Patent ID: 7875678
Filing Date: 2011-01-25
Classification: C08F,C08L

Abstract:
1. A process of making a high impact polystyrene comprising the steps of: (a) combining a first monovinylarene component, a coupled multimodal monovinylarene-conjugated diene block copolymer, and a first conjugated diene polymer to form an emulsion comprising a continuous phase and a dispersed phase, the continuous phase comprising at least a portion of the first monovinylarene component and at least a portion of the first conjugated diene polymer, the dispersed phase comprising globules having at least a portion of the coupled multimodal monovinylarene-conjugated diene block copolymer, the dispersed phase being suspended within the continuous phase; and (b) polymerizing the first monovinylarene component in the presence of the emulsion to produce the high impact polystyrene.