Patent ID: 9050778
Filing Date: 2015-06-09
Classification: B32B,C08F,Y10T

Abstract:
1. An article that comprises one or more crosslinked organic porous particles wherein each crosslinked organic porous particle comprises a crosslinked organic polymer that provides a crosslinked organic solid phase including an external particle surface and first and second discrete pores that are isolated from each other and dispersed within the crosslinked organic solid phase, the first and second discrete pores having an average size greater than or equal to 0.1 μm, wherein the mode particle size of the crosslinked organic porous particles is at least 3 μm and up to and including 100 μm, wherein the crosslinked organic porous particles further comprise a first marker material that is present within only the volume of the first discrete pores, and the volume of the second discrete pores is at least partially occupied by a second marker material, which first and second marker materials are detectably different.