JP2002146259A - Solid drawing material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a solid drawing material exhibiting brilliant color developability in handwriting while maintaining practical strength. SOLUTION: The solid drawing material comprises a long-chain acylaminosulfonate represented by formula (1) (wherein R1 is a 7-35C long-chain alkyl group; R2 is H or methyl group; (n) is an integer of 1-3; and M is a mono- to tri-valent metal).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crayon, a pastel, a colored pencil lead, and the like, which are obtained by kneading and molding a colorant with a binder, a body material, etc., and which are worn by being rubbed against a drawing object. The present invention relates to a solid drawing material that forms a drawing mark by attaching a coloring agent to a drawing target.

[0002]

2. Description of the Related Art In general, solid drawing materials such as crayon, pastel, color pencil lead and the like include coloring agents such as organic pigments and inorganic pigments, binders such as clay, organic bentonite, carboxymethyl cellulose and polyethylene resin, talc and mica. ,
Body materials such as calcium carbonate, and carnauba wax,
It is obtained by kneading polyethylene wax and oils and fats, and molding using a solvent such as water and methyl ethyl ketone (MEK) as necessary.

[0003] Such a solid drawing material is self-wearing and forms a trace of application, so that in order to obtain a good writing quality, the wearability is promoted. When it becomes easy to perform, the strength (bending strength) as a molded article becomes weak.

[0004] For example, it is known that, in order to improve the writing taste with a colored pencil lead, it is possible to use a low-melting wax or an oil or fat to make itself soft and easy to wear. However, even if the coloring property is improved, it tends to be broken in strength. On the other hand, if a resin or a wax having a high melting point is used to make the film hard to break, the resin is hardly worn, so that the adhesiveness to the paper surface is reduced and the color developability is reduced.

In Japanese Patent Publication No. 5-58467, an Nω-long-chain acyl basic amino acid is proposed as having both the above-described writing taste and the difficulty in breaking. Specific examples of Nω-long-chain acyl basic amino acids include Nε-lauroyl lysine and Nε-palmitoyl lysine, but these basic amino acids are highly reactive substances due to amino groups in the molecule. The lubricant used in the solid drawing material, such as a binder or a wax, reacts to lose the cleavage properties of the particles, and the solid drawing material has a hard and hard-to-wear structure, and the writing quality and the coloring of coating marks are low. There was a problem that it would be bad.

[0006]

Accordingly, an object of the present invention is to provide a solid drawing material having both practical strength and vivid coloration of handwriting.

[0007]

Means for Solving the Problems The present inventors have conducted intensive studies to achieve the above object, and as a result, have found that a solid drawing material containing a long-chain acylaminosulfonic acid salt represented by the following general formula (1) has a high strength. It was also found that the coloring of handwriting was excellent, and the present invention was completed.

That is, the present invention provides: 1) A solid drawing material comprising a long-chain acylaminosulfonic acid salt represented by the following general formula (1).

[0009]

Embedded image (However, R1 is a long-chain alkyl group having 7 to 35 carbon atoms, R2
Is hydrogen or a methyl group, n is an integer of 1 to 3, M is monovalent,
Represents divalent and trivalent metals. 2) The present invention provides the solid drawing material, wherein the solid drawing material is a non-fired pencil lead.

Hereinafter, the present invention will be described in detail. The method for producing the long-chain acylaminosulfonic acid salt represented by the general formula (1) used in the present invention is not particularly limited, but is usually
It is produced by condensing an acid halide of a saturated and / or unsaturated long-chain fatty acid with an aminosulfonic acid in the presence or absence of a base, and isolated as a desired metal salt.

The long-chain fatty acid constituting the long-chain acylaminosulfonic acid salt represented by the general formula (1) used in the present invention includes, for example, octanoic acid, decanoic acid, undecanoic acid, lauric acid, tridecanoic acid, myristine Saturated and / or unsaturated fatty acids having 8 to 36 carbon atoms represented by acids, pentadecanoic acid, palmitic acid, heptadecanoic acid, stearic acid, nanodecanoic acid, oleic acid, linoleic acid and the like are used. Palm oil, palm oil, and the like, which are mixtures thereof, can also be used.

The aminosulfonic acid constituting the long-chain acylaminosulfonic acid salt represented by the general formula (1) used in the present invention is, for example, 2-aminoethanesulfonic acid (taurine), 2- (methylamino) ethane Sulfonic acid (N
-Methyltaurine) and the like.

