Patent ID: 8883253
Filing Date: 2014-11-11
Classification: C08C,C08F,C08J,C08L

Abstract:
1. A process for producing particles of a brominated butadiene polymer, comprising dispersing a solution of the brominated butadiene polymer to form droplets, and applying the droplets onto a mechanically agitated bed of seed particles heated to a temperature of 40 to 70° C. in a reaction vessel at a subatmospheric pressure, such that the droplets coat the surfaces of seed particles substantially without agglomerating individual particles and solvent volatilizes from the coated seed particles before the coated seed particles become contacted by successive droplets of the brominated butadiene solution that are subsequently introduced into the reaction vessel, to form substantially nonagglomerated product particles having a solid external layer of the brominated butadiene polymer, wherein the process is performed continuously and a stable population balance of particles is maintained in the reaction vessel.