反应详情

In this example, α-methylstyrene and styrene were copolymerized by the same emulsion polymerization method as described in Example 1 to obtain α-methylstyrene-styrene copolymer [hereinafter abbreviated as P(αMS/S)]. That is, α-methylstyrene-styrene copolymer having Tg of 114° C. was obtained in a conversion of 90% after the copolymerization at 15° C. for 10 hours by using 35 parts by weight of α-methylstyrene and 65 parts by weight of styrene (Example 3). Further, α-methylstyrene-styrene copolymer having Tg of 129° C. was obtained in a conversion of 60% after the copolymerization at 15° C. for 20 hours by using 55 parts by weight of α-methylstyrene and 45 parts by weight of styrene (Example 4). And also, α-methylstyrene-styrene copolymer having Tg of 149° C. was obtained in a conversion of 40% after the copolymerization at 15° C. for 30 hours by using 85 parts by weight of α -methylstyrene and 15 parts by weight of styrene (Example 5).

1. customcopolymerized
2. customby the same emulsion polymerization method