JP2010018718A - Water-based ink composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water-based ink composition for writing utensils represented by a highlighter pen and the like, that has improved dry suppression effect and writing performance. <P>SOLUTION: The water-based ink composition comprises (a) a block type alkylene oxide derivative shown by general formula (I), (b) a colorant and (c) water. In (I) Z-äO-[(AO)<SB>a</SB>-(EO)<SB>b</SB>]-R}<SB>2</SB>, Z indicates a residue group formed by eliminating a hydroxy group from a dimer diol, EO indicates an oxyethylene group, and AO indicates a 3-4C oxyalkylene group, wherein their modes of addition are block types, a and b are each an average number of added moles of the oxyalkylene group and the oxyethylene group, which satisfies 1≤2×a≤150 and 1≤2×b≤150, respectively, the proportion of the oxyethylene group to the sum total of the 3-4C oxyalkylene group and the oxyethylene group is 10-99 mass%, and Rs, which may be different or the same, are each a 1-4C hydrocarbon group. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a water-based ink composition, and particularly to an improvement of a drying inhibitor component.

2. Description of the Related Art Conventionally, liquid writing instruments such as markers and sign pens in which water-based or oil-based ink is infiltrated into a writing core are widely used.
However, in the case of water-based writing instruments, when the water content evaporates, for example, the dissolved matter or mixture in the ink concentrates, precipitates, and solidifies at the tip of the writing instrument and clogs, causing an increase in the viscosity of the ink. There was a problem. Therefore, water-soluble high-boiling organic solvents such as polyhydric alcohols such as ethylene glycol and glycerin are used as drying inhibitors. However, the water-soluble high-boiling organic solvent is generally a compound having a high viscosity. On the other hand, ink used for writing instruments and the like is ejected through a capillary such as a pen tip or an orifice. Therefore, there is a limit to the amount of the water-soluble organic solvent that can be used for the ink, and the use amount within the limit cannot sufficiently compensate for the evaporated water.

  Therefore, various water-based ink compositions have been proposed as solutions for the above problems. For example, a method of applying or impregnating a high boiling point solvent in advance to the pen tip of a writing core of a porous core material has been proposed (for example, Patent Document 1). However, in the state before writing, the high boiling point solvent is sufficiently present in the pen tip, so even if the drying inhibition effect of the pen tip is recognized to some extent, the high boiling point solvent flows out together with the ink after writing. There was a problem that the drying suppression effect could not be obtained.

  In addition, paraffin wax that precipitates on the pen tip surface to form a thin film is added to the ink (for example, Patent Document 2), a compound having an imidazolyl ring in the ink (for example, Patent Document 3), reduction Addition of maltooligosaccharide and / or reduced isomaltoligosaccharide (for example, Patent Document 4), addition of dimethyl sulfoxide (hereinafter referred to as DMSO) and urea, ethyleneurea (for example, Patent Document 5), metal ion blocking agent and reduction There are those to which saccharified starch is added (for example, Patent Document 6) and those to which a fluorosurfactant is added (for example, Patent Document 7). However, none of them has a sufficiently satisfactory drying suppression effect.

  There has also been a proposal of blending a polyalkylene oxide dialkyl ether derivative that is excellent in suppressing drying of the nib and writing properties, in particular, smoothness of writing (for example, Patent Document 8). However, this proposal does not always have a satisfactory effect on ink bleeding (water resistance).

Japanese Patent No. 2878585 Japanese Patent Publication No. 1-335028 JP-A-5-59316 WO00 / 29494 Japanese Patent No. 1543157 JP 2004-224892 A JP 60-84369 A JP 2007-106791 A

  The present invention has been made in view of the above-mentioned circumstances, and the object thereof is a water-based ink having an improved drying suppression effect in a water-based ink composition, and writability when used in a writing instrument, in particular, no blurring and blurring. It is to provide a composition.

  As a result of intensive studies in view of the above-mentioned problems, the inventors of the present invention had moderate drying resistance by blending an aqueous oxide composition with an alkylene oxide derivative having a specific structure together with a colorant and water. When this is used for a pen for writing instruments, drying of the pen tip is effectively suppressed even if the cap is removed from the main body and left for a long period of time, and the writing property, in particular, no blurring and blurring. As a result, the present invention has been completed.

