Photochromic compound and curable composition containing said photochromic compound
A photochromic and compound technology, applied in the direction of color-changing fluorescent materials, chemical instruments and methods, optics, etc., can solve the problems of dependence and difficulty in balancing, and achieve excellent color concentration and fading speed, and excellent photochromic properties Effect
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Embodiment 1
[0469] Synthesis of Cyclodextrin Conjugated Photochromic Compound (CyD1)
[0470] This CyD1 is a compound in which cyclodextrin is used as a compound forming a polyvalent residue.
[0471] first process
[0472] By the following formula (11)
[0473] [chemical 14]
[0474]
[0475] 4.7 g (10 mmol) of the compound represented, synthesized according to the method described in the International Publication No. 2006 / 022825 pamphlet, is obtained by the following formula (12)
[0476] [chemical 15]
[0477]
[0478] 100 mL of toluene was added to 5.3 g (15 mmol) of the indicated compound and 0.25 (1 mmol) of pyridinium p-toluenesulfonate, and heated and stirred at 75° C. for 1 hour. After cooling to room temperature, it was washed with 100 mL of water three times, and the organic layer was distilled off under reduced pressure. The residue obtained is purified by silica gel column chromatography, and obtained by the following formula (13):
[0479] [chemical 16]
[0480]...
Embodiment 2
[0515] Preparation of curable composition (Y1 (hereinafter sometimes abbreviated as (Y1))) and production and evaluation of photochromic cured product
[0516] (Preparation of curable composition)
[0517] According to the following formulation, each component was fully mixed, and the photochromic curable composition (Y1) was prepared.
[0518] formula;
[0519] (A) Photochromic compound
[0520] CyD1 (manufactured in Example 1): 69.3 mg (photochromic pigment: 9.6 μmol).
[0521] (B) Polymeric compound
[0522] (B1-1-1-4) norbornene methane diisocyanate: 4.58 g.
[0523] (B3-2) Pentaerythritol tetrakis(3-mercaptopropionate): 5.42 g.
[0524] (C) Polymerization curing accelerator
[0525] (C3-1) Dimethyl tin dichloride: 10 mg.
[0526] (Production and evaluation of photochromic cured product)
[0527] Using the above curable composition (Y1), a photochromic cured body was obtained by a kneading method.
[0528] Furthermore, the polymerizable compound (B) used in the ab...
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