公开(公告)号：US12122861B2

公开(公告)日：2024-10-22

申请号：US17607147

申请日：2020-04-21

Applicant: BRIDGESTONE CORPORATION

Inventor： Yasuhiro Shoda ,  Shun Tanemura

IPC: C08F210/02 ,  B60C1/00

CPC classification number: C08F210/02 ,  B60C1/00

Abstract: An object of the present disclosure is to provide a polymer exhibiting reduced heat generation in a low strain region. To achieve the object, the present disclosure provides a multi-component copolymer, comprising a non-conjugated olefin unit, a conjugated diene unit, and an aromatic vinyl unit, characterized in that: a ratio [(C100-120/C0-1000)×100] of crystallinity (C100-120) derived from the non-conjugated olefin unit at 100-120° C. with respect to crystallinity (C0-100) derived from the non-conjugated olefin unit at 0-100° C., as measured by a differential scanning calorimeter (DSC), is 23% or less.

公开(公告)号：US12110303B2

公开(公告)日：2024-10-08

申请号：US17046115

申请日：2019-04-10

Applicant: SYNTHOS S.A. ,  SYNTHOS DWORY 7 SPOLKA Z OGRANICZONA ODPOWIEDZIALNOSCIA SPOLKA JAWNA

Inventor： Maria Siolek-Komorek ,  Tomasz Skrok ,  Jaroslaw Rogoza ,  Radoslaw Kozak ,  Pawel Weda ,  Malgorzata Pierog

IPC: C07F7/10 ,  B60C1/00 ,  B60C11/00 ,  C08F212/14 ,  C08F236/06 ,  C08F236/10 ,  C08L9/06

CPC classification number: C07F7/10 ,  B60C1/0016 ,  B60C11/0008 ,  C08F236/10 ,  C08L9/06 ,  B60C1/00 ,  B60C2011/0025 ,  C08F212/14 ,  C08F212/26 ,  C08F212/28 ,  C08F236/06

Abstract: The present invention relates to mixtures of specific styrene derivatives and their use in the production of an elastomeric copolymer. The styrene derivatives are of the following formula.

公开(公告)号：US12098232B2

公开(公告)日：2024-09-24

申请号：US17423989

申请日：2020-09-25

Applicant: LG Chem, Ltd.

Inventor： Suk Youn Kang ,  Ju Ryang Bae ,  Seo Won Choi ,  Tae Chul Lee

IPC: C08F236/06 ,  C08C19/22 ,  C08C19/25 ,  C08F4/54 ,  C08K3/04 ,  C08K3/36 ,  C08L15/00 ,  B60C1/00

CPC classification number: C08F4/545 ,  C08C19/22 ,  C08C19/25 ,  C08F236/06 ,  C08K3/04 ,  C08K3/36 ,  C08L15/00 ,  B60C1/00

Abstract: A neodymium-catalyzed modified conjugated diene-based polymer having excellent affinity with a filler is provided. A method for preparing the same and a rubber composition including the same are also provided. The neodymium-catalyzed modified conjugated diene-based polymer includes a repeating unit derived from a conjugated diene-based monomer; and a functional group derived from a modifier represented by Formula 1 in at least one terminal of a polymer.

公开(公告)号：US20240286436A1

公开(公告)日：2024-08-29

申请号：US18572841

申请日：2022-06-24

Applicant: Bridgestone Americas Tire Operations, LLC

Inventor： Claude David Rollins ,  Seth Martin Miller

IPC: B60C1/00 ,  B60C19/00 ,  C08K3/04 ,  C08K3/36 ,  C08L7/00 ,  C08L9/00 ,  C08L9/06

CPC classification number: B60C1/00 ,  B60C19/00 ,  C08L7/00 ,  C08L9/00 ,  C08L9/06 ,  C08K3/04 ,  C08K3/36

Abstract: Disclosed herein is a tire having an electronic communication module including a radio device where the radio device is positioned between a first rubber layer and a second rubber layer, with the second rubber layer having a T50 cure time at 160° C. that is than the T50 cure time of the first rubber layer. Also disclosed are related methods for curing a tire with an electronic communication module including a radio device positioned between a first rubber layer and a second rubber layer, with the second rubber layer having a T50 cure time at 160° C. that is than the T50 cure time of the first rubber layer.

公开(公告)号：US12024482B2

公开(公告)日：2024-07-02

申请号：US17226951

申请日：2021-04-09

Applicant: Sennics Co., Ltd.

Inventor： Yang Gao ,  Hui Li

IPC: C07C211/55 ,  B60C1/00 ,  C08L21/00

CPC classification number: C07C211/55 ,  B60C1/00 ,  C08L21/00 ,  C08L2201/08

Abstract: Antidegradant composition comprising a first compound of Formula I:




and a second antidegradant that is not the compound of Formula I; and rubber composition comprising the antidegradant composition. The rubber composition has good resistance to appearance discoloration while maintaining the mechanical and anti-aging properties, thus, are suitable for making the entire tire or as part of the rubber matrix.

