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US 2012/0070655 A1Published application
Uv-reflecting compositions
AssigneeRohm and Haas Company
InventorsChao-Jen Chung, Edward E. Lafleur, Edwin Nungesser
Life of this patent
Estimating the term…
Abstract
A composition containing polymeric particles. The polymeric particles have an average particle diameter from 30 to 300 nm and a Vicker's scale hardness from 100 to 700 Kgf/mm2. The composition also contains a film-forming polymer having Tg no greater than 80° C. The refractive index difference between the polymeric particles and the film-forming polymer is at least 0.04.
Claims10
A composition comprising polymeric particles having:
- (a) an average particle diameter from 30 to 300 nm;
- and (b) a Vicker's scale hardness from 100 to 700 Kgf/mm2;
- and a film-forming polymer having Tg no greater than 80° C.;
- wherein a refractive index difference between the polymeric particles and the film-forming polymer is at least 0.04.
1 more element
A film comprising polymeric particles having:
- (a) an average particle diameter from 30 to 300 nm;
- (b) a Vicker's scale hardness from 100 to 700 Kgf/mm2;
- and a continuous polymeric phase having Tg no greater than 80° C.;
- wherein a refractive index difference between the polymeric particles and the continuous polymeric phase is at least 0.04;
- and
- wherein an average distance between the polymeric particles is from 35 to 400 nm.
3 more elements
Dependencies are inferred from the claim text.