That is, the water-based ink composition of the present invention comprises (a) a block-type alkylene oxide derivative represented by the following general formula (I), (b) a colorant, and (c) water.
(Chemical formula 2)
Z- {O-[(AO) _a- (EO) _b ] -R} ₂ (I)
(In the formula, Z is a residue obtained by removing a hydroxyl group from dimer diol, EO is an oxyethylene group, AO is an oxyalkylene group having 3 to 4 carbon atoms, and these addition forms are block-like. A and b) Are the average added moles of the oxyalkylene group and oxyethylene group, respectively, 1 ≦ 2 × a ≦ 150, 1 ≦ 2 × b ≦ 150, and the oxyalkylene group having 3 to 4 carbon atoms and the oxyethylene group (The ratio of the oxyethylene group to the total is 10 to 99% by mass. R is the same or different hydrocarbon group having 1 to 4 carbon atoms.)

  In the block-type alkylene oxide derivative represented by the formula (I), AO is preferably an oxybutylene group.

In the water-based ink composition, it is preferable that Z of the alkylene oxide derivative represented by the general formula (I) is a dimer diol residue having 24 to 48 carbon atoms.

Moreover, it is suitable that the compounding quantity of the said (a) block-type alkylene oxide derivative is 1-20 mass%.

  According to the present invention, in a water-based ink composition, a block type alkylene oxide derivative having a specific structure is blended with a colorant and water, and when this is used for a pen for a writing instrument, the cap is removed from the main body. Even if left for a long period of time, it is possible to obtain a water-based ink composition that is excellent in drying suppression effect and writing property, in particular, no blurring and blurring.

Hereinafter, preferred embodiments of the present invention will be described.
(A) Block-type alkylene oxide derivative The water-based ink composition according to the invention contains a block-type alkylene oxide / ethylene oxide-dimer diol ether having a specific structure represented by the following general formula (I).
Z- {O-[(AO) _a- (EO) _b ] -R} ₂ (I)
In the alkylene oxide derivative represented by the formula (I), Z is a residue obtained by removing a hydroxyl group from dimer diol, and EO is an oxyethylene group. AO is an oxyalkylene group having 3 to 4 carbon atoms, and examples thereof include an oxypropylene group, an oxybutylene group, an oxyisobutylene group, and an oxy t-butylene group. Preferably, it is an oxypropylene group, an oxybutylene group, and more preferably an oxybutylene group. These additional forms are block-shaped.

  a and b are the average added moles of the oxyalkylene group and oxyethylene group, respectively, and are 1 ≦ 2 × a ≦ 150 and 1 ≦ 2 × b ≦ 150. Preferably, 2 ≦ 2 × a ≦ 70, 5 ≦ 2 × b ≦ 120, and more preferably 2 ≦ 2 × a ≦ 50, 10 ≦ 2 × b ≦ 100. If 2 × a = 0, 2 × a> 150, the writing property tends to be inferior. Further, when 2 × b = 0, the drying suppression effect tends to be inferior, and when 2 × b> 150, the writing property tends to be inferior.

The ratio of EO to the total of AO and EO in the formula (I) is 10 to 99% by mass, preferably 20 to 70% by mass. If the amount is less than 10% by mass, the effect of suppressing the drying tends to be remarkably inferior. If the amount exceeds 99% by mass, the ratio of AO is too small, and thus the effect of the present invention cannot be obtained.
Moreover, the addition form of an oxyethylene group and a C3-C4 oxyalkylene group is a block form. If it is random, it is inferior to faintness. The addition order is preferably such that the dimer diol is bonded in the order of AO and EO.

  R is a hydrocarbon group having 1 to 4 carbon atoms. Examples of the hydrocarbon group include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, a sec-butyl group, a tert-butyl group, and a mixed group thereof. In the present invention, a methyl group and an ethyl group are preferable. When the carbon number is 5 or more, the drying suppression effect tends to be inferior.

In the alkylene oxide derivative represented by the formula (I), Z is a residue obtained by removing a hydroxyl group from dimer diol. Here, the dimer diol is a diol obtained by reducing dimer acid. In addition, the dimer diol residue part is essential for improving the writing property.
The dimer acid used as a raw material of the dimer diol used in the present invention is a dimer obtained by polymerizing an unsaturated fatty acid or a lower alcohol ester thereof, for example. Specifically, it can be synthesized by a method of reacting an unsaturated fatty acid such as oleic acid, linoleic acid or linolenic acid or an ester of these lower alcohols by thermal polymerization such as Diels-Alder reaction, or other reaction methods. Any unreacted fatty acid may remain in the generated dimer acid as long as the effects of the present invention are not impaired.

