Water repellent composition, method for producing water repellent composition, and textile product

Abstract

To provide a water-repellent agent composition which is excellent in water repellency, a method for producing the water-repellent agent composition, and a fiber product which is a water-repellent treated product by the water-repellent agent composition.SOLUTION: A water-repellent agent composition contains a polyurethane resin compound, a non-fluorine water-repellent compound, a surface active agent, and a liquid medium. The polyurethane resin compound contains at least one selected from the group consisting of a first polyurethane resin compound, a second polyurethane resin compound, and a third polyurethane resin compound.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a water repellent composition, a method for producing a water repellent composition, and a textile product, and more particularly to a water repellent composition, a method for producing the water repellent composition, and a textile product that has been treated with the water repellent composition. [Background technology]

[0002] Fluorine-based water repellents containing fluorine compounds have been known as water repellents, and when applied to substrates such as textiles, they exhibit good water repellency.

[0003] On the other hand, in recent years, in consideration of the environmental impact of fluorine, there has been an increasing demand for non-fluorine-based water repellents that do not contain fluorine compounds.

[0004] As such a non-fluorine-based water repellent, for example, a surface treatment agent containing a non-fluorine-containing polymer, a surfactant, and a liquid medium has been proposed (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Special Publication No. 2015-120894 Summary of the Invention [Problem to be solved by the invention]

[0006] In recent years, there has been a demand for further improvement in water repellency of non-fluorinated water repellents.

[0007] The present invention provides a water repellent composition having excellent water repellency, a method for producing the water repellent composition, and a textile product that has been treated with the water repellent composition. [Means for solving the problem]

[0008] The present invention [1] is a water repellent composition comprising a polyurethane resin compound, a non-fluorine-containing water repellent compound, a surfactant, and a liquid medium, wherein the polyurethane resin compound comprises at least one selected from the group consisting of the following (A) first polyurethane resin compound, the following (B) second polyurethane resin compound, and the following (C) third polyurethane resin compound: (A) A first polyurethane resin compound which is a reaction product of a first aliphatic polyisocyanate derivative having an average number of isocyanate groups of two or more, a first long-chain active hydrogen compound having both a hydrocarbon group and an active hydrogen group and having from 12 to 30 carbon atoms, a cationic active hydrogen compound having both an active hydrogen group and a cationic group, and an acid compound which forms a salt with the cationic group, wherein the concentration of the hydrocarbon group is from 30% to 85%. (B) A second polyurethane resin compound containing a reaction product of an isocyanate compound and at least one selected from the group consisting of alkyl sorbitan having an alkyl group with 12 to 30 carbon atoms, alkyl citrate having an alkyl group with 12 to 30 carbon atoms, and pentaerythritol ester having an alkyl group with 12 to 30 carbon atoms. (C) A third polyurethane resin compound comprising a reaction product of a second aliphatic polyisocyanate derivative having an average number of isocyanate groups of 2 or more and a second long-chain active hydrogen compound having both a hydrocarbon group and an active hydrogen group having 12 to 30 carbon atoms.

[0009] The present invention [2] includes the water repellent composition according to the above [1], in which the blending ratio of the non-fluorinated water repellent compound is 0.1 parts by mass or more and 99 parts by mass or less relative to 100 parts by mass of the total amount of the polyurethane resin compound and the non-fluorinated water repellent compound.

[0010] The present invention [3] includes the water repellent composition according to the above [1] or [2], wherein the non-fluorinated water repellent compound is a polymer containing a structural unit derived from a long-chain aliphatic hydrocarbon group-containing (meth)acrylate represented by the following formula (1) and / or an amide group-containing monomer represented by the following formula (2):

[0011] [ka]

[0012] (In the above formula (1), R 1 represents a hydrogen atom or a methyl group, and R 2 represents a linear or branched long-chain aliphatic hydrocarbon group having 18 to 30 carbon atoms.

[0013] [ka]

[0014] (In the above formula (2), R 3 represents an organic residue having an ethylenically unsaturated double bond group, and R 4 represents a monovalent hydrocarbon group having 7 to 30 carbon atoms, and R 5 represents a divalent hydrocarbon group having 1 to 5 carbon atoms. The present invention [4] includes the water repellent composition according to the above [3], in which the non-fluorinated water repellent compound is a polymer containing a structural unit derived from a reactive emulsifier.

[0015] The present invention [5] includes the water repellent composition according to the above [4], wherein the reactive emulsifier is represented by the following formula (3):

[0016] [ka]

[0017] (In the above formula (3), R 10 represents an organic residue having an ethylenically unsaturated double bond group having 12 to 20 carbon atoms, and R 11 represents an oxyalkylene group having 2 to 10 carbon atoms.

[0018] The present invention [6] includes the water repellent composition according to the above [1] or [2], in which the non-fluorine-containing water repellent compound is a dendrimer-based water repellent.

[0019] The present invention [7] includes the water repellent composition according to any one of the above [1] to [6], which contains at least one selected from the group consisting of a blocked isocyanate compound, a silicone polymer, and a wax.

[0020] The present invention [8] includes the water repellent composition according to any one of the above [1] to [7], in which the first aliphatic polyisocyanate derivative includes an isocyanurate derivative of an aliphatic polyisocyanate.

[0021] The present invention [9] includes the water repellent composition according to any one of the above [1] to [8], wherein in the cationic active hydrogen compound of the first polyurethane resin compound, the cationic group is a tertiary amino group, the active hydrogen group is a hydroxyl group, and the cationic active hydrogen compound has two or more hydroxyl groups per molecule.

[0022] The present invention

[10] is a method for producing the water repellent composition described in [3] above, which comprises polymerizing the monomer components in the presence of the polyurethane resin compound, the surfactant, and the liquid medium to produce the non-fluorinated water repellent compound.

[0023] The present invention

[11] includes a textile product that has been treated with the water repellent composition according to any one of the above [1] to [8]. [Effects of the Invention]

[0024] The water repellent composition of the present invention comprises a polyurethane resin compound including at least one selected from the group consisting of a first polyurethane resin compound, a second polyurethane resin compound, and a third polyurethane resin compound, and a non-fluorine-containing water repellent compound.

[0025] Therefore, the water repellency of the water-repellent treated object can be improved by treating it with this water repellent composition.

[0026] In the method for producing the water repellent composition of the present invention, a non-fluorine-containing water repellent compound is produced by polymerizing a monomer component in the presence of a polyurethane resin compound, a surfactant, and a liquid medium.

[0027] Therefore, a water repellent composition having excellent water repellency can be produced.

[0028] The textile product of the present invention is a product that has been treated with the water repellent composition of the present invention.

[0029] Therefore, this textile product has excellent water repellency. DETAILED DESCRIPTION OF THE INVENTION

[0030] The water repellent composition of the present invention comprises a polyurethane resin compound, a non-fluorine-containing water repellent compound, a surfactant, and a liquid medium.

[0031] Each component will be described in detail below. 1. Polyurethane resin compound The polyurethane resin compound includes at least one selected from the group consisting of a first polyurethane resin compound, a second polyurethane resin compound, and a third polyurethane resin compound. 1-1. First polyurethane resin compound The first polyurethane resin compound is a reaction product of a first aliphatic polyisocyanate derivative, a first long-chain active hydrogen compound, a cationic active hydrogen compound, and an acid compound.

[0032] The first aliphatic polyisocyanate derivative is a derivative of an aliphatic polyisocyanate.

[0033] Examples of aliphatic polyisocyanates include aliphatic diisocyanates such as hexamethylene diisocyanate (hexane diisocyanate) (HDI), pentamethylene diisocyanate (pentane diisocyanate) (PDI), tetramethylene diisocyanate, trimethylene diisocyanate, 1,2-, 2,3-, or 1,3-butylene diisocyanate, and 2,4,4- or 2,2,4-trimethylhexamethylene diisocyanate.

[0034] Aliphatic polyisocyanates also include alicyclic polyisocyanates.

[0035] Examples of alicyclic polyisocyanates include 3-isocyanatomethyl-3,5,5-trimethylcyclohexyl isocyanate (isophorone diisocyanate, IPDI), 4,4'-, 2,4'-, or 2,2'-methylenebis(cyclohexyl isocyanate), or mixtures thereof (H 12 Examples of the diisocyanate include alicyclic diisocyanates such as 1,3- or 1,4-bis(isocyanatomethyl)cyclohexane or a mixture thereof (H6XDI), bis(isocyanatomethyl)norbornane (NBDI), 1,3-cyclopentene diisocyanate, 1,4-cyclohexane diisocyanate, 1,3-cyclohexane diisocyanate, methyl-2,4-cyclohexane diisocyanate, and methyl-2,6-cyclohexane diisocyanate.

[0036] As the aliphatic polyisocyanate, preferably, hexamethylene diisocyanate and 1,3-bis(isocyanatomethyl)cyclohexane (hereinafter simply referred to as bis(isocyanatomethyl)cyclohexane) are used, and more preferably, hexamethylene diisocyanate is used.

[0037] Examples of the first aliphatic polyisocyanate derivative include polymers of the above-mentioned aliphatic polyisocyanates (for example, dimers, trimers (for example, isocyanurate derivatives, iminooxadiazinedione derivatives), pentamers, heptamers, etc.), allophanate derivatives (for example, allophanate derivatives produced by reacting the above-mentioned aliphatic polyisocyanates with monohydric alcohols or dihydric alcohols), polyol derivatives (for example, polyol derivatives (alcohol adducts, preferably trimethylolpropane) produced by reacting the above-mentioned aliphatic polyisocyanates with trihydric alcohols (for example, trimethylolpropane, etc.)), and and propane adducts), biuret derivatives (for example, biuret derivatives produced by the reaction of the above-mentioned aliphatic polyisocyanates with water or amines), urea derivatives (for example, urea derivatives produced by the reaction of the above-mentioned aliphatic polyisocyanates with diamines), oxadiazinetrione derivatives (for example, oxadiazinetrione produced by the reaction of the above-mentioned aliphatic polyisocyanates with carbon dioxide), carbodiimide derivatives (for example, carbodiimide derivatives produced by the decarboxylation condensation reaction of the above-mentioned aliphatic polyisocyanates), uretdione derivatives, and uretonimine derivatives.

[0038] As the first aliphatic polyisocyanate derivative, preferably, an isocyanurate derivative is used.

[0039] When the first aliphatic polyisocyanate derivative contains an isocyanurate derivative, the texture becomes good.

[0040] As the first aliphatic polyisocyanate derivative, an isocyanurate derivative of hexamethylene diisocyanate is more preferably used.

[0041] The first aliphatic polyisocyanate derivatives can be used alone or in combination of two or more kinds.

[0042] The first aliphatic polyisocyanate derivative can be produced by a known method.

[0043] The average number of isocyanate groups in the first aliphatic polyisocyanate derivative is 2 or more, preferably 2.5, more preferably 2.9, and for example, 3.8 or less.

[0044] When the average number of isocyanate groups is equal to or greater than the lower limit, the water repellency of the water-repellent treated object treated with the water repellent composition can be improved.

[0045] The method for measuring the average number of isocyanate groups will be described in detail in the examples below.

