1,4-Dichlorobenzene → α-Methylstyrene dimer

Participants

Reaction Conditions

Reaction Steps

Using the same procedure and equipment as in Example 1, the flask was charged with brominated styrene monomer (1004.2), dichlorobenzene (492 g), glycidyl methacrylate (5.11 g, 0.0359 mol), 2,4-diphenyl-4-methyl-1-pentene (20.13 g, 0.0851 mol) (α-methyl styrene dimer) and VAZO-52™ (1.03 g, 4.15 mmol). The solution was heated to about 90° C. until exotherm. It then reached a peak temperature of 141° C. after which the mixture was heated to 190° C. over 5-10 min and held at 190° C. for 40-45 min. Heating was halted; the solution (1509.3 g) was transferred to a 2-liter bottle, and cooled to room temperature. The material was split into four parts. Each part was precipitated into a 5-liter flask of 3400 mL acetone and 400 mL methanol. The precipitate was filtered over frit, dried at ambient temperature for about 14 h and oven dried at 110° C. for 8 h. A white powder (881 g) was isolated.

Provenance & Evidence