公开(公告)号：US20220069197A1

公开(公告)日：2022-03-03

申请号：US17297307

申请日：2019-11-27

Applicant: OSAKA ORGANIC CHEMICAL INDUSTRY LTD.

Inventor： Daisuke MANAI ,  Tomoya MIZUMORI ,  Masayuki KABATA

IPC: H01L41/193 ,  C08L27/16 ,  C08L33/16 ,  C08F20/24

Abstract: The present invention relates to a piezoelectric material, comprising: a vinylidene fluoride/trifluoroethylene copolymer; and a (meth)acrylic polymer which contains a structural unit derived from a (meth)acrylic monomer represented by Formula (I): [wherein, R1 represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, wherein at least one hydrogen atom of R1 is optionally substituted with a halogen atom; and R2 represents a linear or branched alkyl group having 1 to 10 carbon atoms, an alicyclic hydrocarbon group having 3 to 12 carbon atoms which contains an alicyclic structure having 3 to 6 carbon atoms, a phenyl group, or a phenylalkylene group which contains an alkylene group having 1 to 4 carbon atoms, wherein, at least one carbon atom of the alkyl group, the alicyclic hydrocarbon group, the phenyl group, and the phenylalkylene group is optionally substituted with —O—, —N—, or —S—, at least one hydrogen atom of the alkyl group, the alicyclic hydrocarbon group, and the alkylene group is optionally substituted with a hydroxy group, an alkyl group having 1 to 6 carbon atoms, and/or an alkoxy group having 1 to 6 carbon atoms, at least one hydrogen atom on the phenyl rings of the phenyl group and the phenylalkylene group is optionally substituted with a hydroxy group, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, and/or a cyano group, and at least one hydrogen atom of R2 is optionally substituted with a halogen atom, with a proviso that at least one hydrogen atom of R1 and/or R2 is substituted with a halogen atom.

公开(公告)号：US20210193905A1

公开(公告)日：2021-06-24

申请号：US17054511

申请日：2019-05-13

Applicant: THE SCHOOL CORPORATION KANSAI UNIVERSITY ,  OSAKA ORGANIC CHEMICAL INDUSTRY LTD.

Inventor： Daisuke MANAI ,  Tomoya MIZUMORI ,  Masayuki KABATA ,  Erina OKUBO ,  Yoshiro TAJITSU

IPC: H01L41/193 ,  C08F220/22 ,  C08F220/58 ,  C08J5/18

Abstract: A polymer for organic ferroelectric materials and an organic ferroelectric materials are disclosed. The polymer is a (meth)acrylic polymer, wherein the polymer comprises one or more (meth)acrylates as main monomer units and one or more (meth)acrylic monomers other than the main monomer units, wherein the main monomer units are (meth)acrylate monomer units having in the side chain thereof a saturated or unsaturated hydrocarbon skeleton linked to the distal end of the oxycarbonyl group, wherein the hydrocarbon skeleton has a hydrogen atom on the β-carbon atom relative to the oxycarbonyl group, and one or more electron withdrawing groups selected from halogen atom, cyano group, oxo group, and nitro group, that bind to the β-carbon atom and/or to one or more carbon atoms distal thereto, substituting for hydrogen atoms thereon, wherein the proportion of the main monomer units is less than 80 mol % of the total (meth)acrylic monomer units.