JP2015151480A - Water-soluble surfactant composition and ink composition in which the surfactant composition is compounded - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water-soluble surfactant composition that gives excellent dispersibility, wettability, and permeability when compounded in an ink, that has solubility with water, that responds to high-speed printing or high-speed coating, and that is environmentally compliant.SOLUTION: A surfactant composition is provided, which comprises (A) a polyether-modified silicone represented by average composition formula (I), (B1) water, and (C1) a water-soluble organic solvent. In formula (I), R represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms; and n is an integer of 6 to 20.

Description

  The present invention relates to a water-soluble surfactant composition, and in particular, exhibits excellent wettability and penetrability due to low dynamic surface tension and contact angle when blended in an ink. More particularly, the present invention relates to a water-soluble surfactant composition that can be applied to industrial processes and that is compatible with recent environmental problems, and an ink composition containing the composition.

  In recent years, in the printing industry, water-based technology is being advanced due to environmental problems. However, in the case of water-based systems, the drying speed is slower and the production speed is slower than that of solvent-based systems. Therefore, there is no choice but to cope with higher speeds that are associated with improved productivity. Ink for high-speed printing and high-speed coating There is a demand for improved performance.

  Against this background, in the ink and water-based paint industries, there is a need for a surfactant that imparts excellent surface tension reducing ability and low contact angle in order to provide wetting, penetrability and dispersibility to a substrate. When selecting a surfactant, the static surface tension is excellent when the system is in a static state, and the dynamic surface tension is used at high speeds due to the need for speeding up printing due to the aforementioned productivity improvement. The indicators are becoming important.

  Conventionally, polyether-modified silicones have been considered useful as inks, paint wetting agents, dispersion aids and the like, as described in Patent Documents 1 to 4. However, the knowledge about the limitation of the number of Si and the number of moles of ethylene oxide added in the main chain of the conventional polyether-modified silicone structure is not sufficient, and in ink applications, the solubility of the aqueous ink solution is insufficient and the fluid properties are poor, In some cases, high-speed coating could not be performed, and ink characteristics could not be sufficiently effective.

JP 2003-253166 A Japanese Patent Laid-Open No. 2007-154021 JP 2011-046035 A JP2013-203910A

  The present invention was made to improve the above circumstances, and because it has a low dynamic surface tension and contact angle, it provides excellent wettability and permeability, and considers water solubility and environmental issues. It is an object of the present invention to provide a water-soluble surfactant composition and an ink composition that are compatible with high-speed printing and high-speed coating.

  As a result of intensive studies to achieve the above object, the present inventors have found that when a water-soluble surfactant composition containing a specific polyether-modified silicone surfactant is added to an ink, a low dynamic surface is obtained. Because it has tension and contact angle, it provides excellent wettability and permeability, has good solubility in water, can handle high-speed printing and high-speed coating, and is compatible with recent environmental problems. The present invention has been found and the present invention has been made.

