JPS6357681A - Solid colorant - Google Patents

Abstract

PURPOSE:To obtain a solid colorant which has high breaking strength, enables smooth drawing or writing, and tends to build up heavily on a paper, by molding a mixture of zeolite with a specified inorganic extender, burning the molded object to give a porous sinter, and adding a coloring matter component to this sinter. CONSTITUTION:10-80pts.wt. zeolite as bonding agent is mixed with 20-90pts. wt. of one or more inorganic extenders selected from among kaolin, clay, talc, BN, mica, and graphite, 1-10pts.wt. water-soluble resin, and water, and the mixture is extrusion molded. The molded object is dried at 40-60 deg.C for about 24hr, and burned in an oxidizing atmosphere at 800-1,000 deg.C for about 2hr to give a porous sinter. This sinter is immersed in a solution of an oil-soluble dye or a particulate pigment in a non-volatile liquid (e.g., diethylene glycol monoethyl ether) to infiltrate 15-40vol% dye or pigment into the sinter.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Application This invention relates to a solid colorant. More specifically, you can draw on the 4 paper-like surfaces like a storyboard, and if you cover the paper with a reinforcing material like wood and write on it, you can write like a pencil. Smoothly apply the shuttlecock to the surface to be applied.
Moreover, it relates to a solid coloring material that is difficult to break.

(Prior Art) Conventionally, a pencil lead has been widely used to write on blood, which has a soft surface like paper and has a relatively rough surface, and a conte has been widely used to write on blood.

(Learning points to be solved by the invention) When a coloring material such as a conte or pencil lead is applied to a paper surface, that is, it is colored beautifully with a large density, but when it is removed, the coloring material becomes brittle and easily breaks. Furthermore, it is desired that the smoothness of drawing and writing should be constantly improved.

(Means for Solving the Problems Between Nine Points) This invention uses zeolite as a binder for a coloring agent, and a $1 extender consisting of a group of kaolin, clay, talc, boron nitride, mica, and graphite. IPJ or 28! Knead the ingredients with suitable kidney water, mold, and make 80
0～】000" Porous !'r sintered body obtained by firing at C,
As a pigment component, IiI'l material or! Please Ll'r
Attachment II allows you to draw smoothly or do the following.

It also supplies a solid coloring material that is hard to break.

(Example) In this invention, zeolite is used as an essential component as a binder. Zeolite is represented by the general formula %, but its crystal structure is A! ! ! ! The synthetic product has stable crystallinity, high whiteness, and low Mohs hardness, allowing for smooth writing, and is therefore effective in enhancing the effects of the present invention. This synthetic product is commercially available from Higashi 1 Soda Co., Ltd. under the trade names of Zeolum and Ku1-yobilder-2.

In the present invention, the compound is used in combination with zeolite, which is a binder. Examples of the a-agent include kaolin, clay, talc, boron nitride, unroku, and graphite. Among these, talc can be preferably used.

These inorganic extenders may function as a binder depending on the combination of other components, ratios, or firing conditions.

In this invention, the binder zeolite is 10 to 80 parts by weight (hereinafter, parts by weight are expressed as parts by weight), preferably 20·=7
0.2, Kaori〉' etc. IIkR14fl Rtom
Knead with the amount of water necessary for H, shape, smoke,
By firing at 800 to 1000'C, a porous sintered body of 1°0 parts is obtained. Heat resistant machine II before firing the sintered body
The solid colorant is mixed with a solid coloring material by adding a solid coloring agent, or by impregnating it with a non-volatile liquid solution of an oil-soluble dye or a non-volatile liquid dispersion of a particulate pigment after firing, but with less than 10 parts of zeolite. It is easy to break and the breakage is small. If there are more than 80 copies, there is no l?, but the expected quality is (.

It does not increase anymore, only the cost increases.

Even if the amount of the inorganic a agent is more than 90 parts or less than 20 parts, the amount of adhesion to the paper surface will be small.

Moreover, the breakage strength is reduced.

As the heat-resistant Ill-free pigment that can be used in this invention, any pigment that can be used in ordinary inks or paints, such as titanium oxide, red iron oxide, cobalt blue, and titanium yellow, can be used.

The pigment can be used in an amount of 5 to 30 parts, preferably 10 to 25 PJ, based on 100 parts of the sintered body. If the amount of pigment is more than 25 parts, both the amount of adhesion to the paper surface and the breaking strength will be small;
If the amount is less than that, the color development will be poor.

As the dye that can be dissolved in a non-volatile liquid and used in the present invention, any dye that can be normally used in ink can be used. Further, as the R particles used after being dispersed in a non-volatile liquid, any fine particle pigment that can be used in normal inks can be used, but fine particle pigments whose surfaces are treated with resin have good dispersion stability and are preferred. This g! The fine particle pigment is impregnated into the sintered body as a solution or dispersion of a nonvolatile liquid such as castor oil fatty acid butyl ester, diethylene glycol monoethyl ether, etc., and is saturated to be colored. Therefore, i of the dye solution or dispersion used is 15 to 40 volume of the sintered body v'9≦, and the dyeing 1 or R particle pigment paste used is appropriate to obtain the desired color development on the paper surface. All you have to do is adjust it.

In this invention, various additives as described below can be used as necessary.

