| 摘要 |
PROBLEM TO BE SOLVED: To provide an efficient method of manufacturing a methacrylic polymer composition containing a low molecular weight body and a high molecular weight body and having wide molecular weight distribution.SOLUTION: A method of manufacturing a methacrylic polymer composition includes a first polymerization process of supplying a raw material composition A containing a raw material monomer containing methyl methacrylate of 50 wt.% or more A, a polymerization initiator A and a chain transfer agent A into a first reaction tank to conduct continuous bulk polymerization and removing the obtained intermediate composition from the first reaction tank, and a second polymerization process of supplying a raw material composition B containing a raw material monomer containing methyl methacrylate of 50 wt.% or more B, a polymerization initiator B and a chain transfer agent B, and the intermediate composition removed in the first polymerization process into a second reaction tank to further conduct continuous bulk polymerization, and removing the obtained methacrylic polymer composition from the second reaction tank, and satisfies 120≤T1≤160, 140≤T2≤180, 20≤T2-T1≤60, 1.7≤[S2]/[S1] and 1≤Q1/Q2≤50. |
