KR20150018477A - Eco-friendly Acrylic Art Materials and Method of Producing the same - Google Patents

Abstract

The present invention relates to an environmentally-friendly acrylic art material comprising: 60-65 wt% of an acrylic resin consisting of methyl methacrylate (MMA) and having a solid content of 51-52 wt%; 1-2 wt% of propyleneglycol; 0.3-0.5 wt% of an antifoamer; 0.2-0.5 wt% of a preservative; 30-34 wt% of a pigment including a filler; 0.3-0.5 wt% of a viscosity agent; and the remaining amount being water. The environmentally-friendly acrylic art material has reinforced functions such as light fastness, water resistance, and durability and excellent non-toxicity and environmentally-friendly properties.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an eco-friendly acrylic art material,

The present invention relates to an eco-friendly art material, and more particularly, to an eco-friendly acrylic art material having enhanced light resistance, water resistance and non-toxicity, and a manufacturing method thereof.

Acrylic art materials can be applied not only on the surface but also on the surface of various objects, and it is widely regarded as a product that will lead the next generation art materials market.

Acrylic art materials are stronger than vinyl paints, so they can be colored on all kinds of base materials. They are also used for wall paintings and crafts because they are drying fast.

Acrylic art materials are waterproof, safer than conventional paints such as poster colors, and are more vivid, so they are widely used for design recently because they have good effects in areas such as pop art, illustration, and stylization.

The use of such acrylic art materials has been gradually expanded, and research and development for use in various fields of crafts, woodworking, interior and exterior, interior, architecture, household goods, and the like are underway.

However, currently available acrylic art materials are poor in durability and preservation ability to be used in such various fields, and have a high content of volatile organic compounds (VOC), which is not suitable for non-toxic and eco-friendly properties.

As a result, the functions of light resistance, water resistance and durability that can be used in various fields of crafts, woodworking, indoor and outdoor interior, architecture and daily life are enhanced, and non-toxic and environmentally friendly acrylic art materials Development is needed.

Accordingly, an object of the present invention is to provide an eco-friendly acrylic art material having enhanced functions such as light resistance, water resistance and durability and being non-toxic and eco-friendly, which is harmless to the human body, and a manufacturing method thereof.

In order to solve the above-mentioned problems, the present invention provides a resin composition comprising 60 to 65% by weight of an acrylic resin composed of methyl methacrylate (MMA) and having a solid content of 51 to 52% by weight; 1 to 2% by weight of propylene glycol; 0.3 to 0.5 wt% antifoaming agent; 0.2 to 0.5% by weight of an antiseptic; 30 to 34% by weight of pigment containing filler; 0.3 to 0.5 wt% of a thickener; And the remainder being water.

In the present invention, it is preferable that the preservative contains 2.5 wt% of BIT (1,2-benzisothiazolin-3-one) and MIT (2-methyl-4-isothiazolin-3-one) in relation to the total preservative content.

The present invention also relates to an acrylic resin composition comprising 60 to 65% by weight of an acrylic resin composed of methyl methacrylate (MMA) and having a solid content of 51 to 52% by weight; 1 to 2% by weight of propylene glycol; 0.3 to 0.5 wt% antifoaming agent; 0.2 to 0.5% by weight of an antiseptic; 30 to 34% by weight of pigment containing filler; And water of the remainder is mixed and stirred, and 0.3 to 0.5 wt% of a thickener is slowly added to the mixture to prepare an eco-friendly acrylic art material.

According to the eco-friendly acrylic art material of the present invention and its manufacturing method, it is possible to provide an eco-friendly acrylic art material which is improved in functions such as light resistance, water resistance and durability, and is harmless to the human body and excellent in non-toxicity and environment friendliness.

Accordingly, it is possible to provide a multi-functional acrylic art material that can be used in various fields such as various crafts, woodworking, interior and exterior interiors, architecture, daily necessities, and the like.

