- Novel method for synthesizing polyethoxy acrylate with fluorenyl structure by using immobilized catalyst
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The invention relates to the technical field of novel functional materials with high refractive index, and in particular, relates to a novel method for synthesizing polyethoxy acrylate with a fluorenyl structure by using an immobilized catalyst; the catalyst is easy to recover and can be repeatedly used for multiple times, the reaction operation is simple and convenient, the temperature controllability is strong, the yield is high, the production cost is reduced, the production efficiency is improved, environmental pollution is reduced, and green chemical production requirements are met. The method comprises the following steps: S1, sequentially adding a reaction solvent, a reaction main material, an immobilized catalyst and a polymerization inhibitor into a reactor, uniformly stirring and mixing, reacting, and cooling to obtain a first liquid; S2, adding acrylic acid into the first liquid, carrying out reflux reaction, carrying out water separation treatment, and cooling to obtain a second liquid; S3, filtering the second liquid to obtain a third liquid; S4, washing the third liquid with deionized water until the third liquid is neutral to obtain a fourth liquid; and S5, adding a drying agent into the fourth liquid for drying treatment, filtering and distilling the solvent to obtain a product.
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Paragraph 0030; 0033-0058
(2021/06/26)
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- High-refractive index acrylate polymers for applications in nanoimprint lithography
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The development of polymeric optical materials with a higher refractive index, transparency in the visible spectrum region and easier processability is increasingly desirable for advanced optical applications such as microlenses, image sensors, and organi
- Tang, Yunhui,Cabrini, Stefano,Nie, Jun,Pina-Hernandez, Carlos
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supporting information
p. 256 - 260
(2019/06/14)
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- (METH) ACRYLATE COMPOUND HAVING FLUORENE SKELETON
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PROBLEM TO BE SOLVED: To provide a bifunctional (meth) acrylate compound showing compatibility and a high refractive index to a monofunctional (meth) acrylate compound. SOLUTION: The present invention provides a (meth) acrylate compound represented by a f
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Paragraph 0087
(2019/08/01)
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- HIGH REFRACTIVE MONOMER, RESIN COMPOSITION FOR PRISM SHEET CONTAINING THE SAME AND PRISM SHEET USING THE SAME
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Disclosed are a high refractive monomer having at least one acryl functional group in a terminal and designed to meet a refractive index more than 1.57, a resin composition for forming the prism sheet capable of controlling refraction, viscosity, hardness, and yellowness by containing the high refractive monomer only or a mixture comprising the same, a prism sheet embodying high refraction and low viscosity of a liquid before curing and having excellent clarity and yellowing resistance by using the resin composition for forming the prism sheet which is made of the optimum mix. According to the present invention, the high luminance prism sheet is provided, thereby reducing the number of the sheet applied to embody the same luminance so as to contribute to slimming down the sheet, enhancing the performance, and saving costs. Therefore, the number of LED lamps used for a backlight unit can be reduced, thereby saving energy.
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- HIGH REFRACTIVE OLIGOMER, RESIN COMPOSITION FOR PRISM SHEET CONTAINING THE SAME AND PRISM SHEET USING THE SAME
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The present invention relates to a high refractive oligomer, a resin composition for molding a prism sheet containing the same, and a prism sheet using the same. The present invention provides a low viscosity and low yellowing type highly refractive oligomer, which comprises acryl functional groups on both terminus and contains at least two urethane functional groups in a molecular structure, and meets a refractive index higher than 1.61, and provides a prism sheet embodying a high refractive index and low viscosity of a liquid before curing and having excellent transparence and yellowing resistance, and meeting excellent adhesive strength and pencil hardness after curing through the resin composition for molding the prism sheet containing the highly refractive oligomer or an optimized mixing ratio between the highly refractive oligomer and highly refractive monomer. Accordingly, the prism sheet of the present invention contributes to slimming of the sheet, performance improvement, and reduction of manufacturing costs by reducing the number of the sheets applied to embody equal luminance, thereby reducing the number of LED lamps used for a backlight unit and saving energy.
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