（式（Ｉ）中、Ｒは水素原子又は炭素数１〜５のアルキル基であり、ｎは６〜２０の整数である。）
〔２〕
上記平均組成式（Ｉ）で表されるポリエーテル変性シリコーンの含有量が１〜９５質量％であり、（Ｂ１）水と（Ｃ１）水溶性有機溶剤の総量が５〜９９質量％である（但し、（Ａ）、（Ｂ１）、（Ｃ１）の合計量が１００質量％である）〔１〕記載の界面活性剤組成物。
〔３〕
〔１〕又は〔２〕記載の界面活性剤組成物に、更に（Ｄ）染料、有機顔料及び無機顔料から選ばれる少なくとも１種の着色料、（Ｂ２）水、（Ｃ２）水溶性有機溶剤を含有してなるインク組成物。
〔４〕
（Ａ）上記平均組成式（Ｉ）で表されるポリエーテル変性シリコーン：０．１〜５質量％、
（Ｂ）水：２５〜９７．９質量％、
（Ｃ）水溶性有機溶剤：１〜５０質量％、
（Ｄ）染料、有機顔料及び無機顔料から選ばれる少なくとも１種の着色料：１〜２０質量％
（ただし、（Ｂ）成分は（Ｂ１）成分と（Ｂ２）成分とからなり、（Ｃ）成分は（Ｃ１）成分と（Ｃ２）成分とからなる。）
を含有してなるインク組成物。
〔５〕
（Ｃ２）水溶性有機溶剤がエチレングリコール、ジエチレングリコール、ポリエチレングリコール、プロピレングリコール、グリセリン、トリエチレングリコール、ブチレングリコール、１，２，６−ヘキサントリオール、チオグリコール、ヘキシレングリコール、トリメチロールプロパン、尿素、２−ピロリドン、Ｎ−メチル−２−ピロリドン、ジエチレングリコールモノメチルエーテル、ジエチレングリコールモノエチルエーテル、ジエチレングリコールモノプロピルエーテル、ジエチレングリコールモノブチルエーテル、エチレングリコールモノメチルエーテル、エチレングリコールモノエチルエーテル、エチレングリコールモノプロピルエーテル、エチレングリコールモノブチルエーテルから選ばれる少なくとも１種である〔３〕又は〔４〕記載のインク組成物。 Accordingly, the present invention provides the following water-soluble surfactant composition and an ink composition containing the same.
[1]
(A) A surfactant composition containing a polyether-modified silicone represented by the following average composition formula (I), (B1) water, and (C1) a water-soluble organic solvent.

(In formula (I), R is a hydrogen atom or a C1-C5 alkyl group, and n is an integer of 6-20.)
[2]
The content of the polyether-modified silicone represented by the average composition formula (I) is 1 to 95% by mass, and the total amount of (B1) water and (C1) water-soluble organic solvent is 5 to 99% by mass ( (However, the total amount of (A), (B1), and (C1) is 100% by mass) [1].
[3]
To the surfactant composition according to [1] or [2], (D) at least one colorant selected from a dye, an organic pigment and an inorganic pigment, (B2) water, and (C2) a water-soluble organic solvent. An ink composition comprising.
[4]
(A) Polyether-modified silicone represented by the above average composition formula (I): 0.1 to 5% by mass,
(B) Water: 25-97.9% by mass,
(C) Water-soluble organic solvent: 1 to 50% by mass,
(D) At least one colorant selected from dyes, organic pigments and inorganic pigments: 1 to 20% by mass
(However, (B) component consists of (B1) component and (B2) component, and (C) component consists of (C1) component and (C2) component.)
An ink composition comprising:
[5]
(C2) The water-soluble organic solvent is ethylene glycol, diethylene glycol, polyethylene glycol, propylene glycol, glycerin, triethylene glycol, butylene glycol, 1,2,6-hexanetriol, thioglycol, hexylene glycol, trimethylolpropane, urea, 2-pyrrolidone, N-methyl-2-pyrrolidone, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monopropyl ether, diethylene glycol monobutyl ether, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol mono [3] which is at least one selected from butyl ether [4] The ink composition.

  Since the water-soluble surfactant composition of the present invention has a low contact angle immediately after dropping and a low dynamic surface tension, it exhibits wettability, penetrability and antifoaming property when added to ink. In addition, it is an excellent surfactant composition that can cope with high-speed printing and high-speed coating, and is also suitable for environmental problems. Due to this characteristic, the water-soluble surfactant composition of the present invention is extremely advantageous practically.

  The water-soluble surfactant composition of the present invention contains (A) a specific polyether-modified silicone, (B1) water, and (C1) a water-soluble organic solvent.

Here, the polyether-modified silicone of component (A) is represented by the following average composition formula (I).

