration to 0.01% by mass or more and 20% by mass or less. 13. An acrylic synthetic fiber having adhered thereto a non-volatile component of the composition containing a treatment agent for acrylic synthetic fiber according to any one of 1. to 8. Effect of the Invention

[0007] The composition containing a treatment agent for acrylic synthetic fibers of the present invention can impart excellent spinnability to acrylic synthetic fibers. In addition, in the spinning process in which spun yarn is obtained from the acrylic synthetic fibers, a uniform web can be obtained during carding, and the evenness of the sliver can be improved in the drawing process. In addition, the composition containing a treatment agent for acrylic synthetic fibers of the present invention has excellent formulation stability even when stored for a long period of time, and is therefore useful because separation or precipitation does not occur during transportation or storage of the composition containing a treatment agent for acrylic synthetic fibers. In other words, the composition containing a treatment agent for acrylic synthetic fibers of the present invention is extremely useful because it satisfies both the spinnability in the spinning process for obtaining spun yarn from acrylic synthetic fibers and the formulation stability during long-term storage. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] The treating agent for acrylic synthetic fibers of the present invention contains a phosphoric acid compound (A) and an unsaturated compound (B) having a specific chemical structure. <Phosphate compound (A)> The phosphoric acid compound (A) in the present invention is a mixture containing a phosphoric acid ester P1 represented by the following formula (1), a phosphoric acid ester P2 represented by the following formula (2), a phosphoric acid ester P3 represented by the following formula (3), and an inorganic phosphoric acid compound P4, in which, when the sum of the P nuclear NMR integral ratios attributable to the phosphate ester P1, the phosphate ester P2, the phosphate ester P3, and the inorganic phosphoric acid compound P4 is taken as 100%, the P nuclear NMR integral ratio attributable to the phosphate ester P1 is 20 to 90%, the P nuclear NMR integral ratio attributable to the phosphate ester P2 is 5 to 60%, the P nuclear NMR integral ratio attributable to the phosphate ester P3 is 0.1 to 40%, and the P nuclear NMR integral ratio attributable to the inorganic phosphoric acid compound P4 is 0.1 to 40%. [ka] (In formula (1), R 1A residue obtained by removing a hydroxyl group from an aliphatic monohydric alcohol having 8 to 20 carbon atoms, or a residue obtained by removing a hydroxyl group from a product obtained by adding a total of 1 to 20 moles of alkylene oxide having 2 to 3 carbon atoms per mole of aliphatic monohydric alcohol having 8 to 20 carbon atoms. M 1 : A hydrogen atom, or an alkali metal. M 2 : Hydrogen atom, or alkali metal. [ka] (In formula (2), R 2 A residue obtained by removing a hydroxyl group from an aliphatic monohydric alcohol having 8 to 20 carbon atoms, or a residue obtained by removing a hydroxyl group from a product obtained by adding a total of 1 to 20 moles of alkylene oxide having 2 to 3 carbon atoms per mole of aliphatic monohydric alcohol having 8 to 20 carbon atoms. R 3 A residue obtained by removing a hydroxyl group from an aliphatic monohydric alcohol having 8 to 20 carbon atoms, or a residue obtained by removing a hydroxyl group from a product obtained by adding a total of 1 to 20 moles of alkylene oxide having 2 to 3 carbon atoms per mole of aliphatic monohydric alcohol having 8 to 20 carbon atoms. M 3 : Hydrogen atom, or alkali metal. [ka] (In formula (3), R 4 A residue obtained by removing a hydroxyl group from an aliphatic monohydric alcohol having 8 to 20 carbon atoms, or a residue obtained by removing a hydroxyl group from a product obtained by adding a total of 1 to 20 moles of alkylene oxide having 2 to 3 carbon atoms per mole of aliphatic monohydric alcohol having 8 to 20 carbon atoms. R 5 A residue obtained by removing a hydroxyl group from an aliphatic monohydric alcohol having 8 to 20 carbon atoms, or a residue obtained by removing a hydroxyl group from a product obtained by adding a total of 1 to 20 moles of alkylene oxide having 2 to 3 carbon atoms per mole of aliphatic monohydric alcohol having 8 to 20 carbon atoms. M 4 : A hydrogen atom, or an alkali metal. M 5 : Hydrogen atom, or alkali metal.

[0009] R in general formula (1) 1 R in general formula (2) 2 , R 3 R in general formula (3) 4 , R 5 Examples of the hydroxyl groups include residues obtained by removing hydroxyl groups from aliphatic monohydric alcohols having 8 to 20 carbon atoms, such as octyl alcohol, 2-ethyl-hexyl alcohol, nonyl alcohol, decyl alcohol, 2-propyl-heptyl alcohol, undecyl alcohol, dodecyl alcohol, 2-butyl-octyl alcohol, tridecyl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, isostearyl alcohol, oleyl alcohol, and eicosyl alcohol; Examples of such an alkylene oxide include residues obtained by removing hydroxyl groups from a product obtained by adding 1 to 20 moles in total of an alkylene oxide having 2 to 3 carbon atoms, i.e., ethylene oxide and propylene oxide, per mole of an aliphatic monohydric alcohol having 8 to 20 carbon atoms, such as cholesteryl, decyl alcohol, 2-propyl-heptyl alcohol, undecyl alcohol, dodecyl alcohol, 2-butyl-octyl alcohol, tridecyl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, isostearyl alcohol, oleyl alcohol, or eicosyl alcohol. Among these, R in general formula (1) 1 R in general formula (2) 2 , R 3 R in general formula (3) 4 , R 5 As the alkyl group, a residue obtained by removing a hydroxyl group from an aliphatic alcohol having 8 to 18 carbon atoms is preferable, a residue obtained by removing a hydroxyl group from an aliphatic alcohol having 12 to 18 carbon atoms is more preferable, and a residue obtained by removing a hydroxyl group from an aliphatic alcohol having 16 to 18 carbon atoms is even more preferable.

