Eastman Kodak Company
COATING PROVIDING PANCHROMATIC SCATTERING

Abstract:

An article includes a substrate with a surface, and a coating disposed over the surface. The coating includes a binder material and a plurality of porous polymer particles having pores with a variety of pore sizes including a first set of pores having a first average pore size d1 in the range 0.3.ltoreq.d1/.lamda.1.ltoreq.0.7, wherein .lamda.1 is a wavelength in the range of 250-400 nm, a second set of pores having a second average pore size d2 in the range 0.3.ltoreq.d2/.lamda.2.ltoreq.0.7, wherein .lamda.2 is a wavelength in the range of 400-700 nm, and a third set of pores having a third average pore size d3 in the range 0.3.ltoreq.d3/.lamda.3.ltoreq.0.7, wherein .lamda.3 is a wavelength in the range of 700-3000 nm, wherein the porous polymer particles have a shell which is impermeable to a liquid.