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Photocurable composition and optical part

A technology for optical components and compositions, applied in the directions of optical elements, optics, coatings, etc., can solve the problems of poor heat resistance and reduced crosslinking degree, and achieve the effect of high heat resistance and excellent heat resistance

Active Publication Date: 2007-05-02
JSR CORPORATIOON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since this technology reduces the amount of multifunctional monomers used, the degree of crosslinking of the product is reduced, resulting in poor heat resistance

Method used

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  • Photocurable composition and optical part
  • Photocurable composition and optical part
  • Photocurable composition and optical part

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 and comparative example 1-5

[0065] The components shown in Table 1 were added to the reactor. The mixture was stirred at 50-60°C for 1 hour to obtain a curable liquid resin composition having a viscosity of 500-10000 cp / 25°C. The unit of each component shown in Table 1 is "parts by weight".

[0066] The various components shown in Table 1 are as follows.

[0067] Component (A)

[0068] Tetrabromobisphenol A epoxy acrylate: Neopole V779 (manufactured by Japan U-PiCA Co., Ltd.)

[0069] Phenoxyethyl methacrylate: Light Ester PO (manufactured by Kyoeisha Chemical Co., Ltd.)

[0070] Tribromophenoxyethyl acrylate: New Frontier BR-31 (manufactured by Daiichi Kogyo Seiyaku Co., Ltd.)

[0071] Bisphenol A epoxy acrylate: Ripoxy VR-90 (manufactured by Showa Highpolymer Co., Ltd.)

[0072] Component (B)

[0073] Tris(acryloylethyl)isocyanurate: Aronix M315 (manufactured by Toagosei Co., Ltd.)

[0074] Component (C)

[0075] Vinyl caprolactam: V-CAP (manufactured by ISP Japan, Ltd.) (Tg: 176°C)

[0076] T...

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Abstract

Subject : To provide a photocurable composition capable of producing a cured product excelling in heat resistance, showing only a small amount of deformation, and producing cured products particularly useful as optical parts. Means for the Solution : A photocurable composition comprising the following components (A)-(D): (A) at least one of the (meth)acrylates having the structures shown by the formulas (1) and (2) (excluding the following component (C)), Chemical Formula (1), Chemical Formula (2) wherein R<1> represents a hydrogen atom or a halogen atom excluding a fluorine atom, R<2> is a hydrogen atom, a halogen atom excluding a fluorine atom, Ph-C(CH3)2-, Ph-, or an alkyl group having 1-20 carbon atoms, and R<3> represents -CH2-, -S-, or -C(CH3)2-, (B) a (meth)acrylate having three or more functional groups, (C) .a monofunctional monomer of which the homopolymer has a Tg of 150< DEG >C or more, and (D) a radical photoinitiator, wherein 5-50 wt% of the total acrylic components in the composition is a methacrylate compound and the component (C) is contained in an amount of 4-40 wt%.

Description

technical field [0001] The present invention relates to a photocurable composition. More particularly, the present invention relates to a photocurable composition useful for forming optical components such as lenses, which are prismatic lens sheets for liquid crystal display backlights or for projection TV screens or backlights utilizing such sheets The source is the lens of a Fresnel lens sheet or a lenticular lens sheet. Background technique [0002] Generally, lenses such as Fresnel lenses and biconvex lenses are produced using a press-forming process or a casting process. However, these processes require a long time to fabricate lenses, resulting in low yields. In order to solve this problem, a method of producing a lens using a UV-curable resin has been studied in recent years. In more detail, the method includes casting a UV curable resin composition into a gap between a mold having a lens shape and a transparent resin substrate, and curing the composition by applyi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/00G02B1/00G02B1/04C08F220/18C08F220/20C08F220/22
CPCC08F220/18C09D4/00C08F220/22C09D133/06C09D133/08
Inventor 二见里地小宫全
Owner JSR CORPORATIOON