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1.发明授权公开(公告)号：US12084536B2
公开(公告)日：2024-09-10
申请号：US17287626
申请日：2019-10-17
IPC分类号： C08F36/06 , B60C1/00 , C08F4/70 , C08F136/06
CPC分类号： C08F36/06 , B60C1/00 , C08F4/70 , C08F136/06
摘要： Provided is novel polybutadiene having high isotacticity. The polybutadiene has a triad isotacticity (mm) of 72% or more.
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2.发明授权公开(公告)号：US11987660B2
公开(公告)日：2024-05-21
申请号：US18080175
申请日：2022-12-13
发明人： Chunyu Zhang , Lihua Na , Qi Yang , Heng Liu , Xuequan Zhang
IPC分类号： C08F4/70 , C08F4/04 , C08F4/602 , C08F36/06 , C08F136/06
CPC分类号： C08F4/70 , C08F4/04 , C08F4/602 , C08F36/06 , C08F136/06
摘要： The present disclosure relates to the technical field of preparation of syndiotactic 1,2-polybutadiene (s-PB), in particular to a catalytic system and use thereof, and a preparation method of s-PB. In the present disclosure, the catalytic system includes an iron-containing organic compound, an azodicyano compound, an organoaluminum compound, and a free radical scavenger; where an iron element in the iron-containing organic compound, the azodicyano compound, the organoaluminum compound, and the free radical scavenger have a molar ratio of 1:(0.5-10):(5-100):(1-1000); and the free radical scavenger is selected from the group consisting of a sterically hindered phenol, a sterically hindered amine, and a phosphorus-containing antioxidant. The catalytic system can prepare the s-PB with a high activity at a high temperature, and the s-PB has a melting point of 60° C. to 130° C. with an extremely low gel content or even no gelation.
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公开(公告)号：US11970581B2
公开(公告)日：2024-04-30
申请号：US18259919
申请日：2021-12-29
IPC分类号： C08G77/18 , B60C1/00 , C08C19/02 , C08C19/25 , C08F4/48 , C08F12/08 , C08F136/06 , C08F236/06 , C08K3/36 , C08L9/00 , C08L15/00
摘要： A functionalized macromolecule includes a hydrogenated interpolymer portion, a non-hydrogenated polymer portion, and the radical of a functional coupling agent covalently bonded to and linking those portions. The functional group of the coupling agent exhibits interactivity with silica. The interpolymer can include vinyl aromatic mer and conjugated diene mer, with at least some of the latter, typically at least 50 mole percent, having been hydrogenated.
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公开(公告)号：US20240067892A1
公开(公告)日：2024-02-29
申请号：US18163853
申请日：2023-02-02
发明人： Julia A. KORNFIELD , Ming-Hsin WEI
IPC分类号： C10L1/195 , C08F136/06 , C08G61/08 , C08K11/00 , C10L1/196 , C10L1/198 , C10L1/236 , C10L10/02 , C10L10/08
CPC分类号： C10L1/195 , C08F136/06 , C08G61/08 , C08K11/00 , C10L1/196 , C10L1/198 , C10L1/2366 , C10L10/02 , C10L10/08 , C10L1/1973
摘要： Described herein are associative polymers capable of controlling a physical and/or chemical property of non-polar compositions that can be used when the non-polar composition is in a flow, and related compositions, methods and systems. Associative polymers herein described have a non-polar backbone with a longest span having a molecular weight that remains substantially unchanged under the flow conditions and functional groups presented at ends of the non-polar backbone, with a number of the functional groups presented at the ends of the non-polar backbone formed by associative functional groups capable of undergoing an associative interaction with another associative functional group with an association constant (k) such that the strength of each associative interaction is less than the strength of a covalent bond between atoms and in particular less than the strength of a covalent bond between backbone atoms.
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公开(公告)号：US20230331874A1
公开(公告)日：2023-10-19
申请号：US18247850
申请日：2021-09-29
发明人： Nicolai Kolb , Kai-Steffen Krannig , Jürgen Hellwig , Matthias Bahlmann , Alexander Pschantka , Philip Kemper
IPC分类号： C08F136/06 , C08C19/04 , C08F2/06
CPC分类号： C08C19/04 , C08F2/06 , C08F136/06
摘要： The present invention relates to a process for preparing hydroxy-functionalized polydiene, preferably polybutadiene or polyisoprene, by reacting monomer diene with hydrogen peroxide in the presence of a hydrophilic organic solvent, wherein the total amount of monomer diene used is added to the reaction in at least two parts, wherein the second part of the monomer diene is added to the reaction at a temperature of the reaction mixture that is at least +5 K different from the temperature of the reaction mixture at the addition of the first part of the monomer diene, to hydroxy-functionalized polybutadiene, having a dispersity index D below 2.7, a viscosity at 30° C. below 3200 mPa*s, an OH-number of from 50 to 90, a number average molecular weight Mn of from 1.6 to 2.5 kDa, and a weight number average molecular weight Mw of from 4.0 to 5.6 kDa, and comprising the monomer units derived from 1,3-butadiene in a specific ratio, and use of the hydroxy-functionalized polybutadiene, for the production of polyurethane-based thermo-or electro-insulation, adhesives or sealants or polyesters.
