公开(公告)号：US20240002556A1

公开(公告)日：2024-01-04

申请号：US18060657

申请日：2022-12-01

Applicant: NORTH UNIVERSITY OF CHINA ,  SHANXI ZHONGBEI NEW MATERIAL TECHNOLOGY CO., LTD.

Inventor： Yaqing LIU ,  Shaofeng ZHOU ,  Guizhe ZHAO

IPC: C08F36/08 ,  C08K3/04 ,  C08K3/22 ,  C08K5/09 ,  C08K5/3465 ,  C08K5/18 ,  C08K3/06 ,  C08K9/04 ,  C08K5/44 ,  C08F36/06 ,  C08K5/14 ,  C08J3/22

CPC classification number: C08F36/08 ,  C08K3/042 ,  C08K3/22 ,  C08K5/09 ,  C08K5/3465 ,  C08K5/18 ,  C08K3/06 ,  C08K9/04 ,  C08K5/44 ,  C08F36/06 ,  C08K5/14 ,  C08J3/22 ,  C08K2003/2296 ,  C08K2201/014

Abstract: A high wear-resistant graphene-modified natural rubber and a preparation thereof. The graphene-modified natural rubber is prepared from 100 parts by weight of a modified natural rubber blend, A parts by weight of modified graphene oxide, 35-65 parts by weight of wear-resistant carbon black, 5-20 parts by weight of a wear-resistant filler, 2-7 parts by weight of zinc oxide, 1-4 parts by weight of stearic acid, 1-4 parts by weight of poly(1,2-dihydro-2,2,4-trimethylquinoline), 1-4 parts by weight of N-isopropyl-N′-phenyl-p-phenylenediamine, 1-4 parts by weight of a vulcanization accelerator, 1-2 parts by weight of sulphur, 0.1-3 parts by weight of a compatibilizer and 1-7 parts by weight of rubber processing oil, where A is greater than 0 and equal to or less than 3.

公开(公告)号：US11767380B2

公开(公告)日：2023-09-26

申请号：US16999302

申请日：2020-08-21

Applicant: THE GOODYEAR TIRE & RUBBER COMPANY

Inventor： Howard Colvin ,  Nicolas Sauty

IPC: C08F36/08

CPC classification number: C08F36/08

Abstract: A guayule rubber processing system and method involves mixing a guayule rubber and at least one solvent blend in an extruder, in order to remove resin found in the guayule miscella and to precipitate the guayule miscella to form a precipitate. The at least one solvent blend has a first solvent configured to precipitate the guayule rubber, and a second solvent configured to swell the resulting precipitate. In particular, a series of the solvent blends may be used at different locations along a length of the extruder and may further include distinct blends of the first solvent and the second solvent, introduced at the different locations, and having different ratios of the first solvent and the second solvent.

公开(公告)号：US11518776B2

公开(公告)日：2022-12-06

申请号：US16345015

申请日：2018-01-18

Applicant: Versalis S.P.A.

Inventor： Anna Sommazzi ,  Guido Pampaloni ,  Giovanni Ricci ,  Francesco Masi ,  Filippo Renili

IPC: C08F36/06 ,  C08F36/08 ,  C07F15/02 ,  C07C251/08 ,  C08F136/06 ,  C08F136/08

Abstract: Oxo-nitrogenated iron complex having general formula (I): in which: R1 and R2, identical or different, represent a hydrogen atom; or they are selected from linear or branched, optionally halogenated C1-C20, preferably C1-C15, alkyl groups, optionally substituted cycloalkyl groups, optionally substituted aryl groups; R3 represents a hydrogen atom, or it is selected from linear or branched, optionally halogenated C1-C20, preferably C1-C15 alkyl groups, optionally substituted cycloalkyl groups, optionally substituted aryl groups; X, identical or different, represent a halogen atom such as, for example, chlorine, bromine, iodine, preferably chlorine; or they are selected from. linear or branched C1-C20, preferably C1-C15, alkyl groups, —OCOR4 groups or —OR4 groups in which R4 is selected from linear or branched C1-C20, preferably C1-C15, alkyl groups; n is 2 or 3. Said oxo-nitrogenated iron complex having general formula (I) can be advantageously used in a catalytic system for the (co)polymerization of conjugated dienes.

