JP2001192598A - Brilliant aqueous ink composition for ballpoint pen - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a brilliant aqueous ink composition for a ballpoint pen which can obtain good fixable handwriting together with stronger brilliant feeling and a cubic effect compared to an aqueous ink composition using a brilliant pigment. SOLUTION: A brilliant aqueous ink composition for a ballpoint pen contains a multilayer film powder, a water soluble visoosity-increasing resin, a water soluble organic solvent and water as essential components wherein the above multilayer film powder of 0.01-20 wt.% is contained in the ink composition in total, further a synthetic resin emulsion of 0.1-40 wt.% as a binder component which makes the multilayer film powder fix on handwriting is contained in the ink composition in total as a solid part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brilliant aqueous ink composition for a ball-point pen, which can obtain a strong brilliant and three-dimensional handwriting.

[0002]

2. Description of the Related Art Conventionally, there has been provided an aqueous ink composition using a brilliant pigment in order to obtain a handwriting of a metallic gloss color such as gold or silver. For example, JP-A-7-118592 is an aqueous ink composition for a ballpoint pen using an aluminum powder pigment. JP-A-8-151547 is an aqueous ink composition using a pearl pigment. Further, Japanese Unexamined Patent Publication No.
No. 29734 is an aqueous metallic ink obtained by coloring an organic pigment with an aluminum powder pigment using a fixing agent.

[0003]

However, in the case of an aqueous ink composition using such a brilliant pigment such as an aluminum powder pigment or a pearl pigment, it is difficult to obtain a handwriting having a strong brilliant feeling and a three-dimensional effect. there were. Further, in order to obtain a metallic color, a method of coloring these glittering pigments with a coloring material such as a dye or a pigment has been adopted.However, when coloring, there is a problem that the glittering properties are lost because a resin or the like is used. there were.

[0004] An object of the present invention is to provide a handwriting having a stronger brilliant feeling and a stronger three-dimensional effect not available in a conventional ink composition as compared with an aqueous ink composition using a conventional brilliant pigment. It is an object of the present invention to provide a brilliant aqueous ink composition for a ballpoint pen, which can obtain the following.

It is a further object of the present invention to provide a brilliant aqueous ink composition for ballpoint pens, which has even better handwriting fixability.

[0006]

Means for Solving the Problems As a result of intensive studies to achieve the above object, according to the present invention, a ballpoint pen comprising, as essential components, a multilayer film powder, a water-soluble thickening resin, a water-soluble organic solvent and water. A brilliant aqueous ink composition was used. In the present invention, the term "multi-layer film powder" refers to a powder obtained by finely dividing a multi-layer film, and refers to a synthetic resin film powder in which the multi-layer is colored by refraction of light and changes in color depending on a viewing angle. . The “multi-layer film powder” includes a multi-layer film powder colored with high transparency.

Therefore, the glitter aqueous ink composition for ballpoint pens containing the multilayer film powder is stronger than the conventional aqueous ink compositions using glitter pigments such as aluminum powder pigments and pearl pigments. It is possible to obtain handwriting having a glittering feeling and a three-dimensional feeling.

However, in the glittering aqueous ink composition for a ballpoint pen containing a water-soluble thickening resin, the water-soluble thickening resin can improve the fixability of the multi-layer film powder to some extent. Since the powder has a large shape, it has been found that it is difficult for the water-soluble thickening resin to strongly fix the multilayer film powder to handwriting. Therefore, in the aqueous ink composition containing the multi-layer film powder, after writing, the multi-layer film powder is easily peeled off due to friction or the like, and it is difficult to continuously provide strong glitter and three-dimensional feeling to the handwriting. The durability of handwriting with a three-dimensional effect is low.

Therefore, in the present invention, a glittering aqueous ink composition for a ballpoint pen, which further contains a binder component for fixing the multilayer film powder to the handwriting, is employed. As described above, when the binder component that fixes the multilayer film powder to the handwriting is used, the fixing property of the multilayer film powder can be improved, and the durability of the handwriting having a glittering feeling and a three-dimensional effect can be increased.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION (Multi-layer film powder) The multi-layer film powder is not particularly limited as long as it has a multi-layer film form and is capable of producing a brilliant color. Examples of such multi-layer film powder include “Crystal Color” series manufactured by Diamond Industry Co., Ltd., and “Rainbow Flake” series manufactured by the company.

