Microstructured optical films comprising fluorene-containing monomer

Patent metadata

Field	Value
Publication number	US-9244193-B2
Application number	US-201313911336-A
Country	US
Kind code	B2
Filing date	Jun 6, 2013
Priority date	Dec 22, 2008
Publication date	Jan 26, 2016
Grant date	Jan 26, 2016

Abstract

Polymerizable resin compositions and microstructures comprising the reaction product of such polymerizable resin compositions are described. The microstructures comprise the reaction product of a polymerizable resin composition comprising an organic portion having a refractive index of at least 1.56 wherein the polymerizable resin composition comprises a fluorene-containing monomer.

First claim

What is claimed is:

1. A microstructured film comprising a polymerized microstructured surface wherein the microstructures comprise the reaction product of a polymerizable resin composition comprising an organic portion having a refractive index of at least 1.56, the organic component comprising a di(meth)acrylate monomer that is a fluorene-containing monomer and at least one aromatic monofunctional (meth)acrylate monomer that comprises a group selected from phenyl or biphenyl.

2. The microstructured film of claim 1 wherein the mono(meth)acrylate monomer is a sulfur-containing aromatic monomer.

3. The microstructured film of claim 1 wherein the polymerizable resin is non-brominated.

4. The microstructured film of claim 1 wherein the polymerizable resin is non-halogenated.

5. The microstructured film of claim 1 wherein the polymerizable resin comprises at least one aromatic monomer or oligomer having a refractive index of least 1.585.

6. The microstructured film of claim 1 wherein the polymerizable resin comprises no greater than 1% by weight of non-polymerizable additives other than photoinitiator.

7. The microstructured film of claim 1 wherein the polymerizable resin further comprises inorganic particles.

8. The microstructured film of claim 1 wherein the inorganic particles comprises zirconia.

9. The microstructured film of claim 1 wherein the film is a brightness enhancing film.

10. The microstructured film of claim 1 wherein the polymerizable resin further comprises a polymerizable ultraviolet absorbing compound.

11. A microstructured film comprising a polymerized microstructured surface wherein the microstructures comprise the reaction product of a polymerizable resin composition comprising an organic portion having a refractive index of at least 1.59 wherein the polymerizable resin composition comprises a fluorene-containing monomer.

12. The microstructured film of claim 11 wherein the organic component comprises a di(meth)acrylate monomer that is a fluorene-containing monomer and at least one aromatic monofunctional (meth)acrylate monomer that comprises a group selected from phenyl or biphenyl.

13. The microstructured film of claim 11 wherein the polymerizable resin is non-brominated.

14. The microstructured film of claim 11 wherein the polymerizable resin comprises at least one aromatic monomer or oligomer having a refractive index of least 1.585.

15. The microstructured film of claim 11 wherein the polymerizable resin further comprises a polymerizable ultraviolet absorbing compound.

16. A microstructured film comprising a polymerized microstructured surface wherein the microstructures comprise the reaction product of a polymerizable resin composition comprising an organic portion having a refractive index of at least 1.56 and a viscosity of less than 1000 cps at 25° C. wherein the polymerizable resin composition comprises a fluorene-containing monomer.

17. The microstructured film of claim 16 wherein the organic component comprises a di(meth)acrylate monomer that is a fluorene-containing monomer and at least one aromatic monofunctional (meth)acrylate monomer that comprises a group selected from phenyl or biphenyl.

18. The microstructured film of claim 16 wherein the polymerizable resin is non-brominated.

19. The microstructured film of claim 16 wherein the polymerizable resin comprises at least one aromatic monomer or oligomer having a refractive index of least 1.585.

20. The microstructured film of claim 16 wherein the polymerizable resin further comprises a polymerizable ultraviolet absorbing compound.

Assignees

• 3M Innovative Properties Co

Inventors

• Hunt Bryan V
• Nelson Eric W

Classifications

• C09D151/003

  grafted on to macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds (C09D151/04, C09D151/06 take precedence) · CPC title

• C08L51/08

  grafted on to macromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds · CPC title

• C08F289/00

  Macromolecular compounds obtained by polymerising monomers on to macromolecular compounds not provided for in groups C08F251/00 - C08F287/00 · CPC title

• C08L51/003

  grafted on to macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds (C08L51/04, C08L51/06 take precedence) · CPC title

• C08L2666/02

  Organic macromolecular compounds, natural resins, waxes or and bituminous materials · CPC title