KR20120109118A

KR20120109118A - Ink composition for marker pen

Info

Publication number: KR20120109118A
Application number: KR1020110027287A
Authority: KR
Inventors: 김현문
Original assignee: 김현문
Priority date: 2011-03-28
Filing date: 2011-03-28
Publication date: 2012-10-08

Abstract

Comparative examples and examples.

Description

Marker pen ink composition {INK COMPOSITION FOR MARKER PEN}

The present invention relates to an ink composition having good physical properties such that curling property is easily separated from a writing surface and greatly increases hiding power and color clarity.

The chalk that has been used up to now has a bad effect on occupational diseases such as instructor's respiratory disorder and classroom environment due to dust generated when writing or erasing.

To compensate for this, an ink composition for a black or colored marker pen has been developed for applying to a white board writing board on a white background.

However, in the case of the conventional white blackboard ink, when writing on a writing surface other than the white blackboard, the desired hiding power does not come out, and when writing on sheet paper, there is a problem that the afterimage remains after use when it is erased.

In addition, the phenomenon that the pigment is settled when left in the pen state in the downward direction in the pen state, there is also a problem that the product stability is lowered.

It is an object of the present invention to provide an ink composition for a multipurpose marker pen and a method of manufacturing the same, which have good physical properties such as curling property, which are easily separated from a writing surface, and have greatly increased hiding power and color clarity.

It is an object of the present invention that the curling property is easily separated from the writing surface, and the hiding power and the color clarity are greatly increased.

Eggplant is to provide an ink composition for a multipurpose marker pen and a method of manufacturing the same.

Task solution

In order to achieve the above object,

According to one aspect of the invention,

In an ink composition for a marker pen comprising a mill base, a solvent, a plasticizer, a mold release agent, a drying retardant, and a surfactant, the mill base is 3 to 8% by weight of colored pigments, 0.3 to 1.5% by weight of a dispersant, and a resin. The ink composition for marker pens which consists of 11.4-16.0 weight% and the alcohol solvent 80-85 weight% can be presented.

In addition, according to another aspect of the present invention,

i) Disperse milling by dispersing 3 ~ 8% by weight of colored pigment, 0.3 ~ 1.5% by weight of dispersant, 11.4 ~ 16.0% by weight of butyral resin in 80 ~ 85% by weight of alcohol solvent, and milling the mill base with an average particle size of 0.10 ~ 0.16μm. Manufacturing step; And

ii) 30 to 36% by weight of the mill base, 40 to 50% by weight of solvent, 10 to 15% by weight of plasticizer, 2 to 5% by weight of release agent, drying retardant

2 to 5% by weight, including a step of mixing the surfactant 5 to 8% by weight, can be presented a method for producing an ink composition for a marker pen.

Hereinafter, the component which comprises the ink composition of this invention is demonstrated. The unit is weight percent.

Colored pigment is dyno mill, milled for 6-8 pass at 35 ℃ ~ 45 ℃, and the particle size distribution is 0.06 ~ 0.20μm, and the average particle size is 0.10 ~ 0.16μm. The content is preferably 3 to 8% by weight of the mill base, the hiding power is good in the above range.

The colored pigment used for this invention may be either a commercially available organic pigment or an inorganic pigment. In the present invention, PIGMENT RED 254 (CAS NO. 84632-65-5), PIGMENT GREEN 7 (CAS NO. 1328-53-6), PIGMENT BLUE 60 (CAS NO. 81-77-6), PIGMENT BLACK 7 (CAS NO. 84632-65-5) may be used, but is not limited thereto.

The resin imparts the adhesiveness, curling property, and pigment settling prevention function of the ink composition, it can be used by selecting one or more of polyvinyl butyral resin, cellulose resin, acrylic resin. Since the resin is in a powder state, it is used by dissolving at room temperature for 4 hours.

The content of the resin is preferably 11.4 to 16.0% by weight of the mill base, and 4 to 5.72% by weight in the total ink composition. If the content is less than 4% by weight, there is no peculiar curling effect, and after writing, a pigment residue is left after erasing. If the content exceeds 5.76% by weight, there is a problem that ink is not easily leaked when assembled to a pen due to a viscosity increase.

Dispersants may include, but are not limited to, polymeric wet dispersants, lecithin, and the like. This function increases the raw material dispersibility of each component, and it is preferable to use 0.3 to 1.5% by weight of the mill base. When using less than 0.3% by weight, there is a problem in raw material dispersion and when it is used in excess of 1.5% by weight, the raw material dispersibility is increased. Increases and reacts with the resin

There is a risk of gelation and deterioration.

The solvent serves to increase the blending ratio of each component and to adjust the viscosity, and ethanol, isopropyl alcohol, n-propyl alcohol, acetone, and the like can be used. If the content of the solvent is too low, there is a problem that the viscosity of the composition is high so that the ink is not easily leaked from the marker pen, if too high, the composition is low viscosity, the marker pen

There is a problem that excessive outflow of ink occurs from the color and the color is separated.

