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公开(公告)号：US10818843B2
公开(公告)日：2020-10-27
申请号：US14915313
申请日：2014-08-29
Applicant: Sumitomo Chemical Company, Limited
Inventor： Hidenobu Kakimoto , Nozomi Masui , Tomoya Nakatani , Noriyuki Hida , Yasutaka Yatsumonji
Abstract: A polymer compound comprising a constitutional unit represented by the following formula (1) and a constitutional unit represented by the following formula (X) and/or a constitutional unit represented by the following formula (Y), wherein the content of the hydroxyl groups contained in the polymer compound is less than 0.02 mol %: Ar1 (1) [wherein, Ar1 represents an arylene group and this group optionally has a substituent.] [wherein, aX1 and aX2 each independently represent an integer of 0 or more. ArX1 and ArX3 each independently represent an arylene group or a divalent heterocyclic group and these groups each optionally have a substituent. ArX2 and ArX4 each independently represent an arylene group, a divalent heterocyclic group or a divalent group in which at least one arylene group and at least one divalent heterocyclic group are bonded directly to each other, and these groups each optionally have a substituent. When there are a plurality of ArX2 and a plurality of ArX4, each of them may be the same or different. RX1, RX2 and RX3 each independently represent an alkyl group, an aryl group or a monovalent heterocyclic group and these groups each optionally have a substituent. When there are a plurality of RX2 and a plurality of RX3, each of them may be the same or different.] ArY1 (Y) [wherein, ArY1 represents an arylene group, a divalent heterocyclic group or a divalent group in which at least one arylene group and at least one divalent heterocyclic group are bonded directly to each other, and these groups each optionally have a substituent.].
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公开(公告)号：US11926779B2
公开(公告)日：2024-03-12
申请号：US18181297
申请日：2023-03-09
Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
Inventor： Shinji Ohtomo , Shohei Azami , Monami Tosa , Nozomi Masui
CPC classification number: C09K19/3809 , C09K19/52 , C09K2219/03 , C09K2219/11
Abstract: A liquid crystal polyester comprising a repeating unit (A1) represented by the formula (A1) and a repeating unit (A2) represented by the formula (A2). A molar ratio (phenolic hydroxyl groups derived from the repeating unit (A2)/phenolic hydroxyl groups derived from the repeating unit (A1)) is 1 or lower, as calculated by 1H-NMR. A ratio [repeating unit (A2)/repeating unit (A1)] is 1.2 or larger. The number of the repeating unit (A1) is 20% or more and the number of the repeating unit (A2) is 58% or more based on 100% of a total number of all repeating units of the liquid crystal polyester. A flow starting temperature of the liquid crystal polyester is 250° C. or more.
—O—Ar11—CO— (A1)
—O—Ar12—CO— (A2)
Ar11 represents a phenylene group and Ar12 represents a naphthylene group. A hydrogen atom is optionally substituted.-
公开(公告)号：US12077705B2
公开(公告)日：2024-09-03
申请号：US18181288
申请日：2023-03-09
Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
Inventor： Shinji Ohtomo , Shohei Azami , Monami Tosa , Nozomi Masui
IPC: C09K19/38
CPC classification number: C09K19/3809 , C09K2219/03 , C09K2219/13
Abstract: A liquid crystal polyester comprising a repeating unit derived from an aromatic hydroxycarboxylic acid. The content of the repeating unit derived from an aromatic hydroxycarboxylic acid is 80% or more based on 100% of a total number of all repeating units of the liquid crystal polyester. The repeating unit derived from an aromatic hydroxycarboxylic acid comprises a repeating unit (A1) represented by the formula (A1) and a repeating unit (A2) represented by the formula (A2). A ratio [repeating unit (A2)/repeating unit (A1)] is 1.2 or larger. A molar ratio [phenolic hydroxyl groups/(the phenolic hydroxyl groups+acyl groups)] is 0.3 or lower, as calculated by 1H-NMR.
—O—Ar11—CO— (A1)
—O—Ar12—CO— (A1)
Ar11 represents a phenylene group and Ar12 represents a naphthylene group. A hydrogen atom is optionally substituted.-
公开(公告)号：US11274206B2
公开(公告)日：2022-03-15
申请号：US16478713
申请日：2018-01-15
Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
Inventor： Koji Miyamoto , Nozomi Masui , Hiroko Sugiyama , Katsunori Mochizuki , Junichi Ikeuchi
Abstract: An object of the present invention is to provide a polyamideimide resin for an optical member having both high flexibility and bending resistance, and in particular, a polyamideimide resin for a front plate of an image display apparatus, and an optical member such as a front plate containing the polyamideimide resin.
A polyamideimide resin having constitutional units represented by formula (1) and formula (2): in formula (1) and formula (2), X and Z each independently represent a divalent organic group, Y represents a tetravalent organic group, and at least a part of Z is constitutional unit represented by formula (3): in formula (3), R1 to R8 each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms or an aryl group having 6 to 12 carbon atoms, and the hydrogen atoms contained in R1 to R8 may be each independently substituted with a halogen atom, A represents —O—, —S—, —CO— or —NR9—, and R9 represents a hydrocarbon group having 1 to 12 carbon atoms which may be substituted with a halogen atom, m is an integer of 1 to 4, and * represents a bonding hand.
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