Polymeric composition for epoxy acrylic optical material and preparation method of epoxy acrylic optical material
A polymerizable composition, epoxy acrylic technology, applied in the direction of optics, optical components, instruments, etc., can solve the problem of difficult to adjust the viscosity and reaction speed of the polymerizable composition, the refractive index, strength, transparency, optical properties, low processing, etc. It is difficult to carry out the optical material preparation process, etc., to achieve the effect of excellent optical properties, excellent handling, and high Abbe number.
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[0041] Hereinafter, the present invention will be described in more detail through specific examples. However, these examples are only for illustrating the present invention more specifically, and the scope of the present invention should not be limited to these examples.
[0042] Dibenzyl maleate preparation
Synthetic example 1
[0044] Put into the dimethyl maleate of 144g (1.0 mol) and the benzyl alcohol of 216g (2.0 mol) to the four-necked flask of 2L, add the dibutyltin oxide (dibutyltin oxide) of 0.2g as catalyst and stir after, when The temperature was raised when the internal temperature was 140°C (the temperature of the external heat medium was set at 160°C). About 1 hour after the internal temperature reached 140° C., methanol generation started, and after about 30 g of methanol was generated, the reaction rate slowed down. Thereafter, vacuum distillation was carried out using a vacuum pump to additionally recover about 21 g of methanol, and cooling was carried out to increase the degree of vacuum so that the temperature of the content became 105° C. or lower, and residual benzyl alcohol was recovered and concentrated into the total content. The content of benzyl alcohol is 1% or less. Thereafter, after cooling to 60° C. or lower and releasing the decompression, the product was analyzed by GC...
Embodiment 1
[0088] 35 g of styrene, 5 g of α-methylstyrene, 2g of methyl styrene dimer, 2g of tributylphosphite (TBP, tributylphosphite) and 8g of the dibenzyl maleate preparation in Synthesis Example 1, and stirred for about 30 minutes. After that, filter with a filter paper of 0.45 μm or less, add 0.05 g of V65, 0.13 g of 3-M as a catalyst, and mix 0.2 g of Zelec UN with an internal release agent TM , thereby preparing a resin composition for ophthalmic lenses. The thus-prepared resin composition for ophthalmic lenses was stirred for 1 hour, degassed under reduced pressure for 10 minutes, filtered, and then poured into a glass mold assembled with a polyester adhesive tape. Put the glass mold filled with the resin composition for spectacle lenses into a forced circulation oven, heat and solidify from 35°C to 110°C for 20 hours, then cool to 70°C, and assemble and disassemble the glass mold to obtain spectacle lenses. After the obtained lens was processed to a diameter of 72 mm, it was ...
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