Resin composition and optical element

A technology of resin composition and oligomer, which is applied in the fields of optical components and photocurable resin compositions, and can solve problems such as not being able to fully satisfy performance

Inactive Publication Date: 2005-08-10
DAI NIPPON PRINTING CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] However, the current situation cannot satisfy all these properties, and the problem to be solved is to provide a more excellent resin composition

Method used

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  • Resin composition and optical element
  • Resin composition and optical element
  • Resin composition and optical element

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0109] In order to impart impact resistance to polymethyl methacrylate resin (PMMA), polycarbonate resin (PC), and styrene resin with moisture absorption properties, rubber-modified styrene-based resins containing rubber-like elastomers as dispersed particles are used (MBS resin) and other three kinds of resin as the base material. Below, the mixing ratio of the resin composition, the viscosity of each resin composition, the adhesion between the substrate and the resin composition, the optical properties (refractive index, haze value and total light transmittance) of the resin composition, and The material properties (compressive elastic modulus, elastic deformation rate, glass transition temperature, equilibrium elastic modulus and dynamic friction coefficient) are shown in Table 1 below. In addition, Table 1 also shows the evaluation results (television unit rupture test, abrasion resistance test) of optical elements using the respective resin compositions. Composition B, c...

Embodiment 1-3 and comparative example 10-12

[0207] To the resin composition of composition B shown in Table 1 above, 0.4% by weight of the release agent shown in Table 4, 0.5% by weight of polyether-modified polydimethylsiloxane (Japan Unika-( Co., Ltd. L-7001) and 0.1% by weight of a fluorine-based leveling agent (Dainippon Ink Chemicals Co., Ltd., Megaac F-470) were used to prepare sheet lenses in the same manner as above. In order to study the compatibility of each release agent with polyether-modified polydimethylsiloxane, the release agent and polyether-modified polydimethylsiloxane were mixed according to the ratio of 1:1. Visually evaluate the state of the mixed solution. When the solution was transparent, it was rated as ◯, and when it was cloudy or separated, it was rated as ×. The fluidity of the mixed solution at -10°C was also studied. This mixed solution was put into a glass bottle and stored at -10°C. Tilt the glass bottle of the mixed solution at -10°C by 90°, and if the solution flows immediately (obv...

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Abstract

There are provided a resin composition, which has optical properties such as a high refractive index, has excellent restorability and scratch resistance, and has good adhesion to a substrate, and, when utilized as an optical member (lens) used, for example, in screens for projection televisions or the like, can satisfy various property requirements, and a cured product of the resin composition. The resin composition comprises: an oligomer component comprising urethane (meth)acrylate, produced by reacting a bisphenol A polyalkoxydiol, an organic diisocyanate and a hydroxyl-containing mono(meth)acrylate, and a bisphenol A epoxy (meth) acrylate; a monomer component comprising a phenoxy polyethylene glycol (meth)acrylate and a bisphenol A polyethoxydiol di(meth)acrylate; and a photopolymerization initiator. The resin composition has a refractive index of not less than 1.55 after resin curing.

Description

technical field [0001] The present invention relates to a photocurable resin composition for forming lenses, especially lenses such as Fresnel lenses and cylindrical mirrors used in projection televisions and the like, and an optical element made of the resin composition. Background technique [0002] Conventional Fresnel lenses are produced by compression molding or casting, which takes a long time to make the lens, and the yield is poor. In recent years, techniques for producing lenses using ultraviolet curable resins have been studied. Specifically, the ultraviolet curable resin composition is coated in a mold having a lens shape, the resin composition is sandwiched between a transparent resin substrate and the mold, and ultraviolet rays are irradiated from the substrate side to cure the resin composition. This enables the manufacture of lenses in a short time. In addition, with the recent reduction in thickness and size of projection TVs, people have higher requirement...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/00C08F290/06C08G18/62C08G18/67G02B1/04
CPCC08G18/672C08F290/06C08F283/006G02B1/04C08G18/6254C08L51/00C08G18/48C08F299/02C08F299/06
Inventor 土井康裕谷村俊之中尾诚明
Owner DAI NIPPON PRINTING CO LTD
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