| 摘要 |
A method of producing a (meth)acrylic resin composition. The method comprises a step of continuously feeding a reaction raw material including a chain transfer agent, a radical polymerization initiator and a monomer mixture comprising 80 to 100 % by mass of methyl methacrylate and 20 to 0 % by mass of an alkyl acrylate to a tank reactor through two or more feeding ports; a step of bulk polymerizing the monomer mixture in the tank reactor until a polymerization conversion of 40 to 70 % by mass to prepare a reaction product; and a step of removing the monomer mixture from the reaction product. The perfect mixing time (¸ M [hr]) of the tank reactor, the half-life (Ä 1/2 [hr]) of the radical polymerization initiator at the temperature in the tank reactor, the stirring power (Pv [kW/m 3 ]) of the tank reactor, the mean residence time (¸ [hr]) of the reaction raw material in the tank reactor, and the concentration (I [ppm]) of the radical polymerization initiator in the reaction raw material satisfy the following relationships: ¸ M > Ä 1/2 , and P v ׸×I×Ä 1/2 < 4. |
