Ablemarle Corporation

United States of America

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IPC Class
A01J 21/02 - Machines for forming slabs of butter, or the like with extruding arrangements and cutting devices, with or without packing devices 1
B29B 9/06 - Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion 1
B29C 59/00 - Surface shaping, e.g. embossingApparatus therefor 1
B32B 5/16 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by features of a layer formed of particles, e.g. chips, chopped fibres, powder 1
C08C 19/14 - Incorporating halogen atoms into the molecule by reaction with halogens 1
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1.

Process technology for recovering brominated styrenic polymers from reaction mixtures in which they are formed and/or converting such mixtures into pellets or into granules or pastilles

      
Application Number 13619256
Grant Number 08450429
Status In Force
Filing Date 2012-09-14
First Publication Date 2013-01-10
Grant Date 2013-05-28
Owner Ablemarle Corporation (USA)
Inventor
  • Kolich, Charles H.
  • Balhoff, John F.
  • Luther, Douglas W.
  • Herndon, Robert C.
  • Lin, Ronny W.
  • Peters, Bruce C.
  • Mack, Arthur G.
  • Lee, David A.

Abstract

Brominated styrenic polymer is recovered from solution in a vaporizable solvent by converting the solution in a devolatilization extruder into a brominated styrenic polymer melt or flow and a separate vapor phase comprised predominately of vaporizable solvent, recovering the melt or flow from the devolatilization extruder, and allowing or causing the melt or flow to solidify. The solidified brominated styrenic polymer can be subdivided into a powder or pelletized form. Pellets so made have improved hardness and/or crush strength properties along with reduced formation of fines. Brominated anionic styrenic polymer is preferably used in the process.

IPC Classes  ?

  • C08F 12/08 - Styrene
  • C08F 8/18 - Introducing halogen atoms or halogen-containing groups
  • C08C 19/14 - Incorporating halogen atoms into the molecule by reaction with halogens
  • B32B 5/16 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by features of a layer formed of particles, e.g. chips, chopped fibres, powder
  • A01J 21/02 - Machines for forming slabs of butter, or the like with extruding arrangements and cutting devices, with or without packing devices
  • B29C 59/00 - Surface shaping, e.g. embossingApparatus therefor
  • B29B 9/06 - Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion