JPH02209973A - Colored correcting ink composition - Google Patents

Abstract

PURPOSE:To obtain the subject composition, containing an organic solvent, titanium oxide-based white pigment, acrylic acid ester-based resin and coloring oil-soluble dye, excellent in stability with time, having rapid drying properties and capable of directly informing corrected parts by coloring. CONSTITUTION:The objective composition containing (A) preferably 30-60wt.% organic solvent (preferably cyclohexane, n-hexane, etc.), (B) preferably 20-60wt.% titanium oxide-based white pigment (preferably rutile type titanium dioxide prepared by using Al or Si as a principal treating agent), (C) preferably 3-20wt.% acrylic acid ester-based resin [preferably having <=9.0 solubility parameter (SP value) for the solvent (A), 0-50 deg.C glass transition point (Tg) and 0-5 acid value] and (D) preferably 0.01-1.0wt.% coloring oil-soluble dye.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a novel color correction ink composition. More specifically, the present invention has good stability over time, does not cause the pigment to settle, thicken, or float over a long period of time, has quick drying properties, and allows for immediate recognition of areas that have been corrected. This invention relates to a correction ink composition that is designed to be colored in advance.

Conventional technology Conventionally, as inks for correcting typographical errors made by ballpoint pens, felt-tip pens, dry copying (electrostatic copying), typewriters, etc., there have been oil-based inks for correcting typographical errors using water-based inks, water-based inks for correcting typographical errors using oil-based inks, and Dual-purpose (common) types that can be modified for any type of ink are known.

Among these correction inks, dual-use correction inks are particularly advantageous because they can correct any type of ink, regardless of the nature of the ink to be erased.

However, the commonly used dual-use correction ink is usually white to match the color of the paper, so when re-correcting the area coated with the -degree correction ink after drying, There was a big chance of it being overlooked.

For this reason, a method of colorizing the correction ink using colored pigments has been proposed (Japanese Patent Laid-Open No. 56-161
478 Publication), because the colored pigment is dispersed in the correction ink, it gradually settles over time, or
Or there is a tendency to float.

Problems to be Solved by the Invention The present invention overcomes the drawbacks of the conventional correction ink compositions, can prevent the correction area from being overlooked, and has a colorful color, which makes it possible to The purpose of this invention is to provide a correction ink composition that has a coloring function that is stable over a long period of time and that can also be used for playfulness.

Means for Solving the Problems The present inventor has conducted various studies in order to develop a dual-use color correction ink composition having such desirable properties. By using an acrylic ester resin as a dispersion resin and an oil-soluble dye for coloring as a coloring additive, it is difficult to cause sedimentation and floating phenomena as seen with color pigments, and It has been discovered that a correction ink composition can be obtained that provides a coating film with excellent vivid coloring function, and based on this knowledge, the present invention has been completed.

That is, the present invention comprises (A) an organic solvent, (B) a titanium oxide-based white pigment, (C) an acrylic ester-based resin, and (
D) A color correction ink composition containing an oil-soluble coloring dye is provided.

The present invention will be explained in detail below.

In the composition of the present invention, examples of organic solvents used as component (A) include cyclohexane and methylcyclohexane, since they have appropriate drying properties and can be used to correct both water-based and oil-based inks. , cycloparaffinic solvents such as ethylcyclohexane and dimethylcyclohexane, and paraffinic solvents such as n-hexane, n-hebutane, isohebutane, n-octane and isooctane. Each of these solvents may be used alone or in combination of two or more, and other solvents, such as Aromatic hydrocarbon solvents such as benzene, toluene, xylene, and ethylbenzene, ether solvents such as 1,4-dioxane, n-butyl ether, trioxane, and tetrahydrofuran, methyl ethyl ketone, methyl-〇-propyl ketone, methyl isobutyl ketone, cyclohexanone, etc. Ketone solvents, propyl formate, ester solvents such as ethyl acetate, etc. can also be added.