The long-chain acylaminosulfonic acid salt represented by the general formula (1) used in the present invention is a lithium salt,
Examples thereof include alkali metal salts such as sodium salt and potassium salt, alkaline earth metal salts such as magnesium salt, calcium salt and barium salt, and other aluminum salts and zinc salts. Among them, calcium salts and aluminum salts are preferable because they have the property of producing white plate-like crystals having high wettability.

Specific examples of the long-chain acylaminosulfonic acid salt represented by the general formula (1) used in the present invention include octanoyltaurine Li salt and octanoyltaurine Na salt.
Salt, octanoyl taurine K salt, octanoyl taurine Ca salt, octanoyl taurine Mg salt, octanoyl taurine Ba salt, octanoyl taurine Al salt, octanoyl taurine Zn salt, octanoyl methyl taurine Li
Salt, octanoylmethyltaurine Na salt, octanoylmethyltaurine K salt, octanoylmethyltaurine Ca
Salt, octanoylmethyltaurine Mg salt, octanoylmethyltaurine Ba salt, octanoylmethyltaurine A
1 salt, octanoylmethyltaurine Zn salt, decanoyltaurine Na salt, decanoyltaurine K salt, decanoyltaurine Li salt, decanoyltaurine Ca salt, decanoyltaurine Mg salt, decanoyltaurine Ba salt, decanoyltaurine Al Salt, decanoyl taurine Zn salt, decanoyl methyl taurine Na salt, decanoyl methyl taurine K salt, decanoyl methyl taurine Li salt, decanoyl methyl taurine Ca salt, decanoyl methyl taurine Mg
Salt, decanoylmethyltaurine Ba salt, decanoylmethyltaurine Al salt, decanoylmethyltaurine Zn salt,

Lauroyltaurine Na salt, lauroyltaurine K salt, lauroyltaurine Li salt, lauroyltaurine Ca salt, lauroyltaurine Mg salt, lauroyltaurine Ba salt, lauroyltaurine Al salt, lauroyltaurine Al salt, lauroyltaurine Zn salt, lauroylmethyl Taurine Na salt, Lauroylmethyltaurine K salt, Lauroylmethyltaurine Li salt, Lauroylmethyltaurine Ca salt, Lauroylmethyltaurine Mg
Salt, lauroylmethyltaurine Ba salt, lauroylmethyltaurine Al salt, lauroylmethyltaurine Al salt,
Lauroyl methyl taurine Zn salt, myristoyl taurine Na salt, myristoyl taurine K salt, myristoyl taurine Li salt, myristoyl taurine Ca salt, myristoyl taurine Mg salt, myristoyl taurine Ba salt, myristoyl taurine Al salt, myristoyl taurine Zn salt
Salt, myristoyl methyl taurine Na salt, myristoyl methyl taurine K salt, myristoyl methyl taurine Li
Salt, myristoylmethyltaurine Ca salt, myristoylmethyltaurine Mg salt, myristoylmethyltaurine B
a salt, myristoyl methyl taurine Al salt, myristoyl methyl taurine Zn salt,

A palmitoyl taurine Na salt, a palmitoyl taurine K salt, a palmitoyl taurine Li salt, a palmitoyl taurine Ca salt, a palmitoyl taurine Mg salt,
Palmitoyl Taurine Ba Salt, Palmitoyl Taurine A
l salt, palmitoyl taurine Zn salt, palmitoyl methyl taurine Na salt, palmitoyl methyl taurine K salt,
Palmitoylmethyltaurine Li salt, Palmitoylmethyltaurine Ca salt, Palmitoylmethyltaurine Mg
Salt, Palmitoylmethyltaurine Ba salt, Palmitoylmethyltaurine Al salt, Palmitoylmethyltaurine Z
n salt, stearoyl taurine Na salt, stearoyl taurine K salt, stearoyl taurine Li salt, stearoyl taurine Ca salt, stearoyl taurine Mg salt, stearoyl taurine Ba salt, stearoyl taurine Al salt,
Stearoyl taurine Zn salt, stearoyl methyl taurine Na salt, stearoyl methyl taurine K salt, stearoyl methyl taurine Li salt, stearoyl methyl taurine Ca salt, stearoyl methyl taurine Mg salt, stearoyl methyl taurine Ba salt, stearoyl methyl taurine Al salt, stearoyl methyl taurine Zn salt, cocoyl taurine Na salt, cocoyl taurine K salt, cocoyl taurine Li salt, cocoyl taurine Ca salt, cocoyl taurine Mg salt, cocoyl taurine Ba salt, cocoyl taurine Al salt, cocoyl taurine Zn salt, cocoyl methyl taurine Na salt, cocoil taurine Methyl taurine K salt, cocoyl methyl taurine Li salt, cocoyl methyl taurine C
a salt, cocoylmethyltaurine Mg salt, cocoylmethyltaurine Ba salt, cocoylmethyltaurine Al salt, cocoylmethyltaurine Zn salt and the like. These may be used alone or in combination of two or more.