[0046] When two or more types of first aliphatic polyisocyanate derivatives are used in combination, the average number of isocyanate groups is calculated from the weight ratio of the first aliphatic polyisocyanate derivatives and the average number of isocyanate functional groups thereof.

[0047] The first long-chain active hydrogen compound has both a hydrocarbon group having 12 to 30 carbon atoms and an active hydrogen group that reacts with the first aliphatic polyisocyanate derivative.

[0048] Examples of hydrocarbon groups having 12 to 30 carbon atoms include linear or branched saturated hydrocarbon groups having 12 to 30 carbon atoms (e.g., alkyl groups), and linear or branched unsaturated hydrocarbon groups having 12 to 30 carbon atoms (e.g., alkenyl groups).

[0049] An example of the active hydrogen group is a hydroxyl group.

[0050] Examples of such first long-chain active hydrogen compounds having both a hydrocarbon group and an active hydrogen group include linear saturated hydrocarbon group-containing active hydrogen compounds, branched saturated hydrocarbon group-containing active hydrogen compounds, linear unsaturated hydrocarbon group-containing active hydrogen compounds, and branched unsaturated hydrocarbon group-containing active hydrogen compounds.

[0051] The linear saturated hydrocarbon group-containing active hydrogen compound is an active hydrogen compound containing a linear saturated hydrocarbon group having from 12 to 30 carbon atoms, and examples thereof include linear saturated hydrocarbon group-containing alcohols such as n-tridecanol, n-tetradecanol, n-pentadecanol, n-hexadecanol, n-heptadecanol, n-octadecanol (stearyl alcohol), n-nonadecanol, and eicosanol, and linear saturated hydrocarbon group-containing sorbitan esters such as sorbitan tristearate.

[0052] The branched-chain saturated hydrocarbon group-containing active hydrogen compound is an active hydrogen compound containing a branched-chain saturated hydrocarbon group having from 12 to 30 carbon atoms, and examples thereof include branched-chain saturated hydrocarbon group-containing alcohols such as isomyristyl alcohol, isocetyl alcohol, isostearyl alcohol, and isoicosyl alcohol.

[0053] The linear unsaturated hydrocarbon group-containing active hydrogen compound is an active hydrogen compound containing a linear unsaturated hydrocarbon group having from 12 to 30 carbon atoms, and examples thereof include linear unsaturated hydrocarbon group-containing alcohols such as tetradecenyl alcohol, hexadecenyl alcohol, oleyl alcohol, icosenyl alcohol, docosenyl alcohol, tetracosenyl alcohol, hexacosenyl alcohol, and octacosenyl alcohol.

[0054] The branched-chain unsaturated hydrocarbon group-containing active hydrogen compound is an active hydrogen compound containing a branched-chain unsaturated hydrocarbon group having 12 to 30 carbon atoms, and examples thereof include phytol.

[0055] As the first long-chain active hydrogen compound, preferred examples include a linear saturated hydrocarbon group-containing active hydrogen compound and a linear unsaturated hydrocarbon group-containing active hydrogen compound.

[0056] The first long-chain active hydrogen compound can be used alone or in combination of two or more types. Preferably, a linear saturated hydrocarbon group-containing active hydrogen compound and a linear unsaturated hydrocarbon group-containing active hydrogen compound are used in combination, more preferably a linear saturated hydrocarbon group-containing alcohol and a linear unsaturated hydrocarbon group-containing alcohol are used in combination, and even more preferably a stearyl alcohol and an oleyl alcohol are used in combination.

[0057] When a linear saturated hydrocarbon group-containing alcohol and a linear unsaturated hydrocarbon group-containing alcohol are used in combination, the blending ratio of the linear saturated hydrocarbon group-containing alcohol is, relative to 100 parts by mass of the total amount of the linear saturated hydrocarbon group-containing alcohol and the linear unsaturated hydrocarbon group-containing alcohol, for example, 40 parts by mass or more, preferably 55 parts by mass or more, more preferably 70 parts by mass or more, and for example, 90 parts by mass or less, preferably 80 parts by mass or less. The blending ratio of the linear unsaturated hydrocarbon group-containing alcohol is, relative to 100 parts by mass of the total amount of the linear saturated hydrocarbon group-containing alcohol and the linear unsaturated hydrocarbon group-containing alcohol, for example, 10 parts by mass or more, preferably 20 parts by mass or more, and for example, 60 parts by mass or less, preferably 45 parts by mass or less, more preferably 30 parts by mass or less.

[0058] When the blending ratio of the linear saturated hydrocarbon group-containing alcohol is equal to or greater than the above lower limit, the crystallinity of the hydrocarbon group is improved, and as a result, the water repellency of the water-repellent treated object treated with this water repellent composition can be improved.

[0059] The cationic active hydrogen compound has both an active hydrogen group and a cationic group.

[0060] As described above, the active hydrogen group is an active hydrogen group that reacts with the first aliphatic polyisocyanate derivative, and examples thereof include a hydroxyl group.

[0061] The cationic active hydrogen compound preferably has two or more hydroxyl groups per molecule.

[0062] An example of the cationic group is a tertiary amino group.

[0063] That is, the cationic active hydrogen compound preferably has two or more hydroxyl groups per molecule as active hydrogen groups and a tertiary amino group as a cationic group.

[0064] Such a cationic active hydrogen compound can impart good dispersibility to the first polyurethane resin compound in water, and can also introduce cationic groups that have affinity for textile products (described below) into the resin, thereby improving washing durability (described below).

[0065] More preferably, the cationic active hydrogen compound has two hydroxyl groups per molecule as the active hydrogen groups and a tertiary amino group as the cationic group.

[0066] Examples of such cationic active hydrogen compounds include alkyldialkanolamines such as N-methyldiethanolamine, N-ethyldiethanolamine, N-propyldiethanolamine, N-butyldiethanolamine, and N-methyldipropanolamine, and preferably N-methyldiethanolamine.

[0067] The cationic active hydrogen compounds can be used alone or in combination of two or more kinds.

[0068] An acid compound is a compound that forms a salt with a cationic group.

[0069] Examples of the acid compound include organic acids and inorganic acids.

[0070] Examples of organic acids include acetic acid, lactic acid, tartaric acid, and malic acid, and preferably acetic acid and lactic acid, and more preferably acetic acid.

[0071] Examples of inorganic acids include hydrochloric acid, sulfuric acid, and phosphoric acid, and preferably hydrochloric acid.

[0072] The acid compound is preferably an organic acid.

[0073] When the acid compound contains an organic acid, the acid volatilizes by heat treatment, reducing ionicity and improving water resistance, thereby improving the water repellency of a water-repellent treated object treated with this water repellent composition. Furthermore, the acid volatilizes by heat treatment, making it easier for cationic groups to be adsorbed onto textile products, thereby improving the washing durability of textile products (described below).

[0074] The acid compounds can be used alone or in combination of two or more kinds.

[0075] To obtain the first polyurethane resin compound, a first aliphatic polyisocyanate derivative, a first long-chain active hydrogen compound, a cationic active hydrogen compound, and an acid compound are reacted with each other.

[0076] To react the first aliphatic polyisocyanate derivative, the first long-chain active hydrogen compound, the cationic active hydrogen compound, and the acid compound, first, the first long-chain active hydrogen compound is blended with the first aliphatic polyisocyanate derivative, and the first aliphatic polyisocyanate derivative and the first long-chain active hydrogen compound are reacted with each other.

[0077] In this case, for example, when the average number of isocyanate groups in the isocyanurate derivative of the aliphatic polyisocyanate is 3, the first long-chain active hydrogen compound is preferably blended so that two isocyanate groups in the isocyanurate derivative of the aliphatic polyisocyanate are modified by the first long-chain active hydrogen compound to hydrocarbon groups having 12 to 30 carbon atoms, one isocyanate group remains in the isocyanurate derivative of the aliphatic polyisocyanate, and no unreacted isocyanurate derivative of the aliphatic polyisocyanate remains.

[0078] Specifically, the first long-chain active hydrogen compound is blended with the first aliphatic polyisocyanate derivative so that the equivalent ratio of isocyanate groups to active hydrogen groups (isocyanate groups / active hydrogen groups) is, for example, 1.2 or more, preferably 1.5 or more, and for example, 2.0 or less.

[0079] As a result, the molecular terminals of the reaction product of the first aliphatic polyisocyanate derivative and the first long-chain active hydrogen compound (hereinafter referred to as the first intermediate reaction product) become hydrocarbon groups having 12 to 30 carbon atoms and isocyanate groups.

[0080] The reaction is carried out under a nitrogen atmosphere, and the reaction conditions are, for example, a reaction temperature of 70° C. to 120° C. and a reaction time of 1 hour to 6 hours.

[0081] The reaction is carried out until the isocyanate concentration of the first intermediate reaction product reaches a predetermined calculated value.

[0082] The isocyanate concentration can be measured using a potentiometric titrator by the n-dibutylamine method in accordance with JIS K-1556.

[0083] In the above reaction, a known solvent such as methyl ethyl ketone can also be added in an appropriate ratio.

[0084] Next, a cationic active hydrogen compound is added to the reaction liquid containing the first intermediate reaction product, and the first intermediate reaction product is reacted with the cationic active hydrogen compound.

[0085] In this case, the cationic active hydrogen compound is blended with the first intermediate reaction product so that the equivalent ratio of isocyanate groups to active hydrogen groups of the cationic active hydrogen compound (isocyanate groups / active hydrogen groups) is, for example, 0.95 or more and, for example, 1.05 or less.

[0086] The reaction is carried out under a nitrogen atmosphere, and the reaction conditions are, for example, a reaction temperature of 70° C. to 120° C. and a reaction time of 0.5 to 4 hours.

[0087] The above reaction is carried out until the reaction between the first intermediate reaction product and the cationic active hydrogen compound is completed.

[0088] In the above reaction, a known solvent such as methyl ethyl ketone can also be added in an appropriate ratio.

[0089] As a result, a reaction product of the first intermediate reaction product and the cationic active hydrogen compound (hereinafter referred to as a second intermediate reaction product) is obtained.

[0090] The second intermediate reaction product has a hydrocarbon group having 12 to 30 carbon atoms and a cationic group.

[0091] Next, the second intermediate reaction product is combined with an acid compound.

[0092] The mixing ratio of the acid compound is, for example, 0.5 mol or more, preferably 3 mol or more, and for example, 10 mol or less, preferably 4 mol or less, per 1 mol of the cationic group of the cationic active hydrogen compound.

[0093] As a result, the acid compound forms a salt with the cationic group of the second intermediate reaction product, and a reaction liquid containing a reaction product of the first aliphatic polyisocyanate derivative, the first long-chain active hydrogen compound, the cationic active hydrogen compound, and the acid compound is obtained.

[0094] The reaction product has a hydrocarbon group having 12 to 30 carbon atoms and a cationic group.

[0095] Furthermore, since the reaction product has a hydrocarbon group having 12 to 30 carbon atoms, it can self-disperse (self-emulsify) in water without the use of a dispersant (emulsifier). In other words, the reaction product can be internally emulsified.

[0096] Next, while maintaining the temperature of the reaction liquid at, for example, 50° C. or higher and 100° C. or lower, water is added to the reaction liquid to emulsify it.

