KR20110079932A - Erasuring solid maker - Google Patents

Abstract

PURPOSE: A removable solid marker is provided to ensure an excellent coating property when applied to the unabsorbed surface of a white board, glass, plastic plate, steel plate, and board and to enable clean removal using papers or fabrics. CONSTITUTION: A removable solid marker comprises 20~40% of wax, 5~40% of non-ionic surfactant, 5~50% of synthetic resin and 5~30% of pigment. The wax is two kinds having the melting point difference of 20~30°C selected from petroleum wax, vegetable wax and synthetic wax. The non-ionic surfactant is a liquid phase at room temperature and has HLB value of 8~13. The non-ionic surfactant is polyoxy ethylene alkyleter, polyoxyethylene alkylester or mixture thereof.

Description

Erasing Solid Maker {Erasuring Solid Maker}

The present invention relates to an erasable solid marker, and more particularly, to a non-absorbing surface such as a white board or a green board, the coating composition is excellent in the feeling of application, can be easily erased, and is configured to prevent dust generation. It relates to a giant solid marker.

In general, in the case of frequent or occasional repetition of writing and erasing at school, academy, home, office, etc., chalk or marker is useful, and solid chalk is still used most frequently at school or academy.

However, since the solid chalk generates dust when writing, erasing, cleaning, etc., the solid chalk adversely affects the health of the human body and exposes many problems such as polluting the surrounding environment.

Therefore, in order to solve the above problems, conventional water chalk (or 'liquid liquid') has been developed and used. However, since a separate board must be provided, the cost is high and the structure is complicated because knock operation is required. After drying, there are still problems such as generating a small amount of dust.

In addition to the water chalk, there are marker pens used for non-absorbing surfaces such as white boards. However, if a predetermined time elapses after writing, such as writing, it is difficult to erase, marks are easily generated, and some dust is generated. .

The present invention is to solve the problems of the conventional scavenging applicator as described above, using a wax, a nonionic surfactant, a synthetic resin, a pigment, the wax using a difference in melting point of 20 ~ 30 ℃ , The nonionic surfactant is a liquid at room temperature and uses a HLB value of 8 ~ 13, synthetic resin uses a polyvinyl chloride resin powder and / or benzoguanamine resin powder, so there is no fear of dust generation, and An object of the present invention is to provide an erasable solid marker having excellent erasability.

The erasable solid marker proposed by the present invention comprises a wax, a nonionic surfactant, a synthetic resin, and a pigment.

The wax is used as an excipient, and two waxes having a melting point of about 20 to 30 ° C. are used.

The wax is used in the range of about 20 to 40%.

The wax may be selected from petroleum wax, vegetable wax, and synthetic wax.

In using the wax, if it is required to have a high melting point temperature, it is preferable to use a synthetic wax, Fisher-Tropsch wax, and if a low melting point temperature is required, petroleum wax paraffin wax, microcrystallin It is preferable to use a wax or the like.

In the above, when the temperature difference is less than about 20 ° C or less, the scavenging property is worse, and when the temperature difference is more than about 30 ° C or less, the coating feeling is not good. To break.

The nonionic surfactant is used to impart scavenging properties, and the liquid is used at room temperature, and the HLB (Hydrophilic Lipophilic Balance) value is in the range of about 8 to about 13.

In the above, the nonionic surfactant is not preferable because the use of a solid at room temperature is bad scavenging.

In addition, when the HLB value is less than 8, the scavenging property is good, but it is difficult to apply to the non-absorbing surface, and when it is more than 13, the dispersibility with the wax worsens, so the separation phenomenon occurs.

As said nonionic surfactant, polyoxy ethylene alkyl ether and polyoxy ethylene alkyl ester are used individually or in mixture in about 5 to 40% of range.

In the above, preferably, about 10 to 30% of the nonionic surfactant is used.

As the synthetic resin, polyvinyl chloride resin powder and benzoguanamine resin powder may be used alone or in a mixture of about 5 to 50%.

The particle size of the polyvinyl chloride resin powder and benzoguanamine resin powder is about 0.1 ~ 10㎛ used.

The pigment is used in the range of about 5-30%.

As the pigment, organic pigments, inorganic pigments, fluorescent pigments and the like can be used.

According to the erasable solid marker according to the present invention, since the coating feeling is excellent when applied to non-absorbing surfaces such as whiteboard, glass, plastic, iron, and wooden boards, writing, painting, and the like are easy.

According to the erasable solid marker according to the present invention, since it is easily and cleanly erased by using paper or cloth and no marks remain, it is convenient to use and the life of the writing surface is extended.

In addition, according to the erasable solid marker according to the present invention, since there is little dust generation during application or erasing, it is harmless to the human body and is easy and easy to maintain such as cleaning.

Next, a preferred embodiment of the erasable solid marker according to the present invention will be described.

