Liquid crystal sealant and liquid crystal display unit using liquid crystal sealant
A liquid crystal sealant, liquid crystal dropping method, applied in instruments, optics, other chemical processes, etc., can solve the problems of accelerated reaction speed, poor storage stability, low liquid crystal contamination, etc., and achieves high reliability and operation. Excellent properties and good storage stability
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[0083] Hereinafter, the present invention will be described in more detail through examples, but the present invention is not limited by the examples. In addition, unless otherwise specified, "parts" and "%" herein are mass standards.
Synthetic example 1
[0084] [Synthesis Example 1: Synthesis of the reaction product of glycidyl methacrylate and acrylic acid (compound No. 1 in Table 1 above)]
[0085] 298.2 g of glycidyl methacrylate (product name: BLEMMER GH, manufactured by NOF Corporation) and 0.9 g of dibutylhydroxytoluene as a polymerization inhibitor were dissolved in 450 g of toluene, and the temperature was raised to 60°C. Afterwards, 151.2 g of acrylic acid of 100% equivalent of the epoxy group was added, the temperature was raised to 80° C., 0.85 g of alkyltrimethylammonium chloride was added as a reaction catalyst, and stirred at 98° C. for about 30 hours to obtain a reaction liquid. This reaction liquid was washed with water, and toluene was distilled off to obtain 438 g of a reaction product of target glycidyl methacrylate and acrylic acid.
Synthetic example 2
[0086] [Synthesis Example 2: Synthesis of a reaction product of glycidyl methacrylate and acrylic acid and a reaction product of an isocyanate compound (a mixture of compound numbers 8 and 9 in Table 3 above)]
[0087] 200 g of the reaction product of glycidyl methacrylate and acrylic acid obtained in Synthesis Example 1 and 0.13 g of dibutylhydroxytoluene as a polymerization inhibitor were mixed. Next, while paying attention to the heat generation, 64.5 g of toluene diisocyanate (product name: CORONATE T-100, manufactured by Nippon Polyurethane Industry Co., Ltd.) was slowly added, and stirred at 80° C. for 7 hours to obtain a reaction solution. This reaction liquid was washed with water to obtain 186 g of a reaction product of a target reaction product of glycidyl methacrylate and an acrylic group, and an isocyanate compound.
[0088] [Reference Synthesis Example 1: Synthesis of Epoxy Acrylate of Bisphenol A Epoxy Resin]
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Abstract
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