[0097] The solvent is then removed from the reaction mixture.

[0098] As a result, an aqueous dispersion containing the above reaction product (aqueous dispersion of the first polyurethane resin compound) is obtained.

[0099] The solid content concentration of the aqueous dispersion is, for example, 10% by mass or more, and, for example, 30% by mass or less.

[0100] In addition, in such a polyurethane resin compound, the concentration of hydrocarbon groups is 30% or more and 85% or less, preferably 50%.

[0101] If the concentration of hydrocarbon groups is equal to or higher than the lower limit, the water repellency of the water-repellent treated object treated with this water repellent composition can be improved.

[0102] On the other hand, if the concentration of hydrocarbon groups is less than the lower limit, the water repellency of the water repellent treated object will decrease.

[0103] Furthermore, if the concentration of hydrocarbon groups is equal to or less than the above upper limit, the stability of the polyurethane resin can be improved.

[0104] On the other hand, if the concentration of hydrocarbon groups exceeds the upper limit, the stability of the polyurethane resin decreases.

[0105] The concentration of the hydrocarbon group can be calculated from the amounts of the components charged.

[0106] In the above description, the first aliphatic polyisocyanate derivative is first reacted with the first long-chain active hydrogen compound to obtain a reaction liquid containing a first intermediate reaction product, the first intermediate reaction product is then reacted with the cationic active hydrogen compound to obtain a reaction liquid containing a second intermediate reaction product, and the second intermediate reaction product is then reacted with the acid compound. However, the order of the reactions is not particularly limited. For example, the first aliphatic polyisocyanate derivative can be reacted with the cationic active hydrogen compound, and then the first long-chain active hydrogen compound can be reacted with the acid compound. Alternatively, the first aliphatic polyisocyanate derivative, the first long-chain active hydrogen compound, the cationic active hydrogen compound, and the acid compound can be mixed together and reacted. 1-2. Second polyurethane resin compound The second polyurethane resin compound includes a reaction product of an isocyanate compound and at least one selected from the group consisting of alkyl sorbitan having an alkyl group with 12 to 30 carbon atoms (hereinafter sometimes simply referred to as alkyl sorbitan), alkyl citrate having an alkyl group with 12 to 30 carbon atoms (hereinafter sometimes simply referred to as alkyl citrate), and pentaerythritol ester having an alkyl group with 12 to 30 carbon atoms (hereinafter sometimes simply referred to as pentaerythritol ester). 1-2-1. Isocyanate compounds Examples of the isocyanate compound include polyisocyanates such as aromatic polyisocyanates, araliphatic polyisocyanates, and aliphatic polyisocyanates.

[0107] Examples of aromatic polyisocyanates include aromatic diisocyanates such as 4,4'-, 2,4'-, or 2,2'-diphenylmethane diisocyanate or a mixture thereof (MDI), 2,4- or 2,6-tolylene diisocyanate or a mixture thereof (TDI), o-tolidine diisocyanate, 1,5-naphthalene diisocyanate (NDI), m- or p-phenylene diisocyanate or a mixture thereof, 4,4'-diphenyl diisocyanate, and 4,4'-diphenyl ether diisocyanate.

[0108] Examples of the araliphatic polyisocyanate include araliphatic diisocyanates such as 1,3- or 1,4-bis(isocyanatomethyl)benzene (also known as 1,3- or 1,4-xylylene diisocyanate) or a mixture thereof (XDI), 1,3- or 1,4-tetramethylxylylene diisocyanate or a mixture thereof (TMXDI), and ω,ω′-diisocyanato-1,4-diethylbenzene.

[0109] Examples of the aliphatic polyisocyanate include the aliphatic polyisocyanate of the first polyurethane resin compound described above.

[0110] The polyisocyanate is preferably an aliphatic polyisocyanate, more preferably hexamethylene diisocyanate.

[0111] Further, examples of the polyisocyanate include polyisocyanate derivatives, such as the polyisocyanate derivatives of the first polyurethane resin compound described above, and preferably biuret derivatives.

[0112] As the isocyanate compound, a biuret derivative of hexamethylene diisocyanate is more preferably used.

[0113] The isocyanate compounds can be used alone or in combination of two or more kinds. 1-2-2. Alkyl sorbitan Alkyl sorbitan is a reaction product (sorbitan ester) of sorbitan with a carboxylic acid having an alkyl group having 12 to 30 carbon atoms.

[0114] Examples of sorbitan include 1,4-sorbitan, 2,5-sorbitan, and 3,6-sorbitan, and preferably 1,4-sorbitan.

[0115] Sorbitan may be used alone or in combination of two or more types.

[0116] Examples of carboxylic acids having an alkyl group having 12 to 30 carbon atoms include linear saturated carboxylic acids having an alkyl group having 12 to 30 carbon atoms, such as lauric acid (dodecanoic acid), myristic acid (detradecanoic acid), palmitic acid (hexadecanoic acid), stearic acid (octadecanoic acid), and behenic acid (docosanoic acid); and branched saturated carboxylic acids having an alkyl group having 12 to 30 carbon atoms, such as isostearic acid (2-heptylundecanoic acid). Of these, linear saturated carboxylic acids having an alkyl group having 12 to 30 carbon atoms are preferred, and stearic acid is more preferred.

[0117] The carboxylic acid having an alkyl group having 12 to 30 carbon atoms can be used alone or in combination of two or more kinds.

[0118] Alkyl sorbitan can be obtained by esterifying sorbitan with a carboxylic acid having an alkyl group having 12 to 30 carbon atoms.

[0119] Specifically, in the above reaction, the equivalent ratio of the hydroxyl groups of sorbitan to the carboxyl groups of the carboxylic acid is adjusted so that one to three of the four hydroxyl groups of sorbitan react with the carboxyl groups of the carboxylic acid having 12 to 30 alkyl groups. Therefore, the resulting alkylsorbitan has at least one hydroxyl group.

[0120] Such alkyl sorbitan preferably includes sorbitan monostearate (preferably 1,4-sorbitan monostearate) and sorbitan tristearate (preferably 1,4-sorbitan tristearate).

[0121] The alkyl sorbitan may be used alone or in combination of two or more kinds, and preferably, sorbitan monostearate and sorbitan tristearate are used in combination.

[0122] When sorbitan monostearate and sorbitan tristearate are used in combination, the blending ratio of sorbitan monostearate relative to 100 parts by mass of the total amount of sorbitan monostearate and sorbitan tristearate is, for example, 10 parts by mass or more and, for example, 50 parts by mass or less. Furthermore, the blending ratio of sorbitan tristearate relative to 100 parts by mass of the total amount of sorbitan monostearate and sorbitan tristearate is, for example, 10 parts by mass or more and, for example, 50 parts by mass or less. 1-2-2. Alkyl citrate Alkyl citrate is a reaction product (citric acid ester) of citric acid with an alcohol having an alkyl group with 12 to 30 carbon atoms.

[0123] Examples of alcohols having an alkyl group with 12 to 30 carbon atoms include linear monohydric alcohols having an alkyl group with 12 to 30 carbon atoms, such as lauryl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, and lanolin alcohol; and branched monohydric alcohols having an alkyl group with 12 to 30 carbon atoms, such as isostearyl alcohol, 2-octyldodecanol, and 2-decyltetradecanol.

[0124] The alkyl citrate can be obtained by esterifying citric acid with an alcohol having an alkyl group having 12 to 30 carbon atoms using a known method. 1-2-3. Pentaerythritol esters Pentaerythritol esters are reaction products of pentaerythritol and carboxylic acids having an alkyl group containing 12 to 30 carbon atoms.

[0125] The above-mentioned carboxylic acid having an alkyl group having 12 to 30 carbon atoms is the same as the carboxylic acid having an alkyl group having 12 to 30 carbon atoms mentioned for the alkyl sorbitan.

[0126] Pentaerythritol esters can be obtained by subjecting pentaerythritol to an esterification reaction with a carboxylic acid having an alkyl group having 12 to 30 carbon atoms by a known method.

[0127] Specifically, in the above reaction, the equivalent ratio of the hydroxyl groups of the pentaerythritol ester to the carboxyl groups of the carboxylic acid having an alkyl group of 12 to 30 is adjusted so that one to three of the four hydroxyl groups of the pentaerythritol ester react with the carboxyl groups of the carboxylic acid having an alkyl group of 12 to 30. Therefore, the resulting pentaerythritol ester has at least one hydroxyl group. 1-2-4. Reaction of an isocyanate compound with at least one selected from the group consisting of alkyl sorbitan, alkyl citrate, and pentaerythritol ester To react an isocyanate compound with at least one selected from the group consisting of alkyl sorbitan, alkyl citrate, and pentaerythritol ester, the isocyanate compound is blended with at least one selected from the group consisting of alkyl sorbitan, alkyl citrate, and pentaerythritol ester so that the equivalent ratio of isocyanate groups to active hydrogen groups (hydroxyl groups) (isocyanate groups / active hydrogen groups (hydroxyl groups)) is, for example, 0.9 or more and 1.2 or less.

[0128] This gives a reaction product of the isocyanate compound and at least one member selected from the group consisting of alkyl sorbitan, alkyl citrate, and pentaerythritol ester.

[0129] In the above reaction, if necessary, a known catalyst (preferably a tin catalyst such as dibutyltin dilaurate) can be blended in an appropriate ratio.

[0130] In the above reaction, if necessary, a known organic solvent (preferably 4-methyl-2-pentanone) can be added in an appropriate ratio. In this case, a reaction liquid containing a reaction product of an isocyanate compound and at least one selected from the group consisting of alkyl sorbitan, alkyl citrate, and pentaerythritol ester is obtained.

[0131] In the above reaction, the reaction conditions include a reaction temperature of, for example, 40°C or higher and, for example, 90°C or lower, and a reaction time of, for example, 1 hour or higher and, for example, 6 hours or lower.

[0132] Next, while maintaining the temperature of this reaction liquid at, for example, 50° C. or higher and 100° C. or lower, water and an emulsifier (preferably a cationic emulsifier) ​​are added to this reaction liquid to emulsify it.

[0133] The solvent is then removed from the reaction mixture.

[0134] This results in an aqueous dispersion containing a reaction product of an isocyanate compound and at least one member selected from the group consisting of alkyl sorbitan, alkyl citrate, and pentaerythritol ester.

[0135] The solid content concentration of the dispersion is, for example, 10% by mass or more and, for example, 40% by mass or less.

[0136] Of these reaction products, a reaction product of an isocyanate compound and an alkylsorbitan is preferable. 1-3.Third polyurethane resin compound The third polyurethane resin compound includes a reaction product of a second aliphatic polyisocyanate derivative and a second long-chain active hydrogen compound.

[0137] Examples of the second aliphatic polyisocyanate derivative include aliphatic polyisocyanate derivatives similar to the first aliphatic polyisocyanate derivative of the first polyurethane resin compound described above, and preferably include a biuret derivative of hexamethylene diisocyanate.

[0138] The second aliphatic polyisocyanate derivatives can be used alone or in combination of two or more kinds.

[0139] The average number of isocyanate groups in the second aliphatic polyisocyanate derivative is 2 or more, preferably 2.5, more preferably 2.9, and for example, 3.8 or less.

