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    Polyvinyl acetal composition
    1.
    发明授权
    Polyvinyl acetal composition 有权

    公开(公告)号：US10323143B2

    公开(公告)日：2019-06-18

    申请号：US14779220

    申请日：2014-03-13

    申请人： KURARAY CO., LTD.

    发明人： Yoshiaki Asanuma ,  Koichiro Isoue

    IPC分类号： C08L29/14 ,  C08K5/103 ,  C08L67/00 ,  C08L71/02 ,  B32B17/10

    摘要： An object is to provide a polyvinyl acetal composition which includes polyvinyl acetals having different average amounts of remaining hydroxyl groups and from which a sheet having excellent transparency can be molded.A polyvinyl acetal composition comprising 3 to 100 parts by mass of polyvinyl acetal (B) with respect to 100 parts by mass of polyvinyl acetal (A), and 0.05 to 0.75 times by mass of compound (C) with respect to the total mass of polyvinyl acetal (A) and polyvinyl acetal (B). The polyvinyl acetal (A) has an average amount of remaining hydroxyl groups of X mol % (X is a positive number), the polyvinyl acetal (B) has an average amount of remaining hydroxyl groups of Y mol % (Y is a positive number), and |X−Y|≥3 is satisfied. The compound (C) is selected from a group consisting of a polyester containing a hydroxyl group, a polyalkylene oxide, and an ester compound containing a hydroxyl group, the ester compound containing a hydroxyl group being an ester compound of one molecule of an m-valent alcohol (m represents an integer of 1 to 3) and n molecules (n represents an integer of 1 to m) of a monovalent carboxylic acid.

    Resin composition, pellet, veil, damping material, sound insulation material, and intermediate film for laminated glass
    3.
    发明授权
    Resin composition, pellet, veil, damping material, sound insulation material, and intermediate film for laminated glass 有权

    公开(公告)号：US10913843B2

    公开(公告)日：2021-02-09

    申请号：US16336369

    申请日：2017-09-26

    申请人： KURARAY CO., LTD.

    发明人： Yasushi Senda ,  Shinya Oshita ,  Yoshiaki Asanuma

    IPC分类号： C08L53/02 ,  B32B17/10 ,  C08F297/04 ,  G10K11/162

    摘要： Provided are a resin composition, a pellet, a veil, a vibration damping material, a sound insulator, and an intermediate film for laminated glass, each of which is much more excellent in damping properties. Specifically, the resin composition is a resin composition containing the following block copolymer or hydrogenation product thereof (X); and a tackifier resin (Y) having a glass transition temperature of −50 to 45° C., wherein when a glass transition temperature of a polymer block (B) of the block copolymer or hydrogenation product thereof (X) is designated as Tg(X), and a glass transition temperature of the tackifier resin (Y) is designated as Tg(Y), an absolute value of a difference between Tg(X) and Tg(Y) is 50° C. or lower, the block copolymer or hydrogenation product thereof (X) being a block copolymer or a hydrogenation product thereof having a polymer block (A) containing more than 70 mol % of a structural unit derived from an aromatic vinyl compound and a polymer block (B) containing 30 mol % or more of a structural unit derived from at least one selected from the group consisting of a conjugated diene compound and isobutylene, and the content of the polymer block (A) in the block copolymer being 25% by mass or less.

    Composition having excellent transparency
    4.
    发明授权
    Composition having excellent transparency 有权

    公开(公告)号：US10519295B2

    公开(公告)日：2019-12-31

    申请号：US14779256

    申请日：2013-03-22

    申请人： KURARAY CO., LTD.

    发明人： Yoshiaki Asanuma

    IPC分类号： C08L29/14 ,  C08K5/10 ,  C08K5/06 ,  C08L71/02 ,  B32B17/06 ,  B32B27/06 ,  B32B27/30 ,  C08L29/04 ,  B32B17/10

    摘要： To provide a laminated product of a layer including a polyvinyl acetal and a layer including a hydrocarbon-based polymer, having excellent adhesion between the layers.A composition including, with respect to 100 parts by mass of a polyvinyl acetal satisfying definition 1 and/or definition 2, 30 to 70 parts by mass of a plasticizer including 0.5 to 100% by mass of a plasticizer containing a polar group and 0 to 99.5% of a plasticizer containing no polar group.Definition 1: When 1 g of a polyvinyl acetal is dissolved in 100 g of methanol, an undissolved content is 2.5 to 90% by mass.Definition 2: When 1 g of a polyvinyl acetal is dissolved in 100 g of chloroform, an undissolved content is 5 to 70% by mass.

    Laminate
    5.
    发明授权
    Laminate 有权

    公开(公告)号：US10029448B2

    公开(公告)日：2018-07-24

    申请号：US14892915

    申请日：2013-05-22

    申请人： KURARAY CO., LTD.