The dimer acid is preferably a dimerized unsaturated fatty acid having 12 to 24 carbon atoms or a lower alcohol ester thereof. In this case, Z is a dimer diol residue having 24 to 48 carbon atoms. Such unsaturated fatty acids include myristoleic acid, palmitoleic acid, oleic acid, elaidic acid, vaccenic acid, gadoleic acid, erucic acid, nervonic acid, linoleic acid, linolenic acid and their lower alcohols having 1 to 3 carbon atoms. Examples thereof include unsaturated fatty acids having 18 carbon atoms, and oleic acid and linoleic acid or lower alcohol esters thereof are particularly preferable. Alternatively, dimer acid obtained by hydrogenating the remaining unsaturated double bond after dimerization may be used.
Dimer diols are derived from animal oils and vegetable oils. Although all can be used in this invention, the thing derived from vegetable oil is more preferable. Examples of such dimer diols include Cognis Japan's Sovermol 908, Unikema's PRIPOL 2033, Toagosei Co., Ltd. PESPOL HP-1000, and the like.

Specific examples of the alkylene oxide derivative used in the present invention include, for example, POB (25) POE (34) dimethyl dimer diol ether, POB (25) POE (35) dimethyl dimer diol ether, POB (4) POE ( 13) Dimethyl dimer diol ether, POB (25) POE (52) dimethyl dimer diol ether, POB (18) POE (41) dimethyl dimer diol ether, POB (18) POE (41) diethyl dimer diol ether, POB (18) POE (41) dipropyl dimer diol ether, POB (18) POE (41) dibutyl dimer diol ether, POB (11) POE (30) dimethyl dimer diol ether, POB (15) POE (45) dimethyl Dimer diol ether, POB (18) POE (50) dimethyl dimer diol ether, POB (21) POE (56) dimethyl dimer diol ether, POB (12) POE (50) dimethyl dimer diol ether, POB (18) POE (61 ) Dimethyl dimer diol ether, POB (3) POE (40) dimethyl dimer diol ether, POB (6) POE (82) dimethyl dimer diol ether, POB (40) POE (120) dimethyl dimer diol ether, POB (100) POE (40) Dimethyl dimer diol ether, POE (35) POP (30) dimethyl dimer diol ether, POE (52) POP (30) dimethyl dimer diol ether, and the like.
The POE, POP, and POB are abbreviations for polyoxyethylene, polyoxypropylene, and polyoxybutylene, respectively, and may be abbreviated as follows. The added moles of POE, POP, and POB are the total added moles in the molecule, that is, expressed as values of 2 × a and 2 × b.

  The alkylene oxide derivative represented by the formula (I) can be produced by a known method. For example, it can be obtained by subjecting dimer diol to addition polymerization of alkylene oxide having 3 to 4 carbon atoms and ethylene oxide in this order, and then subjecting alkyl halide to ether reaction in the presence of an alkali catalyst.

  The blending amount of the block-type alkylene oxide derivative is usually 1 to 20% by mass, preferably 3 to 10% by mass, based on the entire aqueous ink composition. If the amount is less than 1% by mass, the effect of the present invention cannot be sufficiently obtained. If the amount exceeds 20% by mass, the improvement in blurring and blurring tends to be inferior.

(B) Colorant The colorant used in the present invention is not particularly limited, and any one or two of inorganic, organic pigments and dyes conventionally used in aqueous pigment ink compositions can be used. The above can be used. Specific examples of inorganic pigments include titanium oxide, carbon black, and metal powder. Examples of organic pigments include insoluble azo pigments, chelate azo pigments, phthalocyanine pigments, quinacridone pigments, anthraquinone pigments, perylene pigments, and perinones. Examples of the dyes include acid dyes, basic dyes, direct dyes, and the like based on pigments, nitro pigments, nitroso pigments and dioxazine pigments.

  Furthermore, so-called plastic pigments such as colored fluorescent fine particles can also be suitably used. Commercially available products include Lumicol NKW2101 (red orange tones), 2102 (green), 2103 (red), 2104 (orange), 2105 (Yellow), 2106 (Yellow Orange), 2107 (Cerise Pink), 2117 (Pink), 2127 (Rose), 2137 (Rubin), 2167 (Violet), 2108 (Blue) (above) Nippon Fluorescent Chemical Co., Ltd.), SF5515 (yellow), SF7012 (green), SF7014 (orange), SF7015 (lemon yellow), SF7017 (pink), SF7037 (violet), SF7018 (blue) Company ) And the fluorescent fine particle dispersion, such as.

