Patent ID: 9557445
Date: 2017-01-31
CPC Classifications: C08K,C08L,G02B

Claim:
1. A translucent, light-diffusing material comprising a blend composition of a) a thermoplastic polymer matrix material, b) from 0.01 to 40 weight percent of organic polymer diffusing particles that are refractive index (R.I.) mis-matched to the matrix polymer, wherein the absolute difference between the matrix polymer and diffusing organic polymer particles is from greater than 0.02 to 0.2, wherein said organic polymer diffusing particles are spherical or near-spherical and have a mean particle size of from 0.6 to 25 microns, c) from 0.1 to 15 weight percent of inorganic diffusing particles, wherein said weight percents are based on the weight of the total light-diffusing composition, wherein said inorganic diffusing particles are selected from the group consisting of barium sulfate, titanium dioxide, zinc oxide, and mixtures thereof, and wherein both a 0.03 inch and 0.08 inch film made of the blend composition have a luminous transmission of greater than 40%, an optical haze of greater than 90%, and a diffuse light scattering of greater than 85%.