The “Crystal Color” series includes a product number “X-5”, a product number “X-20”, and a product number “X-4”.
0 ", part number" X-701-30 ", part number" X-701-
10 ", and each part number includes opal, topaz, blue topaz, emerald, coral, sapphire, diamond, aquamarine, peridot,
There are colors such as blue moon. That is, for example,
As a series of "Crystal Color X-20",
Product name “Crystal Color X-20 OPAL”, product name “Crystal Color X-20 TOPAZ”, product name “Crystal Color X-20 BLUETOPA”
Z ", product name" Crystal Color X-20 EMER "
ALD ”, product name“ Crystal Color X-20 CO ”
RAL ", product name" Crystal Color X-20 SA "
PHIRE ", product name" Crystal Color X-20 "
DIAMOND ”, product name“ Crystal Color X-2
OAQUARAMINE ", trade name" Crystal Color X-20 PERIDOT ", trade name" Crystal Color X-20 BLUEMOON "and the like. Therefore, the corresponding product name "Crystal Color X-
5 ”Series, Product Name“ Crystal Color X-40 ”
Series, product name "Crystal Color X-701-3"
0 ”series, product name“ Crystal Color X-701 ”
-10 "series.

The “Rainbow Flake” series includes a product number “No55”, a product number “No501”, a product number “No510”, a product number “No530”, and a product number “No55”.
0, part number "No580", part number "NoR-05", part number "NoR-15", part number "No501-30", etc. Each part number includes crystal, lemon yellow, dip yellow, apricot, nile green, Available in green, pink, sky blue, royal blue, lavender, red and monarch green.
That is, for example, “Rainbow flake No. 55”
Series, the product name "Rainbow Flake N
o55 Crystal ", product name" Rainbow Flake "
No. 55 Lemon Yellow, brand name "Rainbow Flake No. 55 Dip Yellow", brand name "Rainbow Flake No. 55 Nile Green", brand name "Rainbow Flake No. 55 Nile Green", brand name "Rainbow Flake No. 55 Green", brand name "Rainbow Flake No. 55 Pink" , Brand name "Rainbow flake No55 Sky Blue", brand name "Rainbow flake No55 Royal Blue", brand name "Rainbow flake No55 Lavender", brand name "Rainbow flake No55 Red", brand name "Rainbow flake No55 Monarch Green", etc. is there. Therefore, the series of “Rainbow flake No. 501”, the series of “Rainbow flake No. 510”, the series of “Rainbow flake No. 530”, the series of “Rainbow flake No. 550”, the series of “Rainbow flake No. 580”, and the “Rainbow flake No.
NoR-05 ”series,“ Rainbow Flake N ”
oR-15 ”series,“ Rainbow Flake No.
No. 501-30 "series.

The multilayer film powder is preferably contained in the ink composition in an amount of 0.01 to 20% by weight. When the amount of the multilayer film powder is less than 0.01% by weight based on the total amount of the ink composition, the glitter and the three-dimensional appearance are not sufficient. If the multilayer film powder exceeds 20% by weight of the total amount of the ink composition, the viscosity of the ink becomes too high, the fluidity is reduced, and the writing property is reduced. The optimum blending amount of the multilayer film powder is 0.05 to 10% by weight. The multilayer film powder preferably has a particle size of 40 mesh to 200 mesh.

(Binder Component) The binder component is not particularly limited as long as it can fix the multilayer film powder to handwriting. In order to strongly fix such multilayer film powder to handwriting, it is conceivable to use a water-soluble synthetic resin as a binder component. However, if the content of the water-soluble synthetic resin is increased depending on the type of the water-soluble synthetic resin in order to strongly fix the multilayer film powder, the solubility of the thickening resin and the dispersibility of the colorant may be adversely affected. In addition, the viscoelasticity of the ink may be significantly changed, and writing aptitude may be reduced. Also,
Even if the fixability to handwriting is exhibited, the aqueous ink composition must not reduce the strong glitter and three-dimensional effect of the multilayer film powder in the handwriting.