[0140] When the average number of isocyanate groups is equal to or greater than the lower limit, the water repellency of the water-repellent treated object treated with the water repellent composition can be improved.

[0141] The second long-chain active hydrogen compound has both a hydrocarbon group having 12 to 30 carbon atoms and an active hydrogen group that reacts with the second aliphatic polyisocyanate derivative.

[0142] Examples of the hydrocarbon group having 12 to 30 carbon atoms include the same hydrocarbon groups as the hydrocarbon groups having 12 to 30 carbon atoms of the first polyurethane resin compound described above.

[0143] An example of the active hydrogen group is a hydroxyl group.

[0144] Examples of the second long-chain active hydrogen compound include long-chain active hydrogen compounds similar to the first long-chain active hydrogen compound of the first polyurethane resin compound described above, and preferably include a linear saturated hydrocarbon group-containing active hydrogen compound, and more preferably stearyl alcohol.

[0145] To react the second aliphatic polyisocyanate derivative with the second long-chain active hydrogen compound, the second aliphatic polyisocyanate derivative is blended with the second long-chain active hydrogen compound so that the equivalent ratio of isocyanate groups to active hydrogen groups (hydroxyl groups) (isocyanate groups / active hydrogen groups (hydroxyl groups)) is, for example, 0.9 or more and 1.2 or less.

[0146] This gives a reaction product of the second aliphatic polyisocyanate derivative and the second long-chain active hydrogen compound.

[0147] In the above reaction, if necessary, a known organic solvent (methyl ethyl ketone) can be added in an appropriate ratio. In such a case, a reaction liquid containing a reaction product of the second aliphatic polyisocyanate derivative and the second long-chain active hydrogen compound is obtained.

[0148] In the above reaction, the reaction conditions include a reaction temperature of, for example, 40°C or higher and, for example, 90°C or lower, and a reaction time of, for example, 1 hour or higher and, for example, 6 hours or lower.

[0149] Next, while maintaining the temperature of this reaction liquid at, for example, 50° C. or higher and 100° C. or lower, water and an emulsifier (preferably a cationic emulsifier) ​​are added to this reaction liquid to emulsify it.

[0150] The solvent is then removed from the reaction mixture.

[0151] This results in an aqueous dispersion containing a reaction product of the second aliphatic polyisocyanate derivative and the second long-chain active hydrogen compound.

[0152] The solid content concentration of the dispersion is, for example, 10% by mass or more and, for example, 40% by mass or less.

[0153] As described above, the polyurethane resin compound comprises at least one selected from the group consisting of the first polyurethane resin compound, the second polyurethane resin compound, and the third polyurethane resin compound, preferably any one selected from the group consisting of the first polyurethane resin compound, the second polyurethane resin compound, and the third polyurethane resin compound, and more preferably, from the viewpoint of improving the water repellency of a water-repellent treated object treated with this water repellent composition, the polyurethane resin compound comprises the first polyurethane resin compound.

[0154] In particular, when the polyurethane resin compound includes a first polyurethane resin compound, and the non-fluorine-containing water-repellent compound is an acrylic polymer (specifically, a polymer including a structural unit derived from a long-chain aliphatic hydrocarbon group-containing (meth)acrylate (described later)), the water repellency of urethane / polyester blended fabrics and the like is improved.

[0155] The blending ratio of the polyurethane resin compound is, relative to 100 parts by mass of the total amount of the polyurethane resin compound and the non-fluorine-containing water-repellent compound, for example, 0.1 parts by mass or more, preferably 2 parts by mass or more, more preferably 4 parts by mass or more, and for example, 99.9 parts by mass or less, preferably 70 parts by mass or less, more preferably 50 parts by mass or less, even more preferably 30 parts by mass or less, and particularly preferably 15 parts by mass or less. 2. Non-fluorine-containing water-repellent compounds The non-fluorine-containing water-repellent compound is a compound having water repellency that does not contain fluorine atoms, and is, for example, a polymer containing structural units derived from a long-chain aliphatic hydrocarbon group-containing (meth)acrylate and / or an amide group-containing monomer.

[0156] Such a non-fluorine-containing water-repellent compound can be obtained by polymerizing a monomer component containing a long-chain aliphatic hydrocarbon group-containing (meth)acrylate and / or an amide group-containing monomer.

[0157] The long-chain aliphatic hydrocarbon group-containing (meth)acrylate is a long-chain aliphatic hydrocarbon group-containing methacrylate and / or a long-chain aliphatic hydrocarbon group-containing acrylate, and is represented by the following formula (1).

[0158] [ka]

[0159] In the above formula (1), R 1 represents a hydrogen atom or a methyl group.

[0160] In addition, in the above formula (1), R 2 represents a linear or branched long-chain aliphatic hydrocarbon group having 18 to 30 carbon atoms, preferably a linear alkyl group having 18 to 30 carbon atoms.

[0161] Specific examples of such long-chain aliphatic hydrocarbon group-containing (meth)acrylates include stearyl (meth)acrylate and behenyl (meth)acrylate, preferably stearyl (meth)acrylate, and more preferably stearyl acrylate.

[0162] The long-chain aliphatic hydrocarbon group-containing (meth)acrylates can be used alone or in combination of two or more kinds.

[0163] The amide group-containing monomer is represented by the following formula (2).

[0164] [ka]

[0165] In the above formula (2), R 3 is an organic residue having an ethylenically unsaturated double bond group, and is not particularly limited as long as it has a carbon-carbon double bond.

[0166] R 3 For example, -C(=O)CR 21 =CH2, -CHR 21 =CH2, -CH2CHR 21 =CH2, etc., R 21 is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.

[0167] In other words, R 21 In the case of a hydrogen atom, -C(=O)CR 21 =CH2 is an acryloyl group, -CHR 21 =CH2 is a vinyl group, -CH2CHR 21 =CH2 is an allyl group.

[0168] Also, R 3 As the ethylenically unsaturated double bond group, the ethylenically unsaturated double bond group at least contains an ethylenically unsaturated double bond group, but may also contain various other organic groups in combination. For example, the ethylenically unsaturated double bond group may also contain an organic group such as a chain hydrocarbon group, a cyclic hydrocarbon group, a polyoxyalkylene group, or a polysiloxane group (including those substituted with various substituents, but excluding those containing a fluorine atom).

[0169] In the above formula (2), R 4 is a monovalent hydrocarbon group having 7 to 30 carbon atoms (preferably 11 or more, more preferably 15 or more, and preferably 27 or less, more preferably 23 or less), and is preferably a chain hydrocarbon group or a cyclic hydrocarbon group, more preferably a chain hydrocarbon group, and even more preferably a linear saturated hydrocarbon group.

[0170] In the above formula (2), R5 is a divalent hydrocarbon group having 1 to 5 carbon atoms, preferably a chain hydrocarbon group, more preferably a straight-chain hydrocarbon group (saturated hydrocarbon group or unsaturated hydrocarbon group), or a branched hydrocarbon group (saturated hydrocarbon group or unsaturated hydrocarbon group).

[0171] Examples of such amide group-containing monomers include palmitic acid amidoethyl (meth)acrylate, stearic acid amidoethyl (meth)acrylate, behenic acid amidoethyl (meth)acrylate, myristate amidoethyl (meth)acrylate, laurate amidoethyl (meth)acrylate, isostearate ethyl amido(meth)acrylate, oleic acid ethyl amido(meth)acrylate, t-butylcyclohexylcaproic acid amidoethyl (meth)acrylate, adamantanecarboxylic acid ethyl amido(meth)acrylate, naphthalenecarboxylic acid amidoethyl (meth)acrylate, anthracenecarboxylic acid amidoethyl (meth)acrylate, and the like. amide group-containing (meth)acrylates such as palmitic acid amidoethyl (meth)acrylate, stearic acid amidopropyl (meth)acrylate, and the like; amide group-containing vinyl ethers such as palmitic acid amidoethyl vinyl ether, stearic acid amidoethyl vinyl ether, and the like; amide group-containing allyl ethers such as palmitic acid amidoethyl allyl ether, stearic acid amidoethyl allyl ether, and the like; preferably, amide group-containing (meth)acrylates; more preferably, palmitic acid amidoethyl (meth)acrylate, stearic acid amidoethyl (meth)acrylate, or a combination thereof.

[0172] When palmitic acid amidoethyl (meth)acrylate and stearic acid amidoethyl (meth)acrylate are used in combination, the amount of stearic acid amidoethyl (meth)acrylate is, for example, 55 mass% or more, preferably 60 mass% or more, more preferably 65 mass% or more, and for example, 99 mass% or less, preferably 85 mass% or less, more preferably 80 mass% or less, based on the total amount of them.

[0173] The amide group-containing monomers can be used alone or in combination of two or more kinds.

[0174] Furthermore, the above-mentioned monomer component may also contain a short-chain aliphatic hydrocarbon group-containing (meth)acrylate, if necessary.

[0175] The short-chain aliphatic hydrocarbon group-containing (meth)acrylate is represented by the following formula (3).

[0176] [ka]

[0177] In the above formula (3), R 6 represents a hydrogen atom or a methyl group.

[0178] In addition, in the above formula (1), R 7 represents a linear or branched short-chain aliphatic hydrocarbon group having 17 or less carbon atoms (for example, a linear alkyl group having 17 or less carbon atoms, or a branched alkyl group having 17 or less carbon atoms).

[0179] Specific examples of such short-chain aliphatic hydrocarbon group-containing (meth)acrylates include methyl (meth)acrylate, ethyl (meth)acrylate, isopropyl (meth)acrylate, t-butyl (meth)acrylate, lauryl (meth)acrylate, myristyl (meth)acrylate, and cetyl (meth)acrylate.

[0180] The short-chain aliphatic hydrocarbon group-containing (meth)acrylates can be used alone or in combination of two or more kinds.

[0181] Furthermore, the above-mentioned monomer component may also contain a cyclic hydrocarbon group-containing (meth)acrylate, if necessary.

[0182] The cyclic hydrocarbon group-containing (meth)acrylate is represented by the following formula (4).

[0183] [ka]

[0184] In the above formula (4), R 8 represents a hydrogen atom or a methyl group.

[0185] In addition, in the above formula (4), R 9 represents a cyclic hydrocarbon group having 4 to 30 carbon atoms (for example, an alicyclic group, an aromatic group, etc.).

[0186] Examples of such cyclic hydrocarbon group-containing (meth)acrylates include alicyclic group-containing (meth)acrylates such as cyclohexyl (meth)acrylate, t-butylcyclohexyl (meth)acrylate, isobornyl (meth)acrylate, dicyclopentanyl (meth)acrylate, dicyclopentenyl (meth)acrylate, dicyclopentanyloxyethyl (meth)acrylate, tricyclopentanyl (meth)acrylate, adamantyl (meth)acrylate, 2-methyl-2-adamantyl (meth)acrylate, and 2-ethyl-2-adamantyl (meth)acrylate; and aromatic group-containing (meth)acrylates such as benzyl (meth)acrylate.

[0187] The cyclic hydrocarbon group-containing (meth)acrylates can be used alone or in combination of two or more kinds.