The amount of the long-chain acylaminosulfonic acid salt represented by the general formula (1) used in the present invention is not particularly limited, but is preferably 2 to 50% by weight based on the total amount excluding the volatile solvent. Is used in an amount of 5 to 40% by weight. If the amount used is less than 2% by weight, practical strength may be obtained but color development may not be obtained. Also, 50
When the amount is more than the weight%, the color developability is obtained, but the strength tends to be largely reduced.

The solid drawing material used in the present invention includes, in addition to the long-chain acylaminosulfonate represented by the general formula (1), a binder such as a resin for shaping, talc, Various waxes and fats and oils such as stearic acid for applying a constitutional agent such as mica, a coloring agent and the like to the paper surface can be blended.

The binder used in the present invention is not particularly limited, and specific examples thereof include nitrified cotton, polystyrene, polyethylene, polypropylene, polybutene, polybutadiene, polymethylpentene, polystyrene butadiene, polyvinyl chloride, polyvinyl acetate, Polymethyl acrylate, polymethyl methacrylate, polyvinylidene chloride,
Polytetrafluoroethylene, AS resin, ABS resin,
Ethylene-tetrafluoroethylene copolymer, nitrocellulose, ethylcellulose, methylcellulose, cellulose acetate, carboxymethylcellulose, hydroxyethylcellulose, polyethylene glycol, polypropylene glycol, polyacrylamide, polyacrylic acid, polyvinyl alcohol, polyvinylpyrrolidone, polyvinyl ether, maleic acid polymerization Products, polyester polyol resins, polyester polyether resins, polyethylene terephthalate, polybutylene terephthalate, and the like. These may be used alone or in combination of two or more.

The extender used in the present invention is not particularly limited, and talc, calcium carbonate, mica, kaolin clay, boron nitride, graphite fluoride, potassium titanate whisker, calcium carbonate whisker, titanium dioxide whisker, magnesium sulfate Whiskers, calcium sulfate whiskers, aluminum sulfate whiskers, and the like. These may be used alone or in combination of two or more.

The colorant used in the present invention is not particularly limited, and various natural and synthetic dyes and various inorganic and organic pigments can be arbitrarily used. As the dye, Japananol Fast Black D Conc (C.I.
Direct Black 17), Water Black 100
L (19), Water Black 200-L (1)
9), Water Black # 7 (19), Kaya Set Black W9 (19), Direct Fast Black B (22), Direct Fast Black AB (3)
2), Direct Deep Black EX (38), Direct Deep Black (38 similar products), Direct Fast Black Conch (51), Kayalas Sprague VGN (71), Kayak Direct Brilliant Yellow G (CI) Direct Yellow), Direct Fast Yellow 5GL (26), Eizen Primula Yellow GCLH (44), Direct Fast Yellow R
(50), Eisen Direct Fast Red FH
(CI Direct Red 1), Nippon Fast Scarlet GSX (4), Direct Fast Scarlet 4BS (23), Eisen Direct Durin BH (31), Direct Scarlet B (3)
7), kayak direct scarlet 3B (39),
Aizen Primula Bin Conch 2BLH (75), Sumilite Red F3B (80), Aizen Primula Red 4BH (81),

