LOW REFRACTIVE INDEX FLUOROPOLYMER COMPOSITIONS HAVING IMPROVED COATING AND DURABILITY PROPERTIES
First Claim
1. An antireflection film comprising:
- a high refractive index layer; and
a low refractive index layer comprising the reaction product of a functional fluoropolymer phase reacted with a multifunctional acrylate phase to form a co-crosslinked interpenetrating polymer network, wherein the functional fluoropolymer consists essentially of at least two constituent monomers selected from of TFE, VDF, and HFP;
and the functional fluoropolymer has reactive functionality from a halogen containing cure site monomer, a small portion of unsaturations in the fluoropolymer backbone, or a combination thereof.
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Abstract
A low refractive index composition that forms a low refractive index layer on an optical display is formed having a co-crosslinked interpenetrating polymer network of a fluoropolymer phase and an acrylate phase. The fluoropolymer phase is preferably formed from fluoropolymers based on THV or FKM and having either a degree of unsaturation and/or containing a reactive cure site monomer in its polymer backbone. The acrylate phase includes a multifunctional acrylate crosslinker, and more preferably includes a perfluoropolyether acrylate crosslinker. The formed low refractive index layer has improved interfacial adhesion to other layers or substrates contained in the optical display. Further, the mechanical strength and scratch resistance of the either of above low refractive index compositions can be further enhanced through the incorporation of surface functionalized inorganic particle into the formed layer.
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Citations
16 Claims
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1. An antireflection film comprising:
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a high refractive index layer; and
a low refractive index layer comprising the reaction product of a functional fluoropolymer phase reacted with a multifunctional acrylate phase to form a co-crosslinked interpenetrating polymer network, wherein the functional fluoropolymer consists essentially of at least two constituent monomers selected from of TFE, VDF, and HFP;
and the functional fluoropolymer has reactive functionality from a halogen containing cure site monomer, a small portion of unsaturations in the fluoropolymer backbone, or a combination thereof. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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- 2. The antireflective film wherein the functional fluoropolymer has a small portion of unsaturations in the fluoropolymer backbone
Specification