JP2001002973A - Perfume-imparted aqueous ink for ball-point pen - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a directly-filling-type aqueous ink for a ball-point pen, rich in beautifulness and lustrousness, also having stability with time, having metallic luster and imparted with the perfume of a matter having a color similar to that associated with the color of the ink. SOLUTION: This ink is such as to use a color metallic pigment produced by adsorbing a color pigment to metallic powder. This ink is obtained by the following steps: preparing a mixed liquid comprising 1-20 wt.% of a color metallic pigment, moisturizing wetting agent, dispersant, rust-preventive lubricant, antifungal agent, and ion-exchanged water; adding 0.1-1.0 wt.% of a water-soluble or a water-dispersible polymer for imparting pseudoplasticity and the perfume of a matter having a color similar to that associated with the color of the ink to the above mixed liquid, and thereafter stirring the resultant mixed liquid.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aqueous scented ink for ballpoint pens.

[0002]

2. Description of the Related Art Conventionally, fragrance-containing writing implement inks are disclosed in, for example, JP-A-56-81377, "Fragrance-containing ballpoint pen ink", JP-A-63-223078, "Fragrance-based water-based ink", No. 283,645, "Water-based ink composition for writing implements" and the like.

[0003] Further, as a water-filled ink for ballpoint pens, which is rich in aesthetics and gloss and has a metallic luster of a direct-packing type which is stable over time, it has been proposed that "a metal powder is made to adsorb a color pigment with respect to the entire amount of the ink composition. Colored metallic pigments
20% by weight, 0.1 to 1.0% by weight of a water-soluble or water-dispersible polymer agent for imparting pseudoplasticity, and water-based ink for water-based ballpoint pens having a metallic luster. The present applicant has disclosed it in Japanese Patent Application No. 10-939416.

[0004]

SUMMARY OF THE INVENTION The present invention is directed to an aqueous ballpoint pen ink which is rich in beauty and gloss and has a metallic luster of a direct-packing type which is stable over time. An object of the present invention is to provide a new water-based ink for a ball-point pen to which a scent of an object having a similar color associated with a color is added.

[0005]

According to the present invention, in order to achieve the above object, 1 to 20% by weight of a colored metallic pigment obtained by adsorbing a colored pigment on a metal powder is added to a total amount of an ink composition. A water-soluble or water-dispersible polymer agent for imparting water is used in an amount of 0.1 to 1.0% by weight, and a water-based ink for water-based ballpoint pens having a metallic luster. Is added to the fragrance of the scent of the object having the following.

The above-mentioned "fragrance of a scent of an object having a similar color associated with the color of the ink" is, for example, a fragrance of a fragrance such as lemon when the color of the ink is yellow. When the color of red is a fragrance such as rose, etc., when the color of the ink is green, it is a fragrance of scent such as young leaves, and when the color of the ink is purple, it is a fragrance such as lavender. When the color of the ink is blue, it means a fragrance such as peppermint.

[0007] The colored metallic pigment adsorbs the organic pigment to the metal powder, so that various kinds of the organic pigment to be adsorbed can be selected, and a wide color tone with a strong metallic luster can be obtained as compared with a compound containing a normal pigment. The feature is that it is.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention uses, as a colored metallic pigment obtained by adsorbing a colored pigment to a metal powder, one sold by Showa Aluminum Powder Co., Ltd. (trade name: Friend Color). 1 to 20% by weight of the ink composition, 10 to 40% by weight of the moisturizing wetting agent, and 1 to 10% by weight of the dispersing agent.
8% by weight, a rust preventive lubricant of 0.2 to 2% by weight, ion-exchanged water and, if necessary, a pH adjuster, a bactericide and the like are added, mixed and stirred.

Next, 0.1 to 1.0% by weight of a water-soluble or water-dispersible polymer agent for imparting pseudoplasticity is added to the mixture.
Then, a fragrance of a scent of an object having a similar color reminiscent of the color of the mixed liquid is added and stirred to obtain a direct-packing type scented water-based ink for a ballpoint pen having a metallic luster of the present invention.

