JP2601654B2 - Solid Fixture - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to handwriting of water-based ink such as a fountain pen, water-based felt-tip pen and water-based ballpoint pen, hand-written oil-based ink such as oil-based ballpoint pen and oil-based felt-tip pen, and a typewriter and printer. The present invention relates to a solid correction tool for performing printing and other concealment correction of printed matter.

(Conventional technology and its problems) Conventionally, when concealing and correcting handwriting of water-based ink or oil-based ink, and images printed by various printing methods, white pigment, binder resin, and volatile medium as a dispersion medium for dispersing this white pigment are used. A method has been adopted in which a correction liquid containing a solvent as a main component is used and applied to the correction portion, and after this coating film is completely dried, rewriting is performed on the coating film. However, when such a correction liquid is used, it takes ten to several seconds to several tens of seconds from the application of the correction liquid until the coating film is completely dried. It was not quick. Since this waiting time is the time required for the solvent to evaporate, it can be considered that a highly volatile solvent should be used to shorten this waiting time. Is basically impossible beyond the use of a solvent. Therefore, in order to eliminate the waiting time, it is only necessary to use a solvent. However, in that case, the coating film itself needs to be solid, and therefore, the coating film itself is solid and the coatable material is not used. The minimum requirement is that a white pigment is dispersed in the toner. Such solid and coatable materials include waxes generally used in crayons as drawing materials. However, when a white pigment is simply dispersed in the wax, the coating after coating is applied. Since the white pigment in the film is covered with wax, the coating film itself becomes hydrophobic. Therefore, when rewriting is performed using an aqueous ink on this coating film, the aqueous ink is not applied to the surface of the coating film. It was frustrated and could not draw clear handwriting, or it could not be rewritten.

(Means for Solving the Problems) The present invention has been made based on these circumstances, and while making full use of the advantages of a correction tool which is basically solid, the wax constituting the correction tool is not required. We conducted intensive studies with the aim of obtaining a solid correction tool that does not impair coatability and that does not repel water-based ink. The present inventors have found that the addition of a polymer substance is optimal, and finally completed the present invention.

That is, the gist of the present invention is a solid corrector comprising at least a wax, a white pigment, a superabsorbent polymer substance and / or a thickened gelling polymer substance of water.

 Hereinafter, the present invention will be described in detail.

The wax used in the present invention is not particularly limited since it serves as a dispersion medium for a white pigment described later and is used as a base material which can be applied. Natural wax and synthetic wax can be used. That is, as natural waxes, animal waxes, beeswax, whale wax,
Insect white wax, etc., plant-based, candelilla wax, carnauba wax, wood wax, etc., mineral-based, montan wax, ozokerite, etc., petroleum-based, paraffin wax, microcrystalline wax, etc. Is mentioned. As synthetic waxes, Fischer-Tropsch wax and its derivatives, low molecular weight polyethylene and its derivatives as synthetic hydrocarbons, montan wax derivatives, paraffin wax derivatives, microcrystalline wax derivatives, etc. as modified waxes, and aliphatic alcohols as modified waxes Cetyl alcohol and the like, stearic acid and the like as the acid, polyethylene glycol stearate and the like as the fatty acid ester, and caster wax and the like as the hydrogenated wax, respectively.

These waxes can be used alone or in combination of two or more kinds, and the amount of the wax used is based on the weight ratio of the white pigment of 1.
0.1-1.0 is preferred.

The white pigment used in the present invention is used for concealing handwriting and images, and various kinds of titanium oxide such as rutile type and anatase type can be used. Specifically, Tytone SR-1, R-650, R-3L, R-310, A-11
0, the same A-150, the same R-5N (all made by Sakai Chemical Industry Co., Ltd.),
Taipaque R-580, R-550, R-930, A-100, A-220 (all manufactured by Ishihara Sangyo Co., Ltd.), Kronos KR-31
0, KR-380, KR-480, KA-10, KA-20, KA-30,
(Both manufactured by Titanium Industry Co., Ltd.).

These white pigments can be used alone or as a mixture of two or more of them as appropriate. The amount of the pigment used is desirably 40% by weight or more and 90% by weight or less with respect to the total amount of the solid correction tool in consideration of the hiding power against handwriting. If the amount of the white pigment used is less than 40% by weight, the concealing power against handwriting and images becomes insufficient and characters and the like can be seen through. If it exceeds 90% by weight, the ability to form a coating film is undesirably reduced.

Regarding the high water-absorbing polymer substance and the water-thickening gelling polymer substance which are the characteristic features of the present invention, Sunwet IM- made of starch polyacrylate is used as the high water-absorbing polymer substance.
300MPS, IM-1000MPS (all manufactured by Sanyo Chemical Industries, Ltd.)
And Sumikagel SP-520 made of acrylic acid / vinyl alcohol copolymer, Sumikagel NP-1020 made of sodium acrylate polymer (all manufactured by Sumitomo Chemical Co., Ltd.), and the like.