Example 1

 Fisher-Tropsch Wax (melting point 100 ° C) 25% and micro crystalline wax (melting point 78 ° C) 25%, polyvinyl chloride resin powder with particle size of 0.8 μm 20%, pigment yellow 2GS (trade name; Uksung Chemical Co., Ltd.) Product) 10%, 20% polyoxyethylene alkyl ester (HLB 11) as a nonionic surfactant was injected into a mold after heating and stirring to 100 ℃ in Hensyl to obtain Example 1 of the yellow scavenging solid marker.

[Example 2]

 Fisher-Tropsch Wax (melting point 85 ° C) 25% and paraffin wax (melting point 60 ° C) 25%, benzoguanamine resin powder with particle size of 0.3㎛ 20%, Yellow 2GS (trade name; product of Uksung Chemical Co., Ltd.) 10% and 20% of a polyoxyethylene alkyl ester (HLB 11), which is a nonionic surfactant, was heated and stirred at 100 ° C in Hensyl, and then injected into a mold to obtain Example 2 of a yellow scavenging solid marker.

Comparative Example 1

Fisher-Tropsch Wax (melting point 85 ° C) 25% and micro crystalline wax (melting point 78 ° C) 25%, constituent kaolin clay 20%, pigment yellow 2GS (trade name; manufactured by Uksung Chemical Co., Ltd.) 10%, nonionic 20% of a polyoxyethylene alkyl ester (HLB 11) which is a surfactant was injected into a mold after heating and stirring at 100 ° C. in Hensyl to obtain Comparative Example 1 of a yellow scavenging solid drawing material.

Comparative Example 2

Fisher-Tropsch Wax (melting point 100 ° C) 25% and micro crystalline wax (melting point 78 ° C) 25%, constituent kaolin clay 20%, pigment yellow 2GS (trade name; manufactured by Uksung Chemical Co., Ltd.) 10%, nonionic 20% of polyoxyethylene alkyl ether (HLB 15), which is a surfactant, was heated and stirred at 100 ° C in Hensyl, and then injected into a mold to obtain a comparative example 2 of a yellow scavenging solid drawing material.

Comparative Example 3

Fisher-Tropsch Wax (melting point 100 ° C) 25%, micro crystalline wax (melting point 78 ° C) 25%, constituent kaolin clay 20%, pigment yellow 2GS (trade name; manufactured by Uksung Chemical Co., Ltd.) 10%, nonionic 20% of polyoxyethylene alkyl ether (HLB 6), which is a surfactant, was heated and stirred at 100 ° C in Hensyl, and then injected into a mold to obtain a comparative example 3 of a yellow scavenging solid drawing material.

The coating feeling and the erasing property were examined with Example 1 and Example 2 and Comparative Examples 1 to 3 obtained as described above.

In the above, the coating feeling test was determined by the method of applying 10 panels to the white board, and the erasing test was visually determined as the number of times of erasing by rubbing at a pressure of approximately 1 kg / cm 2 using a cloth. Is shown in Table 1 below.

division Application Scavenging Example 1 ◎ ◎ Example 2 ◎ ◎ Comparative Example 1 ◎ △ Comparative Example 2 ― ― Comparative Example 3 △ ◎

In the above, the feeling of applicability and scavenging were evaluated as "good" with very good, "good" with good, "△" with bad, and bad with "-".

As can be seen from Table 1, in Examples 1 and 2, it was confirmed that the coating feeling and the elimination property were very good.

And in the case of Comparative Example 1, when the melting point temperature difference of the wax is too small, the feeling of coating is very good, but it was confirmed that the scavenging properties are not good.

In addition, in Comparative Example 2, when the HLB of the nonionic surfactant was too high, it was confirmed that the coating feeling and the scavenging property were poor.

Furthermore, in the case of Comparative Example 3, when the HLB of the nonionic surfactant is too low, the scavenging property is very good, but the coating feeling was not good.

In the above, a preferred embodiment of the erasable solid marker according to the present invention has been described. However, the present invention is not limited thereto, and various modifications can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings. It is possible and this also falls within the scope of the present invention.

Claims (6)

An erasable solid marker comprising 20% to 40% wax, 5% to 40% nonionic surfactant, 5% to 50% synthetic resin, and 5% to 30% pigment. The method according to claim 1,
The wax is an erasable solid marker used by selecting two kinds of petroleum wax, vegetable wax, and synthetic wax having a difference in melting point from 20 to 30 ° C. The method according to claim 1,
Said nonionic surfactant is a liquid at room temperature and has an HLB value of 8-13. The method according to claim 3,
An erasable solid marker used as the nonionic surfactant alone or in combination with polyoxyethylene alkyl ether and polyoxyethylene alkyl ester. The method according to claim 1,
The synthetic resin is an erasable solid marker using a single or a mixture of polyvinyl chloride resin powder, benzoguanamine resin powder having a particle size of 0.1 ~ 10㎛. The method according to claim 1,
The pigment is an erasable solid marker using one or more of organic pigments, inorganic pigments, fluorescent pigments alone or in combination.