Kayalas Sprarubin BL (83), Kayalas Light Red F5G (225), Kayalas Light Red F5B (226), Kayalas Light Rose F
R (227), Direct Sky Blue 6B (C.I.
I. Direct Blue 1), Direct Sky Blue 5
B (15), Benzo Brilliant Sky Blue 8GS
(41), Sumilite Supra Blue BRR Conc (71), Dibogen Turquoise Blue S (86),
Water Blue # 3 (86), Kayara Star Koizu Blue GL (86), Daiwa Blue 215H (8)
7), Kayalas Spral Blue FFRL (108),
Direct dyes such as Kayalas Spral Blue FF2GL (same as 106), Kayalas Splatter Koizu Blue FBL (same as 199), Acid Blue Black 10B (CI Acid Black 1), Nigrosine (same as 2), Water Black R455 (2), Water Black R51
0 (2), Suminol Milling Black 8BX (2
4), Kayanol milling black VLG (26),
Kayanol Milling Black BR Conc (31), Mitsui Nylon Black GL (52), Aizen Opal Black WH Extra Conc (52), Sumilan Black WA (52), Ranyl Black BG Extra Conc (107), Kayanol milling black T
LB (109), Suminol Milling Black B (109), Kayanol Milling Black TLR (11)
0), Eisen Opal Black New Conch (11
9), Water Black 187-L (154), Acid Yellow # 10 (CI Acid Yellow 1),
Kayak Acid Brilliant Flavin FF (7:
1), Kayasil Yellow CG (17), xylene light yellow 2G140% (17), Suminol Leveling Yellow NR (19),

Water Yellow # 1 (23), Daiwada Tolazine (25), Kayaktor Tolazine (2)
3), Suminol Fast Yellow R (25), Diacid Light Yellow 2GP (29), Suminol Milling Yellow 0 (38), Suminol Milling Yellow M
R (42), Water Yellow # 6 (42), Kayanol Yellow NFG (49), Suminol Milling Yellow 3G (72), Suminol Fast Yellow G
(61), Suminol Milling Yellow G (78),
Kayanol Yellow N5G (110), Suminol Milling Yellow 4G 200% (141), Kayanol Yellow NG (135), Kayanol Milling Yellow 5GW
(127), Kayanol Milling Yellow 6GW (1
42), Sumitomo Fast Scarlet A (CI Acid Red 8), Kayak Silk Scarlet (9), Solar Rubin Extra (14), Daiwa New Koksin (18), Water Scarlet (18), Daiwa Red 102 (18), Eisenbon Saw RH (26), Daiwa Red 2 (27), Suminol Leveling Brilliant Red S3B (3)
5), Kayasilrubinol 3GS (37), Eisenerythrosin (51), Kayaquaid Rhodamine F
B (52), Daiwa Red No. 106 (52), Suminol Leveling Rubinol 3GP (57),

Diacid Alizarin Rubinol F3G
200% (82), alizarin rubinol 5G (8)
3), Aizenosine GH (87), Water Red # 2 (87), Daiwa Red 103WB (87),
Water Pink # 2 (92), Eisen Acid Phloxine PB (92), Daiwa Red No. 104 (9)
2), Rose Bengal (94), Kayanol milling scarlet FGW (111), Kayanol milling rubin 3BW (129), Sumino milling brilliant red 3BN conc (131), Sumino milling brilliant red BS (110) 138), Eisen Opal Pink BH (186), Suminol Milling Brilliant Red B Conc (249), Kayak Acid Brilliant Red 3BL (254), Kayak Acid Brilliant Red BL (265), Kayanol Milling Red GW (186) 276), Mitsuiacid Violet 6BN (17), Water Violet # 1 (49), Ink Violet L10 (4)
9), Sumitomo Patent Pure Blue VX (CI Acid Blue 1), Water Blue # 106 (1), Patent Blue AF (7), Water Blue # 9 (9), Daiwa Blue No. 1 (1) 9), Ink Blue L20 (9), Spranol Blue B (15), Water Blue # 116 (15), Orientable Blue OBX (22), Suminol Leveling Blue 4GL (23), Mitsui Nylon Fast Blue G
(25), Kayasil Blue AGG (40), Kayasil Blue BR (41), Mitsui Ali Zyrin Safilol SE (43), Suminol Leveling Sky Blue R Extra Conch (62),

