JPS6262873A - Solid picture drawing material - Google Patents

Abstract

PURPOSE:A solid picture drawing material, consisting of a pigment, molding resin, wax, extender and a specific amount of terpenic resin (derivative) and having remarkably improved concentration on the picture drawing surface while retaining the strength of the individual solid picture drawing material. CONSTITUTION:A solid picture drawing material consisting of (A) preferably 3-25wt% pigment, e.g. carbon black or titanium oxide, (B) preferably 20-40wt% molding resin, e.g. PE, PP or ethylene-vinyl acetate copolymer, (C) preferably 40-60wt% wax, e.g. hydrogenated hardened oil or paraffin wax, (D) an extender, e.g. talc or calcium carbonate, and (E) preferably 0.1-20wt% terpenic resin and/or terpenic resin derivative, e.g. terpene-phenol copolymer.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a solid drawing material with excellent density and strength.

(Prior Art and its Problems) Conventionally, as methods for improving the concentration of solid drawing materials, the following methods are known: (1) Reducing the amount of molding resin; (2) Increasing the amount of wax; (2) Adding a stabilizer.

However, the above three methods all have the problem that the strength of the solid drawing material decreases.

(Means for Solving the Problems) The present inventor has conducted extensive research in order to solve the above-mentioned problems and obtain a solid drawing material in which the density of the painted surface is improved without reducing the strength of the solid drawing material itself. By using a specific amount of terpene resin and/or terpene resin derivative in one composition.

The present invention was completed based on the discovery that a solid drawing material with improved density on the painted surface can be obtained while maintaining the necessary strength.

That is, the present invention comprises a pigment, a molding resin, an extender, and a terpene resin and/or a terpene resin in an amount of 0.1 to 20% based on the total amount of the drawing material.
or a terpene resin derivative.

(Function) It is not clear why the solid drawing material of the present invention can improve the density of the painted surface while maintaining the necessary strength, but it is speculated as follows.

The terpene resin and terpene resin derivative used in the present invention are resin modifiers that impart tackiness to the molding resin, so they impart tackiness to the drawing material.

The adhesion of the drawing material to the drawing surface such as paper increases,
Therefore, it is thought that the amount of peeling of the drawing material increases during drawing and the density improves, and since terpene resin and terpene resin derivatives are solid at room temperature, it is thought that the strength of the drawing material is maintained.

(Structure of the invention) Next, each component of the present invention will be explained.

Pigments are used as a coloring agent, and various conventionally known pigments such as carbon black, titanium oxide, phthalocyanine blue, Wasoting red, and Hansa yellow can be used, and these can be used alone or in combination. Can be used. The amount used varies greatly depending on the color, but in consideration of color development and strength, it is preferably 3 to 25% by weight based on the total amount of the drawing material.

As the wax, hydrogenated hydrogenated oil, paraffin wax, polyethylene wax, stearic acid derivatives, vaseline, metal soap, carnauba wax, wood wax, beeswax, etc. can be used.

These can be used alone or in combination.

The amount to be used should be determined by considering color development and strength.

It is preferable that the amount is 41 to 60% based on the total amount of the drawing material.

The main purpose of molding resin is to improve the strength of the solid drawing material itself, and it is also used to enable drawing marks to be erased with a regular eraser.

Polyethylene, polypropylene, ethylene-monovinyl acetate copolymer, etc. can be used, and these can be used alone or in combination.

The amount used is preferably 20 to 40% by weight based on the total amount of the drawing material in consideration of color development and strength.

Terpene resins and terpene resin derivatives are important to the present invention and are used as modifiers for resins, and as terpene resin derivatives.

Hydrogenated terpene resin (Clearon P, Yasuyu Kogyo JLT)
J! jfi! ), inflected terpene polymer (YS Resin Z.

(manufactured by Yasuyu Kogyo ■), terpene-phenol copolymer (
There is YS Polyster, manufactured by Yasuyu Kogyo (Kiki), and these terpene resins and terpene resin derivatives can be used singly or in combination, and the preferred amount is α1 to 20% by weight based on the total amount of the drawing material.

If the amount used is less than 0.1% by weight based on the total amount of iW art supplies,
It is not effective as a resin modifier.

If more than 20% by weight is used, the releasability when molded into a solid drawing material will be poor, which will be a big disadvantage in manufacturing.

As the dispersant, talc, calcium carbonate, clay, silica stone, etc. can be used, and these can be used alone or in combination.

In addition to the above-mentioned components, liquid oil 9 dispersants, wetting agents, etc. can be used as appropriate.

