Photosensitive resin composition for color filter and color filter using same
A color filter, photosensitive resin technology, applied in the field of color filters, can solve the problems of sensitivity, developability and close contact performance deterioration, reduced sensitivity, developability and close contact performance and other problems
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preparation Embodiment 1
[0147] Put 462g of bisphenol fluorene epoxy resin (231g / eq epoxy equivalent), 900mg of triethylbenzyl ammonium chloride, 200mg of 2,6-diisobutylbenzene, and 144g of acrylic acid into a 1000ml four-necked flask and heat to 90 to 100°C, while injecting air into it at a rate of 25ml / min. The slightly opaque solution was slowly heated to 120°C to completely dissolve it. Next, the acid value of the solution was measured, and then, heating and stirring were continued until the acid value reached less than 2.0 mgKOH / g. It took 8 hours to bring the acid value to 0.8 mgKOH / g. Then, the solution was cooled to room temperature to obtain a transparent and colorless solid bisphenol fluorene epoxy acrylate. Next, propylene glycol monomethyl ether acetate was added to 152 g of bisphenol fluorene epoxy acrylate and dissolved therein, and 19 g of 1,2,3,6-tetrahydro anhydrous phthalic acid, 36.8 g of biphenyltetracarboxylic dianhydride and 0.5 g of tetraethylammonium bromide were mixed toget...
preparation Embodiment 2
[0155] A cardo-based resin represented by the following Chemical Formula 19 was prepared according to the same method as in Preparation Example 1, except that benzophenone tetracarboxylic dianhydride was used instead of biphenyl tetracarboxylic dianhydride in Preparation Example 1.
[0156] [chemical formula 19]
[0157]
[0158] In chemical formula 19, X 5 and x 6 is independently a linking group represented by the following chemical formula 2, Y 2 is a benzophenone group, Z 5 and Z 6 is independently a linking group represented by the following chemical formula 18, n 2 >0 and m 2 >0.
[0159] The cardo-based resin represented by Chemical Formula 19 had a weight average molecular weight of 4,700 g / mol and a solid acid value of 95 mgKOH / g.
[0160] (Preparation of photopolymerization initiator)
preparation Embodiment 3
[0162] 5 g (25.61 mmol) of ethylcarbazole and 4.32 g (26.89 mmol) of 2-thiopheneacetyl chloride were dissolved in 30 ml of dichloromethane. Cool the solution to 2 °C in an ice bath, then, stir and add 3.41 g (25.61 mmol) of AlCl 3 . The resulting mixture was further stirred at room temperature for 3 hours. Add 4.58g (26.89mmol) of p-methoxybenzoic acid chloride to 20ml of dichloromethane solution, add 4.1g (30.73mmol) of AlCl 3 , and then further stirred for 1 hour and 30 minutes. The resulting reaction solution was cooled in 200 ml of ice, 200 ml of dichloromethane was added thereto, and then, the organic layer was separated therefrom. The obtained organic layer was dried with magnesium sulfate to evaporate the solvent therein to obtain 10 g of a white solid.
[0163] The white solid was mixed with 1.4g (3.59mmol) diketone, 0.261g (3.76mmol) NH 2 OH·HCl and 0.32 g (3.9 mmol) of sodium acetate were mixed in 15 ml of isopropanol, and the mixture was refluxed for 3 hours. ...
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