[0010] In the P nuclear NMR measurement of the phosphate compound (A) of the present invention, when the sum of the P nuclear NMR integral ratios attributable to the above-mentioned phosphate ester P1, phosphate ester P2, phosphate ester P3 and inorganic phosphate compound P4 is taken as 100%, the P nuclear NMR integral ratio attributable to the phosphate ester P1 is preferably 20 to 80%, more preferably 30 to 70%, and even more preferably 40 to 60%. The P nucleus NMR integral ratio assigned to the phosphate ester P2 is preferably from 10 to 50%, more preferably from 20 to 50%, and further preferably from 30 to 50%. The P nucleus NMR integral ratio assigned to the phosphate ester P3 is preferably 0.5 to 30%, more preferably 0.5 to 25%, and further preferably 0.5 to 20%. The P nucleus NMR integral ratio attributable to the inorganic phosphate compound P4 is preferably 0.5 to 30%, more preferably 0.5 to 25%, and even more preferably 0.5 to 20%.

[0011] The phosphate compound (A) contained in the treating agent for acrylic synthetic fibers of the present invention is a mixture in which, when the total of the P nucleus NMR integral ratios attributable to the phosphate ester P1, the phosphate ester P2, the phosphate ester P3 and the inorganic phosphate compound P4 is taken as 100%, the P nucleus NMR integral ratio attributable to the phosphate ester P1 is 20 to 90%, the P nucleus NMR integral ratio attributable to the phosphate ester P2 is 5 to 60%, the P nucleus NMR integral ratio attributable to the phosphate ester P3 is 0.1 to 40%, and the P nucleus NMR integral ratio attributable to the inorganic phosphate compound P4 is 0.1 to 40%, in P nucleus NMR measurement of the treating agent for acrylic synthetic fibers that has been "pretreated by alkali overneutralization", the P nucleus NMR integral ratio attributable to the phosphate ester P1 is 20 to 90%, the P nucleus NMR integral ratio attributable to the phosphate ester P2 is 5 to 60%, the P nucleus NMR integral ratio attributable to the phosphate ester P3 is 0.1 to 40%, and the P nucleus NMR integral ratio attributable to the inorganic phosphate compound P4 is 0.1 to 40%. The "alkali overneutralization pretreatment" refers to a pretreatment in which an excess amount of alkali (e.g., sodium hydroxide, potassium hydroxide, laurylamine) is added to the treating agent for acrylic synthetic fibers, the treating agent-containing composition for acrylic synthetic fibers, or the first treating agent for acrylic synthetic fibers in this invention. 31In the measurement of P-NMR, by carrying out this "alkaline overneutralization pretreatment", the peaks attributable to the phosphate ester P1, the phosphate ester P2, the phosphate ester P3 and the inorganic phosphate compound P4 can be clearly separated, and the P nucleus integral ratios attributable to each compound can be calculated by the following formulas (a) to (d). 31 In the P-NMR measurements, an alkaline overneutralization treatment was performed by adding an amount of alkali to the acrylic synthetic fiber treatment agent to the extent that the observed peaks were split. The P nucleus NMR integral ratio assigned to the phosphate ester P1 is represented by the following formula (a), the P nucleus NMR integral ratio assigned to the phosphate ester P2 is represented by the following formula (b), the P nucleus NMR integral ratio assigned to the phosphate ester P3 is represented by the following formula (c), and the P nucleus NMR integral ratio assigned to the inorganic phosphate compound P4 is represented by the following formula (d). In formulas (a) to (d), "P-formula 1" represents the P nuclear NMR integral value assigned to the phosphate ester P1 represented by general formula (1), "P-formula 2" represents the P nuclear NMR integral value assigned to the phosphate ester P2 represented by general formula (2), "P-formula 3" represents the P nuclear NMR integral value assigned to the phosphate ester P3 represented by general formula (3), and "P-formula 4" represents the P nuclear NMR integral value assigned to the inorganic phosphate compound P4.

[0012]

number

[0013]

number

[0014]

number

[0015]

number

[0016] <Unsaturated compound (B)> The treating agent for acrylic synthetic fibers of the present invention contains, as an essential component, at least one unsaturated compound (B) selected from fatty acids having 14 to 22 carbon atoms and an unsaturated bond in the molecule, and aliphatic alcohols having 16 to 22 carbon atoms and an unsaturated bond in the molecule. In the unsaturated compound (B) of the present invention, the fatty acid having 14 to 22 carbon atoms and an unsaturated bond in the molecule means a free fatty acid, and does not include a fatty acid salt. The unsaturated compound (B) in the present invention is preferably at least one selected from fatty acids having 16 to 18 carbon atoms and an unsaturated bond in the molecule, and aliphatic alcohols having 16 to 18 carbon atoms and an unsaturated bond in the molecule. In addition, the unsaturated compound (B) in the present invention is preferably an aliphatic alcohol having an unsaturated bond in the molecule. The treating agent for acrylic synthetic fibers of the present invention exhibits the effect of improving the formulation stability of the composition containing the treating agent for acrylic synthetic fibers by using the phosphoric acid compound (A) in combination with the unsaturated compound (B).

[0017] The treating agent for acrylic synthetic fibers of the present invention contains a phosphoric acid compound (A) and an unsaturated compound (B) as essential components, and the mass ratio of the phosphoric acid compound (A) to the unsaturated compound (B) is in the range of phosphoric acid compound (A) / unsaturated compound (B)=1.0 to 26.0. If the mass ratio of the phosphoric acid compound (A) to the unsaturated compound (B) is less than 1.0, the formulation stability of the composition containing the treatment agent for acrylic synthetic fibers is poor. If it is more than 26.0, a uniform web cannot be obtained, and the uniformity of the sliver in the drawing process is deteriorated, making it impossible to impart excellent spinnability to the acrylic synthetic fibers. This spinnability can be evaluated by the "web uniformity," "drawing clogging test," and "drawing scum prevention" in the examples described later. In the present invention, the mass ratio of the phosphoric acid compound (A) to the unsaturated compound (B) is preferably in the range of 2.0 to 26.0, more preferably in the range of 3.0 to 26.0, and even more preferably in the range of 4.0 to 26.0.