The colored metallic pigment is used in an amount of 1 to 20% by weight in the ink composition. If the amount is less than 1% by weight, the handwriting after writing will not have a metallic tone at all, and 20% by weight. %, The stability of the ink over time is deteriorated, the colored metallic pigment sediments, and the pen tip may be clogged with the ink, making writing impossible.

Examples of the water-soluble or water-dispersible polymer agent for imparting pseudoplasticity include natural polysaccharides such as guar gum and xanthan gum, and synthetic polymers such as a crosslinked acrylic acid polymer. In general, natural polysaccharides have a lower yield value than synthetic polymers, so that colored metallic pigments tend to settle. Therefore, if the addition amount is increased in order to suppress the sedimentation, the ink has a film-forming property due to the evaporation of water, so that the ink hardens at the pen tip, and it is easy to cause poor writing.
Synthetic polymers are preferred, and crosslinked acrylic acid polymers are particularly preferred.

The amount of the water-soluble or water-dispersible polymer agent imparting pseudoplasticity is preferably from 0.1 to 1.0% by weight. Is not obtained, the colored metallic pigment sediments, and if it exceeds 1.0% by weight, the ink viscosity and the yield value become too high, and the sedimentation of the colored metallic pigment can be prevented. This is because writing performance such as ink ejection is reduced.

The crosslinked acrylic acid polymer has a molecular weight of 30.
Thousands to five millions are preferred. The reason is that when formed into an ink, an ink having excellent aging stability and a high yield value can be formed. If the yield value is low, the colored metallic pigment will settle even if it receives a small shear stress, but the colored metallic pigment will settle, but if the yield value is high, it will not flow unless a stress greater than the yield value is applied, so the colored metallic pigment Settling can be prevented. When the molecular weight is less than 3,000,000, the metallic ion dissociated with time reduces the yield value of the ink, so that the colored metallic pigment sediments. When the molecular weight exceeds 5,000,000 or more, the crosslinked acrylic acid polymer becomes an ink. Since the ink cannot be uniformly dispersed in the ink, the stability over time of the ink deteriorates.

In order to prevent the ink at the pen tip from drying up, a moisturizing humectant is blended in an amount of 10 to 40% by weight.
If the amount is less than 10% by weight, the dry-up performance of the ink cannot be sufficiently obtained, and if it exceeds 40% by weight, a sufficient yield value cannot be obtained, so that the sedimentation of the colored metallic pigment cannot be prevented.

Examples of the moisturizing and wetting agent include ethylene glycol, propylene glycol, glycerin, diethylene glycol, triethylene glycol, dipropylene glycol, thiodiglycol, polyglycerin, polyethylene glycol, polypropylene glycol, methyl cellosolve, butyl cellosolve, methyl carbitol, and ethyl. A water-soluble organic solvent mixed with one or two or more selected from carbitol can be used.

In the present invention, the stability of the ink over time,
In particular, in order to improve the dispersion stability of the colored metallic pigment, 1 to 8% by weight of a dispersant is blended. The reason is that if it is less than 1% by weight, it cannot be uniformly dispersed, and if it exceeds 8% by weight, This is because the yield value of the ink is lowered.

As the dispersant, a polymer dispersant and a nonionic surfactant can be used. Specific examples include styrene acrylic acid copolymer, styrene acrylic acid alkyl methacrylate copolymer, polyoxyethylene nonylphenyl ether, polyoxyethylene lauryl ether, and the like.

Since the ink of the present invention is an ink for water-based ballpoint pens, it is better to add a lubricant to improve the rotation of the ball. However, since the ballpoint pen tip is made of a metal such as stainless steel or brass, it has an anticorrosive effect. A so-called anti-rust lubricant having an optimum is optimal. If the compounding amount is less than 0.2% by weight, the lubricating property is insufficient and the brush feeling and handwriting become poor, resulting in 2% by weight.
Exceeds 0.2, the yield value of the ink decreases.
2% by weight is preferred.

