Patents by Inventor Yasushi SENDA

Yasushi SENDA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11492438
    Abstract: A block copolymer including a polymer block (A) containing more than 70 mol % of a unit derived from an aromatic vinyl compound, and a polymer block (B) containing 30 mol % or more of a unit derived from a conjugated diene compound is provided. The block copolymer satisfies the conditions: (1): a content of the polymer block (A) in the block copolymer is 1 to 70% by mass; (2): a maximum width of a series of temperature regions where tan ? measured in accordance with JIS K7244-10 (2005), under conditions including a strain amount of 0.1%, a frequency of 1 a measurement temperature of ?70 to 100° C., and a temperature rise rate of 3° C./min, is 1.0 or more is less than 16° C.; (3): a temperature at a peak position of tan ? in the condition (2) is 0° C. to +50° C.; and (4): a mobility parameter M indicating a mobility of the polymer block (B) is 0.01 to 0.25 sec.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: November 8, 2022
    Assignee: KURARAY CO., LTD.
    Inventors: Yasushi Senda, Masahiro Kato, Mikio Masuda
  • Publication number: 20220325094
    Abstract: A resin composition including a component (x) that is a hydrogenate (X) of a block copolymer having a polymer block (A-1) containing a structural unit derived from an aromatic vinyl compound and a polymer block (B-1) containing a structural unit derived from a conjugated diene compound; and a component (y) that is a block copolymer (Y0) having a polymer block (A-2) containing a structural unit derived from an aromatic vinyl compound and a polymer block (B-2) containing a structural unit derived from a conjugated diene compound, or a hydrogenate (Y) thereof, wherein the resin composition satisfies the following requirements [1] to [3]; [1] a glass transition temperature of the component (x) is ?10° C. or higher; [2] a glass transition temperature of the component (y) is lower than ?10° C.; and [3] a ratio Mx/My of a mass Mx of the component (x) to a mass My of the component (y) in the resin composition is 1/99 to 99/1.
    Type: Application
    Filed: September 14, 2021
    Publication date: October 13, 2022
    Applicant: KURARAY CO., LTD.
    Inventor: Yasushi SENDA
  • Publication number: 20220235217
    Abstract: A resin composition or the like may exhibit high vibration damping properties even at a relatively high temperature, have good moldability, and have excellent impact resistance. The resin composition contains a thermoplastic resin (A), a thermoplastic resin (B), and a polar resin (C), wherein the resin composition satisfies (1) to (3): (1) the thermoplastic resin (B) has at least one of a reactive functional group and a monomer unit containing a hetero atom; (2) the thermoplastic resin (A) and the thermoplastic resin (B) are different types of resins; (3) with respect to the total mass of the resin composition, the content of the thermoplastic resin (A) is 1 to 30% by mass, the content of the thermoplastic resin (B) is 1 to 30% by mass, and the content of the polar resin (C) is 40 to 98% by mass.
    Type: Application
    Filed: May 22, 2020
    Publication date: July 28, 2022
    Applicant: KURARAY CO., LTD.
    Inventors: Yasushi SENDA, Masahiro KATO
  • Patent number: 11384192
    Abstract: The present invention relates to a modified hydrogenated product of a block copolymer having a polymer block (A) containing a structural unit derived from an aromatic vinyl compound, and a polymer block (B) containing a structural unit derived from a conjugated diene compound, a method of producing the modified hydrogenated product, and a resin composition containing the modified hydrogenated product. The modified hydrogenated product has one or more functional groups selected from an alkoxysilyl group, a carboxy group, an amino group, a hydroxy group, an epoxy group, and an acid anhydride-derived group, and satisfies the following conditions. Condition (1): after stay at 330° C. for 30 min under nitrogen atmosphere, a weight change rate is ?5.5% or more. Condition (2): the peak top intensity of tan ? measured in accordance with JIS K7244-10 (2005), under conditions including a strain amount of 0.1%, a frequency of 1 Hz, a measurement temperature of ?70 to 120° C., and a temperature rise rate of 3° C.
    Type: Grant
    Filed: May 22, 2019
    Date of Patent: July 12, 2022
    Assignee: KURARAY CO., LTD.
    Inventors: Masahiro Kato, Yasushi Senda, Yoshihiro Aoki, Nobuhiro Oya, Hideaki Suzuki
  • Publication number: 20210324130
    Abstract: The present invention relates to a modified hydrogenated product of a block copolymer having a polymer block (A) containing a structural unit derived from an aromatic vinyl compound, and a polymer block (B) containing a structural unit derived from a conjugated diene compound, a method of producing the modified hydrogenated product, and a resin composition containing the modified hydrogenated product. The modified hydrogenated product has one or more functional groups selected from an alkoxysilyl group, a carboxy group, an amino group, a hydroxy group, an epoxy group, and an acid anhydride-derived group, and satisfies the following conditions. Condition (1): after stay at 330° C. for 30 min under nitrogen atmosphere, a weight change rate is ?5.5% or more. Condition (2): the peak top intensity of tan ? measured in accordance with JIS K7244-10 (2005), under conditions including a strain amount of 0.1%, a frequency of 1 Hz, a measurement temperature of ?70 to 120° C., and a temperature rise rate of 3° C.