Carboxymethylcellulose, for ease of molding
Water-soluble resins such as methylcellulose and polyvinyl alcohol can be used. These resins can be used together with water in an amount of 0 to 10 parts, preferably 3 to 8iIiJ, based on 100 parts of the sintered body. When the amount of FA fat is more than 10 parts, the breaking strength becomes low.

Also, inorganic compounds such as zinc oxide or magnesium oxide may be used to promote sintering.

There is a 2J residual glue method for applying the solid coloring material of this invention.

2 when using a heat-resistant IFI pigment as a pigment component
The pigment, zeolite, %, maple extender, and if necessary, a water-soluble resin are mixed in a mixing device such as a mixer or a kneader, and then water is added and kneaded using a kneader-13 wood roll mill or other mixing device. Extrusion molding at 40-60 @C
Dry for 4 hours and add aQL, I'tf, gNZ to an appropriate length.
It consists of 1.1 parts at 2 o'clock at medium T80o to tooo'c. Dip it in oil as needed to complete the coloring material.

When using an oil-soluble dye or Wt particle pigment as a coloring component, zeolite, an inorganic additive, and if necessary a water-soluble resin are mixed as described above, kneaded, molded, and dried. , and then fired to form a dark yellow sintered body. On the other hand, the oil-based dye slope is dissolved in a non-volatile liquid to obtain a solution, or the fine particle l1Ii material is dispersed in a non-volatile liquid to obtain a dispersion liquid, and this liquid is placed in a sealed container and the sintered body is immersed in it. ,
The inside of the container is depressurized to remove air bubbles in the sintered body, and the solution or dispersion is permeated through saturated lamination to form a solid coloring material.

Next, specific examples will be shown to further clarify the invention.

Practical IMI Natural Zeolite 403 (11 bundles powdered chemical technology, trade name Zeolite S "I" -30, Mordenite-based zeolite) Talc 40 parts Methyl cellulose 6 parts Titanium oxide
10 parts Zinc oxide Add 10 parts to a kneader and mix well. Then water
Add 30.9 and knead thoroughly in a wet state until uniform.

The thus obtained fn kneaded product was extruded using a die with a stop diameter of 1 FF3 and a side of 6 mm.
Cut with a hammer, dry at 50°C for 2.1 hours, and then dry at 900°C for 2 hours in an oxidizing atmosphere! , Ryokawa M'E2 A solid foil coloring material in the form of a container, which can be smoothly damaged and adheres well, was obtained. This coloring material had a high breaking strength (, J).

Example 2 Synthetic zeolite 50? l (manufactured by Toyo Soda, trade name Toyo and Ruder) Talc 30 parts Carboxymethylcellulose 7 parts Water
25 parts were mixed according to Example 1, kneaded, extruded using a die with a VL diameter of 3 mm, and dried to a temperature of 11.70 mm k K.
$R definitely, 21 at 850@C in an oxidizing atmosphere? Inter-fire to produce a white sintered body.

Dissolve 5 parts of red oil-soluble dye n in 100 parts of diethylene glycol monoethyl ether to obtain a red ffl liquid.

- Resistance: Fill a tightly sealed container with the molten residue, immerse it in the viscous substance, and reduce the pressure inside the container to 3 mm If g.
The sintered body was completely saturated with the solution over a period of time to obtain a red lead lead.

When this lead was attached to a knock-type holder, it was possible to write smoothly on high-quality paper, and it adhered well to the paper, resulting in highly colored handwriting.

This coloring material has high breakage strength and J s 5-s-60
The breaking load due to No. 24 was 600 g.

Example 3 Synthetic zeolite (manufactured by Toyo Soda, trade name Zeolum A-3) was used in place of the natural zeolite in Example 1, and the result was completely different from Example 1! : A coloring material was obtained.

This coloring material has breakage I+ according to JIS-3-6024! /
The top was 450 (l g), which was equivalent to the coloring material of Example 1, but the whiteness was greater and smoother writing was possible.

Example 4 Z 100 parts of diethylene glycol monoethyl ether and 10 parts of red fine particle pigment (manufactured by Sumika Riki→-, trade name Red 3 XIA-843, polyvinyl butyral processed organic 111Il material) and stirred at 70 C for 1 hour to form a uniform red dispersion.

The sintered body was immersed in a dispersion liquid in the same way as in the case of knee-jerk example 2, and a red coloring agent was added thereto.

The quality of this coloring material was 1+4- compared to that of Example 2.

(Effects of the Invention) According to this invention, as described in E, the conventional interlayer point is solved, the breakage strength is high, #a and #a can be written smoothly, and beautiful coloring is achieved, which is less likely to cause forgery to adhere to the paper surface. A coloring material is obtained.

h permit applicant Sakura Crepas Co., Ltd.

Claims (4)

[Claims] (1) 10 to 80 parts by weight of zeolite as a binder and 20 to 90 parts by weight of one or more inorganic extenders from the group of kaolin, clay, talc, boron nitride, mica, and graphite are kneaded and molded. 800-100
A solid coloring material characterized by adding a coloring component to a porous sintered body obtained by firing at 0°C. (2) The solid coloring material according to claim 1, in which a heat-resistant inorganic pigment is added as a coloring component before firing. (3) The solid coloring material according to claim 1, wherein a sintered body is impregnated with a nonvolatile liquid solution of an oil-soluble dye as a coloring component. (4) The solid coloring material according to claim 1, wherein a sintered body is impregnated with a nonvolatile liquid dispersion of fine particle pigment as a coloring component.