Patent ID: 8163827

Claim:
A translucent, white, light-diffusing thermoplastic composition comprising, in blended form, a) an acrylic matrix polymer; b) 0.1 to 5 weight percent of one or more white pigments; c) 0.3 to 15 weight percent of refractive index-matched polymer particles, wherein said refractive index-matched polymer particles have a refractive index within 0.01 units of said thermoplastic, matrix polymer, wherein said composition is in the form of a sheet, film, profile or pellet, and wherein a 0.080 inch thick sheet of said light-diffusing composition has a luminous transmission of greater than 60%, a hiding power of greater than 0.8, a diffusion factor of greater than 0.62, and a half gain angle of at least 50 degrees.