This section provides an overview for acrylic resin paints as well as their applications and principles. Also, please take a look at the list of 10 acrylic resin paint manufacturers and their company rankings.
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Acrylic resin paint is a term for paints made primarily of acrylic resin, originating around 1950. Acrylic resin is co-polymerized from acrylic acid, methacrylic acid, their esters, styrene, and other monomers, and is used in a wide range of applications such as adhesives and organic glass, in addition to paints, due to its high degree of freedom in molecular design.
When acrylic resin paint was first marketed, it quickly became popular due to its excellent color and gloss, but today, urethane and acrylic silicone resin paints with higher performance are the mainstream. Due to volatile organic compound (VOC) issues, solvent-based paints are being replaced by water-based paints.
The main applications of acrylic resin paints include exterior wall painting and DIY. Although the use of acrylic resin paints has been decreasing due to the spread of urethane resin paints, acrylic resin paints are still widely used for the top coat of concrete, mortar, roof tiles, PC concrete, and other surfaces on building exteriors and interiors.
Acrylic resin paints are also often used for furniture and DIY projects because of the wide variety of colors available. Acrylic resins have a wide range of uses because their physical properties can be changed according to application, from flexible to hard coating films, by adjusting the type of monomer and degree of polymerization.
There are two types of acrylic resin paints: oil-based solvent-based acrylic paints and water-based acrylic emulsion paints.
Solvent-type acrylic paints are paints in which acrylic resin is dissolved in thinner, a solvent. Since paint film formation occurs at the molecular level, they have excellent weather, water, alkali, and oil resistance. The biggest disadvantages of solvent-based acrylic paints are the smell of thinner and toxic substances.
Since the main purpose of use is construction, consideration must be given to the surroundings. In addition, protective measures are required not only for the surroundings but also for the workers who handle the paint.
Acrylic emulsion paints, also called waterborne acrylic resin paints, are paints made by emulsifying and dispersing acrylic resin in water. As with solvent-based acrylic paints, it is possible to design functions. Recently, paints with improved functionality have been developed by including additives such as antiseptic, antifoaming, antifungal, and antifouling agents.
Since acrylic emulsion paints do not use solvents, they are virtually free of odors and damage caused by toxic substances. The ever-increasing functionality provided by additives has led to more and more paints being adopted for the same architectural use.
The advantages of acrylic resin paints include low cost, good color and gloss, a wide variety of colors, easy handling by amateurs, and ease of layering. On the other hand, one disadvantage is that they are susceptible to ultraviolet rays and deteriorate quickly. The biggest reason for the sharp decline in demand is due to its weak resistance to UV rays and other weathering factors.
In addition, plasticizers are blended to make the coating film flexible, but the plasticizers are gradually reduced by heat and ultraviolet rays, causing the coating film to harden and crack. The service life of acrylic resin paints is short, ranging from 5 to 8 years, and acrylic silicone resin paint, which has a longer service life, has become the mainstream.
Acrylic silicone resin is an acrylic resin with a silicone skeleton introduced into the molecule. This reduces the disadvantages of acrylic resins. For this reason, acrylic silicone resin paints are often used in paints for residential exteriors.
In general, paints are manufactured through a five-step process. Acrylic emulsion paints require more dispersants and other additives than solvent-based acrylic paints because more particles are dispersed in acrylic emulsion paints. In addition, reactive cross-linking agents are sometimes added as raw materials to increase coating film strength.
Acrylic resin baking coating is a coating method in which acrylic resin paints are applied to an object and then the object is heated to thermoset the acrylic resin, dramatically increasing the strength of the coating film. In the case of acrylic resin, heating and drying at a high temperature of 140°C to 180°C for 20 to 30 minutes is required. Baking coating increases hardness, scratch resistance, and adhesion of the coating film.
Since baked coating increases weather resistance, it decreases degradation, fading, and chalking caused by ultraviolet rays, which have been weak points of acrylic resins. However, the disadvantage of this tough coating is that it has a weakness in flexibility and cracking. Therefore, baked-on acrylic resin coating is suitable for outdoor products.
Other applications include indoor and outdoor furniture and wall coatings, as well as the painting of small parts due to its special characteristics. The most familiar examples are vending machines that require weather resistance and accessories that require colored paints.
Baking coating can enhance the functionality of acrylic resin beyond its original performance, but it requires high temperature and long baking time, so there are restrictions on the heat resistance temperature of the object to be coated and its size.
*Including some distributors, etc.
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Mitsubishi Chemical Corporation was founded in 1933 and has a head office in Tokyo, Japan. Mitsubishi Chemical Corporation provides products including chemicals, industrial gases, and health care products to customers globally. Mitsubishi Chemical Group’s performance products division manufactures and distributes. functional food materials, electronic and electrical components, specialty chemicals, and other products. Mitsubishi Chemical health care products include pharmaceuticals, drug discovery solutions, diagnostic reagents, and instruments for medical use. Mitsubishi Chemical Corporation also provides other services such as engineering, information systems, logistics, and consulting.
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