[0188] Furthermore, the monomer component may also contain, if necessary, a fluorine-free copolymerizable monomer copolymerizable with the above-mentioned monomer components (long-chain aliphatic hydrocarbon group-containing (meth)acrylate, amide group-containing monomer, short-chain aliphatic hydrocarbon group-containing (meth)acrylate, and cyclic hydrocarbon group-containing (meth)acrylate).

[0189] Examples of the fluorine-free copolymerizable monomer include carboxyl group-containing monomers such as (meth)acrylic acid, vinyl ester monomers such as vinyl acetate, aromatic vinyl monomers such as styrene and vinyl toluene, hydroxyl group-containing monomers such as 2-hydroxyethyl acrylate and 4-hydroxybutyl acrylate, and halogenated vinyl monomers (excluding those containing a fluorine atom) such as vinyl chloride, vinyl bromide and vinyl iodide, preferably halogenated vinyl monomers (excluding those containing a fluorine atom), more preferably vinyl chloride.

[0190] The fluorine-free copolymerizable monomers can be used alone or in combination of two or more kinds.

[0191] The monomer component preferably contains a long-chain aliphatic hydrocarbon group-containing (meth)acrylate and / or an amide group-containing monomer, and more preferably contains only a long-chain aliphatic hydrocarbon group-containing (meth)acrylate.

[0192] The monomer component preferably contains a long-chain aliphatic hydrocarbon group-containing (meth)acrylate and / or an amide group-containing monomer, and a fluorine-free copolymerizable monomer, more preferably contains only a long-chain aliphatic hydrocarbon group-containing (meth)acrylate and a fluorine-free copolymerizable monomer, or contains a long-chain aliphatic hydrocarbon group-containing (meth)acrylate, an amide group-containing monomer, and a fluorine-free copolymerizable monomer, and even more preferably contains only a long-chain aliphatic hydrocarbon group-containing (meth)acrylate, an amide group-containing monomer, and a fluorine-free copolymerizable monomer.

[0193] The non-fluorine-containing water-repellent compound can be obtained by polymerizing the above-mentioned monomer components.

[0194] Specifically, the non-fluorine-repellent compound is obtained by polymerizing a long-chain aliphatic hydrocarbon group-containing (meth)acrylate and / or an amide group-containing monomer, an optionally blended short-chain aliphatic hydrocarbon group-containing (meth)acrylate, an optionally blended cyclic hydrocarbon group-containing (meth)acrylate, and an optionally blended non-fluorine-containing copolymerizable monomer under the conditions described below.

[0195] This results in a fluorine-free water-repellent compound.

[0196] Such a non-fluorine-containing water-repellent compound is a polymer containing structural units derived from a long-chain aliphatic hydrocarbon group-containing (meth)acrylate and / or an amide group-containing monomer.

[0197] When the non-fluorine-containing water-repellent compound is a polymer containing structural units derived from a long-chain aliphatic hydrocarbon group-containing (meth)acrylate and / or an amide group-containing monomer, the water repellency of an object treated with the water repellent composition can be improved.

[0198] As will be described in detail later, the polymerization of the monomer components is preferably carried out when the water repellent composition is prepared.

[0199] Furthermore, a dendrimer-based water repellent agent can also be used as the non-fluorine-containing water repellent compound.

[0200] Dendrimer-based water repellents include chain polymer compounds having a structure that is radially and regularly branched from the center.

[0201] An example of the chain polymer compound is Ecoplus (manufactured by Rudolph).

[0202] The blending ratio of the non-fluorine-containing water-repellent compound relative to 100 parts by mass of the total amount of the polyurethane resin compound and the non-fluorine-containing water-repellent compound is, for example, 0.1 parts by mass or more, preferably 30 parts by mass or more, more preferably 50 parts by mass or more, even more preferably 70 parts by mass or more, particularly preferably 85 parts by mass or more, and for example, 99 parts by mass or less, preferably 96 parts by mass or less, more preferably 90 parts by mass or less.

[0203] The blending ratio of the non-fluorine-containing water-repellent compound relative to the water-repellent composition is, for example, 15 mass % or more and, for example, 30 mass % or less.

[0204] When the blending ratio of the non-fluorine-containing water-repellent compound is within the above range, the water repellency of the water-repellent treated object treated with this water repellent composition can be improved. 3. Surfactants The surfactant is added to the water repellent composition from the viewpoint of dispersing the polyurethane resin compound and the non-fluorine-containing water repellent compound.

[0205] Examples of surfactants include nonionic surfactants, anionic surfactants, and amphoteric surfactants.

[0206] Examples of nonionic surfactants include polyoxyethylene alkyl ethers, polyoxyethylene alkylphenyl ethers, polyoxyethylene fatty acid esters, sorbitan fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene sorbitol fatty acid esters, glycerin fatty acid esters, polyoxyethylene glycerin fatty acid esters, polyglycerin fatty acid esters, sucrose fatty acid esters, polyoxyethylene alkylamines, polyoxyethylene fatty acid amides, fatty acid alkylolamides, alkylalkanolamides, acetylene glycol, oxyethylene adducts of acetylene glycol, and polyethylene glycol polypropylene glycol block copolymers, and preferably, glycerin fatty acid esters.

[0207] Examples of cationic surfactants include dodecyltrimethylammonium acetate, trimethyltetradecylammonium chloride, hexadecyltrimethylammonium bromide, trimethyloctadecylammonium chloride, (dodecylmethylbenzyl)trimethylammonium chloride, benzyldodecyldimethylammonium chloride, methyldodecyldi(hydropolyoxyethylene)ammonium chloride, and benzyldodecyldi(hydropolyoxyethylene)ammonium chloride.

[0208] Examples of amphoteric surfactants include alanine compounds, imidazolinium betaine compounds, amido betaine compounds, lauryl betaine, and fatty acid betaine compounds such as acetic acid betaine.

[0209] As the surfactant, preferably, a nonionic surfactant is used.

[0210] The surfactants can be used alone or in combination of two or more kinds.

[0211] The surfactant is added in an amount of, for example, 10 parts by mass or more and, for example, 40 parts by mass or less, relative to 100 parts by mass of the total amount of the polyurethane resin compound and the non-fluorine-containing water-repellent compound.

[0212] The blending ratio of the surfactant with respect to the water repellent composition is, for example, 0.01 mass % or more and, for example, 1 mass % or less. 4.Liquid medium The liquid medium contains water as an essential component.

[0213] The liquid medium may further contain a solvent, if necessary.

[0214] Examples of the solvent include ketones such as acetone, methyl ethyl ketone, and cyclohexanone; nitriles such as acetonitrile; alkyl esters such as methyl acetate, ethyl acetate, butyl acetate, and isobutyl acetate; aliphatic hydrocarbons such as n-hexane, n-heptane, and octane; alicyclic hydrocarbons such as cyclohexane and methylcyclohexane; aromatic hydrocarbons such as toluene, xylene, and ethylbenzene; alcohols such as ethanol and propylene glycol; and glycol ethers such as dipropylene glycol, dipropylene glycol monomethyl ether, and tripropylene glycol, preferably glycol ethers.

[0215] The mixing ratio of the solvent relative to the liquid medium is, for example, 5 mass % or more, preferably 15 mass % or more, and for example, 30 mass % or less.

[0216] The solvents can be used alone or in combination of two or more kinds.

[0217] The blending ratio of the liquid medium is, for example, 150 parts by mass or more and, for example, 400 parts by mass or less, relative to 100 parts by mass of the total amount of the polyurethane resin compound and the non-fluorine-containing water-repellent compound.

[0218] The blending ratio of the liquid medium relative to the water repellent composition is, for example, 50 mass % or more and, for example, 80 mass % or less. 5. Other Ingredients The water repellent composition optionally contains at least one selected from the group consisting of a blocked isocyanate compound, a silicone polymer, and a wax.

[0219] A blocked isocyanate compound is a compound in which the isocyanate group of an isocyanate compound is blocked with a blocking agent.

[0220] If the water repellent composition contains a blocked isocyanate compound, it is possible to improve the washing durability described below.

[0221] Specific examples of blocked isocyanate compounds include hydrophobic compounds described in JP 2017-222827 A, and preferably, urethane compounds having 3,5-dimethylpyrazole as a blocking agent.

[0222] The blocked isocyanate compound can also be used as an aqueous dispersion obtained by mixing and emulsifying it with an emulsifier (described later).

[0223] In such a case, the solid content concentration of the aqueous dispersion is, for example, 10% by mass or more and, for example, 40% by mass or less.

[0224] The blocked isocyanate compounds can be used alone or in combination of two or more kinds.

[0225] Silicone polymers are reaction products (hydrosilylation reaction products) of silicones having SiH groups with aromatic compounds and / or α-olefins having vinyl groups.

[0226] If the water repellent composition contains a silicone polymer, the water repellency of the object treated with the water repellent composition can be improved.

[0227] Examples of silicones having a SiH group include methylhydrogensilicone (degree of polymerization 10 or more and 200 or less), and copolymers of dimethylsiloxane and methylhydrogensiloxane, and preferably methylhydrogensilicone.

[0228] The silicones having SiH groups can be used alone or in combination of two or more kinds.

[0229] Examples of aromatic compounds having a vinyl group include styrene, α-methylstyrene, vinylnaphthalene, allyl phenyl ether, allyl naphthyl ether, allyl-p-cumylphenyl ether, allyl-o-phenylphenyl ether, allyl-tri(phenylethyl)-phenyl ether, and allyl-tri(2-phenylpropyl)phenyl ether.

[0230] The aromatic compounds having a vinyl group can be used alone or in combination of two or more kinds.

[0231] Examples of α-olefins include α-olefins having 2 to 30 carbon atoms, such as ethene, propene, 1-butene, 1-pentene, 1-hexene, 1-heptene, 1-octene, 1-nonene, 1-decene, 1-undecene, 1-dodecene, 1-tetradecene, 1-hexadecene, 1-octadecene, and 1-hexacosene. Preferred are ethene and 1-hexacosene, and more preferably 1-hexacosene from the viewpoint of improving the water repellency of an object treated with the water repellent composition.

[0232] The α-olefins can be used alone or in combination of two or more kinds.

[0233] To subject a silicone having an SiH group to a hydrosilylation reaction with an aromatic compound and / or an α-olefin having a vinyl group, the silicone having an SiH group is blended with an aromatic compound and / or an α-olefin having a vinyl group.

[0234] The blending ratios of the SiH group-containing silicone, the vinyl group-containing aromatic compound, and the α-olefin are each appropriately selected depending on the SiH group equivalent of the SiH group-containing silicone, the number average molecular weight, and the like.

[0235] The aromatic compound having a vinyl group and / or the α-olefin may be blended in whole or in portions.

[0236] In the above hydrosilylation reaction, a hydrosilylation catalyst can be added in an appropriate ratio, if necessary.

[0237] Examples of the hydrosilylation catalyst include platinum and palladium, and preferably platinum.

[0238] The hydrosilylation catalysts can be used alone or in combination of two or more kinds.

[0239] In the above hydrosilylation reaction, a known organic solvent can be added in an appropriate ratio, if necessary.