Mitsui Nylon Fast Sky Blue R
(Id. 78), Sumitomobrilliant Indocyanine 6B
h / e (83), Sandran cyanine N-6B350
% (90), Water Blue 105 (90),
Orient Soluble Blue OBB (93), Spranol Cyanine 7BF (100), Sumitomobrilliant Blue 5G (103), Acid Blue (10)
3), Asilane brilliant blue FFR (10
4), Kayanol Milling Ultra Sky SE (11
2), Kayanol milling cyanine 5R (113);
Eisen Opal Cyanine 2GLH (158), Daiwa Guinea Green B (CI Acid Green 3),
Assid brilliant milling green (9), Daiwa green # 70 (16), cananol cyanine green G (25), Suminol milling green G
(Id. 27), acid dyes such as Water Orange # 17 (CI Acid Orange 56), Water Yellow # 2 (CI Food Yellow 3), Food Yellow No. 5 (CI Food Yellow 3) ), Food Red No. 3 (C.I.
I. Food dyes such as Food Red 14), Food Blue No. 2 (CI Acid Blue 74), Food Green No. 2 (CI Acid Green 5), Malachite Green (CI 42000), Victoria Blue FB (C.
I. 44045), methyl violet FN (CI.
42535), Rhodamine F4G (CI. 4516)
0) and basic dyes such as rhodamine 6GCP (CI. 45160).

As a pigment, Special Black is used.
6, S170, S610, 5, 4, 4, 4A, 550, 35, 250, 100, Printex
150T, U, V, 140U, 140V, 95, 90, 85, 80, 75, 55, 4
5, P, XE2, L6, L, 300, 3
0, 3, 35, 25, 200, A, G (all made by Degussa Japan KK), # 2400B, # 2
350, # 2300, # 2200B, # 1000, # 9
50, # 850, # MCF88, MA600, MA10
0, MA7, MA11, # 50, # 52, # 45, # 4
4, # 33, # 32, # 30, CF9, # 20B, # 4
000B (Mitsubishi Chemical Corporation), MONARCH
1300, 1100, 1000, 900, 8
80, 800, 700, MOGUL L, REGA
L 400R, 660R, 500R, 330R,
Same 300R, Same 99R, ELFTEX 8, Same 12, B
LACK PEARLS 2000 (manufactured by Cabot Co. Ltd., USA), Raven 7000, 57
50, 5250, 5000, 3500, 200
0, 1500, 1255, 1250, 120
0, 1170, 1060, 1040, 103
5, 1020, 1000, 890H, 890,
850, 790, 780, 760, 500,
450, 430, 420, 410, 22, 16, 16, 825 Oil Beads, H2
Carbon blacks such as 0, C, Conductex 975, 900, and SC (all manufactured by Colombian Carbon Japan Co., Ltd.);

KA-10, 10P, 15 and 20,
30, 35, 60, 80, 90, KR-31
0, 380, 460, and 480 (all manufactured by Titanium Industry Co., Ltd.), titanium oxide such as P25 (manufactured by Nippon Aerosil Co., Ltd.), BS-605, and 607 (all manufactured by Toyo Aluminum Co., Ltd.) ), Bronze powders P-555 and P-77
7 (above, manufactured by Nakajima Metal Foil Industry Co., Ltd.), bronze powder 3L5, 3L7 (above, manufactured by Fukuda Metal Foil Industry Co., Ltd.)
And inorganic pigments such as black iron oxide, yellow iron oxide, red iron oxide, ultramarine, navy blue, cobalt blue, chrome green, chromium oxide, etc., Hansa A-10G, 5G, 3G, 4G, GR, A, Benzidine Yellow, Permanent Yellow NCCG, Tartrazine Lake, Quinoline Yellow, Sudanese 1, Permanent Orange, Indus Ren Brilliant Orange GN, Permanent Brown FG, Para Brown, Fire Red,
Organic pigments such as Brilliant Carmine 6B, Bordeaux 5B, Thioindigo Red, Fast Violet B, Dioxane Violet, Alkaline Blue Lake, Phthalocyanine Blue, Indigo, Acid Green Lake, and Phthalocyanine Green. In addition, inorganic fluorescent pigments such as zinc sulfide, zinc silicate, zinc cadmium sulfate, calcium sulfide, strontium sulfide, and calcium tungstate may be used.