The present inventors have completed the present invention while studying a method for eliminating or minimizing the toxic components possessed by existing acrylic art materials in order to provide an acrylic art material having excellent properties inherent to acrylic art materials such as durability with environmental friendliness Respectively.

Hereinafter, the present invention will be described in detail with reference to examples. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted so as to avoid obscuring the subject matter of the present invention.

The eco-friendly acrylic art material according to an embodiment of the present invention includes 60 to 65% by weight of an acrylic resin having 51 to 52% by weight of solid content, 0.3 to 0.5% by weight of a defoamer, 0.3 to 0.5% by weight of a preservative, 1 to 2% by weight of propylene glycol, 15 to 17% by weight of a pigment, 15 to 17% by weight of alumina silicate, 0.3 to 0.5% by weight of a thickener and the balance water.

The acrylic resin is obtained by polymerizing 100% methyl methacrylate (MMA) monomer. As a result, it is not necessary to add a film-forming agent (film formation by lowering the glass transition temperature) such as Texanol (CAS No. 25265-77-4), which is usually added at the time of producing an acrylic art material, The content of the organic compound (VOC, Volatile Organic Compounds) can be drastically reduced, and the content of the volatile organic compound contained in the final art material can be minimized. Texanol (2,2,4-Trimethyl-1,3-pentanediol monoisobutyrate) is classified as a volatile organic compound, and it is environment-friendly because it can form an acrylic resin having excellent film formation even if it is not added.

The antifoaming agent is used for suppressing bubble generation, and those conventionally used in this technical field can be used.

Preservatives are used to prevent decay of art materials. Preservatives commonly used in this field contain 10% by weight of 1,2-benzisothiazolin-3-one (BIT), which is a substantial preservative ingredient. It has been reported that skin irritation can be caused. Therefore, in the present invention, commercially available MIT (2-methyl-4-isothiazolin-3-one) is mixed to lower the content of 1,2-benzisothiazolin-3-one contained in the preservative. And the content of each preservative is about 2.5% by weight with respect to the total content of the preservative. As will be described later, as a result of the preservation performance test, it is confirmed that the same anticorrosive performance as the conventional anticorrosive coating composition is obtained. Accordingly, the component of 1,2-benzisothiazolin-3-one which can give skin irritation can be minimized, so that skin irritation can be reduced to about 1/4.

Propylene Glycol is used as stabilizer and cryoprotectant.

Pigments are added to give color, and to ensure non-toxicity and environmental friendliness, pigments containing heavy metals are excluded. As a specific example, in the case of white, titanium dioxide can be preferably used.

As the filler, alumina silicate can be preferably used.

The thickener is used as an acrylic art material in order to ensure an appropriate viscosity, and a material conventionally used in this technical field can be used.

The eco-friendly acrylic art material according to an embodiment of the present invention includes 60 to 65% by weight of an acrylic resin having 51 to 52% by weight of solid content, 0.3 to 0.5% by weight of a defoamer, By mixing 0.3 to 0.5% by weight of a preservative, 1 to 2% by weight of propylene glycol, 15 to 17% by weight of a pigment, 15 to 17% by weight of alumina silicate and the remainder of water with stirring and 0.3 to 0.5% by weight of a thickener .

The eco-friendly acrylic art material according to the present invention is characterized in that it has non-toxic and eco-friendliness, and has enhanced light resistance, water resistance and durability.

Example

≪ Light resistance test &

In order to optimize the physical properties of the environmentally friendly acrylic art materials according to the present invention, experiments were conducted to adjust the content ratio of each component, especially acrylic resin, pigment and filler, and to test the light resistance. The light resistance was tested according to ISO 105 B: 02 (200 h, about 50 years light source) and the result was expressed as the discoloration value ΔE Lab. The smaller the discoloration value, the higher the light resistance.

The experimental results are shown in the table below.