  The blending amount of the colorant is usually 2 to 60% by mass, preferably 5 to 50% by mass, based on the total amount of the aqueous ink composition. If the amount is less than 2% by mass, the concentration of the handwriting is thin and inferior in practicality.

In the aqueous ink composition according to (c) water present invention, water is mainly used as a solvent. The water to be used is not particularly limited, and specific examples include purified water, ion exchange water, and tap water.
The amount of water in the ink composition is usually 25 to 90% by mass with respect to the total amount of the water-based ink composition. If the amount is less than 25% by mass, the effect due to the blending may not be sufficiently exhibited. If the amount exceeds 90% by weight, the blending amount of other components may be decreased, and thus the effect may be degraded.

  In addition to the above-mentioned essential components, the water-based ink composition of the present invention includes surfactants, rust inhibitors, antifungal agents, preservatives, pH adjusters, humectants, lubricants, and dispersion stabilizers that are usually used as necessary. In addition, components such as a dispersion resin and the like can be blended within a range not impairing the effects of the present invention.

  The water-based ink composition according to the present invention can be widely applied to writing instruments such as marking pens, fluorescent pens and water-based ballpoint pens, and other ink jet recording, stamping, and printing.

  Next, the present invention will be specifically described with reference to examples. The present invention is not limited thereby. In the following examples, the description of the blending amount means mass% unless otherwise specified, and BO represents an oxybutylene group. First, the evaluation methods used in each example, comparative example, and test example will be described.

Evaluation (1): Drying suppression effect The time during which writing was possible was measured in an environment of temperature: 24 ° C., humidity: 50% after removing the cap from the main body. The evaluation criteria are as follows.
◎ ... 60 hours or more.
○: 48 to less than 60 hours.
Δ: Less than 24 to 48 hours.
X: 24 hours or less.

Evaluation (2): No fading The panel was removed from the main body, 10 panelists handwritten after 24 hours in an environment of temperature: 24 ° C., humidity: 50%, and the writing feeling was evaluated. The evaluation criteria are as follows.
◎… 8 or more panelists recognized that the writing taste was not blurred.
○: 6 or more panelists and less than 8 panelists recognized that the writing taste was not blurred.
Δ: 3 or more panelists and less than 6 panelists admitted that the writing was not faint.
X: Less than 3 panelists recognized that the writing was smooth.

Evaluation (3): Bleeding Immediately after writing, the ink is blotted and the writing paper is observed for smearing when the handwriting is immersed in water for 1 minute.
◎… No ink bleeding or writing paper stains.
○: Slightly oozing out of ink and no writing paper stains.
Δ: The ink oozes out and the writing paper is dirty.
× ... Almost no writing line left

Inventors prepared the ink composition by the conventional method in the compounding composition shown in following Table 1, and performed the evaluation test about the said evaluation items (1)-(3).

Next, a method for synthesizing the alkylene oxide derivative used in the present invention will be described. In addition, about the addition mole number of an oxyalkylene group and an oxyethylene group, it describes as a value of 2xa and 2xb, respectively.
<Synthesis example of alkylene oxide derivative>
POB (18 mol) POE (41 mol) dimethyl dimer diol ether (Table 1 Compound 1)
Z- {O-[(AO) _a- (EO) _b ] -R} ₂
(Z: dimer diol (derived from linoleic acid) having 36 carbon atoms, AO; oxybutylene group, 2 × a = 18, 2 × b = 41, R = methyl group, EO / (AO + EO) = 58.2 mass %)
Dimer diol 270 g (0.50 mol, trade name: Sovermol 908 manufactured by Cognis Japan Co., Ltd., dimer diol derived from linoleic acid) and 6.0 g of potassium hydroxide were charged into an autoclave, and the air in the autoclave was dried nitrogen. After the replacement, the catalyst was completely dissolved at 140 ° C. with stirring. Subsequently, 650 g of butylene oxide was dropped from a dropping device at 120 ° C. and 0.2 to 0.5 MPa (gauge pressure), and the mixture was stirred for 3 hours. Subsequently, 905 g of oxyethylene was dropped from the dropping device at 120 ° C. and 0.2 to 0.5 MPa (gauge pressure), and stirred for 2 hours. Next, after adding 100 g of potassium hydroxide and replacing the system with dry nitrogen, 60 g of methyl chloride was injected at a temperature of 80 to 130 ° C. and 0.3 MPa (gauge pressure) and reacted for 6 hours. Thereafter, the reaction product was taken out from the autoclave, neutralized with hydrochloric acid to pH 6-7, and the contained water was removed by treating at 100 ° C. for 1 hour. Further, filtration was performed to remove the salt produced after the treatment, and thus Compound 1 was obtained.

