Light-diffusing resin composition and molded article thereof
A technology of resin composition and light diffusion, which is applied in optics, optical components, nonlinear optics, etc., can solve the problems of impact resistance, reduced flame retardancy, and insufficient light diffusion, and achieve impact resistance and light resistance. Excellent flammability, high dispersion, and excellent light diffusing effects
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[0130] The present invention will be specifically described below based on examples, but the present invention is not limited to the following examples. In addition, in the following description, "part" and "%" mean "part by mass" and "% by mass", respectively.
[0131] 1. Evaluation method of physical properties
[0132] Evaluation methods performed on macromonomers, crosslinked resin microparticles (Y), molded articles produced from light-diffusing resin compositions, and the like are as follows.
[0133] (1) Number average molecular weight (Mn) and weight average molecular weight (Mw)
[0134] The macromonomer or the prepolymer used as its manufacturing raw material is subjected to gel permeation chromatography (GPC), and the number average molecular weight (hereinafter referred to as " Mn") and weight average molecular weight (hereinafter referred to as "Mw").
[0135] As a GPC apparatus, "HLC-8220GPC" manufactured by Tosoh Corporation was used, and as a column, "TSK-GE...
Synthetic example 1
[0157] Synthesis example 1 (manufacture of macromonomer MM-1)
[0158]200 parts of ion-exchanged water were placed in a glass-made reaction container equipped with a stirrer, a reflux cooler, a thermometer, a nitrogen gas introduction tube, and a liquid-feeding piping connection. Next, the water temperature in the reaction vessel was adjusted to 80° C. while stirring and introducing nitrogen gas. On the other hand, 36.35 parts of methyl methacrylate (hereinafter referred to as "MMA"), 36.35 parts of isobutyl methacrylate (hereinafter referred to as "IBMA"), and 20 parts of methacrylic acid (hereinafter referred to as "MAA") and 7.3 parts of 2-ethylhexyl thioglycolate (hereinafter referred to as "OTG") were stirred to prepare a monomer mixture (100 parts). After confirming that the temperature of the water in the glass reaction vessel was stable at 80°C, an initiator of dissolving 0.8 parts of ammonium persulfate (hereinafter referred to as "APS") as a polymerization initiator...
Synthetic example 2
[0160] Synthesis example 2 (manufacture of macromonomer MM-2)
[0161] A pressurized stirred tank reactor with a capacity of 500 ml equipped with a heating device using thermal oil was filled with ethyl 3-ethoxypropionate. Then, the reactor was heated to about 250°C. On the other hand, 20 parts of MMA, 55 parts of cyclohexyl acrylate (hereinafter referred to as "CHA"), 25 parts of acrylic acid (hereinafter referred to as "AA"), and 0.1 parts of di-tert-butyl peroxide (hereinafter referred to as "DTBP") Mix the parts to prepare the monomer mixture, and put it into the raw material tank.
[0162] Next, while keeping the pressure in the reactor constant above the vapor pressure of ethyl 3-ethoxypropionate through a pressure regulator, the monomer mixed liquid was continuously supplied from the raw material tank to the reactor, and Polymerization was carried out at 230°C. At this time, the supply rate was set so that the average residence time of the monomer mixed liquid in the...
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Abstract
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