As for the water-thickening gelled polymer substance, as a natural plant-based substance, seed polysaccharides such as guar gum, locust bean gum, quince seed gum, tara gum, etc., carrageenan, alginic acid, phaselan, seaweed such as agar, etc. Polysaccharides, resin polysaccharides such as arabinogalactan gum, arabic gum, tragacanth gum, and karaya gum; fruit polysaccharides such as pectin; , Zancote, Zanflo, curdlan, succinoglucan, No. 271 gum, schizophyllan, and the like. Natural animal products include gelatin, casein,
Albumin, shellac, and the like; and semi-synthetic products include starch derivatives, guar gum, locust bean gum derivatives, cellulose derivatives, and alginic acid derivatives. Synthetic products include polyvinyl alcohol, polyvinylpyrrolidone, and polyvinyl methacrylate. System, an acrylic system such as sodium polyacrylate, and polyethylene oxide. These superabsorbent polymer substances and water-thinning gelling polymer substances can be used alone or in combination of two or more, and the amount is preferably 0.1% by weight to 10% by weight of the total amount of the solid corrector. That is, if the amount is less than 0.1% by weight, much effect cannot be expected, and if the amount exceeds 10% by weight, the water resistance of the coating film is lost.

In addition, in the solid correction tool of the present invention, a filler, a coloring material, a fat, a resin, and the like can be added in addition to the above components.

(Function) According to the solid corrector of the present invention, the above-mentioned superabsorbent polymer substance and / or water-thickened gelling polymer substance is present in a uniformly dispersed state in the coating film after application. Therefore, when rewriting with a water-based ink on a coating film, the superabsorbent polymer material quickly absorbs the water in the water-based ink before repelling the water-based ink. Indicates that although the water-based ink is partially repelled and absorbed, there is a clear handwriting when it is visually observed, and therefore, it is suitable for the intended purpose.
In the case of a water-thickened gelled polymer substance, the water-based ink is thickened and gelled before repelling the water-based ink on the coating film, thereby deteriorating the fluidity of the ink. It is possible to meet the purpose of.

(Examples) Hereinafter, examples of the present invention will be described in detail.

Example 1 130 ° F paraffin wax 25 parts by weight Titanium oxide (Kronos KR-380, manufactured by Titanium Co., Ltd.) 70 parts by weight Ethylene-vinyl acetate copolymer (Evaflex 210, manufactured by Mitsui / Dupont Polychemical Co., Ltd.) 2.5) Superabsorbent polymer (Sanweto IM-1000MPS, manufactured by Sanyo Chemical Industries Co., Ltd.) 1.0 〃 White petrolatum 1.5 エ チ レ ン Ethylene-vinyl acetate copolymer added to wax and white petrolatum dissolved by heating After heating and dissolving, the titanium oxide and the superabsorbent polymer substance are added thereto and mixed. Next, this is mixed and dispersed by a heating three rolls,
It was poured into a mold and cooled to obtain a solid correction tool.

Example 2 Montan wax 16 parts by weight Titanium oxide (Taytone R-650, manufactured by Sakai Chemical Industry Co., Ltd.) 80 {ethylene-vinyl acetate copolymer (Evaflex 220, manufactured by Mitsui / Dupont Polychemical Co., Ltd.) 1.5} High-viscosity gelling polymer substance in water (Hibiswako 103 (cross-linked acrylic acid polymer), manufactured by Wako Pure Chemical Industries, Ltd.) 1.5 白色 White Vaseline 1.0 密 Example 3 Beeswax 30 チ タ ン Titanium oxide (Typek R- 580, manufactured by Ishihara Sangyo Co., Ltd.) 50 珪 素 Silicon oxide (Mizukasil P-801, manufactured by Mizusawa Chemical Industry Co., Ltd.) 6 〃 Ethylene-vinyl acetate copolymer (Ultracene 630, manufactured by Toyo Soda Kogyo Co., Ltd.) 3 {Thickening gelled high molecular substance of water (carboxymethylcellulose) 8} White petrolatum 3} As described above, solid correction tools were obtained in Examples 2 and 3 in the same manner as in Example 1.

In the comparative examples, the superabsorbent polymer substance and the water-thinning gelling polymer substance were removed from the above examples, and all the others were the same as in Examples 1 to 3. It was set to 3.

(Effects of the Invention) Using the solid correctors obtained in the above Examples 1 to 3 and Comparative Examples 1 to 3, they were applied to a paper surface, and a sign pen (S520) using a water-based ink on a coating film formed thereby was used. , Pentel Co., Ltd.). In Comparative Examples 1 to 3, the handwriting was repelled and a clear handwriting was not obtained, and the ink adhered to the hand when rubbed by hand. However, in Examples 1 to 3, clear handwriting was obtained without repelling the handwriting, and the ink did not adhere to the hand even if the handwriting was rubbed with the hand.

As described above, the solid correction tool according to the present invention makes it possible to obtain clear handwriting without repelling the ink when rewriting with the aqueous ink after forming the coating for correction. , It has excellent effects.

Claims (1)

(57) [Claims] 1. A solid corrector comprising at least a wax, a white pigment, a superabsorbent polymer substance and / or a thickened gelling polymer substance of water.