JPS58136669A - Solidified ink - Google Patents

Abstract

PURPOSE:To provide a solidified ink which is used for marking pen, felt pen, ball point pen, etc. and makes it possible to write without the use of pen tip, prepared by adding a solidifying agent to ink. CONSTITUTION:Ink is solidified by adding poly-gamma-benzyl-L-glutamate, sodium stearate, sodium myristate, etc. as solidifier, to water-based ink or by adding isopropyl myristate, anisol-p-aminoazotoluene, etc. as solidifier, to oil ink. The solidifying agent is added in an amount of about 5-10wt% (about 1-4wt% will suffice when ink is solidified directly within writing utensils).

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a solidified ink suitable for writing, particularly for marking pens such as felt-tip pens and felt-tip pens, ballpoint pens, and the like.

The object of the present invention is to make an ink based on water and a printing machine solvent, form a certain shape and fill it into a suitable container (writing instrument body), or fill the ink directly into the container and place it inside the container. Let it solidify.

The objective is to use a conventionally known pen tip if necessary, and to make an ink that can be written up to the neck depending on the structure of the container.

Conventional writing inks are all liquid, and no similar writing inks are known. This resulted in the following problems.

■Feature pens, marking pens, and water-based hole pens have a structure in which ink is absorbed into a core, and the pen tip or fiber bundle for ink supply is brought into contact with the core, so the core is essential.

■Inks that use pigments as coloring components (for example, white inks) tend to have dispersion systems that collapse (the pigments settle over time, and to prevent this, a stirring ball is placed in the ink container. However, uneven ink flow tends to occur.

■As it is a liquid, a pen tip is always required for writing.

However, in this invention, a sympathizer is added to the ink and the ink is made into a solid state that becomes a sol under a predetermined pressure. Therefore, it is possible to directly store the solid state ink in the writing instrument body, and a core is not required. .

(2) Since the pigment components in the ink are fixed in a solid state, even if the ink uses pigments, it remains in a dispersed state and no pigment precipitation occurs.

■Since the ink itself is solidified, it is possible to write without using a pen tip or the like.

The above-mentioned conventional problems are solved. In this invention, gelatin, sodium alginate, stearic acid, palmitic acid, myristic acid, carboxymethyl cellulose, nylon metal salts, boy-f-bay4'-L-glutamate, and (acid, terbromophenanthrene-3
- Sulfonic acids, methyl cellulose, etc., do not increase viscosity in water (they have the property of solidification) when given the following conditions.Also, as other agents for organic solvent-based inks, polyamide resins, oils and fats, etc. Waxes and their esters or anizole-P-aminoazotoluene do not increase viscosity when given the following conditions:
It has the property of solidifying in organic solvents. Some of these solids have a special kind of titanium-trovitic property, in that they easily change back to their original low viscosity liquid when subjected to pressure, etc., and solidify again when the pressure is removed. Ink can be made. Therefore, by applying these solid state properties, it is possible to create a solid state ink that can withstand light usage as a writing instrument.

The solidified ink of the present invention is obtained by adding the above-mentioned substances as sympathizers to a water-based or organic solvent-based ink in an appropriate amount depending on the intended use of the ink or the structure of the container. When the ink is made into an ink, resin,
The addition of a surfactant, an antifoaming agent, a heat insulating agent, an antifungal agent, etc. is the same as in the case of liquid writing ink.

As mentioned above, in the case of water-based inks, alkali metal salts such as stearic acid, oleic acid, palmitic acid, or myristic acid and a small amount of alkali metal salts are used as the sympathizing agent to obtain a solid state having chicken-tropic characteristics. It is desirable to use polyvinyl alcohol, polyvinylpyrrolidone, etc. in combination. In addition, when solidifying the ink and removing it from the mold, the amount added is approximately sqb to 1 ozb (
If the weight ratio is used within a range of (the same applies hereinafter) and solidified in the body of a writing instrument and there is no need to take it out, a range of /% to u% is appropriate.