The present inventors have found that when a synthetic resin emulsion is used as a binder component for fixing a multilayer film powder to a handwriting, the solubility of a water-soluble thickening resin, the dispersibility of a colorant, the viscoelasticity of an ink, It has also been found that the fixability of the multi-layer film powder to handwriting can be enhanced without adversely affecting the color development of the ink and without impairing the effects of the strong glitter and three-dimensional effect of the multi-layer film powder.

Accordingly, when the aqueous ink composition of the present invention containing the multi-layer film powder is used for writing on a substrate such as paper, metal, plastic, or textile product, the multi-layer film can be applied to the handwriting. Can improve the fixability of the powder,
It is possible to make the handwriting durable, and it is possible to keep giving the handwriting a strong glitter and a three-dimensional effect. This is suitable for multi-layer film powder with large flake shape because the film-forming property of the synthetic resin emulsion is suitable for handwriting without impairing the strong glitter and three-dimensional effect of the multi-layer film powder. This is because strong fixing can be achieved.

Furthermore, since the binder component in the present invention is not a water-soluble synthetic resin but a synthetic resin emulsion, the solubility of the water-soluble thickening resin, the dispersibility of the colorant, and the viscoelasticity of the ink are simultaneously added. It does not adversely affect the characteristics such as. Therefore, the ink composition of the present invention can improve the fixability of the multi-layer film powder without affecting the viscosity of the ink, the suitability for writing, and the color of the handwriting.

From the above, the glitter aqueous ink composition for ballpoint pens containing the multilayer film powder of the present invention can be prepared by using conventional aluminum pigments, pearl pigments and the like without deteriorating the ink properties and writing suitability. Compared with an aqueous ink composition using a brilliant pigment, it is possible to continue to provide a stronger brilliant feeling and three-dimensional effect to the handwriting.

The synthetic resin emulsion is not particularly limited, and any water-dispersible synthetic resin emulsion can be used. However, in consideration of ink properties and writing suitability, it is important to use one that does not affect the solubility of the water-soluble thickening resin, the viscosity of the ink, the dispersibility of the colorant, and the coloring of the ink. In addition, it is important that the effects of strong glitter and three-dimensional effect due to the compounding of the multilayer film powder are not impaired.

The minimum film forming temperature of the synthetic resin emulsion is preferably 20 ° C. or lower. When the minimum film-forming temperature of the synthetic resin emulsion is 20 ° C. or lower, particularly 0 ° C. or lower, the film can be formed not only at room temperature (about 25 ° C.) but also in a cold region, and the fixability of handwriting to the base material can be improved.

As the synthetic resin emulsion, those having anionic or nonionic properties can be suitably used. The synthetic resin emulsion having anionic or nonionic properties can be obtained, for example, by preparing a synthetic resin from anionic or nonionic monomers, or by using an anionic or nonionic emulsifier. When the synthetic resin emulsion has anionic or nonionic properties, the stability of the ink composition can be increased.

In addition, the synthetic resin emulsion has a
When H is 6 or more, those which do not affect the dispersibility of the colorant and the solubility of the water-soluble thickening resin are preferable.

From such a viewpoint, examples of the synthetic resin emulsion include an acrylic synthetic resin emulsion, a styrene-acrylic synthetic resin emulsion, and a vinyl acetate synthetic resin emulsion.
Further, as the acrylic synthetic resin emulsion, for example, an acrylic ester copolymer synthetic resin emulsion is suitable. As the styrene-acrylic synthetic resin emulsion, for example, a styrene-acrylate copolymer synthetic resin emulsion is suitable. Further, as the vinyl acetate-based synthetic resin emulsion, for example, a vinyl acetate synthetic resin emulsion or a vinyl acetate-acrylate copolymer synthetic resin emulsion is preferably used. The synthetic resin emulsion may be used alone or in combination of two or more of these synthetic resins.