  According to the above synthesis examples, the present inventors produced compounds 1 to 5 and comparative compounds 1 to 6 shown in Table 1 below.

In accordance with the above production examples, the present inventors prepared various alkylene oxide derivatives, mixed and stirred a sample having the composition described in Table 2 below, and filtered through a membrane filter having a pore size of 1 μm to form a water-based ink composition. A product was prepared. The prepared water-based ink composition was filled in a marking pen provided with a fiber bundle ink occlusion body, and an evaluation test was performed on the above evaluations (1) to (3).
In addition, what was shown in the said Table 1 was used for the (a) alkylene oxide derivative mix | blended with a composition.

  First, Table 2 shows the comparison results with those obtained by adding a drying inhibiting component contained in a conventional marking pen.

*1)；第一工業製薬株式会社製界面活性剤、商品名
*2)；日本蛍光化学株式会社製蛍光顔料水分散体、商品名

* 1): Daiichi Kogyo Seiyaku Co., Ltd. surfactant, product name
* 2): Nippon Pigment Chemical Co., Ltd. fluorescent pigment aqueous dispersion, product name

As is clear from Table 2 above, Test Example 1 in which DMSO and urea contained in the conventional marking pen were added to suppress ink drying, and Test Example 2 in which sucrose fatty acid ester was added were effective in inhibiting pen tip drying. However, Test Example 3 to which an alkylene oxide derivative was added exhibited a more excellent drying inhibiting effect. Moreover, it was a result better than the prior art also about the blurring at the time of writing, and a blur.
Accordingly, the present inventors have continued to study suitable conditions for the alkylene oxide derivative, focusing on blending the alkylene oxide derivative into the water-based ink composition as a drying inhibiting component.

  Subsequently, the present inventors used the compounds 1 to 5 and the comparative compounds 1 to 6 shown in Table 1 and the water-based ink compositions of Examples and Comparative Examples having the blending compositions described in Table 3 and Table 4 below. And the evaluation test was performed for the above evaluations (1) to (3).

*2)；日本蛍光化学株式会社製蛍光顔料水分散体、商品名

* 2): Nippon Pigment Chemical Co., Ltd. fluorescent pigment aqueous dispersion, product name

*2)；日本蛍光化学株式会社製蛍光顔料水分散体、商品名
上記表３より明らかなように、特定構造のブロック型アルキレンオキシド／エチレンオキシドダイマージオールエーテル（化合物１〜５）を配合した場合、（１）〜（３）のいずれの評価においても従来技術と比較して優れた結果であった。
これに対して表４に示されるように、オキシエチレン基のみあるいはオキシブチレン基のみの化合物（比較化合物１、２）を用いた比較例１、２ではいずれの評価においても満足のいくものが得られなかった。特にオキシブチレン基のみの場合はペン先乾燥抑制効果の点で劣っていた。
両末端が水素の化合物（比較化合物３）を用いた比較例３ではいずれの評価においても満足できる結果が得られず、両末端が炭素数６の炭化水素基の化合物（比較化合物４）を用いた比較例４では特にペン先乾燥抑制効果の点で著しく劣っていた。
また、アルキレンオキシド／エチレンオキシドの結合形態がランダム型の化合物（比較化合物５）を用いた比較例５、ダイマージオール部分を有さないアルキレンオキシド／エチレンオキシド誘導体（比較化合物６）を用いた比較例６では、かすれのなさの点において満足の得られるものではなかった。
以上のことから、前記一般式（Ｉ）で示される、特定構造を有するアルキレンオキシド誘導体が、本発明の優れた効果を発揮できることが確認された。

