Patent ID: 6780501
Filing Date: 2004-08-24
Classification: C08L,Y10T

Abstract:
In a thermoplastic composition suitable for shaped light-scattering articles comprising a transparent thermoplastic formed from (meth)acrylic (co)polymer and light-scattering particles, the improvement wherein the light scattering particles comprise polytetrafluoroethylene (PTFE) particles or a mixture of PTFE particles with particles selected from the group consisting of (A) mineral particles, (B) particles of an organic compound, and mixtures thereof, said light-scattering particles having a mean size of 0.5 &mgr;m to 200 &mgr;m and a refractive index which differs from that of the transparent thermoplastic by at least Â±0.05 and being used in an amount, with respect to the total composition of 5 ppm to 2000 ppm by weight.