Specifically, as the acrylic synthetic resin emulsion, a trade name "Nicazole FX336" (manufactured by Nippon Carbide Industry Co., Ltd., anionic, pH 7.5,
(Minimum film formation temperature 0 ° C), brand name “Movinyl DM772”
(Clariant Polymer Co., Ltd., anionic, pH
8.5, minimum film forming temperature of 12 to 14 ° C.), and trade name “Movinyl 700” (manufactured by Clariant Polymer Co., Ltd., anionic, pH 8.0, minimum film forming temperature of 5 ° C.). Examples of the vinyl acetate-based synthetic resin emulsion include trade name “Nicazole TG134A” (manufactured by Nippon Carbide Industry Co., Ltd., pH 7.5, minimum film formation temperature 0 ° C.),
Product name "Movinyl 507" (manufactured by Clariant Polymer Co., Ltd., nonionic, pH 6.5, minimum film formation temperature 0)
° C).

Although the content of the synthetic resin emulsion is not particularly limited, for example, the preferred range is 0.1 to 40% by weight in terms of solid content based on the total amount of the ink composition. When the content of the synthetic resin emulsion is less than 0.1% by weight in terms of solid content with respect to the total amount of the ink composition, the fixability of the multilayer film powder to handwriting decreases. On the other hand, if the content of the synthetic resin emulsion exceeds 40% by weight in terms of solids with respect to the total amount of the ink composition, the solids will increase and the writing aptitude will deteriorate due to film formation at the pen tip. In addition, handwriting becomes easy to whiten. In order to further improve the fixability of the multilayer film powder to handwriting, the content of the synthetic resin emulsion must be
Most preferably, the solid content is at least 0.3% by weight based on the total amount of the ink composition. Further, in order to further improve the writeability, the content of the synthetic resin emulsion should be at most 20 as a solid content relative to the total amount of the ink composition.
Most preferably, it is set to be% by weight. That is, the optimum content of the synthetic resin emulsion is 0.3 to 20% by weight.

(Water-Soluble Thickening Resin) As the water-soluble thickening resin, it is important to use a thickening resin capable of adjusting the viscosity of the ink and preventing dispersion and sedimentation of the multilayer film powder. . For example, microbial polysaccharides and derivatives thereof are used. For example, pullulan,
Xansan gum, welan gum, ramzan gum, succinoglucan, dextran and the like can be exemplified. In addition, water-soluble plant polysaccharides and derivatives thereof are used. For example, tragansi gum, guar gum, tara gum,
Locust bean gum, gati gum, arabinogalactan gum, gum arabic, quised gum, pectin,
Examples thereof include starch, syrup, gum pectin, carrageenan, alginic acid, and agar.
In addition, water-soluble animal polysaccharides and derivatives thereof are used. For example, gelatin, casein, and albumin can be exemplified. Further, as the thickening resin, an N-vinylacetamide resin such as an N-vinylacetamide resin and a crosslinked N-vinylacetamide resin can be used.

In the present invention, among the above-mentioned water-soluble thickening resins, microbial polysaccharides and derivatives thereof can be suitably used. The above-mentioned water-soluble thickening resins can be used alone or in combination of two or more.

The water-soluble thickening resin is preferably contained in the ink composition in an amount of 0.01 to 40% by weight. 0.01% by weight of the water-soluble thickening resin in the total amount of the ink composition
If it is less than 1, the effect of preventing settling of the multilayer film powder is not sufficient. 40% by weight of the water-soluble thickening resin in the total amount of the ink composition
When the viscosity exceeds, the viscosity of the ink becomes too high, the fluidity is reduced, and the writing property is reduced. The optimum amount of the water-soluble thickening resin varies slightly depending on the type of the water-soluble thickening resin,
It is 0.05 to 20% by weight. In the ink composition containing the synthetic resin emulsion together with the multilayer film powder, it is preferable that the water-soluble thickening resin contains at most 10% by weight. If the water-soluble thickening resin is added in an amount exceeding 10% by weight, the viscosity of the ink becomes too high, and the fluidity decreases.

(Water-soluble organic solvent) It is preferable to use a water-soluble organic solvent which can prevent drying at the pen tip and freezing of the ink. For example, ethylene glycol, diethylene glycol, triethylene glycol
Glycols such as propylene glycol and polyethylene glycol, polyhydric alcohols such as glycerin, ethylene glycol monomethyl ether, diethylene glycol monomethyl ether, dipropylene glycol monomethyl ether, and dipropylene glycol monopropyl. Glycol ethers such as ethers can be exemplified. These organic solvents can be used alone or in combination of two or more.