[0018] <Solvent (S)> The treating agent for acrylic synthetic fibers of the present invention is used in combination with a solvent (S) having a boiling point of 105° C. or less at atmospheric pressure to form a treating agent-containing composition for acrylic synthetic fibers. In this specification, "atmospheric pressure" means standard atmospheric pressure. The solvent (S) may be any solvent having a boiling point of 105° C. or less at atmospheric pressure, and among these, water is preferred.

[0019] In the treating agent for acrylic synthetic fibers of the present invention, the mass ratio of the total of the phosphoric acid compound (A) and the unsaturated compound (B) to the solvent (S) is in the range of (phosphoric acid compound (A) + unsaturated compound (B)) / solvent (S) = 0.1 to 2.5. By setting the mass ratio of the total of the phosphoric acid compound (A) and the unsaturated compound (B) to the solvent (S) in the range of 0.1 to 2.5, the formulation stability of the composition containing a treatment agent for acrylic synthetic fibers of the present invention can be improved. In the present invention, the mass ratio of the total of the phosphoric acid compound (A) and the unsaturated compound (B) to the solvent (S) is preferably in the range of 0.1 to 2.44, more preferably in the range of 0.1 to 2.38, and even more preferably in the range of 0.1 to 2.32.

[0020] <Oil (C)> The treating agent for acrylic synthetic fibers of the present invention preferably contains at least one oil (C) selected from hydrocarbon compounds, oils and fats, and ester compounds, all of which are liquid at 70°C. The composition containing a treatment agent for acrylic synthetic fibers of the present invention is preferably used in combination with oil (C) since this can improve web uniformity in some cases. Specific examples of hydrocarbon compounds that are liquid at 70° C. include mineral oil, paraffin wax, etc. Specific examples of fats and oils that are liquid at 70° C. include castor oil, coconut oil, sesame oil, palm oil, tall oil, lard, beef tallow, etc. Specific examples of ester compounds that are liquid at 70° C. include butyl stearate, octyl stearate, stearyl stearate, oleyl laurate, isotridecyl stearate, sorbitan monooleate, sorbitan trioleate, lauryl oleate, tridecyl oleate, and sorbitan monostearate.

[0021] The treating agent for acrylic synthetic fibers of the present invention preferably contains 40 to 90 parts by mass of the phosphoric acid compound (A) and the unsaturated compound (B) in total, and 10 to 60 parts by mass of the oil (C), relative to 100 parts by mass of the total of the phosphoric acid compound (A), the unsaturated compound (B), and the oil (C), more preferably contains 50 to 90 parts by mass of the phosphoric acid compound (A) and the unsaturated compound (B) in total, and 10 to 50 parts by mass of the oil (C), and still more preferably contains 60 to 80 parts by mass of the phosphoric acid compound (A) and the unsaturated compound (B) in total, and 20 to 40 parts by mass of the oil (C).

[0022] <Nonionic surfactants (D)> The treating agent for acrylic synthetic fibers of the present invention preferably contains a nonionic surfactant (D), which is at least one selected from polyoxyalkylene alkyl ethers, polyoxyalkylene alkenyl ethers, polyoxyalkylene alkyl esters, polyoxyalkylene alkenyl esters, and polyoxyalkylene alkyl phenyl ethers. A specific example of the polyoxyalkylene alkyl ether is an alkylene oxide adduct of lauryl alcohol or cetyl alcohol, a specific example of the polyoxyalkylene alkenyl ether is an alkylene oxide adduct of oleyl alcohol, a specific example of the polyoxyalkylene alkyl ester is an alkylene oxide adduct of stearic acid, a specific example of the polyoxyalkylene alkenyl ester is an alkylene oxide adduct of oleic acid or castor oil, and a specific example of the polyoxyalkylene alkylphenyl ether is an alkylene oxide adduct of nonylphenol. Also, as a mixture of the polyoxyalkylene alkyl ether and the polyoxyalkylene alkenyl ether, an alkylene oxide adduct of beef tallow alcohol, and as a mixture of the polyoxyalkylene alkyl ester and the polyoxyalkylene alkenyl ester, an alkylene oxide adduct of coconut fatty acid can be preferably used. The composition containing a treating agent for acrylic synthetic fibers of the present invention preferably contains a nonionic surfactant (D), which tends to improve drawing clogging.

[0023] The treating agent for acrylic synthetic fibers of the present invention preferably contains 30 to 90 parts by mass of the phosphoric acid compound (A) and the unsaturated compound (B), 5 to 40 parts by mass of the oil (C), and 5 to 45 parts by mass of the nonionic surfactant (D), relative to 100 parts by mass of the total of the phosphoric acid compound (A), the unsaturated compound (B), the oil (C), and the nonionic surfactant (D); more preferably contains 30 to 75 parts by mass of the phosphoric acid compound (A) and the unsaturated compound (B), 15 to 40 parts by mass of the oil (C), and 10 to 40 parts by mass of the nonionic surfactant (D); and even more preferably contains 30 to 50 parts by mass of the phosphoric acid compound (A) and the unsaturated compound (B), 20 to 35 parts by mass of the oil (C), and 20 to 40 parts by mass of the nonionic surfactant (D).

[0024] The treating agent for acrylic synthetic fibers of the present invention preferably contains a polyether compound (E) which is a polyoxyalkylene glycol having at least one constituent unit selected from an oxyethylene group and an oxypropylene group. However, the polyether compound (E) in the present invention does not include compounds that fall under the above nonionic surfactant (D). The polyether compound (E) in the present invention is preferably an alkylene oxide adduct of ethylene glycol or propylene glycol. The composition containing a treating agent for acrylic synthetic fibers of the present invention is preferably used in combination with a polyether compound (E) since this tends to prevent drawing scum. In the present invention, the polyether compound (E) may be used in combination with the phosphoric acid compound (A), the unsaturated compound (B), the oil (C) and the nonionic surfactant (D), or may be used as a second treatment agent for acrylic synthetic fibers containing the polyether compound (E) as a separate addition. By adding the polyether compound (E) as a separate addition, the mixing ratio of the polyether compound (E) to the mixture of the phosphoric acid compound (A), the unsaturated compound (B), the oil (C) and the nonionic surfactant (D) can be finely adjusted, which is preferable in terms of improving not only the web uniformity but also the drawing, i.e., preventing drawing scum.