In the composition of the present invention, the titanium oxide-based white pigment used as component (B) is preferably a heavy coat type titanium dioxide that is a high solid (high concentration) system and can exhibit high hiding properties. Although rutile type titanium dioxide is preferred as a treatment agent, there is no problem in using general-purpose titanium dioxide treated with alumina. Such titanium oxide is easily available as a commercial product, and the commercial product includes:
For example, JR-800, JR-801, JR-600, J
R-701 (manufactured by Teikoku Kako Co., Ltd., product name), R-780,
R-780-2, R-850 (manufactured by Bansho Sangyo Co., Ltd., product name)
etc. can be mentioned.

In the present invention, the titanium oxide-based white pigment may be used in combination with other pigments, such as fine silica powder, calcium carbonate, white carbon, talc, clay, plastic pigment (hollow resin), etc., as desired. However, in this case, the other pigments are preferably used in a proportion of 30% by weight or less based on the total amount with the titanium oxide white pigment.

In the composition of the present invention, the acrylic ester resin used as component (C) needs to be soluble in the organic solvent used as component (A), and its solubility parameter (SP value) is 9. It is preferably 0 or less. Furthermore, from the point of view of coating strength, the glass transition point (Tg) is -
The temperature is 10°C or higher, preferably 0 to 50°C, and the acid value is 0 to 50°C in terms of affinity with titanium oxide white pigments.
A value in the range of 5 is preferred.

In the composition of the present invention, it is important to use an oil-soluble dye for coloring as component (D). Generally, commercially available correction fluids, whether water-based or oil-based, are usually provided in white to match the color of the paper, so it is often overlooked when re-correcting the areas that have been applied with the correction fluid after drying. There is. Furthermore, conventional methods that add colored pigments to color the liquid are simply dispersed colored pigments in the liquid, and tend to gradually settle and separate or float over time. be.

In the present invention, by using an oil-soluble dye for coloring that is soluble in an organic solvent as a coloring component instead of such a color pigment, it is possible to achieve a long-term stable color.

In the composition of the present invention, the oil-soluble dye for coloring used as component (D) is particularly light-colored so that the corrected area to which the composition of the present invention has been applied can be later corrected and visually recognized by printing etc. Preferred examples of such dyes include metal complex dyes, and commercially available liquid types include Spilon Yellow RH5-L.
iq, Spilon Blue
2BNH3-Liq, Subiron Red (Sp on R
ed) BEH5-Liq (manufactured by Hodogaya Chemical Co., Ltd., trade name), etc., and as a powder type, for example, Oil Yellow 103, Oil Red 5B, Oil Blue (
Oil Blue) IN (manufactured by Orient Chemical Co., Ltd., trade name), SOT Yellow (Yellow) -1% Spilon Yellow, GRL
H5special, SpilonBl
ue) 28NH, SOT Blue-1, S
OT Red (Red) -3, Subiron Red (Spi
lon Red) BEH5special (manufactured by Hodogaya Chemical Co., Ltd., trade name).

Regarding the content ratio of each component in the composition of the present invention, the organic solvent is 30 to 60% by weight, and the titanium oxide white pigment is 2% by weight.
0 to 60% by weight, 3 to 20% by weight of acrylic acid ester resin
It is preferable that the amount of the coloring oil-soluble dye is in the range of 0.01 to 1.0% by weight.

The composition of the present invention may also contain, if desired, various additives commonly used in dual-use correction inks, such as dispersants, antisettling agents, and coating-modifying resins (such as natural resins and aliphatic petroleum resins). , aromatic petroleum resins) and the like can be added within a range that does not impair the purpose of the present invention.

The correction ink composition of the present invention uses an organic solvent, a titanium oxide white pigment, an acrylic ester resin, an oil-soluble dye for coloring, and various additives added as desired in a predetermined ratio, and mixes these. It is prepared by uniformly mixing and dispersing using a dispersing machine such as a ball mill, colloid mill, attritor, sand mill, bead mill, etc.

