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    Rubber composition for tire, and pneumatic tire
    2.
    发明授权
    Rubber composition for tire, and pneumatic tire 有权

    公开(公告)号：US11608425B2

    公开(公告)日：2023-03-21

    申请号：US16753225

    申请日：2018-10-04

    申请人： THE YOKOHAMA RUBBER CO., LTD.

    发明人： Ayaki Kazariya ,  Makoto Ashiura ,  Satoshi Mihara ,  Kazuya Uenishi ,  Yu Shinke

    IPC分类号： C08L9/06 ,  C08K3/36 ,  C08K5/544 ,  B60C1/00 ,  C08F236/06

    摘要： A rubber composition for a tire contains a diene rubber, silica, and a specific modified butadiene polymer, wherein the diene rubber contains an aromatic vinyl-conjugated diene rubber A and at least one rubber component B selected from an aromatic vinyl-conjugated diene rubber b1 other than the rubber A and a butadiene rubber b2 having a weight average molecular weight of ≥15000. A content of the aromatic vinyl-conjugated diene rubber A is from 30 to 90% by mass, and a content of the rubber component B is from 10 to 70% by mass, an average TG of the diene rubber is lower than −20° C., a content of the silica is from 80 to 200 parts by mass per 100 parts by mass of the diene rubber, and a content of the modified butadiene polymer is from 1.0 to 25.0% by mass with respect to content of the silica.

    RUBBER COMPOSITION AND TIRE
    4.
    发明申请
    RUBBER COMPOSITION AND TIRE 有权

    公开(公告)号：US20230043282A1

    公开(公告)日：2023-02-09

    申请号：US17787040

    申请日：2020-12-16

    申请人： BRIDGESTONE CORPORATION ,  Synthomer Adhesive Technologies LLC

    发明人： Koichi SAITO ,  Nahoko ITO ,  Soumendra Kumar BASU ,  Mark William INGRATTA

    IPC分类号： C08L9/06 ,  C08L7/00

    摘要： A rubber composition includes: a rubber component; a filler in an amount of 40 to 125 parts by mass per 100 parts by mass of the rubber component; and a hydrogenated resin in an amount of 5 to 50 parts by mass per 100 parts by mass of the rubber component, the resin having a softening point of higher than 110° C. and a weight average molecular weight, as determined in terms of polystyrene, of 200 to 1200 g/mol. The rubber composition can be used to produce a tire having an excellent wet grip performance and a low rolling resistance, and a vulcanized rubber having excellent handling properties.

    SYNTHESIS AND 3D PRINTING OF PHOTOCURABLE COLLOIDS
    5.
    发明申请
    SYNTHESIS AND 3D PRINTING OF PHOTOCURABLE COLLOIDS 有权

    公开(公告)号：US20230038063A1

    公开(公告)日：2023-02-09

    申请号：US17903013

    申请日：2022-09-05

    申请人： VIRGINIA TECH INTELLECTUAL PROPERTIES, INC.

    发明人： Timothy E. LONG ,  Viswanath MEENAKSHISUNDARAM ,  Philip J. SCOTT ,  Christopher B. WILLIAMS

    IPC分类号： B29C64/124 ,  C08L9/06 ,  B33Y10/00 ,  C08K9/10 ,  C08K3/36 ,  B33Y70/10

    摘要： Photocurable colloid binders are provided that overcome deficiencies associated with 3D printing of high molecular weight polymers via VAT photopolymerization. Methods of additive manufacturing are also provided using the binders. The approaches described herein effectively decouple the viscosity-molecular weight relationship by synthesizing and processing photo-reactive aqueous colloids that are sequestered within a photocrosslinkable scaffold. Sequestering polymers within discrete internal phases prevents inter-particle entanglement of the polymer chains, thus ensuring low viscosity. VP of polymer colloids results in a solid green body embedded with high molecular weight polymer particles. A post-processing heated drying step allows the polymers to coalesce and further entangle, forming a semi-interpenetrating network with mechanical performance of the high molecular weight material. The resins can further include inorganic particles such as silica and other ceramics, metal particles, and the like. The coalescence can result in the particles being encapsulated in polymer, yielding unique hybrid materials with tunable properties.

    TIRE
    6.
    发明申请
    TIRE 有权

    公开(公告)号：US20230037587A1

    公开(公告)日：2023-02-09

    申请号：US17785468

    申请日：2020-09-30

    申请人： BRIDGESTONE CORPORATION

    发明人： Kana MIENO

    IPC分类号： C08L7/00 ,  C08L9/06 ,  B60C1/00

    摘要： A tire having excellent wet grip performance and low rolling resistance is provided. This tire is a tire obtained by using a rubber composition that includes a rubber component containing a rubber having an isoprene structure and an aminoalkoxysilane-modified styrene-butadiene rubber having an amount of bonded styrene of 15% or less; a filler containing a silica having a nitrogen adsorption specific surface area (BET method) of 130 m2/g or more and less than 330 m2/g, the amount of the filler being 40 to 125 parts by mass with respect to 100 parts by mass of the rubber component; and a hydrogenated resin having a softening point of higher than 110° C. and having a weight average molecular weight as converted to polystyrene of 200 to 1200 g/mol, the amount of the hydrogenated resin being 5 to 50 parts by mass per 100 parts by mass of the rubber component.

    Functionalized Polymers Tread Additive To Improve All-Season Tire Performance
    8.
    发明申请
    Functionalized Polymers Tread Additive To Improve All-Season Tire Performance 有权

    公开(公告)号：US20230016289A1

    公开(公告)日：2023-01-19

    申请号：US17783041

    申请日：2020-12-09

    申请人： ExxonMobil Chemical Patents Inc.

    发明人： Paul T. Q. Nguyen ,  Edward J. Blok ,  Anthony J. Dias ,  Ranjan Tripathy ,  Jason A. Mann

    IPC分类号： B60C1/00 ,  C08L7/00 ,  C08L9/06

    摘要： An elastomeric composition is disclosed. The elastomeric composition includes, per 100 parts by weight of rubber (phr): about 20 to about 40 phr of a polybutadiene having a cis-1,4 linkage content of at least 95%; about 40 to about 70 phr styrene/ butadiene copolymer; about 5 to about 30 phr natural rubber or polyisoprene; a curative agent; an antioxidant; about 1 to about 20 phr carbon black; about 1 to about 30 phr plasticizing oil; about 40 to about 80 phr silica; about 1 to about 15 phr silane coupling agent and about 5 to about 30 phr of a polymer selected from the group consisting of an ethylene-propylene-diene terpolymer, butyl rubber, poly(isobutylene-co-para-methylstyrene) and poly(isobutylene-co-para-methylstyrene-co-isoprene) terpolymer.