Methacrylic resin composition, preparation method thereof, particles and moulded body

A methacrylic, resin composition technology, applied in the directions of instruments, optics, optical components, etc., can solve problems such as the generation of carbides, and achieve the effects of less foreign matter content, excellent physical properties and appearance, and excellent continuous production.
CN107540779AActive Publication Date: 2018-01-05ASAHI KASEI KK
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ASAHI KASEI KK
Publication Date
2018-01-05

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Abstract

The purpose of the invention is to provide a methacrylic resin composition which has excellent continuous productivity and less content of foreign matters and can prepare a moulded body with excellentphysical property and appearance and also provide a preparation method of the methacrylic resin composition, particles and the moulded body. According to the invention, the composition contains methacrylic resin which contains more than 50 mass percent of a methacrylate monomer unit (A) and has ring structure, a glass-transition temperature is 110 DEG C to 160 DEG C, a particle counter is used for measuring, and each 1g contains less than 100 of foreign matters with partical sizes of more than 10[mu]m and less than 20[mu]m; the prepare method comprises: when an extruder runs, delivery volumes(delivery volumes / number of holes) of the methacrylic resin composition from holes of each die is more than 5kg / (hr*number) and less than 30 kg / (hr*number).
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Description

technical field

[0001] The present invention relates to a methacrylic resin composition with a low content of fine foreign matter, a method for producing the methacrylic resin composition, and a pellet and a molded article containing the methacrylic resin composition. Background technique

[0002] In recent years, with the expansion of the display market, the demand for viewing images more clearly has increased, and optical materials that have higher optical characteristics in addition to transparency, heat resistance, and strength are required.

[0003] Acrylic resins ((meth)acrylate polymers) are attracting attention as the above-mentioned optical materials from the viewpoints of transparency, surface hardness, optical properties, and the like. Moreover, in recent years, with the advancement of flat panel displays such as liquid crystal display devices, plasma displays, and organic EL display devices, infrared sensors, and optical waveguides, etc., and the expansion of the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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