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101. 发明申请

US20210301046A1 Modified Conjugated Diene-Based Polymer, Rubber Composition, and Tire 有权
公开(公告)号：US20210301046A1
公开(公告)日：2021-09-30
申请号：US16326581
申请日：2017-08-07
申请人： Asahi Kasei Kabushiki Kaisha
发明人： Shinichi Sekikawa , Miki Kyo
IPC分类号： C08F36/06 , B60C1/00 , C08L9/00 , C08K3/36 , C08C19/25 , C08C19/22
摘要： A modified conjugated diene-based polymer, including a coupling polymer, wherein a ratio of the coupling polymer, obtained by gel permeation chromatography (GPC), is 30% by mass or more and less than 70% by mass in the entire modified conjugated diene-based polymer, and a modification ratio obtained by adsorption GPC is 30% by mass or more and less than 70% by mass in the entire modified conjugated diene-based polymer, when a peak top molecular weight, obtained by the GPC, of the coupling polymer of the modified conjugated diene-based polymer is represented by Mp1 and a peak top molecular weight of a non-coupling polymer is represented by Mp2, (Mp1/Mp2)≥3.4, and a shrinking factor (g′) is less than 0.60.

102. 发明申请

US20210300116A1 Tire Tread Rubber Composition 有权
公开(公告)号：US20210300116A1
公开(公告)日：2021-09-30
申请号：US17344051
申请日：2021-06-10
申请人： Bridgestone Americas Tire Operations, LLC
发明人： Anthony M. Unger , Benjamin C. Galizio
IPC分类号： B60C1/00 , C08K3/04 , C08L91/00 , C08L25/04 , C08L7/00 , C08L9/06
摘要： Disclosed herein are tire tread rubber compositions comprising a specified elastomer component, reinforcing silica filler, a specified hydrocarbon resin, a cure package, and optionally oil. The elastomer component includes styrene-butadiene rubber; polybutadiene; and guayule natural rubber.

103. 发明授权

US11130832B2 Modified conjugated diene-based polymer and rubber composition including the same 有权
公开(公告)号：US11130832B2
公开(公告)日：2021-09-28
申请号：US16470470
申请日：2018-11-30
申请人： LG Chem, Ltd.
发明人： Jin Young Kim , Won Hee Kim , He Seung Lee , Ki Seok Son , No Ma Kim
IPC分类号： C08F236/10 , C08F8/42 , C08K3/36 , C08K3/04 , B60C1/00 , B60C11/00
摘要： A modified conjugated diene-based polymer, and more particularly, a modified conjugated diene-based polymer prepared by continuous polymerization and having remarkable processability, narrow molecular weight distribution and excellent physical properties, and a rubber composition including the same.

104. 发明申请

US20210291589A1 PNEUMATIC TIRE 有权
公开(公告)号：US20210291589A1
公开(公告)日：2021-09-23
申请号：US16330535
申请日：2017-09-13
申请人： Toyo Tire Corporation
发明人： Yuuki Masumoto
IPC分类号： B60C1/00 , C08L91/06 , C08K5/098 , C08K5/20 , C08L9/06 , C08L7/00
摘要： Provided is a pneumatic tire wherein a rubber composition is used in a tread rubber, a sidewall rubber, or a rim strip. The rubber composition contains a diene rubber, a petroleum-derived wax, a fatty acid metal salt and a compound represented by the formula (1) (in the formula, R1 and R2 each represent a hydrogen atom, an alkyl group, an alkenyl group or an alkynyl group, and M+ represents N+, K+, or Li+), wherein the amount of a phenylenediamine age resister is less than 1 phr, and a difference obtained by subtracting the number of carbon atoms in a constituent fatty acid contained the most in the fatty acid metal salt from the number of carbon atoms in a hydrocarbon contained the most in the petroleum-derived wax is −10 to 8. Thereby, the pneumatic tire can suppress whitening and discoloration to reddish brown while maintaining ozone resistance and improve appearance.

