Light management film and its preparation and use
View Patent ↗A light management film includes a first layer with a thermoplastic resin and a particular phosphonium sulfonate salt, and a second layer formed from a curable composition and having a refractive index of at least 1.5. The light management film exhibits reduced static electricity build-up and reduced dust attraction, making it easier to handle during fabrication of display devices such as the flat panel displays of laptop computers.
1. A light management film, comprising:
a first layer comprising
a thermoplastic resin selected from aromatic polycarbonates, polyetherimides, polyesters, polyphenylene ethers, polyphenylene ether/styrene polymer blends, polyamides, polyketones, acrylonitrile-butadiene-styrenes, and blends thereof, and
a phosphonium sulfonate salt having the structure
wherein each occurrence of X is independently halogen or hydrogen provided that at least one X is halogen; m, p, and q are integers from 0 to 12; n is 0 or 1 with the proviso that when n is 1, p and q are not both 0; R 1 -R 3 are each independently C 1 -C 12 hydrocarbyl; R 4 is C 1 -C 18 hydrocarbyl; and Y is selected from
wherein R 5 is hydrogen or C 1 -C 12 hydrocarbyl; and
a second layer disposed on a face of the first layer; wherein the second layer is the cured product of a curable composition; wherein the second layer has an index of refraction of at least 1.5; and wherein the curable composition comprises
a difunctional (meth)acrylate having the structure
wherein R 6 is hydrogen or methyl; X 1 is O, NH, or S; and R 8 has the structure
wherein Q is —C(CH 3 ) 2 —, —CH 2 —, —O—, —S—, —C(O)—, —S(O)—, or —S(O) 2 —; R 9 is hydroxy-substituted C 1 -C 6 alkylene; each occurrence of t is independently 0, 1, 2, 3, or 4; and d is 1 to 3;
an arylether (meth)acrylate having the structure
wherein R 6 is hydrogen or methyl; X 1 is O, NH, or S; X 2 is O, NH, or S; R 10 is substituted or unsubstituted divalent C 1 -C 12 alkylene or alkenylene; Ar is substituted or unsubstituted C 6 -C 12 aryl, including phenyl; wherein the substitution on the R 10 and Ar may independently include fluorine, chlorine, bromine, iodine, C 1 -C 6 alkyl, C 1 -C 3 perhalogenated alkyl, hydroxy, C 1 -C 6 ketone, C 1 -C 6 ester, N,N-di(C 1 -C 3 )alkylamide, or a combination comprising at least one of the foregoing substituents; and
a polymerization initiator.
2. The light management film of claim 1 , wherein the thermoplastic comprises an aromatic polycarbonate.
3. The light management film of claim 1 , wherein n, p, and q are zero, and m is 1 to 12.
4. The light management film of claim 1 , wherein the phosphonium sulfonate salt comprises tetra-n-butylphosphonium nonafluoro-n-butylsulfonate.
5. The light management film of claim 1 , wherein the curable composition further comprises metal oxide nanoparticles.
6. The light management film of claim 1 , further comprising a masking layer disposed on a surface of the first layer opposite the second layer.
7. The light management film of claim 1 , further comprising a masking layer disposed on a surface of the second layer opposite the first layer.
8. A flat panel display comprising the light management film of claim 1 .
9. A light management film, comprising:
a first layer comprising
a thermoplastic resin selected from aromatic polycarbonates, polyetherimides, polyesters, polyphenylene ethers, polyphenylene ether/styrene polymer blends, polyamides, polyketones, acrylonitrile-butadiene-styrenes, and blends thereof, and
a phosphonium sulfonate salt having the structure
wherein each occurrence of X is independently halogen or hydrogen provided that at least one X is halogen; m, p, and q are integers from 0 to 12; n is 0 or 1 with the proviso that when n is 1, p and q are not both 0; R 1 -R 3 are each independently C 1 -C 12 hydrocarbyl; R 4 is C 1 -C 18 hydrocarbyl; and Y is selected from
wherein R 5 is hydrogen or C 1 -C 12 hydrocarbyl; and
a second layer disposed on a face of the first layer; wherein the second layer is the cured product of a curable composition: wherein the second layer has an index of refraction of at least 1.5; and wherein the curable composition comprises
a difunctional (meth)acrylate having the structure
wherein R 6 is hydrogen or methyl; X 1 is O, NH, or S; and R 8 has the structure
wherein Q is —C(CH 3 ) 2 —, —CH 2 —, —O—, —S—, —C(O)—, —S(O)—, or —S(O) 2 —; R 9 is C 1 -C 6 alkylene or hydroxy-substituted C 1 -C 6 alkylene; each occurrence of t is independently 1, 2, 3, or 4; and d is 1 to 3;
an arylether (meth)acrylate having the structure
wherein R 6 is hydrogen or methyl; X 1 is O, NH, or S; X 2 is O, NH, or S; R 10 is substituted or unsubstituted divalent C 1 -C 12 alkylene or alkenylene; Ar is substituted or unsubstituted C 6 -C 12 aryl, including phenyl; wherein the substitution on the R 10 and Ar may independently include fluorine, chlorine, bromine, iodine, C 1 -C 6 alkyl, C 1 -C 3 perhalogenated alkyl, hydroxy, C 1 -C 6 ketone, C 1 -C 6 ester, N,N-di(C 1 -C 3 )alkylamide, or a combination comprising, at least one of the foregoing substituents; and
a polymerization initiator.
