IP Library › Patent Application 15841028
Patent Application
App. No. 15/841,028

BENZYL (METH)ACRYLATE MONOMERS SUITABLE FOR MICROSTRUCTURED OPTICAL FILMS

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Quick Facts
Patent No.
US None
App. No.
15/841,028
Abstract

Presently described are optical films comprising a polymerized (e.g. microstructured) surface that comprises the reaction product of a polymerizable resin composition and polymerizable resin compositions that comprise nanoparticles; at least one first monomer comprising at least two (meth)acrylate groups; and at least one second (meth)acrylate monomer having the structure wherein at least one R1 comprises an aromatic substituent, t is an integer from 1 to 4, and R2 is hydrogen or methyl.

Claims (35)

1 . An optical film comprising a polymerized microstructured surface that comprises the reaction product of a polymerizable resin composition comprising

nanoparticles;

at least one first monomer comprising at least two (meth)acrylate groups; and

at least one second (meth)acrylate monomer having the structure

wherein at least one R1 comprises an aromatic substituent,

t is an integer from 1 to 4, and

R2 is hydrogen or methyl.

2 . The optical film of claim 1 wherein t is 1.

3 . The optical film of claim 1 wherein R1 is selected from the group consisting

4 . The optical film of claim 1 wherein the monomer has a refractive index of at least 1.54.

5 . The optical film of claim 1 wherein the monomer has a viscosity of less than 100 cps at 25° C.

6 . The optical film of claim 1 wherein the first monomer comprises at least two aromatic rings.

7 . The optical film of claim 6 wherein the first monomer is a bisphenol, fluorene or biphenyl (meth)acrylate monomer.

8 . The optical film of claim 1 wherein the polymerizable resin comprises up to 15 wt-% of one or more first monomers comprising at least two (meth)acrylate groups.

9 . The optical film of claim 1 wherein the first monomer comprising at least two (meth)acrylate groups has a molecular weight of at least 350 g/mole.

10 . The optical film of claim 1 wherein the polymerizable resin composition is non-halogenated.

11 . The optical film of claim 1 wherein the nanoparticles have a refractive index of at least 1.60.

12 . The optical film of claim 11 wherein the nanoparticles comprise zirconia.

13 . The optical film of claim 11 wherein the polymerizable resin comprises at least 40 wt-% nanoparticles.

14 . The optical film of claim 1 wherein the optical film is a brightness enhancing film.

15 . The optical film of claim 14 wherein the brightness enhancing film has a single sheet relative gain of at least 1.75.

16 . An optical film comprising a polymerized surface that comprises the reaction product of a polymerizable resin composition comprising

nanoparticles;

at least one first monomer comprising at least two (meth)acrylate groups; and

at least one second (meth)acrylate monomer having the structure

wherein at least one R1 comprises an aromatic substituent,

t is an integer from 1 to 4, and

R2 is hydrogen or methyl.

17 . A polymerizable resin composition comprising

nanoparticles;

at least one first monomer comprising at least two (meth)acrylate groups; and

at least one second (meth)acrylate monomer having the structure

wherein at least one R1 comprises an aromatic substituent,

t is an integer from 1 to 4, and

R2 is hydrogen or methyl.