Polymerizable composition and optically anisotropic body using same
A technology of polymerizable composition and polymerizable compound, applied in nonlinear optics, optics, optical elements, etc., can solve the problems of uneven brightness, difficulty and precipitation of the picture, and achieve excellent storage stability, less unevenness, Excellent productivity
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Embodiment 1
[0606] 50 parts of the compound represented by the formula (1-a-6), 25 parts of the compound represented by the formula (1-a-2), 25 parts of the compound represented by the formula (2-a-1) and n=6, And after adding 0.1 part of p-methoxyphenol (MEHQ) to 400 parts of methyl ethyl ketone (MEK), heat to 60°C, stir to dissolve, confirm the dissolution, return to room temperature, add IRGACURE 907 ( Irg907: BASF Japan Co., Ltd.) 3 parts and MEGAFACE F-554 (F-554: DIC Co., Ltd.) 0.2 parts were further stirred to obtain a solution. The solution is transparent and homogeneous. The obtained solution was filtered with a 0.20 μm membrane filter to obtain the polymerizable composition (1) of Example 1.
Embodiment 2～51、 comparative example 1～3
[0608] Except that each compound shown in the following table was changed to the ratio shown in the following table, under the same conditions as the adjustment of the polymerizable composition (1) of Example 1, Examples 2 to 1 were obtained. Polymerizable compositions (2) to (51) of 51 and polymerizable compositions (C1) to (C3) of Comparative Examples 1 to 3.
[0609] The specific compositions of polymerizable compositions (1) to (51) of Examples 1 to 51 of the present invention and polymerizable compositions (C1) to (C3) of Comparative Examples 1 to 3 are shown in Tables 1 to 6 below. . In addition, Table 7 shows the SP value, boiling point, and evaporation rate index of the organic solvents used in the polymerizable compositions (1) to (51) and comparative polymerizable compositions (C1) to (C3).
[0610] [Table 1]
[0611] polymeric composition
(1)
(2)
(3)
(4)
(5)
(6)
(7)
1-a-2
25
25
25
25
25
25
25
1-a-6
5...
Embodiment 51
[0665] After rubbing the unstretched cycloolefin polymer film "ZEONOR" (manufactured by Japan ZEON Co., Ltd.) with a thickness of 40 μm using a commercially available rubbing device, the polymerizable composition (1) of the present invention was coated by a bar coating method, Dry at 80°C for 2 minutes. The obtained coating film was cooled to room temperature, and then irradiated with ultraviolet rays at a conveyor speed of 6 m / min using a UV conveyor device (manufactured by GS Yuasa Co., Ltd.) to obtain an optically anisotropic body as a positive A plate of Example 51. Orientation evaluation, retardation ratio, and coating unevenness evaluation of the obtained optically anisotropic body were performed in accordance with the following criteria.
[0666] (orientation evaluation)
[0667] ⊚: There is no defect at all visually, and there is no defect at all when observed with a polarizing microscope.
[0668] ◯: There is no defect visually, but a non-oriented portion exists in ...
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Abstract
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