Brightness enhancing film and methods of surface treating inorganic nanoparticles
Assignee3M Innovative Properties Company
InventorsDavid B. Olson, Clinton L. Jones, Brant U. Kolb, Emily S. Goenner, Mark J. Hendrickson, Taun L. McKenzie
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Abstract
Presently described are (e.g. brightness enhancing film) optical articles comprising the reaction product of a polymerizable resin and surface modified inorganic nanoparticles, methods of surface modifying inorganic nanoparticles, and surface modified inorganic nanoparticles. The surface treatment comprises at least one monocarboxylic acid having a refractive index of at least 1.50 and/or at least one monocarboxylic acid having a Mn of at least 200 g/mole and an ethylenically unsaturated group and/or at least one dicarboxylic acid.
Claims21
A brightness enhancing film comprising the reaction production of a polymerizable resin composition including inorganic nanoparticles surface modified with a surface treatment comprising a monocarboxylic acid having a refractive index of at least 1.50.
An optical article comprising the reaction production of a polymerizable resin composition including inorganic nanoparticles surface modified with a surface treatment comprising at least one monocarboxylic acid compatibilizer having a polar group in combination with at least one surface treatment selected from
- i) a monocarboxylic acid having a refractive index of at least 1.50;
- ii) a monocarboxylic acid having a Mn of at least 200 g/mole that copolymerizes with the polymerizable resin;
- iii) a dicarboxylic acid;
- and mixtures of two or more of i), ii), and iii).
A method of surface modifying inorganic nanoparticles by combining inorganic nanoparticles with a surface treatment comprising at least one monocarboxylic acid compatibilizer having a polar group in combination with at least one surface treatment selected from
- i) a monocarboxylic acid having a refractive index of at least 1.50
- ii) a monocarboxylic acid having a Mn of at least 200 g/mole and (meth)acrylate group;
- and mixtures of two or more of i) and ii).
Inorganic nanoparticles comprising a surface treatment comprising at least one monocarboxylic acid having a polar group in combination with at least one surface treatment selected from
- i) a monocarboxylic acid having a refractive index of at least 1.50
- ii) a monocarboxylic acid having a Mn of at least 200 g/mole and (meth)acrylate group;
- and mixtures of two or more of i)and ii).
Dependencies are inferred from the claim text.