In the formula (I), R is a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, preferably a hydrogen atom or a methyl group. n is an integer of 6 to 20, preferably 6 to 15, and more preferably an integer of 7 to 10. If n is 5 or less, the aqueous solution is poor, the wettability to the base material when ink is applied, ink unevenness, etc. occur, and if it exceeds 20, the surface tension when using ink increases, and the base material It is not preferable because the wettability is increased. Further, when R is an alkyl group having 6 or more carbon atoms, water solubility is deteriorated, viscosity characteristics are improved, and ink coating properties are deteriorated, which is not preferable.
The following are mentioned as (A) polyether modified silicone used for this invention.

  The blending ratio of the component (A) used when preparing the water-soluble surfactant composition of the present invention is preferably 1 to 95% by mass, more preferably 5 to 90% by mass in 100% by mass of the composition. %. Similarly, when it is blended into the ink, if it is less than 1% by mass, bubbles are generated, causing bleeding at the time of printing, and if it exceeds 95% by mass, water solubility is deteriorated, causing bleeding at the time of printing. Therefore, it may not be preferable.

  The water-soluble surfactant composition of the present invention further contains (B1) water and (C1) a water-soluble organic solvent. Examples of the water-soluble organic solvent include ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, polyethylene glycol, propylene glycol, 1,3-propanediol, 1,4-butanediol, glycerin and the like. As long as the properties of the present water-soluble surfactant composition are not impaired, the total of the component (B1) and the component (C1) is 5 to 99% by mass, preferably 10%, in 100% by mass of the composition. It can be used in an amount of ˜95% by mass. In addition, content of (C1) component with respect to the whole composition is 5-90 mass%, Especially 10-80 mass% is preferable.

  The water-soluble surfactant composition of the present invention can be obtained, for example, by mixing the above components by a known mixing preparation method such as a propeller type stirrer. Moreover, about a solid component at normal temperature, it heats and mixes as needed.

  Here, the obtained water-soluble surfactant composition has a contact angle of 0.3 seconds after dropping of its 0.1% by weight aqueous solution, preferably 20 degrees or less, more preferably 5 degrees or less. Furthermore, the dynamic surface tension at 1 Hz and 10 Hz is preferably 40 mN / m or less, more preferably 20 to 35 mN / m.

  The contact angle is a value obtained by measuring a value after 0.3 seconds of dropping a 0.1% by mass aqueous solution using a contact angle meter CA-D type (manufactured by Kyowa Interface Science Co., Ltd.). The values of 1 Hz and 10 Hz of a 0.1 mass% aqueous solution were measured using a bubble pressure type dynamic surface tension meter Kurus BP-100 (manufactured by KRUSS).

  If the contact angle after 0.3 seconds of dropping of the 0.1% by weight aqueous solution of the obtained water-soluble surfactant composition exceeds 20 degrees, the repelling and absorbability will deteriorate after blending into the ink. Ink bleeding may occur. Similarly, when the dynamic surface tension at 1 Hz and 10 Hz of a 0.1% by weight aqueous solution exceeds 40 mN / m, printing is possible with a printing machine or coating machine even if no repellency is observed during brush coating or bar coater coating. In some cases, bleeding may occur due to repelling or insufficient penetration.

  When an ink composition (hereinafter sometimes referred to simply as ink) is produced using the water-soluble surfactant composition of the present invention, the polyether-modified silicone as the component (A) is preferably 0 with respect to the total amount of the ink. It is desirable to use it in an addition amount of 0.05 to 10% by mass, more preferably 0.05 to 5% by mass.

  When the water-soluble surfactant composition of the present invention is used in an ink, in addition to the water-soluble surfactant composition of the present invention, coloring agents such as dyes or pigments, solvents such as water and solvents, resins, and other additives An agent can optionally be included.

