| abstract |
(57) [Abstract] [Purpose] A polyphenylene oxide resin composition having improved water resistance, moisture resistance, heat resistance after moisture absorption, and glass transition point, a prepreg using the polyphenylene oxide resin composition, and a laminate using the prepreg. Provide the board. In a varnish obtained by adding a solvent to a PPO resin composition containing PPO, TAIC, a compatibilizer and a flame retardant, the flame retardant is a brominated organic compound that does not react with PPO and TAIC, and , Not dissolved in the solvent, It is dispersed and the true specific gravity is 3.0 or less. 30-6 PPO It contains 0 parts by weight and TAIC in a proportion of 35 to 62 parts by weight, and the content of bromine is 8 to 20% by weight based on the total amount of the PPO resin composition. A substrate is impregnated with the PPO resin composition, and a predetermined number of semi-cured prepregs that have been dried by heating are heated and pressed to form a laminate. |