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Polymethacrylate composition, optical device made therefrom, and display apparatus

A polymethacrylate and methacrylate technology, which is applied in the field of optical components and display equipment, can solve problems such as affecting the optical properties of polymethacrylate, and achieve excellent display effects

Inactive Publication Date: 2019-07-19
CHI MEI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, additives to improve heat resistance are currently added to polymethacrylate, but it is found that such changes will affect the optical properties of polymethacrylate

Method used

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  • Polymethacrylate composition, optical device made therefrom, and display apparatus
  • Polymethacrylate composition, optical device made therefrom, and display apparatus
  • Polymethacrylate composition, optical device made therefrom, and display apparatus

Examples

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preparation example Construction

[0070] 1.1. Preparation of PMMA

[0071] First, mix 95 parts by weight of methyl methacrylate, 5 parts by weight of methyl acrylate, 0.4 parts by weight of n-dodecyl mercaptan, 0.08 parts by weight of 2,2'-azobisisobutyronitrile, and 66 parts by weight of toluene Afterwards, it is continuously sent to a reaction tank for continuous solution polymerization. The above-mentioned reaction tank is an interlayer with heat medium oil circulation, and the reaction temperature is maintained at 100° C. and the pressure is 600 torr. Thoroughly stir the components in the reaction tank to make them evenly mixed, and heat the obtained polymer solution to 265°C, then use a continuous devolatilization device to devolatilize the above polymer solution under reduced pressure, and then pass it through the extrusion equipment to produce strips. After cooling and pelletizing, polymethyl methacrylate plastic particles are obtained. The polymethyl methacrylate plastic particles contain 97 wt% of ...

Embodiment 1 to 9

[0090] Examples 1 to 9 are mixed according to the proportions of the ingredients listed in Table 2, and then mixed and extruded with an extruder at 240°C to granulate, and then the polymethacrylate compositions are obtained respectively. The haze (HAZE), The test results of yellowness (YI), light transmittance (T%) and glass transition temperature (Tg) are also described in Table 2.

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Abstract

The invention provides a polymethacrylate composition, an optical device made therefrom, and a display apparatus. The polymethacrylate composition includes 50 to 85 parts by weight of methacrylate series polymer, and 15 to 50 parts by weight of styrene series-maleic anhydride series copolymer. The methacrylate series polymer includes methacrylate series monomer unit and acrylate series monomer unit and has a weight average molecular weight (Mw) in a range between 20,000 and 200,000. Based on the total weight of the styrene series-maleic anhydride series copolymer, the styrene series-maleic anhydride series copolymer includes 76.5wt%-90wt% of styrene series monomer unit, and 10wt%-23.5wt% of maleic anhydride series monomer unit. A range of molecular weight distribution index (PDI) of the styrene series-maleic anhydride series copolymer is from 1.5 to 2.05.

Description

technical field [0001] The invention relates to a polymer composition, in particular to a polymethacrylate composition and the formed optical element and display device. Background technique [0002] Polymethacrylate (polymethacrylate) is a polymer with a wide range of uses. It has good evaluations in terms of processability, physical properties and mechanical properties, and its light transmittance is equivalent to that of glass, and the appearance of molded products is good. Therefore, it has become the current One of the most excellent polymer transparent materials, and is often used in various optical components or consumer goods, such as camera lenses, lenses, optical films, car taillights, billboards, etc. [0003] In recent years, with the development of thin and lightweight notebook computers, the demand for thinner and higher performance optical elements in display devices such as liquid crystal display devices has also increased. Moreover, as the application envir...

Claims

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Application Information

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IPC IPC(8): C08L33/12C08L35/00G09F9/00C08F220/14C08F212/08C08F222/06
CPCC08F212/08C08F220/14C08L33/12C08L2201/08G09F9/00C08L35/00C08F222/06
Inventor 高怡惠谢尚儒
Owner CHI MEI CORP
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