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公开(公告)号：US11787879B2
公开(公告)日：2023-10-17
申请号：US17711208
申请日：2022-04-01
发明人： Takumi Kaneko , Kazuyoshi Shiga , Shigeru Yamago
摘要： An object of the present invention is to provide a production method of a diene-based polymer that can control the crosslinking morphology. The present invention provides a method for producing a modified diene-based polymer having a structure represented by the formula (1), comprising a first step of mixing a diene-based polymer and a dithioester compound to prepare a mixture; and a second step of irradiating a ray to the mixture under an inert atmosphere.
[In the formula (1), R1 and R2 represent an alkyl group having 1 or more carbon atoms, an aryl group having 6 or more carbon atoms, an aralkyl group having 6 or more carbon atoms, a hydrogen atom, or a halogen atom; and Z is an organic group, an organic group where a part of hydrogen atom of the above organic group is substituted, a hydrogen atom, or a halogen atom.]-
公开(公告)号：US11628688B2
公开(公告)日：2023-04-18
申请号：US17060492
申请日：2020-10-01
发明人： Ki Won Lim , Byeong Joo Jeon , Sae Um Ahn
摘要： Disclosed are a rubber composition for tire tread and a tire manufactured using the same, in which the rubber composition for tire tread comprises a raw material rubber, which comprises a first solution-polymerized styrene-butadiene rubber with a low glass transition temperature (Tg) and a second solution-polymerized styrene-butadiene rubber with a high glass transition temperature (Tg), a reinforcing filler, a silane coupling agent, a functionalized liquid polymer, and a first resin with a high glass transition temperature and a second resin with a low glass transition temperature.
The rubber composition for tire tread maximizes the dispersion of silica and the interaction with rubber, and thus, the rubber composition is excellent in all of the properties with respect to wear resistance, low fuel economy, and braking performance.-
公开(公告)号：US20220396648A1
公开(公告)日：2022-12-15
申请号：US17769846
申请日：2021-07-21
申请人： LG CHEM, LTD.
发明人： Suk Youn KANG , Tae Chul LEE , Dong Hui KIM , Seo Won CHOI
IPC分类号： C08F8/32 , C08F136/06 , C08F4/52 , C08K3/04
摘要： Disclosed is an imine group-containing novel compound which is useful as a polymer modifier, a modified conjugated diene-based polymer including a functional group derived from the novel compound and having excellent affinity with a filler, a method for preparing the polymer, and a rubber composition including the polymer, and provides an imine group-containing compound represented by Formula 1, a modified conjugated diene-based polymer including a functional group derived therefrom, and a method for preparing the polymer.
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公开(公告)号：US20220396645A1
公开(公告)日：2022-12-15
申请号：US17782276
申请日：2020-12-10
发明人： Ryuji Kawamura , Hirofumi Fujii , Satoshi Okuda
IPC分类号： C08F2/50 , C08G18/62 , C08F220/20 , C08F220/18 , C08F136/06 , C08G18/73 , C08G18/24
摘要： Provided is a curable composition including: a curable oligomer having, in its molecule, a branched polyolefin structure and a (meth)acryloyl group; a saturated cycloalkyl (meth)acrylate monomer having, in its molecule, a saturated cyclic hydrocarbon structure and a (meth)acryloyl group; and a saturated chain alkyl (meth)acrylate monomer having, in its molecule, a saturated chain hydrocarbon structure and a (meth)acryloyl group.
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公开(公告)号：US11492426B2
公开(公告)日：2022-11-08
申请号：US16987521
申请日：2020-08-07
摘要： A functionalized elastomer comprising the reaction product of a living elastomeric polymer and a polymerization terminator of formula I [R1]n—B—[X—R2]m I where B is boron; X is oxygen or nitrogen; R1 is independently vinyl, oxiranyl, phenyl, 1-alkenyl of 2 to 8 carbon atoms, alkyl of 1 to 8 carbon atoms including at least one halogen atom, 1-alkenyl of 2 to 8 carbon atoms including at least one halogen or one hydrogen; R2 is independently C1 to C8 alkyl, C8 to C14 aryl; or when m>1 R2 may be taken together to form a substituted or unsubstituted cyclic structure comprising 2 to 16 carbon atoms where the cyclic structure may be heterocyclic or non-heterocyclic; n is 1 or 2, m is 1 or 2, and n+m=3.
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