公开(公告)号：US11312798B2

公开(公告)日：2022-04-26

申请号：US16763149

申请日：2017-12-22

Applicant: LG Chem, Ltd.

Inventor： Soo Young Choi ,  Suk Joon Yoo ,  Jeong Heon Ahn ,  Sung Ho Park ,  Suk Youn Kang

IPC: C08F36/04 ,  C08F36/06 ,  C08F36/08 ,  C08F136/06 ,  C08F2/00 ,  C08F4/54 ,  C08F4/44

Abstract: The present invention relates to a method of preparing a conjugated diene-based polymer by continuous polymerization using two or more reactors, and relates to a method of preparing a conjugated diene-based polymer which is capable of providing a conjugated diene-based polymer having improved Mooney viscosity and excellent cis 1,4 bond content and linearity, by controlling the injection amount of a conjugated diene-based monomer to each reactor in a specific ratio and resolving the deterioration phenomenon of physical properties, which might be generated in continuous reaction.

公开(公告)号：US11306201B2

公开(公告)日：2022-04-19

申请号：US16881141

申请日：2020-05-22

Applicant: BRIDGESTONE CORPORATION

Inventor： Madoka Kimura

IPC: C08F36/08 ,  C08L9/00 ,  C08L47/00

Abstract: Provided are a rubber composition for tires having excellent low fuel consumption and having crack resistance and tear resistance, which contains a rubber component (A) containing a synthetic isoprene having a weight-average molecular weight (Mw) of 800,000 or more, a molecular weight distribution (Mw/Mn) of 2.5 or less, and a cis-1,4-bond content of 96% or more, a carbon black (B), and a specific carbon black dispersant (C); and a tire using the rubber composition.

公开(公告)号：US11254801B2

公开(公告)日：2022-02-22

申请号：US16483235

申请日：2018-08-21

Applicant: LG Chem, Ltd.

Inventor： Jung Yong Lee ,  Jae Hoon Choe ,  Dong Cheol Choe ,  Jong Young Choi ,  Won Jae Lee ,  Hyeon Hui Kim

IPC: C08K5/17 ,  C08F2/44 ,  C08F36/06 ,  C08K5/06 ,  C08K5/09 ,  C08K5/372 ,  C08F36/08 ,  C08F236/10

Abstract: The present invention relates to a modified polymerization initiator for a conjugated diene-based polymer, and a modified conjugated diene-based polymer including a functional group derived from the modified polymerization initiator.

公开(公告)号：US11220595B2

公开(公告)日：2022-01-11

申请号：US16806235

申请日：2020-03-02

Applicant: THE GOODYEAR TIRE & RUBBER COMPANY

Inventor： Joseph John Kulig ,  Kelsey Elizabeth Cantwell ,  George Jim Papakonstantopoulos

IPC: C08L25/10 ,  C08L23/16 ,  C08L91/00 ,  C08F36/06 ,  C08F36/08 ,  C08K5/103 ,  C08K3/04 ,  C08K5/5419 ,  C08K5/548 ,  B60C1/00 ,  C08K3/06 ,  C08K3/26 ,  C08K3/34 ,  C08K3/36

Abstract: It has been unexpected found that silylated triglyceride oils can be incorporated into tire tread rubber formulations that include reinforcing fillers to provide improved wet traction characteristic, rolling resistance, and tread-wear without compromising cured stiffness (dry traction) and ultimate properties (chip/chunk resistance). The level of silica coupling agent needed in such formulation can also typically reduced. The present invention more specifically discloses a rubber formulation which is comprised of (1) a rubbery polymer; (2) a reinforcing filler, such as silica or carbon black; and (3) a silylated triglyceride oil. The silylated triglyceride oil will include silyl groups of the structural formula: —(CH2)n—Si(OR)3, wherein n represents an integer within the range of 1 to 8, and wherein R represents an alkyl group containing from 1 to 8 carbon atoms.