For organic solvent-based inks, it is desirable to use a higher fatty acid ester such as isopropyl myristate, isopropyl palmitate or normal butyl stearate in combination with a small amount of carnauba wax. The amount of these additives should be in the range of 25% to 3S when solidifying the ink and taking it out from the mold, and if it is not necessary to take it out, it is appropriate to use around -1, but 1. If necessary, adding film-forming agents such as nitrocellulose alkyd resin, butyl polyacrylate, carboxy vinyl polymer, shellac, or methoxyethylene maleic anhydride copolymer will increase the effect as a sensitizing aid. be.

Orbon black 10 thiodiethylene glycol &% nonionic surfactant o, s (16 antifoaming agent l thiostearate)
i, 3% polyvinyl alcohol 0
．． ! r % Sodium benzoate l Water A5. &chi formulation example - titanium white 20 thiodiethylene glycol 27ti nonionic surfactant
θ, t S antifoaming agent,
迤Myristic acid - Polyvinylpyrrolidone 0.7% Sodium benzoate
θ, S% water S
Example of 5 and 3 formulations 3 Prussian blue IO thiodiethylene glycol to ti nonionic surfactant
O, S% antifoaming agent l
Sodium tipalmitate Co Tivoli vinyl alcohol O,S% Sodium benzoate
l water 65
S prescription example Dacarnauba wax /S Tinormalbutyl stearate 22% rosin WW
3 Butyl Thipolyacrylate Co Thymicrolis Black OA, f% Inbutanol SOS Prescription Example S Carnara I (Wax 10 Thiinoprobil Myristate 27 Tirodino WW
,? Thialkyd resin
Kochi Microris Blue 1IGk
g Inbutanol! ;0
S prescription example 6 Carnauba wax 72% isopropyl palmitate GL rosin WW
,? % shellac
Kochi microris green GA g
% isobutanol 50% Next,
Based on the above formulation example, Example of this invention, polyvinyl alcohol 0.3%, nonionic surfactant o, r%
Carbon black 10176,
Benzoic acid nose 1% and thiodiethylene glycol 20
Add ts and continue stirring at 0°C.

After the dye outside is completely dispersed in the system and while it is still hot, it is filled into the cylindrical writing instrument body λ in which the ballpoint pen nib L is set, and after being cooled and solidified within the writing instrument body, the above-mentioned writing instrument body The rear of the tank was opened and butane gas was injected to obtain a pressure of Sφ.

When writing with this writing instrument, a portion of the same ink 3 turned into a sol and came out from the tip of the pen, resulting in clear handwriting.

Next, according to the above-mentioned formulation example t, the mixture was stirred at 90°C as in the above-mentioned example, and after the extra dye was completely dispersed in the system, it was poured into a cylindrical body made of a synthetic resin film or other suitable material while it was still hot. It was filled and then cooled to solidify. After the sensitization, the opening side of the cylinder 1 was cut open to allow the solid ink S to come out at the tip, and when the ink was directly written without using a pen tip, clear handwriting was obtained.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a ballpoint pen using the solid ink of the present invention, and FIG. 11 is a cross-sectional view of a writing instrument for writing directly with the solid ink. L... Pen nib K... Writing instrument body 3,!・・Solid state ink ・・Cylinder patent applicant Masatsugu Suzuki, agent of Zeon Chemical Industry Co., Ltd.

Claims (1)

[Claims] l A solidified ink characterized by adding a desensitizing agent to the ink.Claim 1: The ink is water-based or oil-based.
Solidified Ink J
Alkali metal salts such as del-L-glutamate stearic acid, oleic acid, naphthylamine gelsulfonic acid, palmitic acid or myristic acid, and isopropyl myris for oil-based inks. The solidified ink according to claim 1, in which a higher fatty acid ester such as date, isopropyl palmitate or n-butyl sthialate or anizole-P-aminoazotoluene is used.