Patent ID: 7598317
Filing Date: 2009-10-06
Classification: C08F,Y10S

Abstract:
1. A method of making a precision fragmentation assemblage, comprising the steps of: (A) polymerizing a first monomer in aqueous medium to form plural fragmentation domains dispersed in said aqueous medium, said fragmentation domains comprising a first polymer; (B) combining a second monomer with said fragmentation domains in said aqueous medium; (C) optionally, combining a porogen with said fragmentation domains in said aqueous medium; (D) optionally, combining plural polymeric nanoparticles with said fragmentation domains in said aqueous medium; (E) agglomerating said plural fragmentation domains to form one or more agglomerate particles comprising said fragmentation domains, said second monomer, optionally said porogen, and optionally said polymeric nanoparticles; and (F) polymerizing said second monomer to form a second polymer,