公开(公告)号：US20210122860A1

公开(公告)日：2021-04-29

申请号：US17133253

申请日：2020-12-23

Applicant: MITSUI CHEMICALS, INC.

Inventor： Koji ENDO ,  Mayumi HIWARA ,  Sadahiko MATSUURA ,  Yusuke MIZOBUCHI ,  Yuichi YAMAMURA ,  Yuji NOGUCHI ,  Yuji ISHII ,  Tatsuya SAKAI ,  Keisuke SHISHIDO ,  Kotaro ICHINO ,  Kiyohide INOMATA ,  Fumito TAKEUCHI ,  Kenta IDE

IPC: C08F210/18 ,  C08L23/20 ,  C09K3/10

Abstract: The purpose of the present invention is to obtain an ethylene⋅α-olefin⋅non-conjugated polyene copolymer that has a low permanent compression set at low temperatures, is flexible, and has an excellent balance of rubber elasticity at low temperatures and tensile strength at normal temperatures. This ethylene-based polymer is an ethylene⋅α-olefin⋅non-conjugated polyene copolymer that includes units derived from ethylene (A), units derived from an α-olefin (B) containing 4-20 carbon atoms, and units derived from a non-conjugated polyene (C) and satisfies (1)-(4). (1) The molar ratio of (A) to (B) is 40/60-90/10, (2) the contained amount of the units derived from (C) is 0.1-6.0 mol %, (3) ML(1+4)125° C. is 5-100, and (4) the B value is 1.20 or more.

公开(公告)号：US20180072877A1

公开(公告)日：2018-03-15

申请号：US15559366

申请日：2016-03-17

Applicant: MITSUI CHEMICALS, INC.

Inventor： Kotaro ICHINO ,  Tomohiro YAMAGUCHI ,  Yukio AITA ,  Yuji NOGUCHI

IPC: C08L23/08 ,  C08J3/24 ,  C08F210/16

CPC classification number: C08L23/083 ,  C08F210/16 ,  C08F2810/20 ,  C08J3/24 ,  C08J2323/08 ,  C08J2423/12 ,  C08J2461/06 ,  C08L23/00 ,  C08L23/08 ,  C08L61/06 ,  C08L2205/025 ,  C08L2205/03 ,  C08L2207/04 ,  C08L2312/04 ,  C08L23/10

Abstract: [Problem] The purpose of the invention is to provide: a thermoplastic elastomer composition capable of providing molded articles that are lightweight, have better oil resistance than those provided by conventional cross-linked thermoplastic elastomers, and have hardness and mechanical properties such as tensile strength and tensile elongation that are equal to or superior to those provided by conventional cross-linked thermoplastic elastomers; and an ethylene/α-olefin/unconjugated polyene copolymer having little compression set at low temperature as well as flexibility and an excellent balance of rubber elasticity at low temperature and tensile strength at normal temperature.[Solution] Produced are: a thermoplastic elastomer composition obtained by dynamically crosslinking a mixture containing a crystalline olefin polymer (A), an ethylene/α-olefin (having 4-20 carbon atoms)/unconjugated polyene copolymer (1B) that satisfies specific requirements, and a phenol resin-based crosslinking agent (C); and an ethylene-α-olefin/unconjugated polyene copolymer (2B) that satisfies specific requirements.

公开(公告)号：US20160347894A1

公开(公告)日：2016-12-01

申请号：US15116691

申请日：2015-02-10

Applicant: MITSUI CHEMICALS, INC.

Inventor： Koji ENDO ,  Mayumi HIWARA ,  Sadahiko MATSUURA ,  Yusuke MIZOBUCHI ,  Yuichi YAMAMURA ,  Yuji NOGUCHI ,  Yuji ISHII ,  Tatsuya SAKAI ,  Keisuke SHISHIDO ,  Kotaro ICHINO ,  Kiyohide INOMATA ,  Fumito TAKEUCHI ,  Kenta IDE

IPC: C08F210/18 ,  C08L23/20 ,  C09K3/10

CPC classification number: C08F210/18 ,  C08F4/65908 ,  C08F4/65912 ,  C08L23/20 ,  C09K3/1006 ,  C08F210/06 ,  C08F236/20 ,  C08F2500/25 ,  C08F2500/17 ,  C08F210/08 ,  C08F4/65927

Abstract: The purpose of the present invention is to obtain an ethylene•α-olefin•non-conjugated polyene copolymer that has a low permanent compression set at low temperatures, is flexible, and has an excellent balance of rubber elasticity at low temperatures and tensile strength at normal temperatures. This ethylene-based polymer is an ethylene•α-olefin•non-conjugated polyene copolymer that includes units derived from ethylene (A), units derived from an α-olefin (B) containing 4-20 carbon atoms, and units derived from a non-conjugated polyene (C) and satisfies (1)-(4). (1) The molar ratio of (A) to (B) is 40/60-90/10, (2) the contained amount of the units derived from (C) is 0.1-6.0 mol %, (3) ML(1+4)125° C. is 5-100, and (4) the B value is 1.20 or more.

Abstract translation: 本发明的目的是获得在低温下具有低永久压缩永久变形的乙烯·α-烯烃·非共轭多烯共聚物，是柔性的，并且在低温下具有优异的橡胶弹性平衡和拉伸强度 正常温度 该乙烯类聚合物是包含衍生自乙烯（A）的单元，源自含有4-20个碳原子的α-烯烃（B）的单元的单元的乙烯·α-烯烃·非共轭多烯共聚物， 非共轭多烯（C）并满足（1） - （4）。 （1）（A）与（B）的摩尔比为40/60〜90/10，（2）来自（C）的单元的含量为0.1〜6.0摩尔％，（3）ML +4）125℃为5-100，（4）B值为1.20以上。

公开(公告)号：US20210122861A1

公开(公告)日：2021-04-29

申请号：US17133280

申请日：2020-12-23

Applicant: MITSUI CHEMICALS, INC.

Inventor： Koji ENDO ,  Mayumi HIWARA ,  Sadahiko MATSUURA ,  Yusuke MIZOBUCHI ,  Yuichi YAMAMURA ,  Yuji NOGUCHI ,  Yuji ISHII ,  Tatsuya SAKAI ,  Keisuke SHISHIDO ,  Kotaro ICHINO ,  Kiyohide INOMATA ,  Fumito TAKEUCHI ,  Kenta IDE

IPC: C08F210/18 ,  C08L23/20 ,  C09K3/10

Abstract: The purpose of the present invention is to obtain an ethylene⋅α-olefin⋅non-conjugated polyene copolymer that has a low permanent compression set at low temperatures, is flexible, and has an excellent balance of rubber elasticity at low temperatures and tensile strength at normal temperatures. This ethylene-based polymer is an ethylene⋅α-olefin⋅non-conjugated polyene copolymer that includes units derived from ethylene (A), units derived from an α-olefin (B) containing 4-20 carbon atoms, and units derived from a non-conjugated polyene (C) and satisfies (1)-(4). (1) The molar ratio of (A) to (B) is 40/60-90/10, (2) the contained amount of the units derived from (C) is 0.1-6.0 mol %, (3) ML(1+4) 125° C. is 5-100, and (4) the B value is 1.20 or more.