Alpha-Methylstyrene → Ethenylbenzene--(prop-1-en-2-yl)benzene (1/1)
Reaction equation
[CH3:1][C:2]([C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][CH:5]=1)=[CH2:3].[CH2:10]=[CH:11][C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1>>[CH3:3][C:2]([C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][CH:5]=1)=[CH2:1].[CH2:10]=[CH:11][C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1Participants
Procedure
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).
Workup
- customcopolymerized
- customby the same emulsion polymerization method
Sources & evidence
- ORD record
- ord-c979c999ee5b469683eb45c398dc4282
- Source dataset
- uspto-grants-1984_12
- Patent number
- US04487892
Reaction notes
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