Acrylic resin (% by weight) Pigment and filler (% by weight) ΔE Lab 41 39 14.47 45 39 12.33 50 39 5.34 55 35 1.08 60 30 0.61 60 32 1.22 65 25 2.44

In general, the light resistance is proportional to the quality and content of the pigment. However, in the case of using the acrylic resin according to the present invention, it can be understood that the light resistance is not only proportional to the content of the pigment. In this embodiment, since a coating film forming agent is not added to the acrylic resin, a coating film having stable durability can be formed only when the content of the acrylic resin is larger than that of the conventional acrylic resin.

Table 1 shows the results of measuring the degree of discoloration by the colorimeter while changing the contents of the acrylic resin, the pigment and the filler. It can be seen from Table 1 that when the content of the acrylic resin is 60% by weight and the content of the pigment and the filler is 30 to 32% by weight, the light resistance is excellent.

<Water resistance test>

The acrylic resin according to the present invention has a slight freezing prevention function. However, acrylic art materials, which have been produced after mixing, are denatured by adding various liquid additives and pigments, and even if they are liquefied after being frozen, their adhesion is very low and the film formation is not complete. Therefore, in the present invention, propylene glycol is used as the cryoprotectant.

Propylene glycol is a material having various functions such as a cryoprotectant, a wetting agent, a plasticizer, a stabilizer, and a solvent. However, when it is used in an excessive amount, the wetting agent function greatly affects the water resistance. Also, when the amount is too small, the surface is dried while the consumer draws a large picture, and the film is pushed out, so that the work is not smoothly performed. Therefore, the water resistance test of the acrylic art materials according to the present invention was carried out by varying the propylene glycol content.

The water resistance test was divided into two. First, the adhesion test was carried out on the acrylic plate and the adhesion test after the freezing. The second test was conducted by the adhesion test on the glass plate according to the blending ratio of propylene glycol.

Each experiment was conducted by applying a test sample to a thickness of 120 μm and drying for 24 hours. After 24 hours of storage in water, the moisture content and film forming conditions were visually observed according to the changed weight. The freezing temperature was 24 hours After storage, it was visually observed whether it was usable or not.

The results of the first experiment are shown in Table 2 below.

Propylene glycol (% by weight) Underwater storage Freezing temperature (℃) 3.5 Adhesion deterioration, exfoliation -5 3 Adhesion deterioration, exfoliation -4 2.5 intumescence -4 2 0.17 g absorption -3 1.5 0.11 g absorption -3 One 0.04 g absorption -3

According to Table 2, it can be seen that the water resistance of the acrylic plate in the sample containing propylene glycol at 2% by weight or more is very poor. When the propylene glycol is contained at 2% by weight or less, Respectively.

In the second experiment, the content of propylene glycol in the glass plate was 2 wt% or less, and the water resistance was tested. The results are shown in Table 3 below.

Propylene glycol (% by weight) Attached glass plate 1.5 Removing the frame border 1.4 Small amount of coating edge 1.3 Small amount of coating edge 1.2 0.04 1.1 0.02 1.0 0.02

According to Table 3, when the content of propylene glycol was 1.1% by weight and 1% by weight, the adhesive force of glass and the water resistance were better than those of the case where the contents were different.

&Lt; Examples and Comparative Examples 1-2 >

The eco-friendly acrylic art materials in which the pigment according to the present invention is made in white are prepared according to the following Table 4, and the physical properties of the art materials according to Comparative Example 1 and Comparative Example 2 corresponding to the conventional white, Respectively. In the examples, MMA monomer-based acrylic resin (AC-2235, Rohm & Hass) according to the present invention was used. In Comparative Example 1, a conventional VAM (vinyl acetate monomer) based resin was used. In Comparative Example 2, Monomer-based acrylic resin or somewhat lower quality resin (Rohm & Hass, AC-261) was used. On the other hand, the materials of Examples and Comparative Examples 2 are prepared in powder form and further contain a dispersant, and may be further contained in an amount of 1 to 2% by weight based on the total weight of the art material.