[0240] In the hydrosilylation reaction, the reaction conditions are, for example, a reaction temperature of 50°C or higher and 90°C or lower, and a reaction time of 1 hour or higher and 6 hours or lower.

[0241] The hydrosilylation reaction is carried out until the peak of the SiH group disappears in infrared spectroscopy of the silicone having the SiH group.

[0242] This results in a silicone polymer.

[0243] Of these silicone polymers, preferred are reaction products of silicones having SiH groups with α-olefins, more preferred are reaction products of methylhydrogensilicone with ethene (dimethylpolysiloxane), and reaction products of methylhydrogensilicone with 1-hexacosene, and even more preferred are reaction products of methylhydrogensilicone with 1-hexacosene, from the viewpoint of improving the water repellency of water-repellent treated objects treated with this water repellent composition.

[0244] The silicone polymer can also be used as an aqueous dispersion emulsified by mixing it with the above-mentioned surfactant (preferably sorbitan fatty acid ester), water, the above-mentioned solvent, and an emulsifier (preferably polyoxyethylene alkyl ether) (described below).

[0245] In such a case, the solid content concentration of the aqueous dispersion is, for example, 10% by mass or more and, for example, 40% by mass or less.

[0246] The silicone polymers can be used alone or in combination of two or more kinds.

[0247] Examples of waxes include natural waxes and synthetic waxes.

[0248] Examples of natural waxes include petroleum waxes such as paraffin wax and microcrystalline wax, and natural waxes such as vegetable waxes such as carnauba wax and candelilla wax.

[0249] An example of the synthetic wax is polyethylene wax.

[0250] The wax is preferably a natural wax, more preferably paraffin wax.

[0251] The wax can also be used as an aqueous dispersion emulsified by mixing it with the above-mentioned surfactant (preferably sorbitan fatty acid ester), water, and an emulsifier (preferably polyoxyethylene alkyl ether) (described later).

[0252] In such a case, the solid content concentration of the aqueous dispersion is, for example, 10% by mass or more and, for example, 40% by mass or less.

[0253] If the water repellent composition contains a wax, the water repellency of the water repellent treated object can be improved.

[0254] The waxes can be used alone or in combination of two or more types.

[0255] The blending ratio of at least one selected from the group consisting of a blocked isocyanate compound, a silicone polymer, and a wax is, for example, 5 parts by mass or more and, for example, 20 parts by mass or less, relative to 100 parts by mass of the total amount of the polyurethane resin compound and the non-fluorine-containing water-repellent compound.

[0256] The blending ratio of at least one selected from the group consisting of blocked isocyanate compounds, silicone polymers, and waxes is 1% by mass or more and, for example, 10% by mass or less, relative to the water repellent composition.

[0257] When the water repellent composition contains a blocked isocyanate compound, the blending ratio of the blocked isocyanate compound is, for example, 5% by mass or more and, for example, 20% by mass or less, based on the total amount of the polyurethane composition, the non-fluorinated water repellent compound, and the blocked isocyanate compound.

[0258] Furthermore, when the water repellent composition contains a silicone polymer, the blending ratio of the silicone polymer is, for example, 5 mass% or more and, for example, 20 mass% or less, based on the total amount of the polyurethane composition, the non-fluorine-containing water repellent compound, and the silicone polymer.

[0259] Furthermore, when the water repellent composition contains a wax, the blending ratio of the wax is, for example, 5 mass% or more and, for example, 20 mass% or less, based on the total amount of the polyurethane composition, the non-fluorinated water repellent compound, and the wax. 6. Method for producing water repellent composition The water repellent composition can be obtained by mixing a polyurethane resin compound, a non-fluorine-containing water repellent compound, a surfactant, and a liquid medium.

[0260] Specifically, the water repellent composition is preferably obtained by a method (hereinafter referred to as Method 1) in which the monomer components constituting the above-mentioned non-fluorinated water repellent compound are polymerized in the presence of a polyurethane resin compound, a surfactant, and a liquid medium to produce the non-fluorinated water repellent compound.

[0261] Examples of the polymerization method include suspension polymerization and emulsion polymerization, and preferably emulsion polymerization is used from the viewpoint of obtaining an emulsion of a non-fluorine-containing water-repellent compound.

[0262] When emulsion polymerization is employed, first, all or part of the above-mentioned monomer components (specifically, the long-chain aliphatic hydrocarbon group-containing (meth)acrylate and / or amide group-containing monomer, the short-chain aliphatic hydrocarbon group-containing (meth)acrylate which is blended as necessary, the cyclic hydrocarbon group-containing (meth)acrylate which is blended as necessary, and the fluorine-free copolymerizable monomer which is blended as necessary), a polyurethane resin compound, a surfactant, and a liquid medium are mixed to prepare a mixed liquid.

[0263] The surfactant is added in an amount of, for example, 1 part by mass or more, or preferably 3 parts by mass or more, and for example, 10 parts by mass or less, or preferably 5 parts by mass or less, relative to 100 parts by mass of the total amount of the monomer components.

[0264] The mixing ratio of the liquid medium relative to 100 parts by mass of the total amount of the monomer components is, for example, 100 parts by mass or more, preferably 200 parts by mass or more, and for example, 400 parts by mass or less, preferably 300 parts by mass or less.

[0265] Next, an emulsifier is added to this mixture.

[0266] The emulsifier may be a known emulsifier, such as a cationic emulsifier or an anionic emulsifier.

[0267] The above-mentioned surfactants can also be used as the emulsifier.

[0268] The emulsifier preferably contains a reactive emulsifier. When the emulsifier contains a reactive emulsifier, the non-fluorine-containing water-repellent compound (polymer of the above-mentioned monomer components) becomes a polymer containing structural units derived from the reactive emulsifier.

[0269] If the non-fluorine-containing water-repellent compound is a polymer containing structural units derived from a reactive emulsifier, the product stability of the aqueous dispersion (repellent composition) is improved without reducing the water repellency.

[0270] The reactive emulsifier is an emulsifying dispersant having radical reactivity, that is, an emulsifier having one or more polymerizable unsaturated groups in the molecule, and is copolymerizable with the above-mentioned monomer component.

[0271] Examples of the reactive emulsifier include the reactive emulsifiers described in JP 2017-25440 A, and preferably the reactive emulsifier represented by the following formula (5):

[0272] [ka]

[0273] In the above formula (5), R 10 represents an organic residue having an ethylenically unsaturated double bond group having 12 to 20 carbon atoms.

[0274] R 11 represents an oxyalkylene group having 2 to 10 carbon atoms, preferably an oxyethylene group. If the reactive emulsifier is a reactive emulsifier represented by the above formula (5), the product stability of the aqueous dispersion (repellent composition) is improved without reducing the water repellency.

[0275] The reactive emulsifier represented by the above formula (5) is preferably a polyoxyethylene alkylphenol.

[0276] The emulsifiers can be used alone or in combination of two or more kinds.

[0277] The mixing ratio of the emulsifier relative to 100 parts by mass of the total amount of the monomer components is, for example, 5 parts by mass or more and, for example, 18 parts by mass or less.

[0278] The mixing ratio of the emulsifier is, for example, 8 parts by mass or more and, for example, 20 parts by mass or less, relative to 100 parts by mass of the total amount of the polyurethane resin compound and the non-fluorine-containing water-repellent compound.

[0279] The blending ratio of the emulsifier with respect to the water repellent composition is, for example, 0.5 mass % or more and, for example, 5 mass % or less.

[0280] After mixing the above-mentioned components, the mixture is stirred and subjected to ultrasonic waves to emulsify the mixture.

[0281] As a method for stirring, for example, a dispersing machine such as a homomixer, ultrasonic homogenizer, pressure homogenizer, milder, or porous membrane injection dispersing machine is used, and preferably a homomixer is used.

[0282] Stirring conditions are appropriately set. When a homomixer is used, the rotation speed is set to, for example, 500 rpm or more and, for example, 10,000 rpm or less. The stirring time is, for example, 0.5 minutes or more and, for example, 10 minutes or less, preferably 5 minutes or less. The stirring temperature is, for example, 50°C or more and, for example, 90°C or less.

[0283] Next, in the case where a portion of the monomer components was blended when preparing the above-mentioned mixed solution, the remaining portion of the monomer components is blended into this mixed solution.

[0284] Next, a polymerization initiator is added to this mixture.

[0285] Examples of the polymerization initiator include azo compounds such as azobisisobutylamidine dihydrochloride and azobisisobutyronitrile; water-soluble polymerization initiators such as persulfates, for example, potassium persulfate and ammonium persulfate; and oil-soluble polymerization initiators such as organic peroxides, for example, benzoyl peroxide, di-t-butyl peroxide, lauryl peroxide, cumene hydroperoxide, t-butyl peroxypivalate and diisopropyl peroxydicarbonate. Preferably, the polymerization initiator is an azo compound, and more preferably, azobisisobutyronitrile.

[0286] The mixing ratio of the polymerization initiator relative to 100 parts by mass of the monomer component is, for example, 0.01 parts by mass or more and, for example, 10 parts by mass or less.

[0287] If necessary, a chain transfer agent can be added to this mixture.

[0288] Examples of chain transfer agents include mercaptan group-containing compounds such as lauryl mercaptan, thioglycol, and thioglycerol (particularly alkyl mercaptans (e.g., having 1 to 30 carbon atoms)), inorganic salts such as sodium hypophosphite and sodium hydrogen sulfite, and preferably lauryl mercaptan.

[0289] The mixing ratio of the chain transfer agent relative to 100 parts by mass of the monomer component is, for example, 0.01 parts by mass or more and, for example, 10 parts by mass or less.

[0290] Then, this mixed liquid is heated to polymerize the monomer components.

[0291] The heating conditions include a heating temperature of, for example, 40° C. or higher and, for example, 80° C. or lower, and a heating time of, for example, 1 hour or longer and, for example, 6 hours or shorter.

[0292] This yields an emulsion of the non-fluorine-containing water-repellent compound, and a dispersion of the water-repellent composition containing the polyurethane resin compound, the non-fluorine-containing water-repellent compound (emulsion), the surfactant, and the liquid medium.

[0293] In the first method, the monomer components constituting the non-fluorine-containing water-repellent compound are polymerized in the presence of a polyurethane resin compound, a surfactant, and a liquid medium. Alternatively, the polyurethane resin compound can be blended after polymerizing the monomer components in the presence of a surfactant and a liquid medium (second method).

[0294] Alternatively, a non-fluorine-containing water-repellent compound can be prepared by polymerizing the monomer components first, and then the resulting non-fluorine-containing water-repellent compound can be blended with a polyurethane resin compound, a surfactant, and a liquid medium (third method).

[0295] In the third method, examples of the polymerization method include solution polymerization, suspension polymerization, and emulsion polymerization.

[0296] When solution polymerization is employed, the monomer components are dissolved in an organic solvent in the presence of the above-mentioned polymerization initiator, and after replacing the atmosphere with nitrogen, the mixture is heated with stirring.

[0297] The mixing ratio of the polymerization initiator relative to 100 parts by mass of the monomer component is, for example, 0.01 parts by mass or more, and for example, 20 parts by mass or less, preferably 10 parts by mass or less.

[0298] Examples of the organic solvent include the solvents listed above as the liquid medium.

