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Light-diffusing resin composition and light-diffusing molded body

A resin composition, light diffusing technology, applied in optics, optical elements, coatings, etc., can solve the problem that the light diffusing molded body cannot fully meet the high requirements

Inactive Publication Date: 2012-05-23
TAKEMOTO YUSHI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these conventional light-diffusing resin compositions have a problem that light-diffusing molded articles molded from these light-diffusing resin compositions cannot fully meet the high demands of recent years.

Method used

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  • Light-diffusing resin composition and light-diffusing molded body
  • Light-diffusing resin composition and light-diffusing molded body
  • Light-diffusing resin composition and light-diffusing molded body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0099] Add 0.6 parts of the organic silicone microparticles (T-1) synthesized in Test Part 1 to 100 parts of polycarbonate resin (trade name パンライト K1285 manufactured by Teijin Chemical Co., Ltd.). The twin-screw extruder was melt-kneaded and extruded at a resin temperature of 280° C. to prepare the granular light-diffusing polycarbonate resin composition (P-1) of Example 1.

Embodiment 2～8 and comparative example 1～9

[0101] The light-diffusing polycarbonate resin composition of Examples 2-8 and Comparative Examples 1-9 was produced similarly to preparation of the light-diffusing polycarbonate resin composition of Example 1. Table 5 summarizes the content of the light-diffusing polycarbonate resin composition of each example.

[0102] Test part 3 (manufacture and evaluation of light-diffusing polycarbonate resin molded article)

[0103] Using the light-diffusing polycarbonate resin composition of each example prepared in Test Part 2, an injection molding machine (Fanuc Co., Ltd., product name Roboshiyotto S-2000, screw rotation speed 80 rpm, screw diameter 26 mmΦ) was prepared. Molded under conditions of cylinder temperature 280°C, mold temperature 80°C, cooling time 30 seconds, and molding cycle 50 seconds to prepare a test piece of 200×500 mm and thickness 2 mm as a light-diffusing polycarbonate resin molded article. For this test piece, the total light transmittance, haze, heat-resistan...

Embodiment 9

[0153] Add 0.6 parts of the organic silicone microparticles (T-1) synthesized in Test Part 1 to 100 parts of polymethyl methacrylate resin (trade name Acrypet VH#001 manufactured by Mitsubishi Rayon Co., Ltd.) The twin-screw extruder with a vent was melt-kneaded and extruded at a resin temperature of 240° C. to prepare a granular light-diffusing polyacrylic resin composition of Example 9.

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Abstract

Disclosed are: a light-diffusing resin composition which is capable of providing a light-diffusing molded body that has excellent rigidity and dimensional stability, while having excellent heat resistance, light transmittance and light diffusibility at the same time; and a light-diffusing molded body which is molded using the light-diffusing resin composition. Specifically disclosed is a light-diffusing resin composition which contains 0.1-10 parts by mass of specific fine organic silicone particles per 100 parts by mass of a thermoplastic polymer material. Each of the specific fine organic silicone particles is composed of a polysiloxane crosslinked structure, and has a hollow hemispherical shape as a whole, said hemispherical shape being formed, when viewed in a longitudinal section, by an inner small minor arc (11), an outer large minor arc (21) covering the inner small minor arc (11), and edges (31) ranging between respective ends of the arcs.

Description

technical field [0001] The present invention relates to a light-diffusing resin composition and a light-diffusing molded article. In recent years, light-diffusing molded articles such as light-diffusing plates for backlight-type liquid crystal displays, antireflection films, light-diffusing films, light guide plates, lighting covers, reflective screens, and transmissive screens have been widely used. The light-diffusing molded article is required to be excellent in rigidity and dimensional stability, as well as excellent in heat resistance, light transmittance, light diffusibility, and the like. The present invention relates to a light-diffusing resin composition capable of obtaining a light-diffusing molded article satisfying the above requirements, and a light-diffusing molded article molded from the light-diffusing resin composition. Background technique [0002] Conventionally, as light-diffusing resin compositions, various compositions are known in which thermoplastic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L101/00C08L83/04
CPCC08G77/06C08L69/00C08G77/04C08L2205/20C08L67/00C08L33/00C08L25/00C09D7/1283C08L83/04C08L23/00C08L101/00G02B1/04
Inventor 斎藤千秋石川文义
Owner TAKEMOTO YUSHI KK