Resin composition and optical compensation film using same
A technology of resin composition and optical compensation film, which is applied in the field of optical compensation film and can solve problems such as unsatisfactory phase difference characteristics
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Synthetic example 1
[0303] Synthesis Example 1 (Synthesis 1 of Cinnamate Copolymer (Monoethyl Fumarate / Ethyl 4-Methoxycinnamate Copolymer))
[0304] 12 g of monoethyl fumarate, 37 g of ethyl 4-methoxycinnamate, and 2,5-dimethyl-2,5-bis(2-ethyl Hexanoylperoxy)hexane (1.40 g) was melt-sealed under reduced pressure after nitrogen substitution and pressure release were repeated. Radical polymerization was carried out by placing this ampoule in a thermostat at 60° C. and maintaining it for 48 hours. After completion of the polymerization reaction, the polymer was taken out from the ampoule and dissolved in 50 g of tetrahydrofuran. This polymer solution was added dropwise to 2 kg of methanol / water=50 / 50 (% / weight %) to precipitate, washed with 2 kg of methanol / water=50 / 50 (% / weight %), and then By vacuum-drying at 80°C for 10 hours, 23 g of a monoethyl fumarate / ethyl 4-methoxycinnamate copolymer was obtained. The obtained polymer had a number average molecular weight of 31,000, a monoethyl fumarate ...
Synthetic example 2
[0305] Synthesis example 2 (Synthesis 2 of cinnamate ester copolymer (monoethyl fumarate / diisopropyl fumarate / 4-ethoxymethyl cinnamate copolymer))
[0306] 6.3 g of monoethyl fumarate, 15 g of diisopropyl fumarate, 29 g of methyl 4-ethoxycinnamate, and 2,5-dimethyl- 1.48 g of 2,5-bis(2-ethylhexanoylperoxy)hexane was weld-sealed under reduced pressure after nitrogen substitution and pressure release were repeated. Radical polymerization was carried out by placing this ampoule in a thermostat at 60° C. and maintaining it for 48 hours. After completion of the polymerization reaction, the polymer was taken out from the ampoule and dissolved in 50 g of tetrahydrofuran. This polymer solution was added dropwise to 2 kg of methanol / water=60 / 40 (wt% / wt%) to precipitate, and after washing with 2 kg of methanol / water=60 / 40 (wt% / wt%), Vacuum drying at 80° C. for 10 hours gave 31 g of monoethyl fumarate / diisopropyl fumarate / methyl 4-ethoxycinnamate copolymer. The obtained polymer had a ...
Synthetic example 3
[0307] Synthesis Example 3 (Synthesis 3 of Cinnamate Copolymer (Monoisopropyl Fumarate / Diethyl Fumarate / Isopropyl 4-Methoxycinnamate))
[0308] 4.3 g of monoisopropyl fumarate, 13 g of diethyl fumarate, 33 g of isopropyl 4-methoxycinnamate, and 2,5-dimethyl - 1.46 g of 2,5-bis(2-ethylhexanoylperoxy)hexane was weld-sealed under reduced pressure after nitrogen substitution and pressure release were repeated. Radical polymerization was carried out by placing this ampoule in a thermostat at 60° C. and maintaining it for 10 hours. After completion of the polymerization reaction, the polymer was taken out from the ampoule and dissolved in 50 g of tetrahydrofuran. This polymer solution was added dropwise to methanol / water=60 / 40 (wt% / wt%) to precipitate, and after washing with 2 kg of methanol / water=60 / 40 (wt% / wt%), at 80 29 g of monoisopropyl fumarate / diethyl fumarate / isopropyl 4-methoxycinnamate copolymer was obtained by vacuum drying at °C for 10 hours. The obtained polymer had ...
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