[0299] The mixing ratio of the organic solvent relative to 100 parts by mass of the monomer component is, for example, 10 parts by mass or more, preferably 50 parts by mass or more, and for example, 2000 parts by mass or less, preferably 1000 parts by mass or less.

[0300] As for the heating conditions, the heating temperature is, for example, 30° C. or higher and, for example, 120° C. or lower, and the heating time is, for example, 1 hour or higher and, for example, 10 hours or lower.

[0301] This results in a fluorine-free water-repellent compound.

[0302] After the non-fluorine-containing water-repellent compound is produced by solution polymerization, the organic solvent is removed, and the non-fluorine-containing water-repellent compound is blended with a surfactant and a liquid medium together with a polyurethane resin compound, thereby preparing an emulsion of the non-fluorine-containing water-repellent compound.

[0303] Of the above-mentioned methods for producing the water repellent composition, the first method is preferably employed from the viewpoint of improving the water repellency of the water repellent-treated object treated with this water repellent composition.

[0304] The water repellent composition contains a polyurethane resin compound including at least one selected from the group consisting of a first polyurethane resin compound, a second polyurethane resin compound, and a third polyurethane resin compound, and a non-fluorine-containing water repellent compound.

[0305] Therefore, the water repellency of the water-repellent treated object can be improved by treating it with this water repellent composition.

[0306] The water repellent composition can be used as a water repellent treatment liquid diluted with water (ion-exchanged water), for example.

[0307] By impregnating a textile product with such a water-repellent treatment liquid, water repellency can be imparted to the textile product.

[0308] In other words, the textile product is treated with the water repellent composition.

[0309] Examples of fibers include natural fibers such as cotton or wool, chemical fibers such as viscose rayon and leocell, and synthetic fibers such as polyester, polyamide, acrylic, and polyurethane fibers. Textile products are products made from the above fibers, and examples include fabrics (woven fabrics, knitted fabrics, and nonwoven fabrics).

[0310] This textile product has been treated with the water repellent composition and therefore has excellent water repellency.

[0311] In the above description, textile products are treated to be water repellent, but the materials to be treated with the water repellent composition are not particularly limited, and examples thereof include paper, stone, glass, metal, cement, etc. [Example]

[0312] Specific numerical values ​​of blending ratios (content ratios), physical property values, parameters, etc. used in the following description can be replaced with the corresponding upper limit values ​​(numeric values ​​defined as "not more than" or "less than") or lower limit values ​​(numeric values ​​defined as "not less than" or "exceeding") of blending ratios (content ratios), physical property values, parameters, etc. described in the above "Description of the Invention." Furthermore, unless otherwise specified in the following description, "parts" and "%" are based on mass. 1. Preparation of the first aliphatic polyisocyanate derivative Synthesis Example 1 (Isocyanurate derivative of hexamethylene diisocyanate) In a reactor equipped with a thermometer, stirrer, nitrogen inlet, and condenser, 500 parts by mass of 1,6-hexamethylene diisocyanate (HDI, manufactured by Mitsui Chemicals, Inc., trade name: Takenate 700), 0.25 parts by mass of 2,6-di(tert-butyl)-4-methylphenol (also known as dibutylhydroxytoluene, BHT, a hindered phenol-based antioxidant), and 0.25 parts by mass of tetraphenyl dipropylene glycol diphosphite (organic phosphite ester, cocatalyst) were mixed under a nitrogen atmosphere. 10.7 parts by mass of 1,3-butanediol was then added to the mixture, and nitrogen was introduced into the liquid phase for 1 hour. The mixture was then heated to 80°C and reacted for 3 hours, after which it was cooled to 60°C. 0.2 parts by mass of trimethyl-N-2-hydroxypropylammonium 2-ethylhexanoate (as an isocyanurate catalyst) was added and reacted for 1.5 hours. Next, 0.04 parts by mass of o-toluenesulfonamide was added to 100 parts by mass of HDI. The reaction mixture was then passed through a thin-film distillation apparatus (temperature 150°C, vacuum degree 93.3 Pa) and distilled until the amount of residual HDI monomer was 0.5% or less, yielding a first aliphatic polyisocyanate derivative (an isocyanurate derivative of hexamethylene diisocyanate). The resulting first aliphatic polyisocyanate derivative had an isocyanate group content of 20.9% and an average isocyanate functionality of 3.0. 2. Preparation of Polyurethane Resin Compound Production Example 1 (First Polyurethane Resin Compound) In a reactor equipped with a stirrer, a thermometer, a cooler, and a nitrogen gas inlet tube, 100.20 g of the first aliphatic polyisocyanate derivative of Synthesis Example 1 as the first aliphatic polyisocyanate derivative, 67.60 g of Kalcol 8098 (stearyl alcohol, manufactured by Kao Corporation) as the first long-chain active hydrogen compound, and 22.30 g of oleic alcohol were mixed and reacted in a nitrogen atmosphere at 110°C for 4 hours until the concentration of isocyanate groups reached 3.67%.

[0313] Next, the reaction solution was cooled to 80°C, and 9.90 g of N-methyldiethanolamine was added as a cationic active hydrogen compound, followed by reaction at 80°C for 1 hour.

[0314] Next, 50.00 g of methyl ethyl ketone was added as a solvent, and the mixture was reacted at 80° C. until disappearance of the isocyanate groups was confirmed by infrared absorption spectroscopy.

[0315] Next, 57.69 g of methyl ether ketone was added to the reaction liquid, and the temperature was raised to 80°C. The reaction liquid was mixed until completely dissolved, and then cooled to 75°C.

[0316] Thereafter, 18.96 g of acetic acid was added as an acid compound to neutralize the mixture.

[0317] Next, while the reaction solution was kept at 75°C, 800.0 g of ion-exchanged water heated to 70°C was gradually added to emulsify the solution (internal emulsification).

[0318] Next, the solvent was removed using an evaporator under reduced pressure with a water bath temperature of 60°C until the solid content concentration reached 20% by mass or more.

[0319] Next, the solid concentration excluding the acid compound (acetic acid) was adjusted with ion-exchanged water to 20% by mass, thereby obtaining an aqueous dispersion containing a first polyurethane resin compound.

[0320] Production Example 2 (Second Polyurethane Resin Compound) A 500 mL four-neck flask equipped with a stirrer, thermometer, and reflux condenser was charged with 116 g of sorbitan tristearate and 150 g of 4-methyl-2-pentanone (MIBK). To remove excess water vapor from the mixture, the temperature of the mixture was maintained at 70°C while stirring. The mixture was refluxed for 1 hour and then allowed to cool to 50°C. While continuing to stir, 30 g of Desmodur N-100 (a biuret derivative of hexamethylene diisocyanate, manufactured by Covestro) was added dropwise to the mixture using a dropping funnel. After the addition, one drop of dibutyltin dilaurate was added as a catalyst, and the mixture was allowed to react at 80°C for 1 hour. Next, 25 g of sorbitan monostearate was added, and the mixture was allowed to react for an additional 4 hours at 80°C.

[0321] The reaction mixture was then cooled to 60°C, and the collected mixture was slowly mixed with 60°C water containing an arbitrary amount of cationic emulsifier and polyoxyethylene alkyl ether. The mixture was stirred at 6000 rpm for 1 minute using a homomixer, and then emulsified and dispersed with ultrasound for 15 minutes. The solvent (MIBK) was then removed under reduced pressure, and pure water was added to adjust the concentration, yielding an aqueous dispersion containing a second polyurethane resin compound with a solids concentration of 20%.

[0322] Production Example 3 (Third Polyurethane Resin Compound) A 500 mL four-neck flask equipped with a stirrer, thermometer, and reflux condenser was charged with 150 g of methyl ethyl ketone (MEK) and 51 g of stearyl alcohol. To remove excess water vapor from the mixture, the mixture was stirred and refluxed for 1 hour while maintaining the temperature at 70°C, and then allowed to cool to 50°C. 30 g of Desmodur N3200A (a biuret derivative of hexamethylene diisocyanate, manufactured by Covestro) was added to the mixture, and the mixture was further reacted at 80°C for 4 hours.

[0323] After cooling to 60°C, the reaction solution was recovered and slowly mixed with water containing an arbitrary amount of polyoxyethylene alkyl ether at 60°C. The mixture was stirred at 6000 rpm for 1 minute using a homomixer, and then emulsified and dispersed using ultrasound for 15 minutes.

[0324] Next, the solvent (MEK) was removed under reduced pressure, and then pure water was added to adjust the concentration, to obtain an aqueous dispersion containing a third polyurethane resin compound with a solids concentration of 20%. 3. Preparation of a dispersion containing a non-fluorinated water-repellent compound, a surfactant, and a liquid medium Manufacturing Example 4 A 500 ml plastic container was charged with 30 g of a water-soluble glycol solvent and 120 g of pure water as the liquid medium, 40 g of stearyl acrylate as the long-chain aliphatic hydrocarbon group-containing (meth)acrylate, 2 g of sorbitan fatty acid ester as the surfactant, and 2 g of a cationic emulsifier and 6 g of polyoxyethylene alkyl ether as the emulsifier, and the mixture was heated to 80°C, stirred at 2000 rpm for 1 minute with a homomixer, and then emulsified and dispersed with ultrasound for 15 minutes.

[0325] Next, this mixture was transferred to a 500 ml autoclave, and after purging with nitrogen, 0.2 g of lauryl mercaptan as a chain transfer agent and 20 g of vinyl chloride as a non-fluorine-containing copolymerizable monomer were added. Furthermore, 1 g of an azo group-containing water-soluble initiator was added as a polymerization initiator, and the mixture was heated to 60°C and reacted for 4 hours to obtain an aqueous dispersion of a polymer (non-fluorine-containing water-repellent compound). This dispersion was further diluted with pure water to prepare an aqueous dispersion of a non-fluorine-containing water-repellent compound with a solids concentration of 30% (more specifically, a dispersion containing a non-fluorine-containing water-repellent compound, a surfactant, and a liquid medium).

[0326] Manufacturing Examples 5 to 7 A dispersion containing a non-fluorine-containing water-repellent compound, a surfactant, and a liquid medium was prepared in the same manner as in Production Example 4, except that the formulation was changed according to Table 1. 4. Preparation of Silicone Polymer Manufacturing Example 8 A 200 mL four-neck flask equipped with a stirrer, thermometer, and reflux condenser was charged with 12 g of methyl hydrogen silicone oil (SiH:SiCH molar ratio = 50:50 as measured by 1H NMR) and 0.02 g of platinum catalyst. Next, 36 g of 1-hexacosene was charged to the dropping funnel, and while maintaining the temperature at 70°C, 1-hexacosene was added dropwise from the dropping funnel. After the addition was completed, the reaction was continued for an additional 3 hours at 70°C. The disappearance of the SiH peak was confirmed by infrared spectroscopy (IR), yielding 47 g of solid silicone polymer.