[0025] The treating agent for acrylic synthetic fibers of the present invention preferably contains the phosphoric acid compound (A) and the unsaturated compound (B) in a total amount of 10 to 45 parts by mass, the oil (C), the nonionic surfactant (D), and the polyether compound (E) in a total amount of 5 to 30 parts by mass, the oil (C) in a total amount of 5 to 35 parts by mass, and the polyether compound (E) in a total amount of 20 to 80 parts by mass, assuming that the total content of the phosphoric acid compound (A), the unsaturated compound (B), the oil (C), the nonionic surfactant (D), and the polyether compound (E) is 100 parts by mass. It is more preferable that the composition contains the phosphoric acid compound (A) and the unsaturated compound (B) in a total amount of 15 to 45 parts by mass, the oil (C) in a total amount of 5 to 25 parts by mass, the nonionic surfactant (D) in a total amount of 10 to 35 parts by mass, and the polyether compound (E) in a total amount of 20 to 45 parts by mass, the oil (C) in a total amount of 5 to 20 parts by mass, the nonionic surfactant (D) in a total amount of 20 to 35 parts by mass, and the polyether compound (E) in a total amount of 20 to 45 parts by mass.

[0026] In a first aspect of the present invention, a composition containing a treatment agent for acrylic synthetic fibers can be provided, which contains a phosphoric acid compound (A) and an unsaturated compound (B) as essential components, an oil (C), a nonionic surfactant (D), and optionally a polyether compound (E), and a solvent (S). In addition, as a second aspect of the present invention, a first treatment agent-containing composition for acrylic synthetic fibers can be provided, which contains a treatment agent for acrylic synthetic fibers having a phosphoric acid compound (A) and an unsaturated compound (B) as essential components, an oil (C), and optionally a nonionic surfactant (D), and a solvent (S), and is used in combination with a second treatment agent for acrylic synthetic fibers containing a polyether compound (E). Furthermore, as a third aspect of the present invention, a two-component treatment agent set for acrylic synthetic fibers can be provided, which is composed of a treatment agent for acrylic synthetic fibers which contains a phosphoric acid compound (A) and an unsaturated compound (B) as essential components, and which may also contain an oil (C) and a nonionic surfactant (D), a treatment agent-containing composition for acrylic synthetic fibers which contains a solvent (S) as a first treatment agent-containing composition for acrylic synthetic fibers, and a second treatment agent for acrylic synthetic fibers which contains a polyether compound (E).

[0027] As a method for preparing a diluted solution of the treatment agent-containing composition for acrylic synthetic fibers of the present invention, the treatment agent-containing composition for acrylic synthetic fibers, which contains the phosphoric acid compound (A) and the unsaturated compound (B) as essential components, oil (C), a nonionic surfactant (D), and optionally a polyether compound (E), and a solvent (S), in the first embodiment above, can be added to water to prepare a diluted solution having a nonvolatile content of 0.01% by mass or more and 20% by mass or less. The non-volatile content in the present invention means a value determined from the mass of an absolutely dry matter obtained by heat-treating a subject at 105° C. until it reaches a constant weight and then thoroughly removing volatile substances. In the second embodiment, a first treatment agent-containing composition for acrylic synthetic fibers, which contains the phosphoric acid compound (A) and the unsaturated compound (B) as essential components, and which may further contain an oil (C) and a nonionic surfactant (D), and which contains a solvent (S), and a second treatment agent for acrylic synthetic fibers, which contains a polyether compound (E), can be added to water to prepare a diluted solution having a nonvolatile content of 0.01% by mass or more and 20% by mass or less. Furthermore, in the third embodiment, a two-component treatment agent set for acrylic synthetic fibers, which is composed of a first treatment agent-containing composition for acrylic synthetic fibers, which is a treatment agent for acrylic synthetic fibers that contains the phosphoric acid compound (A) and the unsaturated compound (B) as essential components, and which may further contain oil (C) and a nonionic surfactant (D), and a treatment agent-containing composition for acrylic synthetic fibers that contains a solvent (S), and a second treatment agent for acrylic synthetic fibers that contains a polyether compound (E), can be added to water to prepare a diluted solution having a nonvolatile content of 0.01% by mass or more and 20% by mass or less.

[0028] <Other ingredients> In the present invention, other components may be used in combination within the range that does not impair the effects of the present invention. Other components that can be used in combination include amide compounds such as lauric acid amide and diethylenetriamine monolauric acid amide, anionic surfactants such as alkylsulfonate salts and dialkylsulfosuccinate salts, as well as preservatives and antioxidants for maintaining quality.

[0029] <Acrylic synthetic fiber> The process of applying the diluted solution of the composition containing a treatment agent for acrylic synthetic fibers of the present invention to acrylic synthetic fibers includes a spinning process, a drawing process, and each process after drawing. It is preferable to apply the composition to a fiber bundle in a gel-swollen state after wet spinning, drawing, and washing with water. The application method may be any of a dipping method, a spraying method, a roller oiling method, a guide oiling method, etc., but the dipping method or the spraying method is preferable. When applying the composition containing a treatment agent for acrylic synthetic fibers to a fiber bundle in a gel-swollen state, the composition containing a treatment agent for acrylic synthetic fibers is usually applied, followed by heat treatment for drying and densification. The heat treatment at this time is preferably performed under conditions of a temperature of 120°C to 180°C for 1 minute to 7 minutes. The acrylic synthetic fibers to which the composition containing a treatment agent for acrylic synthetic fibers of the present invention is applied may be usually heat treated again after drying and densification. The temperature of the heat treatment at this time is 180°C or less in the case of dry heat and 130°C or less in the case of wet heat. The amount of the composition containing a treatment agent for acrylic synthetic fibers of the present invention applied is preferably from 0.02% by mass to 1.5% by mass, more preferably from 0.05% by mass to 1% by mass, in terms of the non-volatile content of the composition containing a treatment agent for acrylic synthetic fibers, relative to the acrylic synthetic fibers. The acrylic synthetic fibers to which the composition containing a treatment agent for acrylic synthetic fibers is applied are not particularly limited, but in the present invention, examples include: (1) acrylic fibers obtained by copolymerizing 40 mass% or more of acrylonitrile with 60 mass% or less of a non-halogen-based vinyl monomer such as (meth)acrylic acid, alkyl (meth)acrylate, (meth)allyl sulfonate, styrene sulfonate, vinyl sulfonate, etc.; (2) modacrylic fibers obtained by copolymerizing a halogen-containing vinyl monomer such as vinyl chloride or vinylidene chloride with acrylonitrile; and (3) modacrylic fibers to which a halogen-based compound, etc. has been added. EXAMPLES