    Type: Application
    Filed: May 22, 2019
    Publication date: October 21, 2021
    Applicant: KURARAYCO., LTD.
    Inventors: Masahiro KATO, Yasushi SENDA, Yoshihiro AOKI, Nobuhiro OYA, Hideaki SUZUKI
  • Publication number: 20210292542
    Abstract: Provided is a hydrogenated block copolymer, which is a hydrogenation product of a block copolymer including 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, the hydrogenated block copolymer being satisfied with the following requirements (1) and (2): Requirement (1): the content of the polymer block (A) in the block copolymer is 1 to 30% by mass; and Requirement (2): when the polymer block (B) is regarded as having a structure with a hydrogenation rate of 100 mol %, an average value of a methylene chain length of a main chain of the structural unit derived from at least one selected from the group consisting of a conjugated diene compound and isobutylene is 1.0 to 6.0.
    Type: Application
    Filed: May 14, 2021
    Publication date: September 23, 2021
    Applicant: KURARAY CO., LTD.
    Inventors: Yasushi SENDA, Shinya OSHITA
  • Patent number: 11072702
    Abstract: Provided is a hydrogenated block copolymer, which is a hydrogenation product of a block copolymer including 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, the hydrogenated block copolymer being satisfied with the following requirements (1) and (2): Requirement (1): the content of the polymer block (A) in the block copolymer is 1 to 30% by mass; and Requirement (2): when the polymer block (B) is regarded as having a structure with a hydrogenation rate of 100 mol %, an average value of a methylene chain length of a main chain of the structural unit derived from at least one selected from the group consisting of a conjugated diene compound and isobutylene is 1.0 to 6.0.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: July 27, 2021
    Assignee: KURARAY CO., LTD.
    Inventors: Yasushi Senda, Shinya Oshita
  • Publication number: 20210214486
    Abstract: The present invention relates to a block copolymer including 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 a conjugated diene compound, the block copolymer further satisfying following conditions. Condition (1): A content of the polymer block (A) in the block copolymer is 1 to 70% by mass. Condition (2): A maximum width of a series of temperature regions where tan ? measured in accordance with JIS K7244-10 (2005), under conditions including a strain amount of 0.1%, a frequency of 1 Hz, a measurement temperature of ?70 to 100° C., and a temperature rise rate of 3° C./min, is 1.0 or more is less than 16° C. Condition (3): A temperature at a peak position of tan ? in the condition (2) is 0° C. to +50° C. Condition (4): A mobility parameter M indicating a mobility of the polymer block (B) is 0.01 to 0.25 sec.
    Type: Application
    Filed: May 30, 2019
    Publication date: July 15, 2021
    Applicant: KURARAY CO., LTD.
    Inventors: Yasushi SENDA, Masahiro KATO, Mikio MASUDA
  • Patent number: 10927211
    Abstract: A block copolymer hydrogenate, which is a hydrogenate of a block copolymer having a polymer block (A) containing a structural unit derived from an aromatic vinyl compound in an amount of more than 70 mol %, and a polymer block (B) containing a structural unit derived from a conjugated diene compound in an amount of 30 mol % or more, and further satisfies the following requirements: Requirement (1): The content of the polymer block (A) in the block copolymer hydrogenate is 1 to 30% by mass. Requirement (2): The conjugated diene compound contains isoprene. Requirement (3): A total content of the 1,2-bond unit and the 3,4-bond unit in the structural units derived from the conjugated diene compound is 60 mol % or more. Requirement (4): The hydrogenation rate of the polymer block (B) is 60 mol % or more. Requirement (5): The block copolymer hydrogenate has a serial temperature range where tan ?, as measured according to JIS K7244-10 (2005) and under the conditions of a strain of 0.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: February 23, 2021
    Assignee: KURARAY CO., LTD.
    Inventors: Mikio Masuda, Yasushi Senda, Masahiro Kato
  • Patent number: 10913843
    Abstract: 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.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: February 9, 2021
    Assignee: KURARAY CO., LTD.
    Inventors: Yasushi Senda, Shinya Oshita, Yoshiaki Asanuma
  • Publication number: 20200362084
    Abstract: A block copolymer hydrogenate, which is a hydrogenate of a block copolymer having a polymer block (A) containing a structural unit derived from an aromatic vinyl compound in an amount of more than 70 mol %, and a polymer block (B) containing a structural unit derived from a conjugated diene compound in an amount of 30 mol % or more, and further satisfies the following requirements: Requirement (1): The content of the polymer block (A) in the block copolymer hydrogenate is 1 to 30% by mass. Requirement (2): The conjugated diene compound contains isoprene. Requirement (3): A total content of the 1,2-bond unit and the 3,4-bond unit in the structural units derived from the conjugated diene compound is 60 mol % or more. Requirement (4): The hydrogenation rate of the polymer block (B) is 60 mol % or more. Requirement (5): The block copolymer hydrogenate has a serial temperature range where tan ?, as measured according to JIS K7244-10(2005) and under the conditions of a strain of 0.