公开(公告)号：US20210403954A1

公开(公告)日：2021-12-30

申请号：US17328608

申请日：2021-05-24

Applicant: Ajinomoto Co., Inc.

Inventor： Yoshinori TAJIMA ,  Hiroaki RACHI ,  Yosuke NISHIO ,  Zhanna Iosifovna KATASHKINA ,  Valerievich Bylino OLEG

IPC: C12P5/00 ,  C12P5/02 ,  C08F36/08

Abstract: Producing an isoprenoid compound by: 1) culturing an isoprenoid compound-forming microorganism in the presence of a growth promoting agent at a sufficient concentration to grow the isoprenoid compound-forming microorganism; 2) decreasing a concentration of the growth promoting agent to induce formation of the isoprenoid compound by the isoprenoid compound-forming microorganism; and 3) culturing the isoprenoid compound-forming microorganism to form the isoprenoid compound, is characterized in that the growth phase of the isoprenoid compound-forming microorganism is separated from the formation phase of the isoprenoid compound.

公开(公告)号：US11130826B2

公开(公告)日：2021-09-28

申请号：US16461778

申请日：2017-11-28

Applicant: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN

Inventor： Vincent Lafaquiere ,  Julien Thuilliez

IPC: C08F4/52 ,  C08F4/56 ,  C08F236/04 ,  C08F236/06 ,  B01J31/22 ,  C08F10/02 ,  C08F12/08 ,  C08F36/06 ,  C08F36/08

Abstract: A catalytic system based at least on a preformation monomer selected from the group consisting of 1,3-dienes, ethylene, α-olefins and their mixtures, on a metallocene of formula {P(Cp)(Flu)LnG} and on an organometallic compound as cocatalyst is provided. In the formula, Ln denotes a metal atom which is a rare earth metal, G denotes a group comprising the borohydride BH4 unit or denotes a halogen atom X selected from the group consisting of chlorine, fluorine, bromine and iodine, Cp denotes a cyclopentadienyl group of formula C5H4, Flu denotes a fluorenyl group of formula C13H8, P being a group bridging the two Cp and Flu groups and comprising a silicon or carbon atom. Such a catalytic system exhibits an improved stability of the catalytic activity over time, in particular on storage.

公开(公告)号：US20210171727A1

公开(公告)日：2021-06-10

申请号：US16770666

申请日：2018-12-06

Applicant: RENSSELAER POLYTECHNIC INSTITUTE

Inventor： Chulsung BAE

IPC: C08J5/22 ,  C08L53/02 ,  C08L25/08 ,  C08L81/06 ,  C08L65/02 ,  C08L71/12 ,  C08F36/06 ,  C08F36/08 ,  C08F8/04 ,  C08F8/06 ,  C08F8/36 ,  C08K5/37 ,  H01M8/1023 ,  H01M8/1072 ,  H01M8/1088

Abstract: The electrochemical energy conversion system include an anode, a cathode, and a proton exchange membrane disposed between the anode and the cathode. The proton exchange membrane includes a polymer having a hard block polymer, a soft block polymer, and one or more hydrophilic functional groups attached to the soft block polymer. The glass transition temperature of the hard block polymer is higher than a glass transition temperature of the soft block polymer, such that the hard block polymer is non-elastic and the soft block polymer is elastic at a desired operating temperature. The hydrophilic functional groups are attached to the soft block polymer via a thiol-ene reaction to modify double bonds in the soft block polymer. The swellable functional groups are selectively connected to the soft domains of the block copolymers, so that when the membrane swells (under hydration or gas adsorption), the stress is effectively absorbed by the soft domain and the impact on overall mechanical properties is minor, resulting in more durable membranes.