The water-soluble organic solvent is used in the total amount of the ink composition.
Preferably, it is contained in an amount of up to 40% by weight. When the amount of the water-soluble organic solvent is less than 1% by weight based on the total amount of the ink composition, the pen tip is easily dried and the ink is easily frozen.
When the amount of the water-soluble organic solvent exceeds 40% by weight based on the total amount of the ink composition, the solubility of the water-soluble thickening resin is affected, and the handwriting is difficult to dry. The optimal amount of the water-soluble organic solvent is slightly different depending on the type of the water-soluble organic solvent,
20% by weight.

(Colorant) As the colorant, those having solubility and dispersibility are preferable. Specifically, acid dyes,
In addition to water-soluble dyes such as direct dyes and basic dyes, inorganic pigments such as carbon black and titanium oxide, copper phthalocyanine pigments, sulene pigments, azo pigments, quinacridone pigments, anthraquinone pigments, dioxane pigments, Indigo pigments, thioindigo pigments, perinone pigments,
Organic pigments such as perylene pigments, indolenone pigments, and azomethine pigments, as well as fluorescent pigments and colored resin emulsions. These can also be used as a pigment dispersion. In the present invention, the colorant is 1
Species or a mixture of two or more can be used. Further, the multilayer film powder of the present invention can be used in combination with a glitter pigment such as an aluminum powder pigment or a pearl pigment. Further, it is used by being mixed with a concealing pigment such as various inorganic or organic white pigments such as opaque titanium oxide, alkylenebismelamine derivatives, plastic pigments (synthetic resin particle pigments) of various shapes such as spherical and flat shapes. You can also.

In the aqueous ink composition of the present invention, a coloring agent may not necessarily be contained. Even an aqueous ink composition which does not contain a coloring agent but contains a multilayer film powder can give a strong glittering feeling and a strong three-dimensional effect to handwriting. However, each of the above aqueous ink compositions containing a colorant is extremely preferable in that it can give a strong shine according to the color tone to the handwriting depending on the hue of the colorant.

The coloring agent is used in an amount of 0.1% in the total amount of the ink composition.
It is preferable that the content is from 0.5 to 15% by weight. When the amount of the coloring agent is less than 0.05% by weight in the total amount of the ink composition, it is difficult to visually recognize the coloring of the coloring agent. If the amount of the coloring agent exceeds 15% by weight based on the total amount of the ink composition, the viscosity of the ink becomes too high, and the fluidity decreases. The optimal amount of the coloring agent is
Although slightly different depending on the type of the coloring agent, it is 1 to 10% by weight.

(Other Additives) In the present invention, if necessary, lubricants such as polyoxyethylene alkali metal salts, dicarboxylic acid amides, phosphate esters, N-oleyl sarcosine salts, benzotriazole, tolyl Rust inhibitors such as triazole dicyclohexylammonium nitrate, antiseptic and fungicides such as benzoisothiazoline, pentachlorophenol and cresol, and various surfactants can be added. In addition, a surfactant can be used to disperse the multilayer film powder as the glitter pigment.

The preferred viscosity range of the ink composition of the present invention is from 500 mPa · s to 10,000 mPa · s. The ink composition of the present invention is adjusted to such a viscosity range. The viscosity is a value measured by an ELD viscometer (3 ° R14 cone, rotation speed: 0.5 rpm, 20 ° C.).

[0036]

EXAMPLES With the composition and the amount (parts by weight) shown in Table 1,
After mixing, stirring and dispersing each component such as water, a water-soluble organic solvent, a multilayer film powder, and a pigment base, a water-soluble thickening resin is added, and after filtering this, defoaming is performed. A brilliant aqueous ink composition was obtained. In the case of an ink composition containing a synthetic resin emulsion, water and a water-soluble organic solvent, and if necessary, other additives are mixed and agitated in the same composition and amount (parts by weight) shown in Table 1. Then, the multi-layer film powder is added thereto and stirred, and then a water-soluble thickening resin is added and stirred. Next, the pH of the mixture is adjusted to 8.5 with caustic soda, and then a pigment dispersion is added if necessary, followed by stirring. Subsequently, the synthetic resin emulsion was added and mixed. In the preparation, a conventionally known dispersion method, defoaming method, filtration method and the like were employed.

