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US 7,547,476 B2Granted
Polymerizable compositions comprising nanoparticles
Assignee3M Innovative Properties Company
InventorsClinton L. Jones, David B. Olson, Emily S. Goenner, Brant U. Kolb, John T. Brady
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Abstract
Polymerizable compositions comprising nanopartilces particularly useful for brightness enhancing films.
Claims33
A brightness enhancing film having a microstructured optical layer comprising the reaction product of a polymerizable resin composition comprising:
- a) one or more first monomers selected from the group consisting of:
- i) a monomer comprising a major portion having the structure
- wherein R1 is independently hydrogen or methyl,
- R2 is hydrogen,
- Q is 0, and
- Z is independently —C(CH3)2—, —CH2—, or —C(O)—;
- ii) a monomer comprising a major portion having the structure
- wherein R1 is independently hydrogen or methyl,
- R2 is hydrogen,
- Q is 0,
- Z is independently —C(CH3)2—, —CH2—, or —C(O)—, and
- L is a linking group independently selected from linear or branched C2-C8 alkyl groups wherein the carbon chain is substituted with one or more oxygen groups, one or more hydroxyl groups, or a combination thereof;
- and mixtures of i and ii;
- b) at least about 10 wt-% of surface modified colloidal inorganic nanoparticles;
- c) up to 35 wt-% of a reactive diluent;
- and
- d) optionally a crosslinking agent.
14 more elements
A substantially solvent free polymerizable resin composition comprising
- a) at least about 15 wt-% of one or more first monomers selected from the group consisting of:
- i) a monomer comprising a major portion having the structure
- wherein R1 is independently hydrogen or methyl,
- R2 is hydrogen,
- Q is 0 or, and
- Z is independently —C(CH3)2—, —CH2—, or —C(O)—;
- ii) a monomer comprising a major portion having the structure
- and mixtures of i and ii;
- wherein R1 is independently hydrogen or methyl,
- R2 is hydrogen,
- Q is 0,
- Z is independently —C(CH3)2—, —CH2—, or —C(O)—, and
- L is a linking group independently selected from linear or branched C2-C8 alkyl groups wherein the carbon chain is substituted with one or more oxygen groups, one or more hydroxyl groups, or a combination thereof;
- b) at least about 10 wt-% of surface modified colloidal inorganic nanoparticles;
- c) up to 35 wt-% of a non-brominated reactive diluent;
- d) optionally a crosslinking agent;
- and
- e) a photoinitiator.
15 more elements
A brightness enhancing film comprising:
- a brightness enhancing microstructured optical layer comprising the reaction product of a substantially solvent free polymerizable composition comprising an organic component comprising at least one monofunctional and at least one difunctional ethylenically unsaturated monomers wherein the organic component has a viscosity of less than 1000 cps at 180° F.;
- and
- at least 10 wt-% of surface modified inorganic nanoparticles.
A brightness enhancing film comprising:
- a brightness enhancing microstructured optical layer comprising the reaction product of a substantially solvent free polymerizable composition comprises an organic component comprising at least one difunctional ethylenically unsaturated monomers and a non-brominated reactive diluent wherein the organic component has a refractive index of at least 1.54;
- and
- at least 10 wt-% surface modified inorganic nanoparticles.
A brightness enhancing film comprising:
- a brightness enhancing microstructured optical layer comprising the reaction product of a substantially solvent free polymerizable composition having a refractive index of at least 1.54 comprising a reactive diluent and at least 10 wt-% of surface modified inorganic nanoparticles.
Dependencies are inferred from the claim text.