TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Gas: The inert gas is nitrogen.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (claimed): Aromatic dicarboxylic acid dihalogenated compound of formula (2), and anthranilic acid derivative are reacted in inert gas air flow and in organic solvent to obtain an amide compound of formula (3). The amide compound is reacted with a dehydrating agent to obtain the compound (I).X=halo.Preferred Composition: The organic solvent is ketone, aromatic hydrocarbon, halogenated hydrocarbon or ether. The dehydrating agent is acetic anhydride. The resin composition further contains stabilizer chosen from phosphorus stabilizer and hindered phenol type stabilizer.    TECHNOLOGY FOCUS - POLYMERS - Preferred Properties: The molded board with thickness of 2 mm produced using the resin composition has total light transmittance of 70% or more, haze of 2.0 or less before and after wet heat test, haze of 1.0 or less before and after weather proofing accelerated test and maximum peak of 380-480 nm and reflecting power of 60-80%. EXAMPLE - (In g) anthranilic acid (25) with purity of 99.9% dissolved in methyl isobutyl ketone (MIBK) (150) and terephthalic acid chloride (18) dissolved in MIBK (72) were mixed and reacted at 80-85 degrees C for 12 hours. Nitrogen was supplied into the reaction and crystals were produced by cooling the mixture. The crystals were spin dried to obtain 2,2'-phenylene bis(3,1-benzoxazine-4-one) (29) having purity of 98.6% with yield of 89.6%. The produced compound had sodium metal content of less than 1 ppm, yellowing index of -4.3 and maximum reflecting power of 105%. The obtained compound (0.3 parts mass), Macrolex violet B (RTM: pigment) (0.6 parts mass), Irgafos 168 (RTM: phosphite type stabilizer) (0.03), Irganox 1076 (RTM: hindered phenol type stabilizer) (0.05) and PANLITE L-1225 WP (RTM: aromatic polycarbonate) (100) were blended to obtain a resin composition. The molded article produced using the resin composition had total light transmittance of 89.6%, yellowing index of 0.6, haze of 0.3 before and after wet heat test and haze of 0.5 before and after weather proofing accelerated test.