-
公开(公告)号：US12098232B2
公开(公告)日：2024-09-24
申请号：US17423989
申请日：2020-09-25
申请人： LG Chem, Ltd.
发明人： Suk Youn Kang , Ju Ryang Bae , Seo Won Choi , Tae Chul Lee
摘要： 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.
-
2.发明授权公开(公告)号：US12018109B2
公开(公告)日：2024-06-25
申请号：US17421061
申请日：2019-11-26
申请人： SHOWA DENKO K.K.
发明人： Naoki Sekioka , Masanao Kamijo , Noriko Ogawa
IPC分类号： C08F279/02 , C08C19/25 , C08F2/26 , C08F2/30 , C08F230/08 , C08L11/02 , C09J151/04
CPC分类号： C08F279/02 , C08C19/25 , C08F2/26 , C08F2/30 , C08F230/085 , C08L11/02 , C09J151/04 , C09J2301/304 , C09J2400/143
摘要： A method for producing a chloroprene graft copolymer latex includes a step of adding an ethylenic double bond-containing silane coupling agent (B) to a chloroprene polymer latex and graft copolymerizing the ethylenic double bond-containing silane coupling agent (B) to the chloroprene polymer (A) in the chloroprene polymer latex at 10° C. to 50° C. (inclusive). The amount of the ethylenic double bond-containing silane coupling agent (B) added is 0.4 parts by mass to 9.0 parts by mass (inclusive) per 100 parts by mass of the chloroprene polymer (A). The present invention also relates to an adhesive containing the chloroprene graft copolymer latex and to a method for using the adhesive. The present invention can provide a method for producing a chloroprene graft copolymer latex containing no organic solvent and having high adhesive strength to glass, an adhesive containing the same, and a method for using the adhesive.
-
公开(公告)号：US20240109980A1
公开(公告)日：2024-04-04
申请号：US18274745
申请日：2022-01-14
发明人： FLORENT VAULTIER , KEVIN ROOS , FABIEN BARRET
CPC分类号： C08C19/22 , B60C1/0016 , B60C11/0008 , C08C19/25 , C08L9/06 , B60C2011/0025
摘要： A resin-extended modified diene elastomer is capable of being obtained by a process comprising at least: anionically polymerizing, in an organic solvent, at least one conjugated diene monomer having from 4 to 12 carbon atoms in the presence of a polymerization initiator to form a living diene elastomer having a number-average molar mass Mn1; modifying the living diene elastomer by reaction with a modifying agent to form a modified diene elastomer having a number-average molar mass Mn2 and a glass transition temperature, measured according to the standard ASTM D3418-08, within a range extending from −95° C. to −70° C.; adding at least one plasticizing resin to the organic solvent comprising the modified diene elastomer; and removing the organic solvent to obtain the resin-extended modified diene elastomer. The resin-extended modified diene elastomer has an Mn2/Mn1 ratio of strictly greater than 1.00 and an Mn2 of greater than or equal to 200,000 g/mol.
-
公开(公告)号：US20240043587A1
公开(公告)日：2024-02-08
申请号：US17815587
申请日：2022-07-28
发明人： Jean-Noel Marsat , Marine Sophie Francoise Wassen , Manuela Pompei , Karmena Izabela Anyfantaki
IPC分类号： C08F136/08 , C08F212/08 , C08F36/06 , C08K3/36 , C08K3/04 , C08C19/22 , C08C19/25 , C08K5/548 , B60C1/00
CPC分类号： C08F136/08 , C08F212/08 , C08F36/06 , C08K3/36 , C08K3/04 , C08C19/22 , C08C19/25 , C08K5/548 , B60C1/0016 , C08K2201/006 , B60C2200/06
摘要： The present invention is directed to a rubber composition for a truck tire, the rubber composition comprising 70 phr to 95 phr of polyisoprene, and 5 phr to 30 phr of a solution polymerized styrene butadiene rubber having a glass transition temperature of less than −40° C. which is functionalized for the coupling to silica. Furthermore, the rubber composition comprises 40 phr to 80 phr of a filler comprising predominantly silica. Moreover, the present invention is directed to a truck tire comprising the rubber composition and to a truck comprising such a tire.
-
公开(公告)号：US20240034820A1
公开(公告)日：2024-02-01
申请号：US17815584
申请日：2022-07-28
IPC分类号： C08F136/08 , C08F136/06 , C08C19/22 , C08C19/25 , C08K3/36 , C08K3/04 , C08K5/548 , B60C1/00
CPC分类号： C08F136/08 , C08F136/06 , C08C19/22 , C08C19/25 , C08K3/36 , C08K3/04 , C08K5/548 , B60C1/0016 , C08K2201/006 , B60C2200/06
摘要： The present invention is directed to a rubber composition for a truck tire, the rubber composition comprising 70 phr to 95 phr of polyisoprene, 5 phr to 30 phr of a polybutadiene rubber having a cis content of less than 60% and being functionalized for the coupling to silica, as well as 40 phr to 80 phr of a filler comprising predominantly silica. Furthermore, the present invention is also directed to a tire comprising such a rubber composition and a truck with said tire.