ingredient Comparative Example 1
(weight%) Comparative Example 2
(weight%) Example
(weight%) Suzy 72.1 50.0 60.4 Texan - 1.0 - Propylene glycol 2.1 2.4 1.1 Defoamer 0.4 0.4 0.4 antiseptic 0.4 0.4 MIT-containing
0.2 Pigment 14.4 30.0 30.5 Filler Calcium carbonate pigment
5.2
Alumina silicate pigment
5.1 Alumina silicate pigment 2.9 Alumina silicate pigment
1.8 Thickener 0.3 1.0 0.5 water - 9.0 5.5 Dispersant - 2.9 1.5

As a result of the light resistance and water resistance test, Comparative Example 1 <Comparative Example 2 <Examples were shown in the order, and the adhesion force was lowest in Comparative Example 1. Comparative Example 2 contained texanol, indicating that a small amount of VOC was contained. The examples showed comparable level of preservative performance even when a small amount of preservative was used in combination with the MIT component in comparison with Comparative Example 1 or 2, and skin irritation was hardly observed.

<Conservation Performance and Skin Irritation Test>

The preservative performance and skin irritation tests were performed on the materials produced according to the examples.

The preservation performance test was carried out by the Thor research institute in England through the wet-state bacterial cultivation experiment, and it was found that the preservative (BIT-based preservative) used in the past and the hypo-stimulative preservative And a preservative according to the invention). As a result, even when the preservative according to the present invention contained 0.2 wt% of the total sample, the preservative performance was equivalent to that of the conventional preservative containing 0.7 wt% of the preservative.

The skin irritation test was conducted on three female rabbits (New Zealand white) according to Notification No. 2007-79 of the National Institute of Environmental Research, Two pieces of each of the left and right sides of the vertebrae were set at about 2.5 cm x 2.5 cm in the worship portion of each animal, the pigment prepared according to the example was applied to the left, and sterilized physiological saline was applied to the right as a control group to obtain the results . As a result of the test, no harmful situation occurred.

As described above, according to the eco-friendly acrylic art material of the present invention, since the coating film is formed very strongly, the durability of the color is maintained for about 45 years. Therefore, as the period required to be reworked is greatly increased from the previous five to six years, it is possible to reduce the social cost through the economic effect and the preservation power of the cost reduction.

Also, because of its excellent water resistance, it can be widely used without being indoors and outdoors, and it has an effect of improving non-toxicity and environment friendliness.

It will be apparent to those skilled in the art that various modifications, substitutions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. will be. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are intended to illustrate and not limit the technical spirit of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas falling within the scope of the same shall be construed as falling within the scope of the present invention.

Claims (3)

60 to 65% by weight of an acrylic resin composed of methyl methacrylate (MMA) and having a solid content of 51 to 52% by weight;
1 to 2% by weight of propylene glycol;
0.3 to 0.5 wt% antifoaming agent;
0.2 to 0.5% by weight of an antiseptic;
30 to 34% by weight of pigment containing filler;
0.3 to 0.5 wt% of a thickener; And
Eco-friendly acrylic art material composed of water.
The method according to claim 1,
Wherein the preservative contains 2.5 wt% of BIT (1,2-benzisothiazolin-3-one) and MIT (2-methyl-4-isothiazolin-3-one) .
60 to 65% by weight of an acrylic resin composed of methyl methacrylate (MMA) and having a solid content of 51 to 52% by weight;
1 to 2% by weight of propylene glycol;
0.3 to 0.5 wt% antifoaming agent;
0.2 to 0.5% by weight of an antiseptic;
30 to 34% by weight of pigment containing filler; And
The remaining water was mixed and stirred,
And 0.3 to 0.5% by weight of a thickener is slowly added to the mixture to prepare an eco-friendly acrylic art material.