[0030] The present invention will be described below with reference to examples, but the technical scope of the present invention is not limited thereto. In the following examples and comparative examples, parts means parts by mass, and % means % by mass.

[0031] <Treatment agent for acrylic synthetic fibers> Acrylic synthetic fiber treatment agents W-1 to W-27, which are specific examples of the present invention, are shown in Table 1 below, and acrylic synthetic fiber treatment agents w-1 to w-11, which are not specific examples of the present invention, are shown in Table 2 below. Based on the respective compositions, each component was thoroughly mixed and homogenized to prepare each treatment agent for acrylic synthetic fiber.

[0032] [Table 1]

[0033] [Table 2]

[0034] Details of the phosphoric acid compound (A) shown in Tables 1 and 2 are summarized in Table 3 below. [Table 3]

[0035] Details of each component other than the phosphoric acid compound (A) shown in Tables 1 and 2 are as follows. <Unsaturated compound (B)> B-1: Palmitoleic alcohol B-2: Oleyl alcohol B-3: Linoleyl alcohol B-4: Erucyl alcohol B-5: Myristoleic acid B-6: Oleic acid B-7: Erucic acid B-8: Linoleic acid B-9: Linolenic acid b-10: Potassium oleate

[0036] <Oil (C)> C-1: Kinematic viscosity at 20℃ is about 10mm 2 / s mineral oil C-2: Kinematic viscosity at 40℃ is about 20mm 2 / s mineral oil C-3: Kinematic viscosity at 40℃ is about 90mm 2 / s mineral oil C-4: Castor oil C-5: Coconut oil C-6: Palm oil C-7: Sorbitan monostearate C-8: Ester compound of C12-13 branched alcohol and oleic acid C-9: Stearyl stearate C-10: Paraffin wax (melting point 55°C)

[0037] <Nonionic surfactants (D)> D-1: A compound in which 5 moles of ethylene oxide are added to 1 mole of lauryl alcohol D-2: A compound in which 6 moles of propylene oxide are added to 1 mole of lauryl alcohol D-3: A compound in which 10 moles of ethylene oxide are added to 1 mole of lauryl alcohol D-4: A compound in which 23 moles of ethylene oxide are added to 1 mole of cetyl alcohol D-5: A compound in which 5 moles of ethylene oxide are added to 1 mole of oleyl alcohol D-6: A compound in which 10 moles of ethylene oxide are added to 1 mole of oleyl alcohol D-7: A compound in which 2 moles of ethylene oxide are added to 1 mole of beef tallow alcohol D-8: A compound in which 8 moles of ethylene oxide are added to 1 mole of beef tallow alcohol D-9: A compound in which 5 moles of ethylene oxide are added to 1 mole of stearic acid D-10: A compound in which 8 moles of ethylene oxide are added to 1 mole of stearic acid D-11: A compound in which 3 moles of ethylene oxide are added to 1 mole of oleic acid D-12: A compound in which 10 moles of ethylene oxide are added to 1 mole of coconut fatty acid D-13: A compound in which 12 moles of ethylene oxide are added to 1 mole of coconut fatty acid D-14: A compound obtained by adding 12 moles of ethylene oxide to 1 mole of castor oil. D-15: A compound made by mixing 10 moles of ethylene oxide with 1 mole of nonylphenol

[0038] <Polyether Compound (E)> E-1: A compound obtained by adding 80 moles of ethylene oxide to 1 mole of ethylene glycol, and then adding 20 moles of propylene oxide to the compound. E-2: A compound in which 80 moles of ethylene oxide and 20 moles of propylene oxide are randomly added to 1 mole of ethylene glycol. E-3: A compound in which 80 moles of ethylene oxide and 20 moles of propylene oxide are randomly added to 1 mole of propylene glycol. E-4: A compound obtained by adding 20 moles of propylene oxide to 1 mole of propylene glycol, and then adding 80 moles of ethylene oxide. E-5: A compound in which 30 moles of ethylene oxide and 20 moles of propylene oxide are randomly added to 1 mole of ethylene glycol. E-6: A compound in which 80 moles of ethylene oxide and 70 moles of propylene oxide are randomly added to 1 mole of propylene glycol.

[0039] <Others (F)> F-1: Lauric acid amide F-2: Monolauric acid amide of diethylenetriamine F-3: Dilauric acid amide of diethylenetriamine F-4: Lauric acid amide of diethanolamine

[0040] <Composition containing a treatment agent for acrylic synthetic fibers> Using the acrylic synthetic fiber treatment agents W-1 to W-27 and w-1 to w-11 shown in Tables 1 and 2, and water as the solvent (S), the components were thoroughly mixed and homogenized based on the compositions shown in Tables 4 and 5 below to prepare compositions containing a treatment agent for acrylic synthetic fibers of Examples 1 to 27 and Comparative Examples 1 to 17.