10. The light management film of claim 9 , wherein the thermoplastic comprises an aromatic polycarbonate.
11. The light management film of claim 9 , wherein n, p, and q are zero, and m is 1 to 12.
12. The light management film of claim 9 , wherein the phosphonium sulfonate salt comprises tetra-n-butylphosphonium nonafluoro-n-butylsulfonate.
13. The light management film of claim 9 , wherein the curable composition further comprises metal oxide nanoparticles.
14. The light management film of claim 9 , further comprising a masking layer disposed on a surface of the first layer opposite the second layer.
15. The light management film of claim 9 , further comprising a masking layer disposed on a surface of the second layer opposite the first layer.
16. A flat panel display comprising the light management film of claim 9 .
17. A light management film, comprising:
a first layer comprising
a thermoplastic resin selected from aromatic polycarbonates, polyetherimides, polyesters, polyphenylene ethers, polyphenylene ether/styrene polymer blends, polyamides, polyketones, acrylonitrile-butadiene-styrenes, and blends thereof, and
a phosphonium sulfonate salt having the structure
wherein each occurrence of X is independently halogen or hydrogen provided that at least one X is halogen; m, p, and q are integers from 0 to 12; n is 0 or 1 with the proviso that when n is 1, p and q are not both 0; R 1 -R 3 are each independently C 1 -C 12 hydrocarbyl; R 4 is C 1 -C 18 hydrocarbyl; and Y is selected from
wherein R 5 is hydrogen or C 1 -C 12 hydrocarbyl; and
a second layer disposed on a face of the first layer; wherein the second layer is the cured product of a curable composition; wherein the second layer has an index of refraction of at least 1.5; and wherein the curable composition comprises tetrabromobisphenol A diglycidyl ether diacrylate.
18. The light management film of claim 17 , wherein the thermoplastic comprises an aromatic polycarbonate.
19. The light management film of claim 17 , wherein n, p, and q are zero, and m is 1 to 12.
20. The light management film of claim 17 , wherein the phosphonium sulfonate salt comprises tetra-n-butylphosphonium nonafluoro-n-butylsulfonate.
21. The light management film of claim 17 , wherein the curable composition further comprises metal oxide nanoparticles.
22. The light management film of claim 17 , further comprising a masking layer disposed on a surface of the first layer opposite the second layer.
23. The light management film of claim 17 , further comprising a masking layer disposed on a surface of the second layer opposite the first layer.
24. A flat panel display comprising the light management film of claim 17 .
25. A light management film, comprising:
a first layer comprising
a thermoplastic resin selected from aromatic polycarbonates, polyetherimides, polyesters, polyphenylene ethers, polyphenylene ether/styrene polymer blends, polyamides, polyketones, acrylonitrile-butadiene-styrenes, and blends thereof, and
a phosphonium sulfonate salt having the structure
wherein each occurrence of X is independently halogen or hydrogen provided that at least one X is halogen; m, p, and q are integers from 0 to 12; n is 0 or 1 with the proviso that when n is 1, p and q are not both 0; R 1 -R 3 are each independently C 1 -C 12 hydrocarbyl; R 4 is C 1 -C 18 hydrocarbyl; and Y is selected from
wherein R 5 is hydrogen or C 1 -C 12 hydrocarbyl; and
a second layer disposed on a face of the first layer; wherein the second layer is the cured product of a curable composition; wherein the second layer has an index of refraction of at least 1.5; and wherein the curable composition comprises tetrabromobisphenol A diglycidyl ether diacrylate and phenylthioethyl acrylate.
26. The light management film of claim 25 , wherein the thermoplastic comprises an aromatic polycarbonate.
27. The light management film of claim 25 , wherein n, p, and q are zero, and m is 1 to 12.
28. The light management film of claim 25 , wherein the phosphonium sulfonate salt comprises tetra-n-butylphosphonium nonafluoro-n-butylsulfonate.
29. The light management film of claim 25 , wherein the curable composition further comprises metal oxide nanoparticles.
30. The light management film of claim 25 , further comprising a masking layer disposed on a surface of the first layer opposite the second layer.
31. The light management film of claim 25 , further comprising a masking layer disposed on a surface of the second layer opposite the first layer.
32. A flat panel display comprising the light management film of claim 25 .