105. 发明申请

US20210291197A1 System and Method for Creating and Collecting Magnetic Microplastics 有权
公开(公告)号：US20210291197A1
公开(公告)日：2021-09-23
申请号：US17209186
申请日：2021-03-22
申请人： Nils Nedrelid
发明人： Nils Nedrelid
IPC分类号： B03C1/28 , B03C1/02 , B09B1/00 , B05D7/00 , B60C1/00 , C02F1/48 , E04D5/08
摘要： A system and method for creating and collecting magnetic microplastics effectively combines magnetic material with plastics during their manufacture, thereby producing microplastics that can be easily collected via removal devices equipped with magnetic components. Magnetic particles are mixed with plastic/rubber resins during manufacturing of tires, roofing materials, and other plastic items. The magnetic particles can be made from natural or artificial magnets. After mixing, the partially-magnetic rubber/plastic result can be applied to areas of the manufactured plastic item that have the highest propensity to degrade into microplastic pollutants. For example, the thread of a tire, where friction with the road causes most of the wear, is an optimal location for integration of magnetic particles. When the plastics break down into microplastics, the microplastics can then be collected with magnets. The collected microplastics can then be removed from the magnetic collectors during routine maintenance and subsequently recycled safely.

106. 发明申请

US20210284827A1 CONJUGATED DIENE-BASED POLYMER COMPOSITION AND TIRE 有权
公开(公告)号：US20210284827A1
公开(公告)日：2021-09-16
申请号：US17195769
申请日：2021-03-09
申请人： Asahi Kasei Kabushiki Kaisha
发明人： Shogo Sumitani , Shinichi Sekikawa , Kenta Hisamura , Yoshifumi Araki
IPC分类号： C08L9/06 , B60C1/00
摘要： Problem to be Solved
The present invention provides a conjugated diene-based polymer composition excellent in rolling resistance, grip performance on a wet road surface, and abrasion resistance when formed into a tire.
Solution
A conjugated diene-based polymer composition containing: 10 to 90 parts by mass of a conjugated diene-based polymer (A) having a glass transition temperature of −20° C. or more; and 10 to 90 parts by mass of a conjugated diene-based polymer (B) having a glass transition temperature of −25° C. or less, wherein the conjugated diene-based polymer (A) has an absolute molecular weight, measured by viscosity detector-equipped GPC-light scattering measurement, of 40×104 or more and 5000×104 or less, and a branch number (Bn), measured by the viscosity detector-equipped GPC-light scattering measurement, of 8 or more.

107. 发明申请

US20210284826A1 RUBBER BLEND, SULFUR-CROSSLINKABLE RUBBER MIXTURE, AND VEHICLE TIRE 有权
公开(公告)号：US20210284826A1
公开(公告)日：2021-09-16
申请号：US16324920
申请日：2017-08-14
申请人： Continental Reifen Deutschland GmbH
发明人： Carla Recker , Catarina Sa , Kathrin Wehming-Bomkamp , Viktoria Pavon Sierra , Norbert Mueller , Michael Radke
IPC分类号： C08L9/06 , C08F2/06 , C08F236/06 , C08K3/04 , C08K3/06 , C08K3/36 , C08K5/5419 , C08K5/548 , C08K5/01 , B60C1/00
摘要： The invention relates to a sulfur-crosslinkable rubber mixture comprising a rubber blend composed of at least one solution-polymerized diene polymer A of high molecular weight and at least one solution-polymerized polymer B of low molecular weight, wherein at least one of polymers A and B has been functionalized at the chain end and/or along the polymer chain and/or at a coupling site with at least one group selected from epoxy groups, hydroxyl groups, carboxyl groups, silane sulfide groups, amino groups, siloxane groups, organosilicon groups, phthalocyanine groups and amino group-containing alkoxysilyl groups, 30 to 300 phr of at least one silica and 1 to 150 phr of at least one hydrocarbon resin having a softening point to ASTM E 28 (ring and ball) of 10 to 180° C.

