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US 7,742,672 B2Granted
Composition, optical device article, and associated method
AssigneeGeneral Electric Company
InventorThomas Bert Gorczyca
Life of this patent
Estimating the term…
Abstract
A base composition is provided. The base composition includes a binder, a reactive monomer, and an anti-haze additive. The binder may include an optically transmissive polymer. The reactive monomer may be both curable and volatile. The binder and the reactive monomer have differing refractive indices relative to each other. A cured layer formed from the base composition may be formed into an article have particular properties. A method of making the layer is provided.
Claims21
A base composition, comprising:
- a binder comprising an optically transmissive polymer;
- a curable and volatile reactive monomer mixed with the binder, wherein the binder and the reactive monomer have differing refractive indices;
- and
- an anti-haze additive comprising one or more of:
- a benzoic acid ester of an alkylene glycol or of a polyalkylene glycol;
- wherein the anti-haze additive is present throughout the base composition in an amount greater than 5 weight percent up to about 20 weight percent, based on the total combined weight of the binder and the reactive monomer.
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A method, comprising:
- mixing an anti-haze additive, a reactive monomer, and a thermoplastic binder to form a base composition at a ratio of reactive monomer to thermoplastic binder in a range of greater than about 25:75, wherein the anti-haze additive comprises one or more of:
- a benzoic acid ester of an alkylene glycol or of a polyalkylene glycol, and wherein the anti-haze additive is present throughout the base composition in an amount greater than 5 weight percent up to about 20 weight percent, based on the total combined weight of the binder and the reactive monomer;
- forming the base composition into a layer;
- irradiating a portion of the layer to react at least a portion of the reactive monomer in the irradiated layer portion;
- and
- volatilizing unreacted reactive monomer from the layer.
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Dependencies are inferred from the claim text.