13-08-2020 дата публикации
Номер: US20200255623A1
Принадлежит:
A photopolymerizable composition including: a polymer matrix or a precursor thereof containing a reaction product of an acrylate-based polyol and a compound containing at least one isocyanate group; a photoreactive monomer; and a non-reactive fluoro compound and a photoinitiator; a hologram recording medium produced from the composition; an optical element including the hologram recording medium; and a method of recording a hologram using the photopolymerizable composition. 1. A non-reactive fluoro compound represented by the following Chemical Formula 1 and 2:{'br': None, 'sup': 1', '3', '4', '5', '6', '2, 'sub': '1', 'R-A-(CRR—O—CRR)n—B—R\u2003\u2003[Chemical Formula 1]'}{'br': None, 'sup': 1', '3', '4', '5', '6', '3', '4', '5', '6', '2, 'sub': 2', '3, 'R—(CRR—O—CRR)n—X—(CRR—O—CRR)n—R\u2003\u2003[Chemical Formula 2]'}wherein, in Chemical Formula 1 and 2,{'sup': 1', '2, 'Rand Rare terminal blocking groups that are the same as or different from each other, and are each independently an alkyl ester group having 1 to 10 carbon atoms or an alkyl ether group having 1 to 10 carbon atoms, wherein the alkyl ester group and the alkyl ether group are substituted or unsubstituted with a halogen atom,'}A and B are a single bond or an alkylene group having 1 to 5 carbon atoms,{'sup': 3', '6', '3', '6, 'Rto Rare the same as or different from each other, and are each independently hydrogen, a halogen atom, or an alkyl group having 1 to 5 carbon atoms, and at least one of Rto Ris a fluorine atom,'}{'sub': 1', '3, 'each nto nis an integer of 1 to 5, and'}X is an alkylene group having 1 to 10 carbon atoms or an alkyl ether group having 1 to 10 carbon atoms.2. The non-reactive fluoro compound of claim 1 , wherein the non-reactive fluoro compound has a refractive index of less than 1.45.3. The non-reactive fluoro compound of claim 1 , wherein the non-reactive fluoro compound has a molecular weight of about 300 or more.4. The non-reactive fluoro compound of claim 1 , wherein more than ...
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