  As the colorant, a dye, an organic pigment, or an inorganic pigment can be suitably used. For example, as dyes, in addition to those classified as acid dyes, direct dyes, reactive dyes, vat dyes, sulfur dyes or food dyes in the color index, colorings classified as oil-soluble dyes and basic dyes An agent can also be used. In addition, as a pigment for black ink, carbon black (CI Pigment Black 7) such as furnace black (color black), lamp black, acetylene black, channel black, and the like, Raven) 7000, Ray Van 5750, Ray Van 5250, Ray Van 5000, Ray Van 3500, Ray Van 2000, Ray Van 1500, Ray Van 1250, Ray Van 1200, Ray Van 1190ULTRA-II, Ray Van 1170, Ray Van 1255 (above, Colombia), Black Pearls (Black) Pearls L, Regal 400R, Regal 330R, Legal 660R, Moguul L, Monarch 700, Monak 800, Monak 880, Monak 900, Monak 1000, Monak 1100, Monak 1300, Monak 1400, Vulcan XC-72R (above, manufactured by Cabot Corporation), Color Black FW1, Color Black FW2, Color Black FW2V, Color Black FW18, Color Black FW200, Color Black S150, Color Black S160, Color Black S170, Printex 35, Printex 35, Printex V, Printex V, Printex 140U, Printex 140V, Special Black ( Special Black) 6, Special Black 5, Special Black 4A, Special Black 4 (above, manufactured by Degussa), No. 25, no. 33, no. 40, no. 47, no. 52, no. 900, no. 2300, MCF-88, MA600, MA7, MA8, MA100 (Mitsubishi Chemical Co., Ltd.), etc., or metal such as copper oxide, iron oxide (CI Pigment Black 11), titanium oxide, aniline black And organic pigments such as (CI Pigment Black 1). For color inks, C.I. I. Pigment Yellow 1 (Fast Yellow G), 3, 12 (Disazo Yellow AAA), 13, 14, 17, 24, 34, 35, 37, 42 (Yellow Iron Oxide), 53, 55, 74, 81, 83 (Disazo Yellow HR), 93, 94, 95, 97, 98, 100, 101, 104, 108, 109, 110, 117, 120, 128, 138, 153, 180, C.I. I. Pigment Red 1, 2, 3, 5, 17, 22 (Brilliant First Scarlet), 23, 31, 38, 48: 2 (Permanent Red 2B (Ba)), 48: 2 (Permanent Red 2B (Ca)), 48 : 3 (Permanent Red 2B (Sr)), 48: 4 (Permanent Red 2B (Mn)), 49: 1, 52: 2, 53: 1, 57: 1 (Brilliant Carmine 6B), 60: 1, 63: 1, 63: 2, 64: 1, 81 (Rhodamine 6G rake), 83, 88, 101 (Bengara), 104, 105, 106, 108 (Cadmium red), 112, 114, 122 (Quinacridone magenta), 123, 146, 149, 166, 168, 170, 172, 177, 178, 179, 185, 190, 193, 202, 206, 09,219, C. I. Pigment violet 19, 23, C.I. I. Pigment orange 36, C.I. I. Pigment Blue 1, 2, 15 (phthalocyanine blue R), 15: 1, 15: 2, 15: 3 (phthalocyanine blue G), 15: 4, 15: 6 (phthalocyanine blue E), 16, 17: 1, 56 , 60, 63, C.I. I. Pigment Green 1, 4, 7, 8, 10, 17, 18, 36, etc. can be used.

  The amount of the colorant used in preparing the ink is not particularly limited, but is preferably 0.1 to 15% by mass, more preferably 2 to 10% by mass in the ink.

  The water-soluble surfactant composition of the present invention contains (B1) water and (C1) a water-soluble organic solvent, but (B2) water and (C2) a water-soluble organic solvent are further added during ink adjustment. You can also (C2) Examples of water-soluble organic solvents include ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol, polyethylene glycol having a molecular weight of 2,000 or less, 1,3-propylene glycol, isopropylene glycol, Glycols such as isobutylene glycol, 1,4-butanediol, 1,3-butanediol, 1,5-pentanediol, 1,6-hexanediol, glycerin, mesoerythritol, pentaerythritol, thioglycol, hexylene glycol, C1-C4 alkyl alcohols, glycol ethers, formamide, acetamide, dimethyl sulfoxide, sorbit, sorbitan, acetin, diacetin, triacetate , Sulfolane, polyhydric alcohols such as 1,2,6-hexanetriol, trimethylolpropane, urea, 2-pyrrolidone, N-methyl-2-pyrrolidone, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monopropyl ether , Diethylene glycol monobutyl ether, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, etc., and one or more of these can be appropriately selected and used.

