Photopolymerizable resin composition for molding, and molded multilayer article
A technology of photopolymerizable substances and compositions, applied in synthetic resin layered products, layered products, optics, etc., can solve the problems of poor adhesion of resin layers, and achieve the effect of excellent adhesion
Active Publication Date: 2015-07-08
DIC CORP
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Problems solved by technology
[0004] However, the shaped multilayer product generally has poor adhesion between the transparent resin base material and the resin layer having a fine uneven structure, and it is desired to improve it.
In view of this point, in the field of the hard coat layer without shaping process, various techniques for improving the adhesion between the cured product and the substrate are known. For example, in the following patent document 1, a method for improving The technology of using a photopolymerization initiator with a hydrogen abstraction type chemical structure to improve the adhesion of the substrate film, however, compared with the easy visualization and comparison of the interface interaction of the substrate in the field of coatings, the excipient material has a certain degree of Therefore, the current status quo is difficult to directly transfer to the technology of improving adhesion in the field of coatings
Method used
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Effect test
Embodiment 1～12 and comparative example 1～5
[0156] Active energy ray-curable resin compositions for molding were prepared by blending the components with the formulation compositions shown in Table 1 and Table 2.
[0157] The obtained active energy ray-curable resin composition for molding was filled between a mold having a linear arrangement of concavo-convex shapes of unit prisms (pitch 50 μm, height 25 μm) and various transparent resin substrates listed in Table 1 and Table 2. , and then irradiate 800mJ / cm from the side of the transparent resin substrate using an ultra-high pressure mercury lamp 2 Then, the transparent resin substrate and the active energy ray curable resin layer are peeled off from the mold to produce a shape-imparting cured resin sheet (L) (active energy ray curable resin The thickness of the layer is 20-30 μm).
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Abstract
Provided are: a photocurable resin composition for molding, which can be used for forming a resin layer on a transparent resin base and exhibits an excellent adhesion property onto various types of transparent resin bases; and a molded multilayer article having the above-mentioned adhesion property. The photocurable resin composition is characterized by containing (A) a photopolymerizable substance having a (meth)acryloyl group in the molecular structure thereof, (B) a hydrogen-abstraction-type photopolymerization initiator, (C) an intramolecular-cleavage-type photopolymerization initiator and (D) a silicone compound as essential components, wherein the content of the silicone compound (D) is 1.0 to 5.0 parts by mass relative to the total content, i.e., 100 parts by mass, of the components (A) to (C).
Description
technical field [0001] The present invention relates to a photocurable resin composition for molding, which is suitable for Fresnel lens sheets used in projection screens such as projection televisions, and a multilayer molded product obtained by molding the photocurable resin composition for molding. Or a lenticular lens sheet, a prism sheet or a microlens sheet used as a backlight for a liquid crystal display device or the like, a moth-eye film used as an antireflection film for a thin TV, or the like. Background technique [0002] In recent years, in displays such as liquid crystal display devices, an optical sheet that refracts light in the concave-convex structure by forming fine concave-convex shapes on the surface to exhibit the required functions is indispensable, and high requirements are required. Refractive index, shape retention and other properties. Examples of such optical sheets include Fresnel lens sheets or lenticular lens sheets used for projection screens...
Claims
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IPC IPC(8): C08F2/50B32B27/30C08F2/44G02B1/04
CPCC08F2/48B32B27/308G02B1/041Y10T428/31507Y10T428/31663C08L33/08C08L33/10C08L45/00C08F220/301C08F220/1812C08F222/1065C08L33/14C08L35/02
Inventor 杉山将志小林伸生
Owner DIC CORP