[0041] <Evaluation method and criteria> (1) Evaluation of formulation stability After preparing the compositions containing a treating agent for acrylic synthetic fibers of Examples 1 to 27 and Comparative Examples 1 to 17, each composition was left to stand at 50° C. for 24 hours, and then the appearance was visually evaluated according to the following criteria. [Evaluation Criteria] ◎ (Good): No moisture or separation is observed and the product is in a uniform state. ◯ (Acceptable): There is some moisture or separation, but it is not enough to cause any problems as a product. × (unacceptable): Separation is severe and is problematic for the product. The term "moisture" refers to a state in which the transparency (light transmittance) of the evaluation object is reduced and the object is cloudy.

[0042] (2) Web uniformity evaluation Fineness 1.3×10 -4 The composition containing a treatment agent for acrylic synthetic fibers was spray-applied to an acrylic synthetic fiber having a fiber length of 38 mm and a mass of 1.2 g / m (1.2 denier) so that the amount of the composition containing a treatment agent for acrylic synthetic fibers adhered (excluding the solvent (S)) was 0.3 mass%, and the fiber was dried for 2 hours in a hot air dryer at 80° C. Thereafter, the fiber was conditioned overnight in an atmosphere of 25° C. and 40% RH to obtain a treated acrylic synthetic fiber to which the non-volatile content of the composition containing a treatment agent for acrylic synthetic fibers adhered. 10 kg of the obtained acrylic synthetic fiber was used and subjected to a flat card (manufactured by Howa Kogyo Co., Ltd.) in an atmosphere of 30°C x 70% RH, and passed under the condition of a spinning speed of 140 m / min. The uniformity of the spun carded web was evaluated according to the following criteria. [Evaluation Criteria] ◎ (Good): No spots at all, excellent uniformity. ○ (Fair): Slight spots are observed, but this does not pose a problem for the product. × (Fail): Spots are visible and there is a problem with the product. In addition, when the composition containing a treatment agent for acrylic synthetic fibers is applied to an acrylic synthetic fiber that is rated as "A" or "B" according to the above evaluation criteria, it means that the smoothness is good.

[0043] (3) Draw-line clogging test and evaluation of draw-line scum prevention 10 kg of treated acrylic synthetic fibers to which the non-volatile content of the composition containing a treatment agent for acrylic synthetic fibers described in the above "(2) Evaluation method for web uniformity" was attached was used and subjected to a flat card (manufactured by Howa Kogyo Co., Ltd.) to obtain a carded sliver. The obtained carded sliver was subjected to a PDF-type drawing frame (manufactured by Ishikawa Seisakusho Co., Ltd.) in an atmosphere of 30°C x 70% RH, and passed through the frame five times repeatedly under the condition of a spinning speed of 250 m / min. The drawing clogging test was evaluated by counting the number of cloggings in the trumpet of the PDF type drawing frame and evaluating it according to the following criteria. The evaluation of the drawing scum prevention was carried out by visually observing the degree of scum in each of the rubber roller / reducer / trumpet parts and evaluating it according to the following criteria. [Evaluation criteria for the draw clogging test] ◎(Good): 0~2 times 〇(possible): 3~4 times × (Not allowed): 5 times or more [Evaluation criteria for preventing scum from drawing] ◎ (Good): Almost no scum is observed. ◯ (Fair): A small amount of scum is observed, but it is not a problem. × (Not acceptable): A large amount of scum is found and is problematic. It should be noted that a composition containing a treatment agent for acrylic synthetic fibers adhered to acrylic synthetic fibers that have been evaluated as "◎" or "◯" in the evaluation criteria for the draw-stripping clogging test means that the composition has good bundling properties, and a composition containing a treatment agent for acrylic synthetic fibers adhered to acrylic synthetic fibers that have been evaluated as "◎" or "◯" in the evaluation criteria for the draw-stripping scum prevention properties means that the composition has good shedding properties.

[0044] The compositions of the acrylic synthetic fiber treatment agent-containing compositions of Examples 1 to 27 and Comparative Examples 1 to 17, as well as the evaluation results of formulation stability, web uniformity, drawing clogging test, and drawing scum prevention, are summarized in Tables 4 and 5 below. [Table 4]

[0045] [Table 5]

[0046] As shown in Tables 4 and 5, the compositions containing a treatment agent for acrylic synthetic fibers of Examples 1 to 27, which are specific examples of the present invention, have excellent formulation stability when stored for long periods of time and excellent spinnability in the spinning process for obtaining spun yarn from acrylic synthetic fibers. As a result, not only can a uniform web be obtained when carding, but several card slivers can be combined to improve the uniformity of the re-drawn sliver. In addition, the compositions containing a treatment agent for acrylic synthetic fibers of Examples 1 to 27, which are specific examples of the present invention, have a low frequency of drawing clogging, can maintain the thickness of the sliver uniform, and further, since drawing scum is not observed or is only to an extent that it is not problematic, the uniformity can be improved without disturbing the sliver. On the other hand, Comparative Examples 1 to 3, 14 to 15, which do not contain a solvent (S) or are outside the range of "(phosphate compound (A) + unsaturated compound (B)) / solvent (S) = 0.1 to 2.5", Comparative Example 4 and 5, which contain a phosphate compound different from the phosphate compound (A) of the present invention, Comparative Examples 6 to 8 and 11, which do not contain the unsaturated compound (B) of the present invention or contain an unsaturated compound different from the unsaturated compound (B) of the present invention, and Comparative Examples 9, 10, 12, 13, 16 and 17, which are outside the range of "phosphate compound (A) / unsaturated compound (B) = 1.0 to 26.0", were confirmed to be inferior in web uniformity, drawing clogging test and drawing scum prevention properties, and many of them also had poor formulation stability.