-
公开(公告)号：US11795243B2
公开(公告)日：2023-10-24
申请号：US17145933
申请日：2021-01-11
IPC分类号： C08F136/06 , C08C19/25 , C08F236/08 , C08F236/06 , C08L19/00 , C08K3/04 , C08K3/36 , C08L7/00 , C08F136/08 , C08C19/44 , C08L9/06 , C08F4/58 , C08F4/48
CPC分类号： C08C19/25 , C08C19/44 , C08F136/06 , C08F136/08 , C08F236/06 , C08F236/08 , C08K3/04 , C08K3/36 , C08L7/00 , C08L9/06 , C08L19/006 , C08F4/48 , C08F4/58 , C08F2810/40 , C08F136/06 , C08F2/06 , C08F136/06 , C08F2/42 , C08L9/06 , C08L91/00 , C08L15/00 , C08K3/36 , C08K5/548 , C08K3/04 , C08K3/22 , C08K5/09 , C08K5/18 , C08K3/06 , C08K5/47 , C08K5/31 , C08L9/06 , C08L91/00 , C08L9/00 , C08K3/36 , C08K5/548 , C08K3/04 , C08K3/22 , C08K5/09 , C08K5/18 , C08K3/06 , C08K5/47 , C08K5/31 , C08F36/06 , C08F4/545 , C08F36/08 , C08F4/545 , C08F136/08 , C08F2/06
摘要： The present invention relates to a modified polymer having the structure of Formula (I) and Formula (IV):
wherein A,
R1, R2, R3, a, and n are as described herein and
wherein
R, R′, R″, x, and k are as described herein and methods for preparation thereof. The present invention also relates to a compound having the structure of Formula (II):
wherein A, R1, R2, R3, a, and n are as described herein. The present invention also relates to a process for polymerizing unsaturated hydrocarbon monomers.-
公开(公告)号：US20230130221A1
公开(公告)日：2023-04-27
申请号：US17914656
申请日：2021-03-29
摘要： A conjugated diene-based polymer including at least conjugated diene monomer units, and having a shrinkage factor of high molecular weight molecules of 0.4 to 0.8, a degree of adsorption of high molecular weight molecules onto silica of 75% or less, and a degree of adsorption of medium molecular weight molecules of 40 to 100%.
-
公开(公告)号：US20230102867A1
公开(公告)日：2023-03-30
申请号：US17622699
申请日：2020-06-23
发明人： Masanao KAWABE , Tadashi KURATOMI
IPC分类号： C08F212/36 , C08F212/08 , C08F210/14 , C08F8/42 , C08F236/06 , C08C19/25 , B60C1/00
摘要： To provide a modified vinylaromatic copolymer which can be used in production of copolymer rubber and which has reactivity and solubility, and a copolymer rubber material obtained therefrom, which simultaneously has processability, strength, and homogeneity. The modified vinylaromatic copolymer is a copolymer containing a structural unit (a) derived from a divinylaromatic compound and a structural unit (b) derived from a monovinylaromatic compound, wherein the structural unit (a) at least partially includes the following crosslinked structural unit (a1), and a terminal is modified by a modification group having at least one functional group selected from the group consisting of an amino group, a hydroxyl group, and an alkoxysilyl group.
-
公开(公告)号：US11505623B2
公开(公告)日：2022-11-22
申请号：US16611713
申请日：2018-05-08
发明人： Yu Shinke , Kazuya Uenishi
摘要： The present invention provides a compounding agent which, when used in a rubber composition containing a reinforcing filler, exhibits excellent dispersibility, workability, toughness, low heat build-up, and wear resistance; and a rubber composition containing the compounding agent. A modified butadiene polymer of the present invention has a functional group containing a nitrogen atom and silicon atom at a terminal, a weight average molecular weight of the modified butadiene polymer being from 1000 to 15000, and a molecular weight distribution of the modified butadiene polymer being 2.0 or less.
-
公开(公告)号：US11479618B2
公开(公告)日：2022-10-25
申请号：US17058320
申请日：2019-05-23
IPC分类号： C08C19/25 , C08C19/44 , C08F236/06 , C08K3/36
摘要： A process for preparing a functionalized polybutadiene is provided. The process comprises the following steps: a) homopolymerising butadiene with a catalytic system based on at least one preforming conjugated diene, a salt of one or more rare earth metals of an organic phosphoric acid, an aluminium-containing alkylating agent, an alkylaluminium halide; b) adding a polyfunctional compound to the pseudo-living elastomer formed in step (a); and c) adding a functionalizing agent to the mixture formed in step (b). The total molar amount of aluminium in the polymerization medium is such that the (aluminium/rare earth salt) molar ratio has a value between 1 and 5 and the polymerization is carried out at a temperature between 40° C. and 90° C.
A functionalized polybutadiene that can be obtained by the process, and a rubber composition containing the functionalized polybutadiene is also provided.
-
-
-
-
-
-
-
-
-
搜索结果
562 条记录 (耗时 0.026 秒)
