公开(公告)号：US20230065457A1

公开(公告)日：2023-03-02

申请号：US17788392

申请日：2020-12-10

Applicant: KURARAY CO., LTD.

Inventor： Yasushi SENDA ,  Masahiro KATO

IPC: C08L67/00

Abstract: Provided is a thermoplastic elastomer composition and the like which can have improved vibration-damping properties while retaining properties inherent in a polyester-based thermoplastic elastomer. The thermoplastic elastomer composition contains a polyester-based thermoplastic elastomer (A) and a hydrogenated aromatic vinyl compound-based elastomer (B) having a glass transition temperature Tg of −10 to 40° C., wherein the hydrogenated aromatic vinyl compound-based elastomer (B) is a hydrogenate of a block copolymer containing a polymer block (a) having a structural unit derived from an aromatic vinyl compound and a polymer block (b) having a structural unit derived from a conjugated diene compound, and the ratio by mass of the polyester-based thermoplastic elastomer (A) to the hydrogenated aromatic vinyl compound-based elastomer (B), (A/B) is 99/1 to 1/99.

公开(公告)号：US20200283617A1

公开(公告)日：2020-09-10

申请号：US16763845

申请日：2018-11-21

Applicant: KURARAY CO., LTD.

Inventor： Yasushi SENDA ,  Masahiro KATO

IPC: C08L53/02 ,  C08F112/08 ,  C08F136/06 ,  C08F136/08 ,  C08F136/04 ,  C08F8/04 ,  C09J7/38

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.

公开(公告)号：US20240052084A1

公开(公告)日：2024-02-15

申请号：US18269094

申请日：2021-12-17

Applicant: KURARAY CO., LTD.

Inventor： Yasushi SENDA ,  Masahiro KATO

IPC: C08F297/04 ,  C08C19/02 ,  C08L23/12

CPC classification number: C08F297/046 ,  C08C19/02 ,  C08L23/12

Abstract: A hydrogenated product of a block copolymer containing a polymer block (A) that contains a structural unit derived from an aromatic vinyl compound and a polymer block (B) that contains a structural unit derived from a conjugated diene compound, which satisfies the following requirements: (1) The structural unit derived from a conjugated diene compound of the polymer block (B) has a structural unit derived from butadiene and a structural unit derived from a second conjugated diene compound which is a conjugated diene compound except butadiene. (2) The glass transition temperature is −57° C. or lower.

公开(公告)号：US20220325094A1

公开(公告)日：2022-10-13

申请号：US17447598

申请日：2021-09-14

Applicant: KURARAY CO., LTD.

Inventor： Yasushi SENDA

IPC: C08L53/02 ,  C08L23/12 ,  C08L91/00

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.

公开(公告)号：US20250059306A1

公开(公告)日：2025-02-20

申请号：US18719392

申请日：2022-12-15

Applicant: KURARAY CO., LTD.

Inventor： Masahiro KATO ,  Yasushi SENDA ,  Ryo SATANI

IPC: C08F8/46 ,  C08F8/04 ,  C08L23/06 ,  C08L23/12

Abstract: Provided is a modified product of a hydrogenated product of a block copolymer that can be added to obtain a resin composition having an excellent balance of mechanical properties such as tensile strength, tensile strain at break, and impact resistance. A modified hydrogenated product of a block copolymer including a polymer block containing a structural unit derived from an aromatic vinyl compound and a polymer block containing a structural unit derived from a conjugated diene compound, in which the conjugated diene compound contains isoprene and a conjugated diene compound other than isoprene; the polymer block has a vinyl bonding amount of 30 mol % or less; the modified hydrogenated product has one, or two 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 has a peak top intensity of loss tangent of 0.95 or less and a melt flow rate (MFR) of 0.5 g/10 min or more.

公开(公告)号：US20230265271A1

公开(公告)日：2023-08-24

申请号：US18018134

申请日：2021-07-29

Applicant: KURARAY CO., LTD.