For comparison, components such as water, a water-soluble organic solvent, and brilliant pigments such as aluminum pigments and pearl pigments were mixed, stirred, and dispersed, and then a water-soluble thickening resin was introduced. After that, defoaming was performed to obtain a glittering aqueous ink composition for a ballpoint pen of a comparative example. In each case, a conventionally known method was used for the dispersion method, the defoaming method, the filtration and the like.

[0038]

[Table 1]

In Table 1, the composition of each raw material is as follows. (Glitter pigment) I) Trade name "Rainbow flake No55 Crystal", Dia Kogyo Co., Ltd., average particle size 120 mesh II) Trade name "Rainbow Flake No 55 Lemon Yellow", Dia Kogyo Co., Ltd., average particle size 120 mesh III) Trade name "Crystal Color X-5 OPA
L ", Dia Kogyo Co., Ltd., average particle size -119 to +12
0 mesh IV) Aluminum powder pigment: trade name "WXM0630",
Toyo Aluminum Co., Ltd., average particle size about 8 μm V) Pall pigment: trade name “Iriodin302”, Merck Japan Co., Ltd., average particle size about 5 to 20 μm

(Water-soluble thickening resin) I) Xanthan gum: trade name "KELZAN", manufactured by Sansei Co., Ltd. II) Welan gum: trade name "K1C376", manufactured by Sansei Corporation III) Polyacrylic acid: trade name "Carbo" Paul 94
0 ", manufactured by BF Goodrich

(Binder component) I) Acrylic synthetic resin emulsion: trade name "Nicazole FX336", manufactured by Nippon Carbide Industry Co., Ltd., anionic, pH 7.5, minimum film formation temperature 0 ° C II) Vinyl acetate synthetic resin emulsion : Trade name “Movinyl 507”, manufactured by Clariant Polymer Co., Ltd., nonionic, pH 6.5, minimum film-forming temperature 0 ° C. III) Acrylic ester copolymer resin emulsion:
Product name “Movinyl DM772”, manufactured by Clariant Polymer Co., Ltd., anionic, pH 8.5, minimum film formation temperature 12 to 14 ° C. IV) Methylcellulose: Product name “Cesca MC25
S ", manufactured by Daiichi Kogyo Seiyaku Co., Ltd.

(Water-soluble organic solvent) I) glycerin II) propylene glycol

(Colorant) I) Pigment Base: A pigment-based pigment dispersion is prepared by dissolving a mixture of the following phthalocyanine blue and the following pigment dispersing resin in the following ratio, adding triethylamine, and dissolving the mixture. -Dispersion with a mill, and an average particle size of 0.08μ.
m, a blue pigment aqueous dispersion having a solid content of 10% by weight. Phthalocyanine blue was manufactured by Dainippon Ink and Chemicals, Inc. under the trade name "Fast Gen Blue TGR".
Was used. In addition, a styrene-acryl copolymer (trade name “Johncryl J683”, manufactured by Johnson Polymer, weight average molecular weight: 8000) was used as the pigment dispersion resin. Phthalocyanine blue 5 parts by weight Pigment dispersing resin 1 part by weight

(Antiseptic / antifungal agent) 1,2-benzisothiazolin-3-one (trade name:
"Proxel GXL", manufactured by Hoechst Gosei Co., Ltd.) (Anti-rust agent) Benzotriazole

(Lubricant) Polyoxyethylene alkyl ether phosphate (phosphate ester-based activator, trade name "Phosphanol PE-510", manufactured by Toho Chemical Industry Co., Ltd.) (bright pigment dispersant) Ethylene nonyl phenyl ether: trade name "Emulgen PI-20T" (Kao Corporation, nonionic activator, HLB 13.2)

(Preparation of Test Sample) Next, each of the ink compositions of Examples and Comparative Examples shown in Table 1 was connected to one end of a ball pen tip (ball material: silicon carbide) made of stainless steel. A ball-point pen for each test sample was prepared by filling the ink container with a hollow shaft cylinder made of polypropylene and loading the ink container.

(Evaluation Test) Using these ball-point pens, writing was performed on commercially available loose-leaf paper, and the glitter, three-dimensional appearance and fixability of each ink composition were evaluated. The evaluation results are also shown in Table 1.