[0047] Specific examples of the second embodiment of the present invention, which uses in combination a treatment agent for acrylic synthetic fibers that contains a phosphoric acid compound (A) and an unsaturated compound (B) as essential components and that may contain oil (C) and a nonionic surfactant (D), a first treatment-agent-containing composition for acrylic synthetic fibers that contains a solvent (S), and a second treatment agent for acrylic synthetic fibers that contains a polyether compound (E), are shown below. Alternatively, the third embodiment, which uses a two-component treatment agent set for acrylic synthetic fibers that includes a treatment agent for acrylic synthetic fibers that contains a phosphoric acid compound (A) and an unsaturated compound (B) as essential components and that may contain oil (C) and a nonionic surfactant (D), a treatment-agent-containing composition for acrylic synthetic fibers that contains a solvent (S) as the first treatment-agent-containing composition for acrylic synthetic fibers, and a second treatment agent for acrylic synthetic fibers that contains a polyether compound (E), are shown below. The compositions of acrylic synthetic fiber treatment agents X-1 to X-9 and X-11 to X-14, which contain a phosphoric acid compound (A) and an unsaturated compound (B) as essential components and may also contain an oil (C) and a nonionic surfactant (D), are shown in the following Table 6. Details of components (A) to (D) and (F) are the same as those in Tables 1 and 2 above. Acrylic synthetic fiber treatment agents X-1 to X-9 and X-11 to X-14 in Table 6 below have the same composition as acrylic synthetic fiber treatment agents W-1 to W-9 and W-11 to W-14 in Table 1, except for the removal of the polyether compound (E). Also, acrylic synthetic fiber treatment agent X-4 in Table 6 below has the same composition as acrylic synthetic fiber treatment agents W-4 and W-10 in Table 1, except for the removal of the polyether compound (E), so acrylic synthetic fiber treatment agent X-10 was excluded from Table 6 below.

[0048] [Table 6]

[0049] The compositions Y-1 to Y-9 and Y-11 to Y-14 containing the treatment agent for acrylic synthetic fibers shown in Table 6 and water as the solvent (S) are shown in Table 7 below. In addition, the above-mentioned "Evaluation of Formulation Stability" was carried out on the obtained first treatment agent-containing composition for acrylic synthetic fibers, and the evaluation results based on the same evaluation criteria are also shown in Table 7. As shown in Table 7, it was confirmed that the formulation stability of the first treatment agent-containing compositions for acrylic synthetic fibers Y-1 to Y-9 and Y-11 to Y-14 was good.

[0050] [Table 7]

[0051] Second treating agents Z-1 to Z-6 for acrylic synthetic fibers containing a polyether compound (E) are shown in the following Table 8. Details of the polyether compound (E) are the same as those in Tables 1 and 2 above.

[0052] [Table 8]

[0053] The following Table 9 shows the compositions of Examples 28 to 41 each consisting of the first treatment agent-containing compositions for acrylic synthetic fibers Y-1 to Y-9, Y-11 to Y-14 shown in Table 7 and the second treatment agents for acrylic synthetic fibers Z-1 to Z-6 shown in Table 8, in which the first treatment agent-containing compositions for acrylic synthetic fibers of Examples 28 to 41 are used in combination with the second treatment agent for acrylic synthetic fibers containing a polyether compound (E), or the compositions of the two-component treatment agent sets for acrylic synthetic fibers. In addition, for the two-component treatment agent sets for acrylic synthetic fibers of Examples 28 to 41, the above-mentioned "evaluation of web uniformity" and "evaluation of drawing clogging test and drawing scum prevention" were carried out, and the evaluation results based on the same evaluation criteria are also shown in Table 9.

[0054] [Table 9]

[0055] As shown in Table 9, the second / third embodiment of the present invention, which is the combination of the first treatment agent-containing composition for acrylic synthetic fibers of Examples 28 to 41 and the second treatment agent for acrylic synthetic fibers containing a polyether compound (E), or the two-component treatment agent set for acrylic synthetic fibers, has excellent formulation stability when stored for a long period of time and is excellent in spinnability in the spinning process for obtaining spun yarn from acrylic synthetic fibers, and therefore can obtain a uniform web when carded, and can also improve the uniformity of the re-drawn sliver by combining several card slivers. In addition, in the embodiment in which the first treatment agent-containing composition for acrylic synthetic fibers of Examples 28 to 41 is used in combination with the second treatment agent for acrylic synthetic fibers containing a polyether compound (E), or the two-component treatment agent set for acrylic synthetic fibers, the number of drawing cloggings is reduced, the thickness of the sliver can be kept uniform, and further, since no drawing scum is observed, the uniformity of the sliver can be improved without disturbing the sliver.