  The amount of (B2) water and (C2) water-soluble organic solvent used in preparing the ink is not particularly limited, but in combination with the amount contained in the water-soluble surfactant of the present invention, (B) water + (C) 50-97.9 mass% is preferable with a water-soluble organic solvent, More preferably, it is 60-95 mass%. Here, water in the total amount of ink is (B) {(B) = (B1) + (B2)}, and water-soluble organic solvent in the total amount of ink is (C) {(C) = (C1) + (C2)}. And In this case, the amount of the component (C) is preferably 1 to 50% by mass, particularly 5 to 40% by mass with respect to the ink composition.

Furthermore, a resin can be mix | blended with an ink composition. As the resin, the hydrophobic group of the substance forming the polymer is preferably at least one selected from an alkyl group, a cycloalkyl group, or an aryl group. The hydrophilic group is preferably at least a carboxyl group, a sulfonic acid group, a hydroxyl group, an amino group, an amide group, or a base thereof.
As specific examples of the substances forming these dispersion polymers, monomers and oligomers having an acryloyl group, methacryloyl group, vinyl group or aryl group having a double bond can be used. For example, styrene, tetrahydrofurfuryl acrylate, butyl methacrylate, (α, 2,3 or 4) -alkylstyrene, (α, 2,3 or 4) -alkoxystyrene, 3,4-dimethylstyrene, α-phenylstyrene, Divinylbenzene, vinylnaphthalene, dimethylamino (meth) acrylate, dimethylaminoethyl (meth) acrylate, dimethylaminopropyl acrylamide, N, N-dimethylaminoethyl acrylate, acryloylmorpholine, N, N-dimethylacrylamide, N-isopropylacrylamide N, N-diethylacrylamide, methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, ethylhexyl (meth) acrylate, other alkyl (meth) acrylates Relate, methoxydiethylene glycol (meth) acrylate, ethoxy group, propoxy group, butoxy group diethylene glycol or polyethylene glycol (meth) acrylate, cyclohexyl (meth) acrylate, benzyl (meth) acrylate, phenoxyethyl (meth) acrylate, isobonyl (meth) ) Acrylate, hydroxyalkyl (meth) acrylate, other fluorine-containing, chlorine-containing, silicon-containing (meth) acrylate, (meth) acrylamide, maleic acid amide, (meth) acrylic acid, etc., in addition to a monofunctional cross-linked structure In the case (mono, di, tri, tetra, poly) ethylene glycol di (meth) acrylate, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, 1,8-octanedi (Meth) acrylates such as alcohol and 1,10-decanediol, trimethylolpropane tri (meth) acrylate, glycerin (di, tri) (meth) acrylate, di (meth) acrylate of ethylene oxide adducts of bisphenol A or F , Neopentyl glycol di (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol hexa (meth) acrylate, and other compounds having an acrylic group or a methacrylic group can be used.

  Although the usage-amount of resin at the time of preparing ink is not specifically limited, 0-30 mass% is preferable in an ink, More preferably, it is 0-20 mass%. In addition, when mix | blending, it is preferable to set it as 1 mass% or more.

As other additives, ultraviolet absorbers, antioxidants, pH adjusters, preservatives, viscosity adjusters, and the like can be appropriately blended. In addition to the above materials, these other additives can be blended in effective amounts as the balance in 100% by mass of the ink composition.
An ink having excellent characteristics can be obtained by dispersing and dissolving the water-soluble surfactant composition, colorant, solvent, resin, other additives, and the like of the present invention and mixing and stirring.
By adjusting the viscosity to 4 mPa · s or less (not including 0), the obtained ink has excellent printing characteristics.
Further, the ink can be further applied or printed on a substrate such as paper, plastic or ceramic by a known coating method such as a roll coater. In that case, it can be preferably applied at a speed of 100 to 500 m / min, and can be prepared as a recording medium.