(Glitter feeling) The glitter feeling was evaluated by visual observation of the written state, and those having a strong glitter were evaluated as 、, those having a small glitter were evaluated as Δ, and those having no glitter were evaluated as x.

(Three-dimensional feeling) The three-dimensional feeling was also evaluated by visually observing the written state, and those having a strong three-dimensional effect were evaluated as 、, those having a small three-dimensional effect were evaluated as Δ, and those having no three-dimensional effect were evaluated as x.

(Fixing property) A test sample according to the example was used to write on a commercially available loose-leaf paper using a ballpoint pen, and after drying, a commercially available cellophane tape (adhesive tape) was applied on the handwriting and the state after peeling was visually observed. And fixability was evaluated according to the following evaluation criteria. ：: Multi-layer film powder or glitter pigment remains on handwriting,
The glitter before peeling off the cellophane tape is not lost. ×: The multi-layer film powder or glitter pigment is peeled off on the handwriting, and the glitter before peeling off the cellophane tape is lost.

As can be seen from Table 1, in the example, a handwriting having a strong glitter and a strong three-dimensional feeling, which imaged a gem of aquamarine, was obtained, and the writability was good. On the other hand, in each of the comparative examples, no glitter was obtained, and no three-dimensional effect was obtained. On the other hand, in Examples 1 to 3 in which the binder component was not included, a handwriting having a strong glitter and a three-dimensional effect that imaged a gem aquamarine was obtained, and the writability was good, but the fixability was poor. . On the other hand, in Examples 4 to 6 in which the binder component was contained, a handwriting having a strong glitter and a three-dimensional effect reminiscent of a gem aquamarine was obtained, and a handwriting having a good fixing property was obtained. .

[0052]

The present invention is a glittering water-based ink composition for ballpoint pens comprising, as essential components, a multilayer film powder, a water-soluble thickening resin, a water-soluble organic solvent and water. As compared with the aqueous ink composition using a pigment, it is possible to obtain an unprecedented unique handwriting having stronger glitter and three-dimensional effect. In particular, in the case of a glittering aqueous ink composition for a ballpoint pen further comprising a binder component for fixing the multilayer film powder to the handwriting, a handwriting having a strong glittering and three-dimensional effect and having excellent fixability is obtained. It is possible to obtain a durable handwriting that maintains a strong glittering feeling and a three-dimensional feeling.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tomohiro Sawa 1-6-20 Morinomiya Chuo, Chuo-ku, Osaka City, Osaka Inside Sakura Crepas Co., Ltd. (72) Inventor Yuki 1-6-6 Morinomiya Chuo, Chuo-ku, Osaka City, Osaka No. 20 F-term in Sakura Crepas Co., Ltd. (Reference) 4J039 AB01 AB07 AD03 AD08 AD10 BA04 BA13 BA35 BC07 BC09 BC13 BC17 BC39 BC60 BD04 BE01 BE03 BE04 BE05 BE06 BE12 BE23 CA06 EA28 EA43 GA27

Claims (8)

[Claims] 1. A brilliant aqueous ink composition for ballpoint pens comprising, as essential components, a multilayer film powder, a water-soluble thickening resin, a water-soluble organic solvent and water. 2. The brilliant aqueous ink composition for ball-point pens according to claim 1, wherein the multilayer film powder is contained in an amount of 0.01 to 20% by weight based on the total amount of the ink composition. 3. The brilliant aqueous ink composition for a ballpoint pen according to claim 1, further comprising a colorant. 4. The brilliant aqueous ink composition for a ballpoint pen according to claim 1, further comprising a concealing pigment. 5. The brilliant aqueous ink composition for ballpoint pens according to claim 1, further comprising a binder component for fixing the multilayer film powder to handwriting. 6. The brilliant aqueous ink composition for a ballpoint pen according to claim 5, comprising a synthetic resin emulsion as the binder component. 7. The brilliant aqueous ink composition for a ballpoint pen according to claim 6, wherein the synthetic resin emulsion has an anionic or nonionic property and has a minimum film-forming temperature of 20 ° C. or less. 8. The brilliant aqueous ink composition for a ballpoint pen according to claim 6, wherein the synthetic resin emulsion is contained in a solid content of 0.1 to 40% by weight based on the total amount of the ink composition.