公开(公告)号：US20240209190A1

公开(公告)日：2024-06-27

申请号：US18288718

申请日：2022-04-19

Applicant: ZS ELASTOMERS CO., LTD. ,  SUMITOMO CHEMICAL COMPANY, LIMITED ,  ZEON CORPORATION

Inventor： Yoshitaka SUGINO ,  Keita OHNO ,  Hisakatsu HAMA ,  Satoru MORITOMI ,  Yosuke MIYAZAKI

IPC: C08L9/06 ,  B60C1/00 ,  C08F212/08 ,  C08F236/10 ,  C08L25/10

CPC classification number: C08L9/06 ,  B60C1/00 ,  C08F212/08 ,  C08F236/10 ,  C08L25/10 ,  C08F2810/20

Abstract: A conjugated diene polymer contains at least conjugated diene monomer units, wherein the conjugated diene polymer has an ionic strength index of 25% or more and a molecular weight distribution curve where two or more peaks are present when measured by gel permeation chromatography, wherein when among the peaks in the molecular weight distribution curve, a peak having the largest peak area proportion is defined as a first peak, and a peak having the second largest peak area proportion is defined as a second peak, the conjugated diene polymer has an entire molecular weight distribution (Mw/Mn) of 1.50 or more, the first peak has a molecular weight distribution (Mw/Mn) of 1.30 or less, and the second peak has a molecular weight distribution (Mw/Mn) of 1.30 or less.

公开(公告)号：US11999193B2

公开(公告)日：2024-06-04

申请号：US17936989

申请日：2022-09-30

Applicant: Pirelli Tyre S.p.A.

Inventor： Davide Dall'abaco ,  Virna Formaggio ,  Luigia Rossiello ,  Thomas Hanel

IPC: B60C1/00 ,  B60C13/00 ,  C08K5/06 ,  C08K5/13 ,  C08K5/15 ,  C08L9/00

CPC classification number: B60C1/0025 ,  B60C1/00 ,  B60C13/001 ,  C08K5/06 ,  C08K5/13 ,  C08K5/15 ,  C08L9/00 ,  C08L2201/08 ,  C08L2205/03

Abstract: The present invention relates to a tyre for vehicle wheels comprising at least one external structural element comprising at least one external structural element comprising a crosslinked elastomeric material obtained by crosslinking a crosslinkable elastomeric composition comprising (i) at least one diene elastomeric polymer, and (ii) a system for protection against ozone substantially free of polymeric static protective agents which essentially consists of at least one phenolic antioxidant in an amount substantially equal to or higher than 3 phr.

公开(公告)号：US20240150555A1

公开(公告)日：2024-05-09

申请号：US18278099

申请日：2022-02-21

Applicant: Asahi Kasei Kabushiki Kaisha

Inventor： Atsushi Bamba ,  Kazufumi Kawahara ,  Ryosuke Ozawa

IPC: C08L1/02 ,  B60C1/00 ,  C08J3/12 ,  C08K7/02 ,  C08L9/08 ,  C08L71/02

CPC classification number: C08L1/02 ,  B60C1/00 ,  C08J3/122 ,  C08K7/02 ,  C08L9/08 ,  C08L71/02 ,  C08J2309/08 ,  C08J2371/02 ,  C08K2201/011 ,  C08L2203/30

Abstract: Provided are: a rubber composite in which cellulose nanofibers are well-dispersed in rubber and which has favorable characteristics (in particular, storage modulus, etc.) that make it possible to form a vulcanized rubber product having an excellent elastic modulus, excellent wear resistance, etc.; and a cellulose nanofiber-containing composition from which said rubber composite can be formed. Provided is a composition containing cellulose nanofibers and a nonionic surfactant, wherein the nonionic surfactant has, as a hydrophobic moiety, a group that has 6-30 carbon atoms and is an aliphatic or aromatic or a combination thereof.

公开(公告)号：US11976190B2

公开(公告)日：2024-05-07

申请号：US17040829

申请日：2019-03-28

Applicant: KURARAY CO., LTD. ,  AMYRIS, INC.

Inventor： Daisuke Koda

IPC: B60C1/00 ,  C08F212/08 ,  C08F236/06 ,  C08F236/22 ,  C08F297/04 ,  C08K3/04 ,  C08K3/36 ,  C08K5/5419 ,  C08L53/02

CPC classification number: C08L53/02 ,  B60C1/00 ,  C08F212/08 ,  C08F236/06 ,  C08F236/22 ,  C08K3/04 ,  C08K3/36 ,  C08K5/5419 ,  C08F2438/00

Abstract: The present invention relates to a block copolymer that contains a polymer block A containing a farnesene-derived monomer unit (a1) and a random copolymer block B containing a C12 or lower conjugated diene-derived monomer unit (b1) and an aromatic vinyl compound-derived monomer unit (b2), the block copolymer having a ratio by mass of the polymer block A to the random copolymer block B (A/B) of 30/70 to 0.5/99.5, a content of the aromatic vinyl compound-derived monomer unit (b2) in the random copolymer block B of 1 to 50% by mass, and a weight average molecular weight (Mw) of 100,000 to 5,000,000.

公开(公告)号：US20240141147A1

公开(公告)日：2024-05-02

申请号：US18214709

申请日：2023-06-27

Applicant: Toyo Tire Corporation

Inventor： Asuka Noda

IPC: C08L9/00 ,  B60C1/00 ,  C08K5/43 ,  C09D7/63 ,  C09D109/00

CPC classification number: C08L9/00 ,  B60C1/00 ,  C08K5/43 ,  C09D7/63 ,  C09D109/00 ,  C08L2203/206

Abstract: An object is to provide a steel cord coating rubber composition that provides excellent workability and excellent peel resistance under heat aging conditions. The steel cord coating rubber composition includes, per 100 parts by mass of a diene-based rubber, 1 to 5 parts by mass of 1,6-hexamethylenediamine-sodium dithiosulfate dihydrate and 0.1 to 1 part by mass of 1,3,5-triazine-2,4,6-trithiol, and the content ratio between 1,6-hexamethylenediamine-sodium dithiosulfate dihydrate and 1,3,5-triazine-2,4,6-trithiol (1,6-hexamethylenediamine-sodium dithiosulfate dihydrate/1,3,5-triazine-2,4,6-trithiol) on a mass basis is 1.6 or more.