| 摘要 |
Core/shell impact modifiers, useful in toughening poly(vinyl chloride) and other thermoplastics, are prepared at small particle sizes by an emulsion polymerization process, agglomerated by a novel technique which has little effect on emulsion solids, are further encapsulated by a final shell, and are isolated by spray-drying or coagulation. The isolated particles are readily re-dispersed to their original particle size in the matrix polymer.
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