Fluoropolymer coating compositions with multifunctional fluoroalkyl crosslinkers for anti-reflective polymer films
First Claim
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1. A low refractive index composition for use in an antireflection coating for an optical display, the composition comprising the reaction product of:
- a fluoropolymer selected from the group consisting of a Br-containing fluoroelastomer, an I-containing fluoroelastomer, a CN-containing fluoroelastomers, and mixtures thereof, wherein the fluoropolymer is formed from TFE, HFP, VDF, and at least one halogen-containing cure site monomer, halogen-containing chain transfer agent, or CN-containing cure site monomer; and
a fluoroalkyl-containing perfluoropolyether multi-acrylate crosslinker; and
a plurality of surface modified inorganic nanoparticles.
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Abstract
An economic, optically transmissive, stain and ink repellent, durable low refractive index fluoropolymer composition for use in an antireflection film or coupled to an optical display. In one aspect of the invention, the composition is formed from the reaction product of a fluoropolymer and a fluoroalkyl containing multi-olefinic crosslinker. In another aspect of the invention, the composition further includes surface modified inorganic nanoparticles.
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19 Claims
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1. A low refractive index composition for use in an antireflection coating for an optical display, the composition comprising the reaction product of:
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a fluoropolymer selected from the group consisting of a Br-containing fluoroelastomer, an I-containing fluoroelastomer, a CN-containing fluoroelastomers, and mixtures thereof, wherein the fluoropolymer is formed from TFE, HFP, VDF, and at least one halogen-containing cure site monomer, halogen-containing chain transfer agent, or CN-containing cure site monomer; and a fluoroalkyl-containing perfluoropolyether multi-acrylate crosslinker; and a plurality of surface modified inorganic nanoparticles. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 17, 18, 19)
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13. A low refractive index composition for use in an antireflection coating for an optical display, the composition comprising the reaction product of:
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i) a fluoropolymer selected from the group consisting of a Br-containing fluoroelastomer, an I-containing fluoroelastomer, a CN-containing fluoroelastomers, and mixtures thereof, wherein the fluoropolymer is formed from TFE, HFP, VDF, and at least one halogen-containing cure site monomer, halogen-containing chain transfer agent, or CN-containing cure site monomer; ii) a fluoroalkyl-containing multi-olefinic crosslinker; and iii) a plurality of surface modified nanoparticles.
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14. A method for forming an optically transmissive, stain and ink repellent, durable optical display comprising:
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providing an optical display having an optical substrate; forming a low refractive index polymer composition comprising a fluoropolymer selected from the group consisting of a Br-containing fluoroelastomer, an I-containing fluoroelastomer, a CN-containing fluoroelastomers, and mixtures thereof, wherein the fluoropolymer is formed from TFE, HFP, VDF, and at least one halogen-containing cure site monomer, halogen-containing chain transfer agent, or CN-containing cure site monomer; a fluoroalkyl-containing perfluoropolyether multi-acrylate crosslinker; and a plurality of surface modified nanoparticles; applying a layer of said low refractive index polymer composition to said optical substrate; and curing said layer to form a cured film. - View Dependent Claims (15, 16)
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Specification