Microagglomeration of impact modifiers

Details Microagglomeration of impact modifiers Microagglomeration of impact modifiers

1992-11-09

1994-05-17

Theisen, Mary Lynn

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

264 5, 264112, 264117, 2641761, 26432818, B29C 4500, B29C 4700, B29B 908

Patent

active

053125754

ABSTRACT:
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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