JPS642153B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a water-soluble solid drawing material that can be erased with a damp cloth after drawing on a non-absorbing surface such as glass or plastic. This invention relates to a water-soluble solid drawing material with improved surface stickiness.

Conventionally, there are solid drawing materials of this type that use wax and surfactants, and ones that use water-soluble resin, but the former uses a large amount of surfactant, so the drawing surface becomes There has always been a problem of stickiness, and the latter has the problem of being difficult to draw because it simply contains a water-soluble resin.

The present inventors have finally completed the present invention as a result of intensive research into the above-mentioned problems, namely:
The present invention is characterized in that an aqueous component consisting of at least a water-soluble resin solution, an oily component consisting of at least a wax that is solid at room temperature, and a coloring material are emulsionized using an emulsifier that is solid at room temperature and solidified. This paper focuses on solid drawing materials.

A particularly important point of the present invention is that the water-soluble resin solution is used as an aqueous component and the wax is used as an oil-based component to form an emulsion.The water-soluble resin forms a film on the drawing surface, and the drawing surface remains sticky forever. Furthermore, since the water-soluble resin is emulsionized as a solution, it is assumed that the water-soluble resin solution, which is the aqueous component, acts as a lubricant, making it easier to draw.

Each composition will be explained in detail below.

A water-soluble resin solution is used as an aqueous component of an emulsion, and specific examples include:
It is made by dissolving polyvinyl alcohol, carboxymethylcellulose, methylcellulose, polyvinylpyrrolidone, soluble starch, glue, gum arabic, etc. in water, and can be used alone or in combination, and the amount used is determined by the resin concentration in the aqueous component. If the resin concentration is low, the fixing performance will be poor;
The higher the density, the worse the drawing quality becomes.3-15
Weight percent is preferred.

Waxes that are solid at room temperature are used as oil-based ingredients in emulsions, and specific examples include paraffin wax, microcrystalline wax, ketone wax, wood wax, beeswax, rice wax, and candelilla wax. Furthermore, wax analogues such as higher fatty acids such as palmitic acid, stearic acid, behenic acid, and myristic acid, and higher alcohols such as cetyl alcohol, stearyl alcohol, cholesterin, and lanolin alcohol are also included, and these may be used alone or in combination. The usage amount is W/
Although it differs depending on the O type and O/W type, it is preferably 20 to 70% by weight based on the total amount of the solid drawing material.

Colorants include well-known inorganic pigments, organic pigments,
Known dyes are appropriately selected and used depending on the purpose, for example, a high proportion of pigment is used to obtain concealing properties, and a small proportion of dye is used to obtain transparency.

Emulsifiers that are solid at room temperature are used to emulsify aqueous and oily components.
Emulsifiers used for W type include polyoxyethylene alkyl ether, polyoxyethylene alkyl phenol ether, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene fatty acid ester, glycerin fatty acid ester, etc. with an HLB of about 8 to 16. These nonionic surfactants can be used alone or in combination. Examples of emulsifiers used for W/O type include sorbitan monopalmitate, sorbitan monostearate, sorbitan distearate, and sorbitan tristear. Sorbitan fatty acid esters such as sorbitan fatty acid esters, glycerin fatty acid esters such as stearic acid monoglyceride, polyoxyethylene alkyl ethers, polyoxyethylene phenol ethers, polyoxyethylene fatty acid esters, and glycerin fatty acid esters with an HLB of about 3 to 8. When using beeswax as a nonionic surfactant or wax, borax can also be used, and these can be used alone or in combination. Emulsifiers that are liquid at room temperature inhibit drying of the drawing surface and are therefore not suitable for use in the present invention.

The amount of emulsifier used depends on the type of emulsion,
It can be determined as appropriate in consideration of oily components, aqueous components, etc., but it is preferably 3 to 40% by weight based on the total amount of the solid drawing material.

In addition, humectants such as glycerin, ethylene glycol, and urea, and fillers such as charcoal, talc, Atagel, mica, and alumina can also be used as adjuvants.