As the rust preventive lubricant, a mixture of one or two or more selected from a phosphate ester surfactant, benzotriazole, fatty acid and fatty acid ester can be used.

In consideration of the stability of the ink, the pH of the ink is preferably set to 6 to 8 using a pH adjuster.
If the pH is lower than 6, the polymer agent that imparts pseudoplasticity is difficult to uniformly dissolve and disperse, not only does not result in a stable ink over time, but also the effect of the rust preventive lubricant contained in the ink deteriorates. , Good writing performance cannot be obtained. On the other hand, if it is higher than 8, the reactivity of aluminum, which is the base of the colored metallic pigment, increases, so that it is difficult to control the reaction with water or a polymer agent that imparts pseudoplasticity, and it is difficult to obtain a stable ink over time. And the deterioration of the fluidity of the ink is caused. As the pH adjuster, monoethanolamine, diethanolamine, triethanolamine, N, N-dimethylethanolamine, N, N-diethanolamine, N, N-dibutylethanolamine, N, N-methyldiethanolamine and the like can be used.

The addition of a bacteriostatic agent is preferable because the propagation of the bacterium can be prevented and the stability over time is improved. As the antibacterial agent, 1,2-benzoisothiazolin-3-one, sodium benzoate, sodium dehydroacetate and the like can be used.

A specific example of an object whose image-like color is yellow is lemon. Lemon Perfume MS-7901 (manufactured by Miyasaka Perfume Co., Ltd.) is a fragrance perfume. Rose is a specific example of an object whose image-like color is red, and Rose, Perfume, and MS are fragrances.
-7902 (manufactured by Miyasaka Inc.). A specific example of an object whose image-like color is green is a young leaf, and Leaf Perf is a fragrant fragrance.
Ume MS-7903 (manufactured by Miyasaka Inc.). Lavender is a specific example of an object whose image-like color is purple, and Lavender / Perfume / MS-790 is a fragrance having a fragrance.
4 (manufactured by Miyasaka Inc.). A specific example of an object whose image-like color is blue is peppermint, and a fragrance having a fragrance is Peppermin.
There is t.Perfume.MS-7905 (manufactured by Miyasaka Inc.).

[0023]

An embodiment of the present invention will be described. Example 1 A trade name of Friend Color F503RG which is sold by Showa Aluminum Powder Co., Ltd. as a colored metallic pigment and has a mean particle size of 17 μm and a color of red gold: 1.0
20% by weight, ethylene glycol as a moisturizing humectant.
0% by weight, 3.0% by weight of a styrene acrylic acid methacrylic alkyl ester copolymer as a dispersant, 1.0% by weight of a phosphate ester surfactant as a rust preventive lubricant, and 1,2-benzoic acid as a bactericide 0.2% by weight of isothiazolin-3-one, 1.0% by weight of triethanolamine as a pH adjuster, and 72.4% by weight of ion-exchanged water are mixed, and the mixture is mixed with a magnetic stirrer at 60 ° C. for 1 hour. Mixed.

Next, 0.4% by weight of a crosslinked acrylic acid polymer having a molecular weight of 3,000,000 as a water-dispersible polymer agent for imparting pseudoplasticity to the above mixed solution, and Lemon Perf, a fragrance, were used.
Ume MS-7901 (manufactured by Miyasaka Inc.)
0% by weight and uniformly dispersed with a homogenizer stirrer,
A water-based ink for a ball-point pen having a yellowish gold-colored metallic luster and having a fragrance of lemon was obtained. The pH of the ink is 7.