* 2): Nippon Kogyo Kagaku Co., Ltd. fluorescent pigment aqueous dispersion, product name As apparent from Table 3 above, when a block type alkylene oxide / ethylene oxide dimer diol ether (compounds 1 to 5) having a specific structure is blended, In any of the evaluations (1) to (3), excellent results were obtained as compared with the conventional technique.
On the other hand, as shown in Table 4, Comparative Examples 1 and 2 using compounds having only oxyethylene groups or only oxybutylene groups (Comparative Compounds 1 and 2) were satisfactory in any evaluation. I couldn't. In particular, in the case of only the oxybutylene group, it was inferior in the point of inhibiting the drying of the nib.
In Comparative Example 3 using a compound having hydrogen at both ends (Comparative Compound 3), satisfactory results were not obtained in any evaluation, and a compound having 6 carbon atoms at both ends (Comparative Compound 4) was used. In Comparative Example 4, the effect of inhibiting the drying of the nib was particularly inferior.
In Comparative Example 5 using a compound in which the bond form of alkylene oxide / ethylene oxide is a random type (Comparative Compound 5) and Comparative Example 6 using an alkylene oxide / ethylene oxide derivative (Comparative Compound 6) having no dimer diol moiety However, it was not satisfactory in terms of faintness.
From the above, it was confirmed that the alkylene oxide derivative having a specific structure represented by the general formula (I) can exhibit the excellent effects of the present invention.

  Then, the suitable compounding quantity of the alkylene oxide derivative mix | blended characteristically with the ink composition concerning this invention was examined. The test results are shown in Table 5.

*2)；日本蛍光化学株式会社製蛍光顔料水分散体、商品名

* 2): Nippon Pigment Chemical Co., Ltd. fluorescent pigment aqueous dispersion, product name

As apparent from Table 5 above, when the block-type alkylene oxide derivative according to the present invention was not included (Example 12), the drying suppression effect, the absence of blur, and the blur were all inferior.
On the other hand, when the blending amount of the block-type alkylene oxide derivative is 0.5% by mass (Example 6), the effect of blending is not sufficiently exhibited, and when it is 30% by mass (Example 11). , Both faintness and blurring were inferior. From the above results, it was confirmed that the blending amount of the block-type alkylene oxide derivative according to the present invention is preferably 1 to 20% by mass, and particularly preferably 3 to 10% by mass.

  Examples of the fluorescent pen made of the water-based ink composition according to the present invention will be shown below, but the present invention is not limited thereto.

（製法および評価）
上記成分を混合攪拌し、ポアサイズ１μｍのメンブランフィルターでろ過して水性インキ組成物を調製した。得られた水性インキ組成物を含む蛍光ペンは、本体からキャップを外して長期間放置してもペン先乾燥抑制効果に優れ、さらに、かすれのなさおよびにじみが改善され、筆記性に優れていた。

(Manufacturing method and evaluation)
The above components were mixed and stirred, and filtered through a membrane filter having a pore size of 1 μm to prepare a water-based ink composition. The fluorescent pen containing the obtained water-based ink composition was excellent in the effect of suppressing the drying of the pen tip even when the cap was removed from the main body for a long period of time, and further, the faintness and blurring were improved and the writing property was excellent. .

Claims (4)

(A) a block-type alkylene oxide derivative represented by the following general formula (I):
(B) a colorant;
(C) A water-based ink composition containing water.
(Chemical formula 1)
Z- {O-[(AO) _a- (EO) _b ] -R} ₂ (I)
(In the formula, Z is a residue obtained by removing a hydroxyl group from dimer diol, EO is an oxyethylene group, AO is an oxyalkylene group having 3 to 4 carbon atoms, and these addition forms are block-like. A and b) Are the average added moles of the oxyalkylene group and oxyethylene group, respectively, 1 ≦ 2 × a ≦ 150, 1 ≦ 2 × b ≦ 150, and the oxyalkylene group having 3 to 4 carbon atoms and the oxyethylene group (The ratio of the oxyethylene group to the total is 10 to 99% by mass. R is the same or different hydrocarbon group having 1 to 4 carbon atoms.)   2. The water-based ink composition according to claim 1, wherein AO is an oxybutylene group in the block-type alkylene oxide derivative represented by the formula (I).   The water-based ink composition according to claim 1 or 2, wherein Z of the alkylene oxide derivative represented by the general formula (I) is a dimer diol residue having 24 to 48 carbon atoms.   The water-based ink composition according to claim 1, wherein the amount of the (a) alkylene oxide derivative is 1 to 20% by mass.