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1.发明公开
公开(公告)号：EP3761106A1
公开(公告)日：2021-01-06
申请号：EP19761176.7
申请日：2019-03-01
摘要： The purpose of the present invention is to provide: a novel polymer which has an electro-optical effect; a method for producing such a polymer; and a light control element which uses such a polymer. The present invention relates to a non-crosslinkable polycarbonate which contains a moiety that has electro-optical characteristics. The present invention also relates to a method for producing a polycarbonate, which comprises a step for reacting a bisphenol compound, a diol compound that has electro-optical characteristics, and a phosgene in the presence of an acid binding agent and solvent. The present invention also relates to a light control element which comprises such polycarbonate.
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公开(公告)号：EP4389779A1
公开(公告)日：2024-06-26
申请号：EP22858243.3
申请日：2022-07-21
发明人： OTOMO, Akira , TANAKA, Kouichi , YAMADA, Toshiki , YAMADA, Chiyumi , KAMADA, Shun , UEDA, Rieko
摘要： Provided is a polymer capable of being suitably used for an optical control element useful in shorter wavelength bands than the C band. A polymer represented by the formula (1).
[In the formula (1), RA1 and RA2 are each independently an alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 12 carbon atoms, or an alkyl aryl group having 7 to 15 carbon atoms, hydrogen atoms contained in the alkyl group, the aryl group, and the alkyl aryl group are optionally substituted with halogen atoms, and RA1 and RA2 are optionally linked to each other to form a 3- to 12-membered saturated alicyclic structure together with a carbon atom to which they are bonded. X represents a phenylene group, an ethylene group, or a phenylenevinylene group, RD1 represents an alkanediyl group having 1 to 10 carbon atoms, RD2 represents an alkyl group having 1 to 10 carbon atoms, and any carbon atoms contained in RD1 and RD2 are optionally linked to each other to form a 3- to 12-membered saturated heterocyclic structure together with a nitrogen atom to which RD1 and RD2 are bonded. Y represents a linking group. Po represents a polymer structure].-
公开(公告)号：EP3480224A1
公开(公告)日：2019-05-08
申请号：EP17820196.8
申请日：2017-06-28
发明人： OTOMO, Akira , AOKI, Isao , YAMADA, Toshiki
IPC分类号： C08F220/36 , C07D409/06 , C07D495/04 , C08F20/10 , C08F265/00 , G02F1/061
摘要： An object of the present invention is to provide a novel electro-optic polymer. Another object of the present invention is to provide a novel electro-optic polymer with a low alicyclic methacrylate monomer content. The polymer according to the present invention is a polymer comprising (a) a base polymer having a reactive group (A), (b) an electro-optic molecule having a plurality of reactive groups (B), and a bond (C) formed by reaction of the reactive group (A) with the plurality of reactive groups (B), the bond (C) being at least one type of bond selected from the group consisting of a (thio) ester bond, a (thio) urethane bond, a (thio) urea bond and a (thio)amide bond.
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公开(公告)号：EP4224135A1
公开(公告)日：2023-08-09
申请号：EP21874970.3
申请日：2021-08-20
发明人： OTOMO, Akira , TANAKA, Kouichi , YAMADA, Toshiki , YAMADA, Chiyumi , KAMADA, Shun , UEDA, Rieko
摘要： An optical control element has an optical waveguide formed using an electro-optic material. A determination method includes selecting the following formula (I) and/or formula (II) as a formula for calculating a figure of merit of an EO material at a wavelength λ based on a required characteristic of the optical control element, calculating a figure of merit FOM1 and/or a figure of merit FOM2 using a formula selected in the selecting, and determining a wavelength band suitable for use of the optical control element based on a figure of merit of the EO material calculated in the calculating. FOM 1 = n 3 r λ 2 FOM 2 = n 3 r αλ 2 [In the formulae, n is a refractive index of the electro-optic material, r is an electro-optic coefficient of the electro-optic material, α is a propagation loss per unit length in a phase modulation region in the optical waveguide, and λ is a wavelength].
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