108. 发明授权

US11118050B2 Functionalized polymer, rubber composition and pneumatic tire 有权
公开(公告)号：US11118050B2
公开(公告)日：2021-09-14
申请号：US16705310
申请日：2019-12-06
申请人： The Goodyear Tire & Rubber Company
发明人： Aaron Patrick Murray , Kelsey Elizabeth Cantwell , Ji Yang Jin
IPC分类号： C08L53/00 , C08F293/00 , C08K3/36 , B60C1/00 , C08L9/06
摘要： The present invention is directed to a functionalized elastomer comprising the reaction product of a living anionic elastomeric polymer and a polymerization terminator of formula I where X is Cl, Br, or I; m is an integer from 0 to 2, n is an integer from 1 to 3, with the proviso that n+m=3; R1, R2 are independently C1 to C18 alkyl, aryl, or a combination thereof, or R1, R2 are independently —SiR3 where R is independently alkyl, aryl, alkoxy, or disubstituted amino, or R1 and R2 taken together with their common nitrogen atom and optionally a sulfur or oxygen heteroatom to form a five to eight membered ring; R3 is hydrogen, or C1 to C18 alkyl, aryl, or a combination thereof, or R3 is —SiR3 where R is independently alkyl, aryl, alkoxy, or disubstituted amino, or R3 is —R6—R7, where R6 is C1 to C3 alkanediyl and R7 is selected from the following structures —S—Z, —N(R8)(R9), —O(Y), or Si(OR10)3, where R8 and R9 are independently C1 to C18 alkyl, aryl, or a combination thereof, Y and Z are independently selected from the group consisting of methoxymethyl, tetrahydropyranyl, tetrahydrothiopyranyl, tetrahydrofuranyl, tert-butyl, allyl, 1-ethoxyethyl, benzyl, triphenylmethyl, triethylsilyl, triisopropylsilyl, trimethylsilyl, tert-butyl dimethyl silyl, tert-butyl diphenyl silyl, and isopropyldimethylsilyl, and R10 are independently C1 to C4 alkyl; or when m=1, the polymerization terminator may have the formula II where R4, R5 are independently C1 to C18 alkyl, aryl, or a combination thereof, or R4, R5 are independently —SiR3 where R is independently alkyl, aryl, alkoxy, or disubstituted amino, X and R3 are as defined previously, and k is an integer from 0 to 10.

109. 发明授权

US11118034B2 Tire 有权
公开(公告)号：US11118034B2
公开(公告)日：2021-09-14
申请号：US16473583
申请日：2017-12-28
申请人： SUMITOMO RUBBER INDUSTRIES, LTD.
发明人： Yuki Kasai , Hirotoshi Otsuki
IPC分类号： C08L7/00 , B60C1/00 , C08L9/06
摘要： According to the tire of the present invention having a tread composed of a rubber composition comprising, based on 100 parts by mass of a rubber component, 1 to 20 parts by mass of an ethylene-propylene-styrene copolymer, wherein the composition ratio thereof is 10 to 60% by mass of ethylene, 10 to 60% by mass of propylene, and 5 to 40% by mass of styrene; and 3 to 100 parts by mass of carbon black, a tire having a tread composed of a rubber composition excellent in chipping resistance can be provided.

110. 发明授权

US11117997B2 Functionalized polymer, rubber composition and pneumatic tire 有权
公开(公告)号：US11117997B2
公开(公告)日：2021-09-14
申请号：US16544187
申请日：2019-08-19
申请人： The Goodyear Tire & Rubber Company
发明人： Aaron Patrick Murray , Kelsey Elizabeth Cantwell , Ji Yang Jin
IPC分类号： C08F293/00 , B60C1/00 , C08K3/36
摘要： The present invention is directed to a functionalized elastomer comprising the reaction product of a living anionic elastomeric polymer and a polymerization terminator of formula I where X is Cl, Br, or I; m is an integer from 0 to 2, n is an integer from 1 to 3, with the proviso that n+m=3; R1, R2 are independently C1 to C18 alkyl, aryl, or a combination thereof, or R1, R2 are independently —SiR3 where R is independently alkyl, aryl, alkoxy, or disubstituted amino, or R1 and R2 taken together with their common nitrogen atom and optionally a sulfur or oxygen heteroatom to form a five to eight membered ring; R3 is hydrogen, or C1 to C18 alkyl, aryl, or a combination thereof, or R3 is —SiR3 where R is independently alkyl, aryl, alkoxy, or disubstituted amino, or R3 is -R6-R7, where R6 is C1 to C3 alkanediyl and R7 is selected from the following structures —S—Z, —N(R8)(R9), —O(Y), or Si(OR10)3, where R8 and R9 are independently C1 to C18 alkyl, aryl, or a combination thereof, Y and Z are independently selected from the group consisting of methoxymethyl, tetrahydropyranyl, tetrahydrothiopyranyl, tetrahydrofuranyl, tert-butyl, allyl, 1-ethoxyethyl, benzyl, triphenylmethyl, triethylsilyl, triisopropylsilyl, trimethylsilyl, tert-butyl dimethyl silyl, tert-butyl diphenyl silyl, and isopropyldimethylsilyl, and R10 are independently C1 to C4 alkyl; or when m=1, the polymerization terminator may have the formula II where R4, R5 are independently C1 to C18 alkyl, aryl, or a combination thereof, or R4, R5 are independently —SiR3 where R is independently alkyl, aryl, alkoxy, or disubstituted amino, X and R3 are as defined previously, and k is an integer from 0 to 10.

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