  EXAMPLES Hereinafter, although an Example and a comparative example are shown and this invention is demonstrated concretely, this invention is not restrict | limited to the following Example. In addition, in the following example, a part and% show a mass part and the mass%, respectively.

[Example 1]
80 parts of (A-1) heated to 50 ° C. was put into a container equipped with a propeller-type stirrer, 10 parts of propylene glycol and 10 parts of water were gradually added, and stirred for 1 hour to obtain a surfactant composition. (Hereinafter, this is referred to as M-1).

[Examples 2 to 4, Comparative Examples 1 to 9]
In the same manner as in Example 1, surfactant compositions M-2 to M-13 were obtained with the composition shown in Table 1.

Each physical property was measured as follows. The results are shown in Table 2.
<Water solubility>
The appearance of the aqueous solution and the presence or absence of insoluble matter were confirmed.
○: The aqueous solution is transparent and no insoluble material is observed. Δ: The aqueous solution is cloudy but no insoluble material is observed. ×: Some insoluble materials are recognized.

<Dynamic surface tension>
The dynamic surface tension of 1 Hz and 10 Hz of a 0.1% aqueous solution of the surfactant composition was measured using a KRUSS bubble pressure type dynamic surface tension meter Cruz BP-100.

<Contact angle>
Using a contact angle meter CA-D type manufactured by Kyowa Interface Science Co., Ltd., a 0.1% aqueous solution of the surfactant composition, the contact angle after 0.3 seconds was measured on SUS-304 manufactured by Japan Test Panel Co., Ltd. .

[Ink formulation]
[Example 5]
As an ink, 5 parts of color black S170 (manufactured by Degussa) as a black pigment was gradually added to 70 parts of ion-exchanged water while stirring with a propeller-type stirrer, and then 1 part of surfactant composition M-1 and polyethylene. After adding 10 parts of glycol (molecular weight 200) and 15 parts of glycerin and stirring for 1 hour, a black ink composition (hereinafter referred to as “a-1”) was obtained.
Further, in place of the black pigment, a magenta pigment (CI Pigment Red 122), a cyan pigment (CI Pigment Blue 15: 3), and a yellow pigment (CI Pigment Yellow 74) are used. Magenta (M), cyan (C), and yellow (Y) inks were produced by the same method as described above.

[Examples 6-8, Comparative Examples 10-18]
In the same manner as in Example 5, black ink compositions A-2 to A-15 using surfactant compositions M-1 to M-13 were obtained.

[Example 9]
As an ink, 5 parts of color black S170 (Degussa) as a black pigment was gradually added to 70 parts of ion-exchanged water while stirring with a propeller-type stirrer, and then 0.12 part of surfactant composition M-1 was added. After adding 10 parts of polyethylene glycol (molecular weight 200) and 15 parts of glycerin and stirring for 1 hour, a black ink composition (hereinafter referred to as “i-5”) was obtained.
Further, in place of the black pigment, a magenta pigment (CI Pigment Red 122), a cyan pigment (CI Pigment Blue 15: 3), and a yellow pigment (CI Pigment Yellow 74) are used. Magenta (M), cyan (C), and yellow (Y) inks were produced by the same method as described above.

[Example 10]
As an ink, 5 parts of color black S170 (Degussa), which is a black pigment, was gradually added to 70 parts of ion-exchanged water while stirring with a propeller-type stirrer, and then 5 parts of surfactant composition M-1 and polyethylene. After adding 10 parts of glycol (molecular weight 200) and 15 parts of glycerin and stirring for 1 hour, a black ink composition (hereinafter referred to as “i-6”) was obtained.
Further, in place of the black pigment, a magenta pigment (CI Pigment Red 122), a cyan pigment (CI Pigment Blue 15: 3), and a yellow pigment (CI Pigment Yellow 74) are used. Magenta (M), cyan (C), and yellow (Y) inks were produced by the same method as described above.