[0327] Next, 28 g of silicone polymer, 5.6 g of water-soluble glycol solvent, 60 g of pure water, 1.7 g of sorbitan fatty acid ester, 0.7 g of polyoxyethylene alkyl ether, and 0.6 g of cationic emulsifier were placed in a 250 ml glass container, heated to 75 ° C, stirred at 2000 rpm for 1 minute with a homomixer, and then ultrasonically emulsified and dispersed for 10 minutes to obtain an aqueous dispersion of silicone polymer. Then, pure water was added to prepare an aqueous dispersion of silicone polymer with a solids concentration of 30 mass %. 5. Wax Preparation Manufacturing Example 9 A pressure reactor was charged with 150 g of paraffin wax (melting point 75°C), 350 g of pure water, 4.5 g of polyoxyethylene alkyl ether, and 3 g of sorbitan fatty acid ester, sealed, and heated to 110-120°C with stirring. After that, high-pressure emulsification was carried out for 30 minutes under high pressure to prepare a water dispersion of wax. Pure water was then added to prepare a water dispersion of wax with a solids content of 30%. 6. Water repellent composition <Preparation of water repellent composition by the second method> Example 1 A water repellent composition was prepared by mixing 2.5 g of the polyurethane composition of Production Example 1 (solid content concentration: 20% by mass) and 31.7 g of the dispersion containing the non-fluorine-containing water repellent compound, surfactant, and liquid medium of Production Example 4 (solid content concentration: 30% by mass).

[0328] Example 2 Example 5, Comparative Examples 18 to 27, Example 16 to Examples 30, 35 and 36 Water repellent compositions were prepared in the same manner as in Example 1, except that the formulation was changed according to Tables 2 to 5.

[0329] Tables 2 to 5 show the blending ratio (mass %) of the effective amount of each component (polyurethane composition, non-fluorine-containing water-repellent compound, silicone polymer, wax, blocked isocyanate compound) relative to the total amount of the polyurethane composition, non-fluorine-containing water-repellent compound, silicone polymer, wax, and blocked isocyanate compound.

[0330] In addition, in Tables 2 to 5, the stearyl group-containing amide acrylate is stearic acid amide ethyl acrylate.

[0331] In addition, in Tables 2 to 5, the polyoxyethylene alkylphenol is Ramtel PD-420 manufactured by Kao Corporation.

[0332] In addition, in Tables 2 to 5, the dendrimer-based water repellent agent is specifically Ecoplus (manufactured by Rudolph).

[0333] In addition, in Tables 2 to 5, the blocked isocyanate composition is specifically a urethane compound having 3,5-dimethylpyrazole as a blocking agent. <Preparation of water repellent composition by method 1> Example 31 A 500ml plastic container was charged with 25.5g of water-soluble glycol solvent as the liquid medium, 113g of pure water, 34g of stearyl acrylate as a long-chain aliphatic hydrocarbon group-containing (meth)acrylate, 1.7g of sorbitan fatty acid ester as a surfactant, 1.7g of cationic emulsifier and 5.1g of polyoxyethylene alkyl ether as an emulsifier, 11g of the silicone polymer of Production Example 8 as a silicone polymer, and 28g of the aqueous dispersion of the first polyurethane composition of Production Example 1 (solid content concentration 20% by mass) as a polyurethane composition, heated to 80 ° C., stirred at 2000 rpm for 1 minute with a homomixer, and then ultrasonically emulsified and dispersed for 15 minutes. This dispersion was transferred to a 500ml autoclave, and after nitrogen substitution, 0.17g of lauryl mercaptan as a chain transfer agent and 17g of vinyl chloride as a non-fluorine copolymerizable monomer were charged. Furthermore, 0.85 g of an azo group-containing water-soluble initiator was added as a polymerization initiator, and the mixture was heated to 60°C and reacted for 4 hours to prepare an aqueous dispersion of a water repellent composition. Pure water was then added to prepare an aqueous dispersion of a water repellent composition with a solids content of 30%.

[0334] Table 4 shows the blending ratio (mass %) of the effective amount of each component (polyurethane composition, non-fluorine-containing water-repellent compound, and silicone polymer) relative to the polyurethane composition, non-fluorine-containing water-repellent compound, and silicone polymer in Example 31.

[0335] Examples 32 to 34 A water repellent composition was prepared in the same manner as in Example 31, except that the formulation was changed according to Table 6.

[0336] Table 4 shows the blending ratio (mass %) of the effective amount of each component (polyurethane composition, non-fluorine-containing water-repellent compound, and silicone polymer) relative to the polyurethane composition, non-fluorine-containing water-repellent compound, and silicone polymer for Examples 32 to 34. <Comparative Example> Comparative Examples 1 to 17 Water repellent compositions were prepared in the same manner as in Example 1, except that the formulation was changed according to Tables 4 and 5. 7. Evaluation (average number of isocyanate functional groups) The average number of isocyanate functional groups of the aliphatic polyisocyanate derivative in each synthesis example was calculated from the isocyanate group concentration A, solid content concentration B, and number average molecular weight C measured by gel permeation chromatography using the following apparatus and conditions, according to the following formula (6):

[0337] Average number of isocyanate functional groups = A / B × C / 42.02 (6) (In the formula, A represents the isocyanate group concentration of the aliphatic polyisocyanate derivative, B represents the solid content concentration, and C represents the number average molecular weight.) (Measurement conditions for number average molecular weight) Device: HLC-8220GPC (Tosoh) Columns: TSKgel G1000HXL, TSKgel G2000HXL, and TSKgel G3000HXL (manufactured by Tosoh) connected in series. Detector: differential refractometer Injection volume: 100μL Eluent: tetrahydrofuran Flow rate: 0.8mL / min Temperature: 40℃ Calibration curve: Standard polyethylene oxide in the range of 106 to 22450 (manufactured by Tosoh, product name: TSK Standard Polyethylene Oxide) (Water repellency evaluation) <Preparing the test cloth> The water repellent composition of each Example and Comparative Example was diluted with tap water to prepare 1000 g of a test liquid having a solid content concentration of 1.0 mass %.

[0338] Next, test fabrics (urethane / polyester blended fabric, urethane / nylon blended fabric, polyester fabric, and nylon fabric) were impregnated with this test liquid 1, and then passed through a mangle. The test fabrics were then passed through a pin tenter at 160°C for 1 minute, dried, and cured. <Water repellency evaluation using spray method> The water repellency of each of the test cloths described above was evaluated according to the spray method of JIS-L-1092 (AATCC-22).

[0339] The water repellency was evaluated according to the following criteria. The higher the score, the better the water repellency. The results are shown in Tables 2 to 5. 100 No wetting or water droplets were observed on the surface. 90 The surface did not wet, but small water droplets were observed to adhere. Wetting was observed on small individual water droplets on the surface. 70 Half of the surface showed wetting, with small individual wettings observed penetrating the fabric. 50 Wetting was observed over the entire surface. 0 Wetting was observed on the entire front and back surfaces. <Bundesmann test> For each of the test fabrics described above, rain was applied at a rate of 80 cc / min, at a temperature of 20°C, and for 1 minute according to the Bundesmann test method described in JIS-L-1092(C), and the amount of water leakage (mL) was measured. The amount of water leakage refers to the amount of water (mL) that penetrated the surface of the fabric during the Bundesmann test. The results are shown in Tables 2 to 5. <Washing durability> The water repellency of each of the test cloths described above was evaluated after washing 20 times and then drying in a tumbler (at 60°C for 30 minutes) in accordance with JIS L-0217 103. The results are shown in Tables 2 to 5.

[0340] [Table 1]

[0341] [Table 2]

[0342] [Table 3]

[0343] [Table 4]

[0344] [Table 5]

[0345] [Table 6]

[0346] The above invention is provided as an exemplary embodiment of the present invention, but this is merely an example and should not be interpreted as limiting. Modifications of the present invention that are obvious to those skilled in the art are intended to be included in the scope of the following claims. [Industrial Applicability]

[0347] The water repellent composition and the method for producing the water repellent composition of the present invention can be used in various industrial products, for example, can be suitably used as a surface treatment agent. The textile product of the present invention can be suitably used in the production of various industrial products.

Claims

1. The composition includes a polyurethane resin compound, a non-fluorine-containing water-repellent compound, a surfactant, and a liquid medium; The polyurethane resin compound is A water repellent composition comprising the following (A) first polyurethane resin compound: (A) a first aliphatic polyisocyanate derivative having an average number of isocyanate groups of 2 or more; a first long-chain active hydrogen compound having both a hydrocarbon group and an active hydrogen group and having from 12 to 30 carbon atoms; a cationic active hydrogen compound having both an active hydrogen group and a cationic group; a first polyurethane resin compound that is a reaction product of a cationic group and a salt-forming acid compound, the first polyurethane resin compound is self-emulsifying; The first polyurethane resin compound has a hydrocarbon group concentration of 30% or more and 85% or less.

2. 2. The water repellent composition according to claim 1, wherein the non-fluorinated water repellent compound is blended in an amount of 0.1 parts by mass or more and 99 parts by mass or less relative to 100 parts by mass of the total amount of the polyurethane resin compound and the non-fluorinated water repellent compound.

3. 2. The water repellent composition according to claim 1, wherein the non-fluorinated water repellent compound is a polymer containing a structural unit derived from a long-chain aliphatic hydrocarbon group-containing (meth)acrylate represented by the following formula (1) and / or an amide group-containing monomer represented by the following formula (2): 【Chemistry 1】 (In the above formula (1), R １ represents a hydrogen atom or a methyl group, and R ２ represents a linear or branched long-chain aliphatic hydrocarbon group having 18 to 30 carbon atoms. 【Chemistry 2】 (In the above formula (2), R ３ represents an organic residue having an ethylenically unsaturated double bond group, and R ４ represents a monovalent hydrocarbon group having 7 to 30 carbon atoms, and R ５ represents a divalent hydrocarbon group having 1 to 5 carbon atoms.

4. 4. The water repellent composition according to claim 3, wherein the non-fluorine-containing water repellent compound is a polymer containing a structural unit derived from a reactive emulsifier.

5. The water repellent composition according to claim 4, wherein the reactive emulsifier is represented by the following formula (3): 【Transformation 3】 (In the above formula (3), R １０ represents an organic residue having an ethylenically unsaturated double bond group having from 12 to 20 carbon atoms, R １１ represents an oxyalkylene group having 2 to 10 carbon atoms.

6. 2. The water repellent composition according to claim 1, wherein the non-fluorine-containing water repellent compound is a dendrimer-based water repellent.

7. 2. The water repellent composition according to claim 1, comprising at least one selected from the group consisting of a blocked isocyanate compound, a silicone polymer, and a wax.

8. The water repellent composition of claim 1, wherein the first aliphatic polyisocyanate derivative comprises an isocyanurate derivative of an aliphatic polyisocyanate.

9. In the cationic active hydrogen compound of the first polyurethane resin compound, the cationic group is a tertiary amino group, the active hydrogen group is a hydroxyl group, 2. The water repellent composition according to claim 1, wherein the cationic active hydrogen compound has two or more hydroxyl groups per molecule.

10. A method for producing the water repellent composition according to claim 3, comprising: a method for producing a water repellent composition, the method comprising polymerizing the monomer component in the presence of the polyurethane resin compound, the surfactant, and the liquid medium to produce the fluorine-free water repellent compound.

11. A textile product which has been treated with the water repellent composition according to claim 1 to be water repellent.

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