Next, the method for manufacturing the solid drawing material of the present invention will be briefly explained. The above-mentioned components are mixed in required amounts.

The mixture is heated and stirred, and if necessary kneaded using a kneading machine such as a roll mill. The resulting mixture is poured or press-fitted into a mold in a molten state, and is cooled, solidified, and released from the mold to obtain a solid drawing material.

(Example) The present invention will be explained in more detail below using actual Mr. rlJ, and in the examples, "parts" indicate "parts by weight."

Example 1 Carbon black MA100 (three (manufactured by Ryo Kasei) 5.0 parts Extremely hardened beef tallow oil (hydrogenated hardened oil).

(manufactured by Kokura Gosei ■) 2 ZO parts 130° paraffin (manufactured by Tonen Petrochemical ■) 8.6 parts Yellow petrolatum (Japanese Pharmacopoeia, Imported Light Chugai Trading ■) 10.9 parts Zinc stearate (Sakai Chemical Industries ■) ZO part NUO copolymer DQDJ-1830 (ethylene vinyl acetate copolymer, manufactured by Nippon Unicar Co., Ltd.) 2aOgND talc (manufactured by Nippon Talc Kogyo ■) 155 parts YS resin PX #10
0 (Milpen resin, manufactured by Yasushi Oil Industry Co., Ltd., manufactured by Kiki) IQ, 0 parts The above components were mixed, heated and stirred, then mixed in a heating roll mill, and poured into a mold.

The mixture was cooled, solidified, and released from the mold to obtain a black solid drawing material.

(Comparative example 1) Extract YS resin PX#100 from Example 1.

A black solid drawing material was obtained in the same manner as in Example 1 except for the above.

(Comparative Example 2) Instead of YS resin PX#100 in Example 1, O
A black solid drawing material was obtained in the same manner as in Example 1 except that , A, (dioctyl adipate) was used.

Example 2 Chronostitan KA-j 5 (titanium oxide, manufactured by Titan Kogyo Co., Ltd.) 21.2 parts 2005
(Natural wax mixture.

Made by Noda Wax ■) 15.8 parts beef tallow f
#A degree hydrogenated oil 12.2 parts 150° paraffin 8.1 parts Zinc stearate
6.1 parts NUO copolymer DQDJ-
183025, 4 parts ND talc
A white solid drawing material was obtained using 1.2 parts of Rialon P-115 (hydrogenated mill pen resin, manufactured by Yasushi Oil Industries Ltd.) in the same manner as in Example 1 except for io and o parts of each component.

(Comparative Example 3) Except for Clearon p-115 in Example 2, the others were as in Example 2.
A white solid drawing material was obtained in the same manner as above.

(Comparative Example 4) Instead of Clearon P-115 in Example 2, O, A
A white solid drawing material was obtained in the same manner as in Example 2 except for the following.

Example 3 Chronostitanium KA-15 (titanium oxide, manufactured by Titan Kogyo ■) 21.2 parts 200
5 (Natural wax mixture.

(manufactured by Nodawara 221) 15.8 parts hardened beef tallow oil 12.2 parts 130° paraffin a1 part zinc stearate
6,1 part NUO copolymer DQDJ-18
3025, 4 parts ND talc
1.2 parts YS Resin PX #100 5.0 parts Rialon P-85 (hydrogenated terpene resin, manufactured by Yasuyu Kogyo ■) 5.0 parts or more of each component was added in the same manner as in Example 1 to form a white solid drawing. I got the material.

(Effect of the invention) As described above, Examples 1, 2, and 3. The solid drawing materials obtained in Comparative Examples 1, 2, and 3.4 were left at room temperature for 24 hours after being released from the mold, and the results of each test were shown in Table 1.

Table-1 *1 Painted surface density test example 1. The black solid drawing material obtained in Comparative Example 1.2 was applied to drawing paper, and the white solid drawing material obtained in Examples 2 and 5 was applied to black drawing paper at a drawing pressure of 1.0 ±. 0.2
A piece of paper painted once with Ky is colorimeter HVC! -100(
■The v value was measured using Murakami Color Research Co., Ltd.).

In addition, for black, a small value indicates the density control.

In white, a large V value indicates a high density.

*2 Bending strength test Measured using the test method specified in JIS-86026.

As described above, the solid drawing material of the present invention is excellent in that the density of the 1 m drawing surface is significantly improved while maintaining the strength of the solid drawing material itself.

Claims (1)

[Claims] Pigment, molding resin, wax, extender, terpene resin and/or 0.1 to 20% by weight based on the total amount of drawing material.
or a terpene resin derivative.