Inventor： Takahiro SEKIGUCHI ,  Yasushi SENDA

IPC: C08L23/12

CPC classification number: C08L23/12 ,  C08L2205/03 ,  C08L2205/025 ,  C08L2207/062

Abstract: A polypropylene-based resin composition, a hydrogenated block copolymer contained in the polypropylene-based resin composition, a molded article containing the polypropylene-based resin composition, and an interior-exterior decorative material for automobiles, which includes the molded article. The polypropylene-based resin composition contains a polypropylene-based polymer (A), an ethylene-α-olefin copolymer rubber (B), and a hydrogenated block copolymer (C). In the polypropylene-based resin composition, the hydrogenated block copolymer (C) is a hydrogenated product of a block copolymer having at least one polymer block (C-1) mainly composed of an aromatic vinyl compound unit, and having at least one polymer block (C-2) mainly composed of a butadiene (Bd) unit and an isoprene (Ip) unit, a content of the aromatic vinyl compound units in the hydrogenated block copolymer is less than 30% by mass, and a vinyl bond amount of the polymer block (C-2) is 20% or less.

公开(公告)号：US20190284362A1

公开(公告)日：2019-09-19

申请号：US16301638

申请日：2017-05-17

Applicant: KURARAY CO., LTD.

Inventor： Yoshihiro MORISHITA ,  Masahiro KATO ,  Yasushi SENDA ,  Hiroyuki ARISHIMA ,  Jun KOISHIKAWA

IPC: C08J9/10 ,  C08J9/00 ,  C08L23/16 ,  C08L23/08 ,  C08L9/06 ,  C08L53/02 ,  B29D99/00

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 δ, 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., and has a peak top molecular weight determined in terms of standard polystyrene by gel permeation chromatography of 30,000 to 500,000; at least one olefin-based polymer (II) selected from the group consisting of an ethylene-propylene-diene copolymer rubber, an ethylene-vinyl acetate copolymer, and a polyethylene-based resin; a crosslinking agent (III); and a foaming agent (IV).

公开(公告)号：US20190218389A1

公开(公告)日：2019-07-18

申请号：US16301592

申请日：2017-05-17

Applicant: KURARAY CO., LTD.

Inventor： Yasushi SENDA ,  Shinya OSHITA

IPC: C08L53/02 ,  C08F236/04 ,  C08F236/08 ,  C08F236/10 ,  C08F8/04 ,  B32B17/10 ,  B32B27/30

CPC classification number: C08L53/025 ,  B32B17/10743 ,  B32B17/10761 ,  B32B27/30 ,  B32B27/302 ,  B32B2307/102 ,  C08F8/04 ,  C08F236/045 ,  C08F236/08 ,  C08F236/10 ,  C08F297/04 ,  C08F2800/10 ,  C08L53/02

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.

公开(公告)号：US20240209134A1

公开(公告)日：2024-06-27

申请号：US18288068

申请日：2022-04-22

Applicant: KURARAY CO., LTD.

Inventor： Yasushi SENDA

IPC: C08F297/04 ,  C08K5/00 ,  C08L53/02

CPC classification number: C08F297/04 ,  C08K5/0025 ,  C08L53/02 ,  C08L2203/14

Abstract: A resin composition containing: as a component (x), a hydrogenated product (X) of a block copolymer having a polymer block (A-1) derived from an aromatic vinyl compound and a polymer block (B-1) derived from a conjugated diene compound; and as a component (y), a block copolymer (YO) having a polymer block (A-2) derived from an aromatic vinyl compound and a polymer block (B-2) derived from a conjugated diene compound, or a hydrogenated product thereof (Y), satisfying the following requirements [1] to [4]: [1] the component (x) has a glass transition temperature of −40° ° C. or more, [2] the component (y) has a glass transition temperature of −50° C. or less, [3] the resin composition has a ratio Mx/My of a mass Mx of the component (x) with respect to a mass My of the component (y) of 1/99 to 99/1, and [4] the polymer block (B-2) contains a structural unit derived from β-farnesene.

公开(公告)号：US20220235217A1

公开(公告)日：2022-07-28

申请号：US17612039

申请日：2020-05-22

Applicant: KURARAY CO., LTD.

Inventor： Yasushi SENDA ,  Masahiro KATO

IPC: C08L53/02

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.