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Optical part made from injection molding object and resin composition for forming same

A technology of injection molding and resin composition, applied in optical elements, diffusing elements, applications, etc., can solve the problems of rising cost, difficulty in injection molding, expensive ring-opening polymerization catalyst, etc., and achieve high transparency and high The effect of refractive index

Active Publication Date: 2012-07-18
JSR CORPORATIOON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the former norbornene-based ring-opening polymer containing an aromatic ring has the problem that the production of the monomer used and the ring-opening polymerization catalyst are expensive, so the cost is likely to increase. On the other hand, the latter styrene-based resin blended with In many cases, the compound undergoes phase separation at a high temperature of 200 to 300°C, which is equivalent to the injection molding temperature, so it is very difficult to obtain a transparent injection molded product.
Furthermore, when it is necessary to maintain transparency without phase separation, the amount of styrene-based resin added is limited, and there is a problem that desired optical properties cannot be obtained.

Method used

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  • Optical part made from injection molding object and resin composition for forming same
  • Optical part made from injection molding object and resin composition for forming same
  • Optical part made from injection molding object and resin composition for forming same

Examples

Experimental program
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Effect test

Embodiment

[0220] Hereinafter, the present invention will be described in more detail based on examples, but the present invention is not limited by these examples. In the following examples and comparative examples, "parts" and "%" mean "parts by weight" and "% by weight" unless otherwise specified.

[0221] [Evaluation of Cyclic Olefin-Based Resin (B)]

[0222]

[0223] Gel permeation chromatography (HLC-8220GPC manufactured by Tosoh Corporation, column: guard column H manufactured by Tosoh Corporation) XL -H, TSK gel G7000H XL 、TSK gel GMH XL Two sticks and TSKgel G2000H XL Sequential connection; solvent: tetrahydrofuran; flow rate: 1 mL / min; sample concentration: 0.7 to 0.8% by weight; injection volume: 70 μL; measurement temperature: 40°C; Standard Polystyrene), the weight average molecular weight (Mw) and molecular weight distribution (Mw / Mn) of polystyrene (A) and cyclic olefin resin (B) were measured.

[0224]

[0225] Using a TGA thermal balance (manufactured by SII Cor...

Synthetic example 1

[0231]

[0232] The 8-methyl-8-methoxycarbonyltetracyclo[4.4.0.1 shown in the following formula (2) 2，5 .1 7，10 100 g of ]-3-dodecene (DNM), 3.6 g of 1-hexene as a molecular weight modifier, and 200 g of toluene were put into a reaction vessel replaced with nitrogen, and heated to 80°C. Add 0.21 mL of triethylaluminum (0.6 mol / L) toluene solution and methanol-modified WCl 6 0.86 mL of toluene solution (0.025 mol / L) was reacted at 80° C. for 1 hour to obtain a ring-opened polymer solution. Then, RuHCl(CO)[P(C 6 h 5 ) 3 ] 3 0.04 g, make the hydrogen pressure 9-10 MPa, and react at a temperature of 160-165° C. for 3 hours. After completion of the reaction, the obtained product was precipitated in a large amount of methanol to obtain a cyclic olefin resin (B1).

[0233] The obtained cyclic olefin resin (B1), Mw=14.4×10 4 , Mw / Mn=3.25, Tg=167°C, hydrogenation rate=99.0% or more.

[0234]

Synthetic example 2

[0236]

[0237] The 8-methyl-8-methoxycarbonyltetracyclo[4.4.0.1 shown in the above formula (2) 2，5 .1 7，10 ]-3-dodecene (DNM) 585g (2.518mol), 5-methyl-5-methoxycarbonylbicyclo[2.2.1]hept-2-ene 315g (1.895mol), as molecular weight regulator 1 35.2 g (0.419 mol) of -hexene and 1,350 g of toluene were placed in a reaction vessel replaced with nitrogen, and heated to 80°C. Add 4.70mL of triethylaluminum toluene solution (concentration of triethylaluminum is 0.61mol / L) and methanol modified WCl 6 Toluene solution (methanol modified WCl 6 The concentration is 0.025mol / L) 17.65mL, and reacted at 80°C for 1 hour to obtain a ring-opened copolymer solution.

[0238] 370 g of the obtained ring-opened copolymer solution was put into a reaction kettle, and 80 g of toluene was added. Then, RuH(OCOCH 3 )(CO)[P(C 6 h 5 ) 3 ] 2 After 0.032g, introduce hydrogen gas to make the gauge pressure reach 10MPa, keep the pressure at 10MPa, heat to 160-165°C, and carry out the reaction for ...

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Abstract

The invention relates to an optical part made from an injection molding object and a resin composition for forming the same. The optical part made from the injection molding object has high refractive index, excellent transparency and is formed by a resin composition which comprises A 1-40 parts by weight of polystyrene with a weight average molecular weight (Mw) of 1000-5000 equated according topolystyrene and measured by GPC and B 100 parts by weight of annular olefin resin with the glass-transition temperature (Tg) of 100-180 DEG C.

Description

technical field [0001] The present invention relates to an injection molded optical component formed of a resin composition containing polystyrene and a cyclic olefin resin. Background technique [0002] Injection-molded products such as optical parts using glass are gradually being replaced by plastics that are excellent in productivity, impact resistance, and light weight. For example, lenses for digital cameras, lenses for mobile phones, imaging lenses for CD and Blu-ray, optical lenses represented by microlenses, substrates such as disks, light guide plates, prism sheets, etc. are also gradually using polycarbonate and polymethyl methacrylate. , Cyclic olefin resin. However, polycarbonate has a large birefringence, and polymethyl methacrylate has problems of low heat resistance and high water absorption. [0003] Cyclic olefin-based resins have high glass transition temperature, high light transmittance, and small refractive index anisotropy, so they have the character...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B1/04B29C45/76B29L11/00
CPCC08L23/00C08L25/04C08L45/00G02B5/02
Inventor 鹫见浩一山崎大辅梶原一郎中村和洋
Owner JSR CORPORATIOON