process for the recovery of brominated styrene polymer from the mixture in a vaporizable organic solvent; process for the production of pelleted bromine styrene polymers from the mixture in a vaporizable organic solvent; a process for the preparation of a brominated styrene polymer in the form of a melt or polymer stream; process for the preparation of a brominated styrene polymer in pelletized form; process for the production of polymers pelleted brominated styrene, pellets of pure anionic-chrome styrene polymer; process for the production of pure brominated anionic styrene polymer granules or pellets; A process for the preparation of a bromine styrene polymer in the form of granules or pellets of pure bromine anionic styrene polymer

摘要

PROCESS FOR RECOVERY OF STRENIC POLYMER BROMINATED FROM MIXTURE IN A VAPORIZABLE ORGANIC SOLVENT .; PROCESS FOR THE PRODUCTION OF BROMINATED STERENIC POLYMERS MADE FROM A MIXTURE IN A VAPORIZABLE ORGANIC SOLVENT; PROCESS FOR THE PREPARATION OF A BROMINATED STIRENIC POLYMERS IN THE FORM OF A FUSED PASTA OR PLIMMER FLOW; PROCESS FOR THE PREPARATION OF A BROMINATED STIRENIC POLYMER IN PELLED FORM; PROCESS FOR THE PRODUCTION OF POLYMER PELTIZED BROMINATED STIRENICS, PULINS OF PURE BROMINATED ANIANIC OLYMER; PROCESS FOR THE PRODUCTION OF PURE BROMINATED STIRENIC POLYMER BEADS OR PADS; PROCESS FOR THE PREPARATION OF A BROMINATED STIRENIC POLYMER IN THE FORM OF PURE BROMINATED ANYNIC POLYMER BEADS OR PADS. It is the recovery of a brominated styrene polymer from the solution in a vaporizable solvent by converting the solution into a devolatilization extruder into a melt or stream of brominated styrene polymer and a separate gas phase composed predominantly of the vaporizable solvent. by recovering the melt or stream from the devolatilization extrusion, and allowing or causing the melt or stream to silify. The solidified brominated polymer can be subdivided into a powder or pelletized form. The pellets thus produced have improved hardness and / or resistance to deformation together with reduced formation of fine solids. Preferably a brominated anionic styrene polymer is used in this process.