The plasticizer allows the thin film film of the resin to be well formed on the writing board surface according to the volatilization of the solvent after writing on the writing surface using ink, and improves the erasability of handwriting, that is, erasability on the board. The plasticizer usable in the present invention may be used by selecting one or more of phosphate ester-based triaryl phosphate, dimethyl phthalate, dioctyl sebacate, dioctyl adipate, and isooctyl stearate. May be, but is not limited thereto. The plasticizer is preferably used 10 to 15% by weight of the total ink composition, when less than 10% by weight of the composition is lowered the flexibility of the composition is less erased, when used in excess of 15% by weight is too high the flexibility is poor drying There is.

The release agent functions to make the ink composition separate from the board or board so that it can be easily erased, and the polyoxyethylene lauryl ether, silicone, sorbitan monolaurate, and cetyl-2-ethylhexanoate (Cetyl 2 -ethyl hexanoate) may be used, but is not limited thereto. It is preferable to use this in an amount of 2 to 5% by weight of the total ink composition, but when used less than 2% by weight, there is a problem in that the separation of the composition on the board or the board is weak and not easily erased. Oil spreading and scavenging can cause board contamination due to residual oil.

The drying retardant is responsible for delaying the drying of the composition, and may be used at least one of polyglycerol fatty acid ester, glycerin, sucrose fatty acid ester, but is not limited thereto. Since it has low solubility at room temperature, it is good to dissolve it at 50-60 degreeC. The drying retardant is good to use 2 to 5% by weight of the total ink composition, when used in excess of 5% by weight is a problem that the drying speed is slow, and when using less than 2% by weight, the drying proceeds quickly.

Surfactant aims at the peeling of a handwriting on writing surface, and there exist a cationic surfactant, anionic surfactant, nonionic surfactant, etc. in this. In the case of nonionic surfactants, ether type surfactants having high permeability are preferable, and polyoxyethylene alkyl ether, polyoxyethylene ethylene higher alcohol ether, polyoxyethylene nonylphenyl ether, cetyl-2-ethyl hexanoate, n Butyl oleate, i-octyl palmitate, etc. may be used.

The surfactant preferably contains 5 to 8% by weight of the total ink composition, but less than 5% by weight of the surfactant is difficult to achieve uniform handwriting, and when it exceeds 8% by weight, excessive residual oil during erasing is excessive. There is a problem that exists.

In order to prepare the ink composition of the present invention, 3 to 8% by weight of colored pigment, 0.3 to 1.5% by weight of dispersant, and 11.4 to 16.0% by weight of butyral resin are dispersed for 4 hours in 80 to 85% by weight of alcohol solvent, and then 6 to 6 minutes by Dyno mill. By milling about 8 passes, the mill base with a particle size distribution of 0.06 ~ 0.20μm and an average particle size of 0.10 ~ 0.16μm is prepared first. Next, 30 to 36% by weight of the prepared millbase, 40 to 50% by weight of solvent, 10 to 15% by weight of plasticizer, 2 to 5% by weight of release agent, 2 to 5% by weight of drying retardant, and 5 to 8% by weight of surfactant And can be prepared by stirring.

Marker pen ink of the present invention is excellent in the separation characteristics from the writing surface, in addition to the white board board, such as a glass plate or sheet paper, there is a property that falls easily when writing, wide range of application compared to the conventional white board ink. In addition, the use of a small amount of pigment compared to the conventional white board ink by varying the content of the resin and additives significantly increases the hiding power and gloss when writing and prevents the pigment settling on the pen to improve the stability of the product.

Figure 1a is a photograph showing the results of the comparison test the hiding force in the green board of Example 1 and Comparative Example 1 of the present invention,
Figure 1b is a photograph showing the results of a comparison test the hiding force in the board of the Example and Comparative Example 1 of the present invention,
Figure 1c is a photograph showing the results of a comparison test the hiding force in the sheet of the Example and Comparative Example 1 of the present invention,
Figure 1d is a photograph showing the results of comparing the hiding force in the glass plate of Example and Comparative Example 1 of the present invention,
Figure 2 is a photograph showing the results of a comparison test of the eraser in the sheet of the Example of the present invention and Comparative Example 1.

Hereinafter, the configuration and operation of the present invention through the preferred embodiment of the present invention will be described in more detail. It is to be understood, however, that the same is by way of illustration and example only and is not to be construed in a limiting sense. Details that are not described herein will be omitted since those skilled in the art can sufficiently infer technically.

radish.

Claims

In the ink composition for marker pens comprising a mill base, a solvent, a plasticizer, a releasing agent, a drying retardant, and a surfactant, the mill base is 3 to 8% by weight of colored pigments, 0.3 to 1.5% by weight of a dispersant, and a resin. 11.4 to 16.0 wt% and an alcohol solvent 80 to 85 wt%, wherein the ink composition for the marker pen is 30 to 36 wt% of the mill base, 40 to 50 wt% of a solvent, and 10 to 15 wt% of a plasticizer. , 2 to 5% by weight of the release agent, 2 to 5% by weight of the drying retardant and 5 to 8% by weight of the surfactant, the ink composition for marker pens.