公开(公告)号：US20210324130A1

公开(公告)日：2021-10-21

申请号：US17059023

申请日：2019-05-22

Applicant: KURARAY CO., LTD.

Inventor： Masahiro KATO ,  Yasushi SENDA ,  Yoshihiro AOKI ,  Nobuhiro OYA ,  Hideaki SUZUKI

IPC: C08F297/04 ,  C08F8/04 ,  C08L53/02

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 δ 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./min, is 1.0 or more.

公开(公告)号：US20230272205A1

公开(公告)日：2023-08-31

申请号：US18195061

申请日：2023-05-09

Applicant: KURARAY CO., LTD.

Inventor： Masahiro KATO ,  Yasushi SENDA ,  Ryo SATANI

IPC: C08L51/00 ,  C09J151/00

CPC classification number: C08L51/003 ,  C09J151/003

Abstract: The present invention relates to a resin composition containing a modified hydrogenated product (A) of a block copolymer containing a polymer block (A-1) having a structural unit derived from an aromatic vinyl compound and a polymer block (A-2) having a structural unit derived from a conjugated diene compound, and a polyolefin resin (B), wherein the modified hydrogenated product (A) 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 a group derived from an acid anhydride, and the polymer block (A-2) has a vinyl bond amount of 50 to 99 mol %; and the resin composition further containing a polar resin (C).

公开(公告)号：US20210292542A1

公开(公告)日：2021-09-23

申请号：US17320276

申请日：2021-05-14

Applicant: KURARAY CO., LTD.

Inventor： Yasushi SENDA ,  Shinya OSHITA

IPC: C08L53/02 ,  B32B17/10 ,  B32B27/30 ,  C08F297/04 ,  C08F8/04 ,  C08F236/04 ,  C08F236/08 ,  C08F236/10

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：US20210214486A1

公开(公告)日：2021-07-15

申请号：US17058940

申请日：2019-05-30

Applicant: KURARAY CO., LTD.

Inventor： Yasushi SENDA ,  Masahiro KATO ,  Mikio MASUDA

IPC: C08F297/04 ,  C09J153/02 ,  C08L55/02 ,  C08L53/02 ,  A43B13/04 ,  B32B27/30 ,  G10K11/168

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 δ 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 δ 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.

公开(公告)号：US20200024441A1

公开(公告)日：2020-01-23

申请号：US16336369

申请日：2017-09-26

Applicant: KURARAY CO., LTD.

Inventor： Yasushi SENDA ,  Shinya OSHITA ,  Yoshiaki ASANUMA

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

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. 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.