Next, I will briefly describe an example of the manufacturing method.
Oil-based ingredients such as wax and emulsifier are heated and melted in a hydrophilic container for O/W type, or in a lipophilic container for W/O type, and warm water heated to the same temperature is gradually added while stirring to emulsify and further dissolve in water. Gradually add the aqueous component of the resin solution, and once the emulsification has stabilized,
A solid drawing material is obtained by cooling and solidifying.

In the case of pigments and oil-soluble dyes, the colorant may be added to the oil component at the same time, and in the case of water-soluble dyes and dispersed pigments, it may be added to hot water or after addition of hot water.

The timing of addition of the adjuvant is not limited as long as it does not interfere with the production of the emulsion.

Hereinafter, the present invention will be explained in more detail according to Examples.

Example 1 Wood wax 30 parts by weight Paraffin wax 130〓 20〃 Sorbitan monostearate (HLB=4.7
(Span 60, manufactured by Kao Atlas Co., Ltd.) 10 〃 Novoperm Red HF2B (organic pigment, manufactured by Hoechst) 5 〃 Melt the above composition at 80°C in a polypropylene container, and add 15 parts by weight of warm water at 80°C while stirring. Add gradually.

Furthermore, 20 parts by weight of a 10% polyvinyl alcohol solution (PVANH-18, manufactured by Nippon Gosei Kagaku Kogyo Co., Ltd.) was heated to 80°C and then gradually added in the same manner as W/O.
An emulsion solution of the mold was obtained.

This was poured into a lipstick-shaped container and cooled and solidified to obtain a solid drawing material.

When I drew on glass using the above solid drawing material, I was able to draw with a soft touch, and it dried in 15 minutes without any stickiness.

Afterwards, it could be erased by simply wiping it lightly with a damp cloth.

Example 2 Beeswax 40 parts by weight Polyoxyethylene nonylphenol ether (HLB=7.8 Emulgen 903, manufactured by Kao Atlas Co., Ltd.) 15 〃 Calcium carbonate 15 〃 PV Fast Blue B2G (organic pigment, manufactured by Hoechst) 5 〃 The above formulation is melted at 80°C in a polypropylene container, and 15 parts by weight of warm water at 80°C is gradually added while stirring.

Furthermore, 35 parts by weight of a 5% carboxymethyl cellulose solution was heated to 80° C. and then gradually added in the same manner to obtain a W/O type emulsion solution.

This was poured into a lipstick container and cooled and solidified to obtain a solid drawing material.

When I drew on a whiteboard using the solid drawing material mentioned above, I was able to draw with a soft touch, and it dried in 15 minutes without any stickiness. Afterwards, it could be erased by simply wiping it lightly with a damp cloth.

Example 3 Wood wax 20 parts by weight Paraffin wax 130〓 15 〃 Aratsucel (HLB=11 self-emulsifying glycerol monostearate, manufactured by Kao Atlas Co., Ltd.)
15 〃 Melt the above formulation at 80℃ in a glass container,
Gradually add 20 parts by weight of 80℃ warm water while stirring.
Furthermore, add 20 parts by weight of a 15% polyvinyl alcohol aqueous solution.
After heating to 80°C, the mixture was gradually added to obtain an O/W emulsion solution.

Furthermore, Ryudye-W Yellow FF is used as a coloring agent.
&G (solid content 25% dispersed pigment, Dainippon Ink Chemical Co., Ltd.)
In the same manner, 10 parts by weight of (manufactured by) Co., Ltd.) was added, poured into a lipstick-shaped container, and cooled and solidified to obtain a solid drawing material.

When I drew on glass using the above-mentioned solid drawing material, I was able to draw with a soft touch, and it dried in about 10 minutes and was no longer sticky. Afterwards, it could be erased by simply wiping it lightly with a damp cloth.

As explained above, the solid drawing material of the present invention can be erased with a damp cloth after drawing on a non-absorbing surface, and can also be used in the same way as ordinary crayons, passes, etc., and can also be used to draw on drawing paper. Afterwards, it is also possible to create a watercolor-like picture using a brush moistened with water.

Claims (1)

[Claims] 1. A water-soluble solid drawing characterized in that an aqueous component consisting of at least a water-soluble resin solution, an oily component consisting of at least a wax that is solid at room temperature, and a coloring material are emulsionized using an emulsifier that is solid at room temperature and solidified. Material.