Decorative film, method for producing same, and decorated molded article
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A manufacturing method and decorative film technology, which can be used in decorations, wood layered products, chemical instruments and methods, etc., can solve problems such as difficult design, and achieve high versatility, excellent wear resistance, and excellent formability. Effect
Active Publication Date: 2018-06-08
TOYO INK SC HOLD CO LTD +1
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However, such an existing decoration method is difficult to carry out high-design decoration.
Method used
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[0220] Hereinafter, the present invention will be described in detail through examples, but the present invention is not limited to the following examples. In addition, in an Example, a part means a mass part, % means a mass % (except the % in elongation).
Synthetic example A-1
[0221] Synthesis Example A-1 "Acrylic Copolymer A-1 Solution"
[0222] 150 parts of methyl isobutyl ketone (MIBK) was charged into a four-necked flask equipped with a cooling tube, a stirring device, a thermometer, and a nitrogen gas introduction tube, and the temperature was raised while stirring under a nitrogen atmosphere. After the temperature in the flask reached 74°C, the temperature was maintained as the synthesis temperature, and 3 parts of methyl methacrylate, 82.54 parts of n-butyl methacrylate, 12.85 parts of acrylate-4- Hydroxybutyl ester, 0.61 part of methacrylic acid, 1 part of Fancryl FA-711MM (manufactured by Hitachi Chemical Co., Ltd., pentamethylpiperidinyl methacrylate), and 0.1 part of azobisisobutyronitrile Mixed monomer solution. 0.02 parts of azobisisobutyronitrile was gradually added every 1 hour after 1 hour after completion|finish of monomer addition, and reaction was continued until the unreacted monomer in a solution became 1% or less. After the u...
Embodiment 101
[0298] Using a doctor blade, the coating material for hard coating (HC-1) was coated on a sheet of a polycarbonate-based substrate (Makrofol, DE1-1 manufactured by Bayer) with a thickness of 300 μm and an A4 size. The surface was dried in an oven at 100° C. for 1 minute to evaporate the solvents. The doctor blade was selected so that the film thickness after drying would be 20 μm.
[0299] Then, it was left to stand in a constant temperature room at 50° C. for 4 days to allow the reaction (aging) of the acrylic copolymer and the polyisocyanate compound to progress, and to form a hard coat layer on the polycarbonate base material to obtain a decorative film.
[0300] The decorative film was evaluated for adhesiveness, solvent resistance, pencil hardness, abrasion resistance, moldability, sunscreen resistance, and weather resistance according to the method described later, and the results are shown in Table 8.
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Abstract
Provided is a decorative film having excellent versatility and molding properties during molding, and excellent design properties, abrasion resistance, and sunscreen cream resistance. The decorative film (101) comprises a layered body including a hard coat layer (10) and a substrate layer (1), the hard coat layer (10) comprising a cured product of a thermosetting coating material including an isocyanate-based curing agent (B) and an acrylic copolymer (A) having a hydroxyl group. The hard coat layer (10) has a predetermined total light transmittance, diffuse transmittance, and tensile strength.The acrylic copolymer (A) has a specific hydroxyl value, acid value, glass transition temperature, Mw, and Mw / Mn, and is a copolymer having monomer-derived units having a hydroxyl group. The contentratio of monomer-derived units having one hydroxyl group among 100 mol% of the monomer-derived units having a hydroxyl group, and the content ratio of primary hydroxyl groups in the acrylic copolymer(A) satisfy a specific range.
Description
technical field [0001] The present invention relates to a decorative film having a hard coat layer formed of a specific acrylic paint on the surface and a method for producing the same. Also, the present invention relates to a decorative molded article whose surface is covered with the decorative film and the hard coat layer is located outside. Background technique [0002] Resin molded products are widely used in portable information terminal devices such as smartphones, notebook personal computers, home appliances, and automotive interior and exterior parts. Regarding these resin molded articles, after molding the plastic resin, in order to improve the design of the resin molded article, the surface of the resin molded article is usually decorated by painting or printing. [0003] Conventionally, coloring paints have been painted or printed on the surface of resin molded articles in order to impart design properties. In addition, in order to protect the surface, the surf...
Claims
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Application Information
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