    Type: Application
    Filed: November 21, 2018
    Publication date: November 19, 2020
    Applicant: KURARAY CO., LTD.
    Inventors: Mikio MASUDA, Yasushi SENDA, Masahiro KATO
  • Patent number: 10815352
    Abstract: Provided are a foam molded body capable of improving damping properties and sound insulation properties of a panel and realizing weight reduction of a panel, a dam rubber, a complex of a dam rubber and a panel, and a method for increasing a sound transmission loss. The present invention is concerned with a foam molded body of a resin composition containing a block copolymer (I) which is a block copolymer having a polymer block (A) composed mainly of a structural unit derived from an aromatic vinyl compound and other polymer block (B), exhibits a peak top temperature of tan ?, as measured under a condition of a thickness of a test piece of 1 mm, a strain amount of 0.1%, a frequency of 1 Hz, a measurement temperature of ?70 to 70° C., and a temperature rise rate of 3° C./min in conformity with JIS K7244-10 (2005), of ?50 to 50° C.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: October 27, 2020
    Assignee: KURARAY CO., LTD.
    Inventors: Yoshihiro Morishita, Masahiro Kato, Yasushi Senda, Hiroyuki Arishima, Jun Koishikawa
  • Publication number: 20200303958
    Abstract: A wireless power-feeding apparatus that enables efficient wireless feeding to a power-receiving coil embedded at the center of a spherical power-receiving device. The apparatus includes: a holding member for holding the power-receiving device; a power-transmitting coil; a driver circuit for supplying the power-transmitting coil with high-frequency current to generate a magnetic flux for wireless power-feeding to the power-receiving coil; and a wireless data receiver for receiving data transmitted regularly from a wireless data transmitter, the power-transmitting coil being positioned relative to the holding member in such a manner that the axes of the power-receiving coil and the power-transmitting coil are parallel to each other when the power-receiving device is held by the holding member in such a manner that a mark provided on the surface of the power-receiving device faces a predetermined direction.
    Type: Application
    Filed: January 29, 2019
    Publication date: September 24, 2020
    Applicants: MAXELL HOLDINGS, LTD., MIZUNO CORPORATION, AICHI STEEL CORPORATION, SUNWISE CO., LTD.
    Inventors: Keiichi TANII, Takeshi NARUO, Shohei SHIBATA, Masaki MORI, Michiharu YAMAMOTO, Yasushi SENDA
  • Publication number: 20200283617
    Abstract: A block copolymer or a hydrogenate thereof, containing a polymer block (A) and a polymer block (B), in which the polymer block (B) has a structural unit derived from a conjugated diene compound, the structural unit including one or more kinds of alicyclic skeletons (X) represented by a formula (X) in the main chain.
    Type: Application
    Filed: November 21, 2018
    Publication date: September 10, 2020
    Applicant: KURARAY CO., LTD.
    Inventors: Yasushi SENDA, Masahiro KATO
  • Publication number: 20200024441
    Abstract: 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.
    Type: Application
    Filed: September 26, 2017
    Publication date: January 23, 2020
    Applicant: KURARAY CO., LTD.
    Inventors: Yasushi SENDA, Shinya OSHITA, Yoshiaki ASANUMA
  • Publication number: 20190284362
    Abstract: Provided are a foam molded body capable of improving damping properties and sound insulation properties of a panel and realizing weight reduction of a panel, a dam rubber, a complex of a dam rubber and a panel, and a method for increasing a sound transmission loss. The present invention is concerned with a foam molded body of a resin composition containing a block copolymer (I) which is a block copolymer having a polymer block (A) composed mainly of a structural unit derived from an aromatic vinyl compound and other polymer block (B), exhibits a peak top temperature of tan ?, as measured under a condition of a thickness of a test piece of 1 mm, a strain amount of 0.1%, a frequency of 1 Hz, a measurement temperature of ?70 to 70° C., and a temperature rise rate of 3° C./min in conformity with JIS K7244-10 (2005), of ?50 to 50° C.
    Type: Application
    Filed: May 17, 2017
    Publication date: September 19, 2019
    Applicant: KURARAY CO., LTD.
    Inventors: Yoshihiro MORISHITA, Masahiro KATO, Yasushi SENDA, Hiroyuki ARISHIMA, Jun KOISHIKAWA
  • Publication number: 20190218389
    Abstract: Provided is a hydrogenated block copolymer, which is a hydrogenation product of a block copolymer including 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, the hydrogenated block copolymer being satisfied with the following requirements (1) and (2): Requirement (1): the content of the polymer block (A) in the block copolymer is 1 to 30% by mass; and Requirement (2): when the polymer block (B) is regarded as having a structure with a hydrogenation rate of 100 mol %, an average value of a methylene chain length of a main chain of the structural unit derived from at least one selected from the group consisting of a conjugated diene compound and isobutylene is 1.0 to 6.0.
    Type: Application
    Filed: May 17, 2017
    Publication date: July 18, 2019
    Applicant: Kuraray Co., Ltd.
    Inventors: Yasushi SENDA, Shinya OSHITA