Each characteristic was measured as follows. The results are also shown in Tables 3 and 4.
[Evaluation of ink]
1) Print density Regarding the dots printed on plain paper with Seiko Epson PX-045A using black ink, the print density was measured with a Sakura Microdensitometer PDM-5 (manufactured by Sakura Seiki Co., Ltd.). The printing density is preferably 0.99 to 1.10, and more preferably 1.01 to 1.10.

2) Dot diameter A PX-045A manufactured by Seiko Epson was printed on plain paper using black ink, enlarged 100 times, and the dot diameter was measured. The dot diameter is preferably 200 to 250 μm, and more preferably 220 to 240 μm.

3) Color density of printed image Black (B), magenta (M), cyan (C), and yellow (Y) are printed on plain paper with Seiko Epson PX-045A, and Macbeth densitometer RD-918 (Macbeth Co., Ltd.) Manufactured). The color density is preferably 1.35 to 2.00, more preferably 1.40 to 2.00.

4) Ink absorbability Black (B), magenta (M), cyan (C), and yellow (Y) are simultaneously ejected onto the same area of plain paper with PX-045A manufactured by Seiko Epson, and rubbed with a paper presser plate after 1 second. Ink stains were measured.
○: No white portion of dirt △: Slightly dirty ×: Slightly dirty

5) Image uniformity The dot of the printed matter was enlarged and observed, and the leveling property of the printed matter was visually observed.
Evaluation criteria ○: Almost no difference in density △: Slight difference in concentration ×: Crescent mottled pattern in halftone dots

（式（Ｉ）中、Ｒは水素原子又は炭素数１〜５のアルキル基であり、ｎは６〜２０の整数である。）
〔２〕
上記平均組成式（Ｉ）で表されるポリエーテル変性シリコーンの含有量が１〜９５質量％であり、（Ｂ１）水と（Ｃ１）水溶性有機溶剤の総量が５〜９９質量％である（但し、（Ａ）、（Ｂ１）、（Ｃ１）の合計量が１００質量％である）〔１〕記載の界面活性剤組成物。
〔３〕
〔１〕又は〔２〕記載の界面活性剤組成物に、更に（Ｄ）染料、有機顔料及び無機顔料から選ばれる少なくとも１種の着色料、（Ｂ２）水、（Ｃ２）水溶性有機溶剤を含有してなるインク組成物。
〔４〕
（Ａ）上記平均組成式（Ｉ）で表されるポリエーテル変性シリコーン：０．０５〜１０質量％、
（Ｂ）水：２５〜９７．９質量％、
（Ｃ）水溶性有機溶剤：１〜５０質量％、
（Ｄ）染料、有機顔料及び無機顔料から選ばれる少なくとも１種の着色料：１〜２０質量％
（ただし、（Ｂ）成分は（Ｂ１）成分と（Ｂ２）成分とからなり、（Ｃ）成分は（Ｃ１）成分と（Ｃ２）成分とからなる。）
を含有してなるインク組成物。
〔５〕
（Ｃ２）水溶性有機溶剤がエチレングリコール、ジエチレングリコール、ポリエチレングリコール、プロピレングリコール、グリセリン、トリエチレングリコール、ブチレングリコール、１，２，６−ヘキサントリオール、チオグリコール、ヘキシレングリコール、トリメチロールプロパン、尿素、２−ピロリドン、Ｎ−メチル−２−ピロリドン、ジエチレングリコールモノメチルエーテル、ジエチレングリコールモノエチルエーテル、ジエチレングリコールモノプロピルエーテル、ジエチレングリコールモノブチルエーテル、エチレングリコールモノメチルエーテル、エチレングリコールモノエチルエーテル、エチレングリコールモノプロピルエーテル、エチレングリコールモノブチルエーテルから選ばれる少なくとも１種である〔３〕又は〔４〕記載のインク組成物。 Accordingly, the present invention provides the following water-soluble surfactant composition and an ink composition containing the same.
[1]
(A) A surfactant composition containing a polyether-modified silicone represented by the following average composition formula (I), (B1) water, and (C1) a water-soluble organic solvent.