    发明人： Yoshiaki Asanuma

    IPC分类号： B32B27/08 ,  B32B27/30 ,  B32B27/22 ,  B32B7/00 ,  B32B7/02 ,  B32B7/04 ,  B32B7/10 ,  B32B27/00 ,  B32B27/06 ,  B32B27/18 ,  B32B27/28 ,  B32B27/36 ,  B32B17/10

    摘要： A laminate contains a layer A and a layer B. The layer A includes a polyvinyl acetal (A), a plasticizer (Ap), and a dispersant (Ad). The layer B includes a polyvinyl acetal (B) and a plasticizer (Bp) and optionally a dispersant (Bd). A mass ratio of (Ad) to (Ap) is larger than a mass ratio of (Bd) to (Bp). The plasticizer (Ap) and the plasticizer (Bp) are an ester compound of an m-valent alcohol with m molecules of a monovalent carboxylic acid having 8 to 16 carbon atoms, where m is a number of 2 to 4; and an ester compound of an n-valent alcohol with n molecules of a monovalent carboxylic acid having 8 to 16 carbon atoms, where n is a number of 2 to 4, respectively. The dispersant (Ad) and the dispersant (Bd) are obtained by hydrolyzing the plasticizer (Ap) and the plasticizer (Bp), respectively.

    Polyvinyl acetal resin film and film roll thereof, and laminate comprising same
    6.
    发明授权
    Polyvinyl acetal resin film and film roll thereof, and laminate comprising same 有权

    公开(公告)号：US11623985B2

    公开(公告)日：2023-04-11

    申请号：US17279427

    申请日：2019-09-25

    申请人： KURARAY CO., LTD.

    发明人： Yoshiaki Asanuma ,  Koichiro Isoue

    IPC分类号： B32B3/26 ,  C08L29/14 ,  B32B17/10 ,  B29C48/00 ,  C08J5/18 ,  B32B3/30 ,  B29K29/00

    摘要： The present invention relates to a polyvinyl acetal resin film, comprising a polyvinyl acetal resin material, wherein the polyvinyl acetal resin film has a thickness of 5 to 350 μm, and satisfies the following Formulae (1) and (2) where, comparing one surface and the other surface, a mean value of the 10-point average roughness of a rougher surface A and a mean value of the 10-point average roughness of a smoother surface B are defined as Rz1(a) μm and Rz2(a) μm, respectively: Rz1(a)>1.1×Rz2(a)  (1) 3>Rz2(a)  (2), a value obtained by dividing the standard deviation of the 10-point average roughness of the surface A by Rz1(a) and a value obtained by dividing the standard deviation of the 10-point average roughness of the surface B by Rz2(a) are each 0 to 0.30, a viscosity of a toluene/ethanol (1:1, mass ratio) solution containing 10%-by-mass of a polyvinyl acetal resin contained in the polyvinyl acetal resin material, which is measured at 20° C. and 30 rpm using a Brookfield-type (B-type) viscometer, is 100 to 1,000 mPa·s, and the amount of a plasticizer in the polyvinyl acetal resin film is 0 to 20% by mass based on a total mass of the polyvinyl acetal resin film.

    Interlayer film for laminated glass
    7.
    发明授权
    Interlayer film for laminated glass 有权

    公开(公告)号：US11325354B2

    公开(公告)日：2022-05-10

    申请号：US16089055

    申请日：2017-03-24

    申请人： KURARAY CO., LTD.

    发明人： Yoshiaki Asanuma ,  Takeshi Kusudou

    IPC分类号： B32B17/10 ,  B32B27/30 ,  C08F116/38 ,  C08J5/18 ,  C08K5/01 ,  C08K5/03 ,  C08K5/05 ,  C08K5/053 ,  C08K5/12 ,  B32B7/02

    摘要： Provided is an interlayer film for laminated glass which is excellent in sound insulation property and has improved sound insulation performance not only in a coincidence region but also in a mass-dominated region. The interlayer film for laminated glass includes a sound insulating layer which is formed from a composition (A) containing at least one resin (a1) selected from a thermoplastic resin and a thermosetting resin, wherein a tan δ obtained when a dynamic viscoelasticity of a sheet, which is obtained by molding the composition (A) to have a thickness of 0.8 mm, is measured at a frequency of 0.3 Hz in a tension mode has a maximal value at a temperature TA (° C.), TA (° C.) is in a range of −50 to 50° C., and the tan δ at TA (° C.) is 2.5 or more.

    Polyvinyl acetal composition
    8.
    发明授权
    Polyvinyl acetal composition 有权

    公开(公告)号：US10392495B2

    公开(公告)日：2019-08-27

    申请号：US14779179

    申请日：2013-03-22

    申请人： KURARAY CO., LTD.

    发明人： Yoshiaki Asanuma ,  Yoko Nakano

    IPC分类号： C08K5/103 ,  C08J5/18 ,  C08L71/02 ,  B32B17/10 ,  C08L29/14

    摘要： A composition including 100 parts by mass of a polyvinyl acetal and 30 to 70 parts by mass of a plasticizer including 0.5 to 100% by mass of a plasticizer containing a polar group and 0 to 99.5% by mass of a plasticizer containing no polar group, a total of the plasticizer containing a polar group and the plasticizer containing no polar group being 100% by mass. When the polyvinyl acetal is analyzed by HPLC using an ODS column having an inner diameter of 4 mm and a length of 1 cm, the polyvinyl acetal exhibits a first peak and a second peak derived from polyvinyl acetals. In addition, a laminated product of a layer including a polyvinyl acetal and a layer including a hydrocarbon-based polymer.