In the present invention, besides the above, natural waxes such as carnauba wax, beeswax and wood wax, synthetic waxes such as polyethylene wax, montan wax, paraffin wax, zinc stearyl ketone and microcrystalline wax, Various metal salts of stearic acid such as stearic acid, aluminum stearate, magnesium stearate, calcium stearate, and, if necessary, plasticizers such as diallyl phthalate, dimethyl phthalate, butyl phthalyl butyl glycolate, and propylene carbonate. Can be used.

In the present invention, when the above materials are molded as a solid drawing material, these blending materials are optionally blended, and depending on the characteristics of the binder used, polar solvents such as water and alcohol, and non-polar solvents such as MEK and toluene. While optionally using a neutral solvent, a method such as stirring, pulverizing with a Hensyl mixer, a ball mill, a roll mill, or kneading with a disperser, kneading with a crayon or a pass while heating and melting, and then cooling and molding, In the case of a colored pencil lead, the material with a small amount of solvent remaining is loaded into a cylinder for a vertical extruder, the material in the cylinder is extruded with a hydraulic piston, and the solvent contained is forced using a dryer. Existing methods, such as drying, can be adopted.

In addition, as long as the effect of the long-chain acylaminosulfonic acid salt used in the present invention is not hindered, N
N-long chain acyl amino acids such as ε-lauroyl lysine, N-lauroyl aspartic acid β-stearyl ester and esters thereof, and secondary amides such as N-lauroyl-β-alanine calcium and N-myristoyl-β-alanine calcium It may be used in combination with an acyl amino acid salt or the like.

[0031]

Hereinafter, the present invention will be described based on examples.
The present invention is not limited only to the embodiments.

Production Example (Synthesis of N-lauroyl taurine calcium) 13.8 g of taurine was dissolved in 70 g of water, and 21.8 g of triethylamine was added.
A 3 g condensation reaction was performed at room temperature for 3 hours while 3 g of the mixture was charged dropwise, followed by aging at 40 ° C. for 2 hours. 22.
2 g of calcium hydroxide is charged in powder form, and at the same temperature for 2 hours
A salt exchange was performed. Thereafter, the temperature of the reaction mass was raised, and triethylamine was distilled off. Then, the reaction mass was cooled, filtered, washed, and dried to obtain white crystals of N-lauryl taurine Ca salt.

Example 1 Nitrocellulose (resin) 15 parts by weight Calcium N-lauroyl taurate 30 parts by weight Stearic acid 3 parts by weight Montan wax 10 parts by weight Propylene carbonate (plasticizer) 3 parts by weight Phthalocyanine green (colorant) 39 parts by weight MEK (solvent) 100 parts by weight After mixing the above materials, dispersing with a Hensyl mixer, kneading and further dispersing with three rolls, adjusting the solvent content, molding with a vertical extruder, and completely removing the remaining solvent content. It was dried at 80 ° C. for 8 hours to remove, and a green colored pencil lead having a diameter of about 1.3 mm was obtained.

Examples 2 to 10 The amount of N-lauroyl taurine calcium used was 1, 2,
The same operation as in Example 1 was performed except that the amount was changed to 4, 15, 45, 50, 65, 70, and 75 parts by weight, to obtain a green colored pencil lead.

Comparative Example 1 The same operation as in Example 1 was carried out except that N-lauroyl taurine calcium was changed to Nε-lauroyl lysine.
A green colored pencil lead was obtained.

The bending strength (unit: MPa) and the density (unit: D) as a substitute for the color developing property of the color pencil cores obtained in the above Examples and Comparative Examples were measured based on JIS S6005. The results are shown in Table 1.

[0037]

[Table 1]

[0038]

By using the long-chain acylaminosulfonate of the present invention, it is possible to obtain a solid drawing material with little decrease in strength and improved color development.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4J039 AB02 AD01 AD03 AD06 AD09 AD12 AD15 AD20 AE07 BA04 BA16 BA18 BA23 BC50 BC54 BC77 BC79 BE01 BE02 DA04 DA05 EA21 EA48 GA30 GA31 GA32

Claims (2)

[Claims] 1. A solid drawing material comprising a long-chain acylaminosulfonic acid salt represented by the following general formula (1). Embedded image (However, R1 is a long-chain alkyl group having 7 to 35 carbon atoms, R2
Is hydrogen or a methyl group, n is an integer of 1 to 3, M is monovalent,
Represents divalent and trivalent metals. ) 2. The solid drawing material according to claim 1, wherein the solid drawing material is a non-fired pencil lead.