Example 2 1.0% by weight of Friend Color F500RE (trade name), sold by Showa Aluminum Powder Co., Ltd. as a colored metallic pigment, having an average particle diameter of 17 μm and a color tone of red metallic, and Rose as a fragrance・ Perf
Using ume.MS-7902 (manufactured by Miyasaka Koryo Co., Ltd.), the other composition and formulation were the same as in Example 1.
An aqueous ball-point pen ink with a red-colored metallic luster and a direct-packing-type rose scent was obtained. The pH of the ink is
7

Example 3 A trade name of Friend Color F500GR, sold by Showa Aluminum Powder Co., Ltd. as a colored metallic pigment, having an average particle diameter of 17 μm and a green color tone: 1.0% by weight, and Leaf as a fragrance.・ Perf
Using ume.MS-7903 (manufactured by Miyasaka Koryo Co., Ltd.), other formulations and prescriptions were the same as in Example 1.
An aqueous ball-point pen ink having a green metallic luster and having a scent of young leaves of a directly packed type was obtained. The pH of the ink is 7
It is.

Example 4 Friend Color F500V, a trade name of violet metallic having an average particle diameter of 17 μm and sold by Showa Aluminum Powder Co., Ltd. as a colored metallic pigment.
I was used in an amount of 1.0% by weight.
Using r.Perfume.MS-7904 (manufactured by Miyasaka Koryo Co., Ltd.), the other blending and prescription are the same as those in Example 1 for an aqueous ball-point pen with a scent of lavender of a directly packed type having a purple metallic luster. An ink was obtained. The pH of the ink is 7.

Example 5 1.0% by weight of Friend Color F500BL, a trade name of Blue Metallic having an average particle diameter of 17 μm and sold by Showa Aluminum Powder Co., Ltd. as a colored metallic pigment, and 1.0% by weight as a fragrance, Peppermin
For t-Perfume MS-7905 (manufactured by Miyasaka Koshiro Co., Ltd.), the other blending and prescriptions were the same as in Example 1 for an aqueous ballpoint pen with a scent of peppermint of a directly packed type having a blue metallic luster. An ink was obtained.
The pH of the ink is 7.

[0029]

The ink for a water-based ballpoint pen with fragrance of the present invention has the above-mentioned structure, so that it has a strong metallic luster and various colors can be obtained, and is more stable with time than the conventional ink for a ball-point pen having a metallic luster. The scent of objects that are excellent in color and writability and have similar colors associated with the color of the ink, such as a lemon scent if the ink color is yellow, a rose scent if red, and a green scent if red. A completely new scented aqueous ballpoint pen ink was obtained, with the scent of young leaves, the scent of lavender if purple, and the scent of peppermint if blue.

Claims (6)

[Claims] 1 to 20% by weight of a colored metallic pigment obtained by adsorbing a colored pigment to a metal powder, and 0.1 to 20% by weight of a water-soluble or water-dispersible polymer agent for imparting pseudoplasticity to the total amount of the ink composition. Add a perfume of the scent of an object having a similar color reminiscent of the color of the ink to an ink for a direct-packing type water-based ballpoint pen having a metallic luster comprising 1 to 1.0% by weight and water. An ink for water-based ballpoint pens with fragrance. 2. The scented water-based ballpoint pen ink according to claim 1, wherein a perfume having a lemon scent is added to the water-based ballpoint pen ink whose color is yellow. 3. The water-based ink for a ballpoint pen according to claim 1, wherein a perfume having a rose scent is added to the water-based ink for a ballpoint pen whose color is red. 4. The scented aqueous ballpoint pen ink according to claim 1, wherein a fragrance having a scent of young leaves is added to the aqueous ballpoint pen ink whose color is green. 5. The water-based ink for a ballpoint pen according to claim 1, wherein a fragrance having a lavender scent is added to the water-based ink for a ballpoint pen whose color is purple. 6. The scented aqueous ballpoint pen ink according to claim 1, wherein a fragrance having a peppermint scent is added to the aqueous ballpoint pen ink whose color is blue.