Effects of the Invention The correction ink composition of the present invention has excellent stability over time, does not cause settling, thickening, or floating of coloring components over a long period of time, has quick drying properties, and is easy to clean even in areas that have been corrected. Since it is immediately visible by coloring, it has high commercial value as a dual-use type that can easily correct any typographical errors caused by any type of ink.

Example Next, the present invention will be explained in more detail with reference to Examples.

Example 1 Composition Component Weight % R-780 (manufactured by Gosoku Sangyo Co., Ltd., titanium dioxide) 40.
0 Methylcyclohexane 49.15 Dianal BR-101 (manufactured by Mitsubishi Rayon Co., Ltd., acrylic resin) 10.00
Titakote 5152 (manufactured by Japan 1'Tatsusha, titanate cuff bling agent)
0.80 Spiron Yellow RH5-Li
q O,05 The above components were mixed and dispersed in a ball mill for 40 hours to obtain a colored correction ink composition.

The composition obtained in this way does not stain the coated surface even when applied to lines drawn with water-based type ink or oil-based type ink, and a vividly colored coating film with high hiding power is obtained. , it was possible to fix it.

Also, this composition was left in a constant temperature bath at 50°C, and on the first day,
Coulter N
-4 particle size distribution meter to determine stability over time. The results are shown in Table 1.

Furthermore, this composition;
A forced sedimentation test was conducted in C165% RH for 4 hours to determine the sedimentation state. The results are shown in Table 2.

Example 2 Composition component Weight % JR-800
(manufactured by Teikoku Kako Co., Ltd., titanium dioxide) 45.00 Methylcyclohexane 24.49 Ethylcyclohexane 20.00 Dianal B
R-101 (manufactured by Mitsubishi Rayon Co., Ltd., acrylic resin) 10.00 Perex OTP O, 500il
Red 5B (manufactured by Orient Chemical Co., Ltd.) 0.01
The above components were mixed and dispersed in a ball mill for 40 hours to obtain a colored correction ink composition.

The composition obtained in this way does not stain the coated surface even when applied to lines drawn with water-based type ink or oil-based type ink, and a vividly colored coating film with high hiding power is obtained. , it was possible to fix it.

Also, this composition was left in a constant temperature bath at 50°C, and on the first day,
Coulter N
-4 particle size distribution meter to determine stability over time. The results are shown in Table 1.

Furthermore, for this composition, using a sedimentation tube, 50 ° C.
A forced sedimentation test was conducted in 65% RH to determine the sedimentation state. The results are shown in Table 2.

Comparative Example 1 Synthetic iron oxide pigment Ma was used instead of the oil-soluble dye of Example 1.
A correction ink composition was prepared in the same manner as in Example 1, except that pico Yello (manufactured by Titan Kogyo Co., Ltd., trade name) was used, and the obtained composition was aged in the same manner as in Example 1. The stability and sedimentation behavior were determined. The respective results are shown in Tables 1 and 2.

Comparative Example 2 Synthetic iron oxide pigment Ma was used instead of the oil-soluble dye of Example 2.
A correction ink composition was prepared in the same manner as in Example 2, except that pico Red (manufactured by Titan Kogyo Co., Ltd., trade name) was used, and the obtained composition was stabilized over time in the same manner as in Example 2. The properties and sedimentation behavior were determined. The respective results are shown in Tables 1 and 2.

Table 1 From these tables, it can be seen that the comparative example using a pigment as a coloring agent causes heteroaggregation, whereas the example using an oil-soluble dye for coloring is stable over time. I understand.

Claims (1)

[Claims] 1 (A) organic solvent, (B) titanium oxide white pigment, (C
) An ink composition for color correction comprising an acrylic ester resin and (D) an oil-soluble coloring dye.