Claims

1. A composition containing a treatment agent for acrylic synthetic fibers, which contains a treatment agent for acrylic synthetic fibers containing a phosphoric acid compound (A) and an unsaturated compound (B) described below, and a solvent (S) described below, wherein a mass ratio of the total of the phosphoric acid compound (A) and the unsaturated compound (B) to the solvent (S) is (phosphoric acid compound (A) + unsaturated compound (B)) / solvent (S) = 0.1 to 2.5, and a mass ratio of the phosphoric acid compound (A) and the unsaturated compound (B) is phosphoric acid compound (A) / unsaturated compound (B) = 1.0 to 26.0, and the phosphoric acid compound (A) is a phosphoric acid ester P1 represented by the following formula (1), a phosphoric acid ester P2 represented by the following formula (2), a phosphoric acid ester P3 represented by the following formula (3), 3) and an inorganic phosphate compound P4, wherein, when the sum of the P-nucleus NMR integral ratios attributable to the phosphate ester P1, the phosphate ester P2, the phosphate ester P3 and the inorganic phosphate compound P4 is taken as 100%, the P-nucleus NMR integral ratio attributable to the phosphate ester P1 is 20 to 90%, the P-nucleus NMR integral ratio attributable to the phosphate ester P2 is 5 to 60%, the P-nucleus NMR integral ratio attributable to the phosphate ester P3 is 0.1 to 40%, and the P-nucleus NMR integral ratio attributable to the inorganic phosphate compound P4 is 0.1 to 40%. Unsaturated compound (B): at least one selected from fatty acids having 14 to 22 carbon atoms and an unsaturated bond in the molecule, and aliphatic alcohols having 16 to 22 carbon atoms and an unsaturated bond in the molecule. Solvent (S): A solvent having a boiling point of 105° C. or lower at atmospheric pressure. 【Chemistry 1】 (In formula (1), R １ A residue obtained by removing a hydroxyl group from an aliphatic monohydric alcohol having 8 to 20 carbon atoms, or a residue obtained by removing a hydroxyl group from a product obtained by adding 1 to 20 moles of alkylene oxide having 2 to 3 carbon atoms per mole of aliphatic monohydric alcohol having 8 to 20 carbon atoms. M １ : A hydrogen atom or an alkali metal. M ２ : Hydrogen atom or alkali metal. 【Chemistry 2】 (In formula (2), R ２ A residue obtained by removing a hydroxyl group from an aliphatic monohydric alcohol having 8 to 20 carbon atoms, or a residue obtained by removing a hydroxyl group from a product obtained by adding 1 to 20 moles of alkylene oxide having 2 to 3 carbon atoms per mole of aliphatic monohydric alcohol having 8 to 20 carbon atoms. R ３ A residue obtained by removing a hydroxyl group from an aliphatic monohydric alcohol having 8 to 20 carbon atoms, or a residue obtained by removing a hydroxyl group from a product obtained by adding 1 to 20 moles of alkylene oxide having 2 to 3 carbon atoms per mole of aliphatic monohydric alcohol having 8 to 20 carbon atoms. M ３ : Hydrogen atom or alkali metal. 【Chemistry 3】 (In formula (3), R ４ A residue obtained by removing a hydroxyl group from an aliphatic monohydric alcohol having 8 to 20 carbon atoms, or a residue obtained by removing a hydroxyl group from a product obtained by adding 1 to 20 moles of alkylene oxide having 2 to 3 carbon atoms per mole of aliphatic monohydric alcohol having 8 to 20 carbon atoms. R ５ A residue obtained by removing a hydroxyl group from an aliphatic monohydric alcohol having 8 to 20 carbon atoms, or a residue obtained by removing a hydroxyl group from a product obtained by adding 1 to 20 moles of alkylene oxide having 2 to 3 carbon atoms per mole of aliphatic monohydric alcohol having 8 to 20 carbon atoms. M ４ : A hydrogen atom or an alkali metal. M ５ : Hydrogen atom or alkali metal.

2. 2. The composition according to claim 1, wherein the solvent (S) is water.

3. 2. The composition containing a treatment agent for acrylic synthetic fibers according to claim 1, wherein the treatment agent for acrylic synthetic fibers further contains the following oil (C): Oil (C): At least one selected from the group consisting of hydrocarbon compounds, oils and fats, and esters, all of which are liquid at 70°C.

4. When the total content of the phosphoric acid compound (A), the unsaturated compound (B), and the oil (C) is 100 parts by mass, The composition containing a treatment agent for acrylic synthetic fibers according to claim 3, comprising 40 to 90 parts by mass of the phosphoric acid compound (A) and the unsaturated compound (B) in total, and 10 to 60 parts by mass of the oil (C).

5. 4. The composition containing a treating agent for acrylic synthetic fibers according to claim 3, wherein the treating agent for acrylic synthetic fibers further contains the following nonionic surfactant (D): Nonionic surfactant (D): At least one selected from polyoxyalkylene alkyl ethers, polyoxyalkylene alkenyl ethers, polyoxyalkylene alkyl esters, polyoxyalkylene alkenyl esters, and polyoxyalkylene alkyl phenyl ethers.

6. When the total content of the phosphoric acid compound (A), the unsaturated compound (B), the oil (C), and the nonionic surfactant (D) is 100 parts by mass, 6. The composition containing a treatment agent for acrylic synthetic fibers according to claim 5, comprising 30 to 90 parts by mass of the phosphoric acid compound (A) and the unsaturated compound (B) in total, 5 to 40 parts by mass of the oil (C), and 5 to 45 parts by mass of the nonionic surfactant (D).

7. 6. The composition containing a treating agent for acrylic synthetic fibers according to claim 5, wherein the treating agent for acrylic synthetic fibers further contains the following polyether compound (E): Polyether compound (E): A polyoxyalkylene glycol having at least one constituent unit selected from an oxyethylene group and an oxypropylene group.

8. When the total content of the phosphoric acid compound (A), the unsaturated compound (B), the oil (C), the nonionic surfactant (D), and the polyether compound (E) is 100 parts by mass, 8. The composition containing a treatment agent for acrylic synthetic fibers according to claim 7, comprising 10 to 45 parts by mass of the phosphoric acid compound (A) and the unsaturated compound (B) in total, 5 to 30 parts by mass of the oil (C), 5 to 35 parts by mass of the nonionic surfactant (D), and 20 to 80 parts by mass of the polyether compound (E).

9. The composition containing a first treatment agent for acrylic synthetic fibers according to any one of claims 1 to 6, characterized in that the composition contains a second treatment agent for acrylic synthetic fibers, which contains the following polyether compound (E): Polyether compound (E): A polyoxyalkylene glycol having at least one constituent unit selected from an oxyethylene group and an oxypropylene group.

10. As a first treatment agent-containing composition for acrylic synthetic fibers, a treatment agent-containing composition for acrylic synthetic fibers according to any one of claims 1 to 6, The second treatment agent for acrylic synthetic fibers contains the following polyether compound (E): A two-component treatment set for acrylic synthetic fibers. Polyether compound (E): A polyoxyalkylene glycol having at least one constituent unit selected from an oxyethylene group and an oxypropylene group.

11. A method for preparing a diluted solution of a composition containing a treatment agent for acrylic synthetic fibers, comprising adding the composition containing a treatment agent for acrylic synthetic fibers according to any one of claims 1 to 8 to water, and adjusting the non-volatile content concentration to 0.01% by mass or more and 20% by mass or less.

12. A method for preparing a dilution of the two-component treatment set for acrylic synthetic fibers, comprising adding the two-component treatment set for acrylic synthetic fibers according to claim 10 to water to adjust the non-volatile content concentration to 0.01% by mass or more and 20% by mass or less.

13. An acrylic synthetic fiber having adhered thereto the non-volatile matter of the composition containing a treatment agent for acrylic synthetic fiber according to any one of claims 1 to 8.

Images