Rohm and Haas Company

Luu T Le

Edwin Hugh Nungesser

Edward Ewart LaFleur

Eric Gustave Lundquist

Hailan Guo

A composition comprising: a blended product of: a matrix polymer; and from 0.05 to 2.5 wt % diffuser polymeric particles, wherein the diffuser polymeric particles are characterized by an average diameter from 2.0 to 8 micrometers, a particle size distribution such that at least 90 wt % of the polymer particles fall within &#xb1;30% of the volume average particle size, a refractive index, RI, from 1.50 to 1.55; a crosslinking level great than 4%; and wherein the diffuser polymeric particles are produced using at least one alkyl(meth)acrylate monomer copolymerized with from 5 wt % to 25 wt % crosslinking monomer selected from the group consisting of aliphatic crosslinking monomers, aromatic crosslinking monomers, and combinations thereof, and optionally, one or more comonomers selected from the group consisting of aryl(meth)acrylate monomers and monovinyl arenes is provided.

Light diffusing polymer composition, method of producing the same, and articles made therefrom

A composition comprising multistage polymeric particles having an average particle diameter from 0.5 to 15 &#x3bc;m and a Vicker's scale hardness from 100 to 700 Kgf/mm; and a film-forming polymer having Tno greater than 80&#xb0; C. The refractive index difference measured from 400 nm to 800 nm between the polymeric particles and the film-forming polymer is no greater than 0.02 and the average refractive index difference measured from 800 nm to 2500 nm between the polymeric particles and the film-forming polymer is at least 0.04.

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Glenside, PA, United States of America

Luu T Le