Patent ID: 7442754
Filing Date: 2008-10-28
Classification: A61K,B01J,B82Y,G01N,G03F,Y02C,Y10T

Abstract:
1. Polymeric particles, which are molecularly imprinted, produced by a process comprising the steps of: expanding through a nozzle or an orifice a mixture containing a propellant in liquid form, monomers, and a template which does not covalently bond to said monomers to form particles containing said monomers in the presence of said template and to release said propellant from said mixture in the form of a gas; polymerizing said monomers in said particles in the presence of said template to form composite particles having polymer and template, wherein said template is not covalently bound to said polymer; and extracting said template from said composite particles without distorting a morphology of said composite particles to provide polymerized particles imprinted by said template with a size and arrangement of chemical functional groups complementary to said template wherein said polymerized particles imprinted by said template are 1 micron or less in size.