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Polycarbonate resin composition, optical molded body using the same, and illumination unit

A technology of resin composition and polycarbonate, applied in the direction of optical components, optics, nonlinear optics, etc., to achieve good light guiding effect

Inactive Publication Date: 2009-05-13
IDEMITSU KOSAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the status quo is that it has not been technically established as a material exhibiting excellent light guiding performance and formability

Method used

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  • Polycarbonate resin composition, optical molded body using the same, and illumination unit
  • Polycarbonate resin composition, optical molded body using the same, and illumination unit
  • Polycarbonate resin composition, optical molded body using the same, and illumination unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0148] Hereinafter, the present invention will be described in more detail through examples, but these examples do not limit the present invention in any way.

[0149] In addition, each physical property (performance) was measured by the following method.

[0150] (1) Total light transmittance (measurement of transmittance and mist)

[0151] A molded product with a length of 35 mm, a width of 25 mm, and a thickness of 2.0 mm was prepared by injection molding, and measured with a D65 light source using a direct-reading turbidity meter HGM-20DP of Suga Test System.

[0152] (2) Color tone evaluation (YI-1)

[0153] A molded product having a thickness of 2.0 mm was prepared by injection molding, and measured by a transmission method with a measurement area of ​​30Φ and a C2 light source using a spectrophotometer Σ90 manufactured by Nippon Denshoku.

[0154] (3) Fluidity of particles: Q value (melt fluidity (Q value))

[0155] The amount (mL / sec) of molten resin flowing out fro...

manufacture example 1

[0166] Synthesis process of polycarbonate oligomer

[0167] In 5.6% by mass of sodium hydroxide aqueous solution, 2000 ppm of sodium dithiocarbonite was added to bisphenol A (hereinafter, sometimes abbreviated as BPA) to be dissolved later, and BPA was dissolved therein so that the BPA concentration was 13.5% by mass. An aqueous sodium hydroxide solution of BPA was prepared.

[0168] Pass into the sodium hydroxide aqueous solution of this BPA continuously with the flow rate of 40L (liter) / hr in the tubular reactor of internal diameter 6mm, tube length 30m, pass into dichloromethane with the flow rate of 15L / hr, with 4.0kg / hr The flow rate of hr is passed into carbonyl chloride.

[0169] The tubular reactor used here has a double-pipe jacket portion, and cooling water is passed through the jacket portion to keep the discharge temperature of the reaction solution at 40° C. or lower.

[0170] The reaction solution leaving the tubular reactor is continuously introduced into th...

manufacture example 2

[0180] A PC copolymer (b) was obtained in the same manner as Production Example 1, except that the amount of the potassium hydroxide aqueous solution of bisphenol M was changed as follows and that the sodium hydroxide aqueous solution of bisphenol A was not added.

[0181] Depend on 13 The molar ratio of the repeating structural unit derived from BPM to the repeating structural unit derived from BPA determined by C-NMR was 22:78.

[0182] (Potassium hydroxide aqueous solution of bisphenol M)

[0183] 957 g of KOH and 1.9 g of sodium dithiocarbonate were dissolved in 5.5 L of water, and 1738 g of bisphenol M was dissolved in this aqueous solution.

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Abstract

Disclosed is a polycarbonate resin composition obtained by blending a specific amount of an acrylic resin (B) having a specific viscosity average molecular weight or a specific amount of a polyorganosiloxane into a polycarbonate resin containing a polycarbonate copolymer (A) having repeating structural units represented by the general formulae (I) and (II) below. This polycarbonate resin composition enables to obtain a molded body having good light conductivity and being free from yellowing due to thermal deterioration, even when it is molded into a large-sized light guide member or light guide plate.

Description

technical field [0001] The present invention relates to a polycarbonate-based resin composition suitable for production of optical moldings such as light guide members, an optical molding and a lighting unit using the polycarbonate-based resin composition. More specifically, the present invention relates to a polycarbonate-based resin composition (1) containing an acrylic resin as an essential component in a polycarbonate copolymer having a specific repeating structural unit, or the present invention The present invention relates to a polycarbonate-based resin composition (2), which preferably mixes a specific amount of polycarbonate resin and polycarbonate resin other than the polycarbonate copolymer in the polycarbonate copolymer. It is made of organosiloxane (D), and also relates to an optical molding (optical molding) using the above two compositions, and the optical molding (optical molding) is used for light guide plates and the like in the field of liquid crystal displa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00G02B6/00G02F1/13357G02F1/1335
Inventor 石川康弘
Owner IDEMITSU KOSAN CO LTD
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