Patent ID: 8133938
Filing Date: 2012-03-13
Classification: B05D,C08F,C08L,C09D,G01N,G02B,Y10T

Abstract:
1. A radiation diffraction material comprising: an ordered periodic array of packed particles that diffracts radiation, said array defining interstitial spaces between particles in the array; and a polymeric matrix filled into said interstitial spaces between said packed particles, wherein said particles each comprise a core surrounded by a shell of a non-film forming composition that is different from said matrix, wherein the refractive index of said core is different from the refractive index of said shell, wherein said shell has a gradient of refractive index across the thickness of the shell, and wherein said matrix is produced from crosslinkable monomers and said monomers are present in said shell in a concentration gradient across the thickness of said shell.