Patent ID: 9624327
Date: 2017-04-18
CPC Classifications: C08F

Claim:
1. A method for producing a (meth)acrylic resin composition, the method comprising: continuously feeding methyl methacrylate (1), a chain transfer agent (3), and a radical polymerization initiator (4) into a tank reactor while controlling each amount of the methyl methacrylate (1), the chain transfer agent (3), and the radical polymerization initiator (4), performing bulk polymerization in the tank reactor at a polymerization conversion of 40 to 70% by mass to obtain a reaction product, recovering a mixture (A) comprising methyl methacrylate (1′) and a chain transfer agent (3′) from the reaction product, and continuously feeding the mixture (A) into the tank reactor, wherein each of the amounts of the methyl methacrylate (1) and the chain transfer agent (3) being fed into the tank reactor is controlled on the basis of information comprising an amount of the mixture (A) being fed into the tank reactor and proportions of the methyl methacrylate (1′) and the chain transfer agent (3′) in the mixture (A), and a perfect-mixing time of the tank reactor (θ