The invention discloses a poly(pentabromobenzyl
acrylate) synthesizing method and belongs to the technical field of
brominated flame retardant synthesis. The synthesizing method comprises the steps of adding
acrylic acid and an emulsifier into a water phase, warming to 60 DEG C to 80 DEG C, gradually dropwise adding an
alkali metal alkoxide solution, adjusting a pH to be equal to 9 to 10, fully stirring and evenly mixing, adding a
phase transfer catalyst and a
polymerization inhibitor, maintaining a temperature as 60 DEG C to 80 DEG C, adding a pentabromobenzyl
chloride solution dissolved by
dichloropropane, keeping the temperature for 1 to 5 hours after dropwise adding the pentabromobenzyl
chloride solution, standing and layering, taking an
organic layer to be washed by water, filtering to obtain an intermediate solution, warming the solution to 90 DEG C, adding a dispersant, an initiator and a molecular
weight control agent to perform
polymerization reaction, adding a stabilizer and a pH modifier in a center control process, programmably warming, finally curing in high temperature and filtering and
drying to obtain a poly(pentabromobenzyl
acrylate) product with even molecular
weight distribution.