(In formula (I), R is a hydrogen atom or a C1-C5 alkyl group, and n is an integer of 6-20.)
[2]
The content of the polyether-modified silicone represented by the average composition formula (I) is 1 to 95% by mass, and the total amount of (B1) water and (C1) water-soluble organic solvent is 5 to 99% by mass ( (However, the total amount of (A), (B1), and (C1) is 100% by mass) [1].
[3]
To the surfactant composition according to [1] or [2], (D) at least one colorant selected from a dye, an organic pigment and an inorganic pigment, (B2) water, and (C2) a water-soluble organic solvent. An ink composition comprising.
[4]
(A) Polyether-modified silicone represented by the above average composition formula (I): 0.05 to 10 % by mass,
(B) Water: 25-97.9% by mass,
(C) Water-soluble organic solvent: 1 to 50% by mass,
(D) At least one colorant selected from dyes, organic pigments and inorganic pigments: 1 to 20% by mass
(However, (B) component consists of (B1) component and (B2) component, and (C) component consists of (C1) component and (C2) component.)
An ink composition comprising:
[5]
(C2) The water-soluble organic solvent is ethylene glycol, diethylene glycol, polyethylene glycol, propylene glycol, glycerin, triethylene glycol, butylene glycol, 1,2,6-hexanetriol, thioglycol, hexylene glycol, trimethylolpropane, urea, 2-pyrrolidone, N-methyl-2-pyrrolidone, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monopropyl ether, diethylene glycol monobutyl ether, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol mono [3] which is at least one selected from butyl ether [4] The ink composition.

The ink composition using a water-soluble surfactant composition of the present invention when manufacturing (hereinafter, simply is referred ink), (A) component polyether-modified silicone is to the total amount of the ink 0. 05-10 wt%, good Mashiku 0.05-5 wt%, more preferably it is desirable to use in the addition amount of 0.1 to 5 mass%.

The amount of the colorant used in preparing the ink is not particularly limited, but is preferably 1 to 20 % by mass, more preferably 2 to 10% by mass in the ink.

Claims (5)

(A) A surfactant composition containing a polyether-modified silicone represented by the following average composition formula (I), (B1) water, and (C1) a water-soluble organic solvent.

(In formula (I), R is a hydrogen atom or a C1-C5 alkyl group, and n is an integer of 6-20.)   The content of the polyether-modified silicone represented by the average composition formula (I) is 1 to 95% by mass, and the total amount of (B1) water and (C1) water-soluble organic solvent is 5 to 99% by mass ( However, the surfactant composition according to claim 1, wherein the total amount of (A), (B1), and (C1) is 100% by mass.   The surfactant composition according to claim 1 or 2, further comprising (D) at least one colorant selected from a dye, an organic pigment and an inorganic pigment, (B2) water, and (C2) a water-soluble organic solvent. An ink composition. (A) Polyether-modified silicone represented by the above average composition formula (I): 0.1 to 5% by mass,
(B) Water: 25-97.9% by mass,
(C) Water-soluble organic solvent: 1 to 50% by mass,
(D) At least one colorant selected from dyes, organic pigments and inorganic pigments: 1 to 20% by mass
(However, (B) component consists of (B1) component and (B2) component, and (C) component consists of (C1) component and (C2) component.)
An ink composition comprising:   (C2) The water-soluble organic solvent is ethylene glycol, diethylene glycol, polyethylene glycol, propylene glycol, glycerin, triethylene glycol, butylene glycol, 1,2,6-hexanetriol, thioglycol, hexylene glycol, trimethylolpropane, urea, 2-pyrrolidone, N-methyl-2-pyrrolidone, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monopropyl ether, diethylene glycol monobutyl ether, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol mono 4. At least one selected from butyl ether The ink composition of the fourth aspect.