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    PHENYLBORONIC ACID COMPOUND, MODIFIED POLYMER, POLYMER COMPOSITION, AND TIRE
    1.
    发明公开
    PHENYLBORONIC ACID COMPOUND, MODIFIED POLYMER, POLYMER COMPOSITION, AND TIRE 审中-公开

    公开(公告)号：EP4316868A1

    公开(公告)日：2024-02-07

    申请号：EP21937959.1

    申请日：2021-10-25

    申请人： Sumitomo Rubber Industries, Ltd.

    发明人： JIANG, Lan

    IPC分类号： B60C1/00 ,  C07F5/02 ,  C08C19/42 ,  C08F36/04 ,  C08L15/00

    摘要： Provided are a phenylboronic acid compound that can provide a polymer with the ability to undergo a reversible change in physical properties in response to water, a polymer that exhibits a reversible change in physical properties in response to water, and a polymer composition and a tire each containing the polymer. The present invention relates to a phenylboronic acid compound represented by the following Formula (1-1):

    wherein R 21 and R 22 are the same or different and each represent an optionally substituted divalent hydrocarbon group that optionally contains a heteroatom, R 23 to R 25 are the same or different and each represent a hydrogen atom or an optionally substituted monovalent hydrocarbon group that optionally contains a heteroatom, and m represents an integer of 1 to 5.

    RUBBER COMPOSITION FOR TIRE TREAD AND PNEUMATIC TIRE
    3.
    发明公开
    RUBBER COMPOSITION FOR TIRE TREAD AND PNEUMATIC TIRE 审中-公开

    公开(公告)号：EP3795626A1

    公开(公告)日：2021-03-24

    申请号：EP19802898.7

    申请日：2019-05-15

    申请人： The Yokohama Rubber Co., Ltd.

    发明人： SATO, Masaki ,  KAZARIYA, Ayaki ,  SAWA, Hideaki ,  ASHIURA, Makoto

    IPC分类号： C08L15/00 ,  B60C1/00 ,  C08C19/42 ,  C08F236/04 ,  C08F297/02 ,  C08K3/36 ,  C08K5/5415 ,  C08L7/00 ,  C08F2/14

    摘要： A rubber composition for a tire tread which has excellent rolling performance when used in a tire and excellent wear resistance when used in a tire, and great breaking elongation when used in a tire; and a pneumatic tire including the rubber composition for a tire tread, are provided. The rubber composition for a tire tread of the present invention contains: a conjugated diene rubber containing 10 mass% or greater of a specific conjugated diene rubber produced by a method for producing a conjugated diene rubber including specific steps and 15 mass% or greater of natural rubber; silica; and a silane coupling agent, a content of the silica being 30 parts by mass or greater per 100 parts by mass of the conjugated diene rubber, and a content of the silane coupling agent being from 3 to 30 mass% with respect to the content of the silica.

    Polymere, die durch funktionelle Gruppen modifiziert sind
    8.
    发明公开
    Polymere, die durch funktionelle Gruppen modifiziert sind 审中-公开
    Polymere，die durch funktionelle Gruppen modifiziert sind

    公开(公告)号：EP1319673A1

    公开(公告)日：2003-06-18

    申请号：EP02026830.6

    申请日：2002-11-29

    申请人： BAYER AG

    发明人： Grün Michael, Dr. ,  Braubach, Wilfried

    IPC分类号： C08F8/30 ,  C08F8/42 ,  C08C19/42

    CPC分类号： C08F8/42 ,  C08C19/44 ,  C08F8/30

    摘要： Gegenstand der vorliegenden Erfindung sind durch funktionelle Endgruppen modifizierte Polymere auf Basis von konjugierten Dienen oder von konjugierten Dienen und vinylaromatischen Verbindungen, ein Verfahren zu deren Herstellung sowie deren Verwendung zur Herstellung von Kautschukformkörpern aller Art, insbesondere zur Herstellung von Reifen und Reifenbauteilen, wie Reifenlaufflächen.

    摘要翻译： 具有衍生自氨基甲酰氯（I）或环氧硅氧烷（II）的末端官能团的改性共轭二烯或二烯/乙烯基芳族聚合物是新的。 具有重均分子量（Mw）大于10000且多分散性（Mn / Mw）为1.3-5，具有40-100摩尔％末端官能团的改性共轭二烯或二烯/乙烯基芳族聚合物衍生 式（I）的氨基甲酰氯或式（II）的环氧硅氧烷是新的：R1，R2 = H，1-15C烷基，6-10C芳基，5-10C环烷基或（6-10C） 芳基（1-4C）烷基或NR1R2是具有2-10个C原子和1-3个杂原子的环; R3-R7 = H，1-15C烷基，6-10C芳基，5-10C环烷基，（6-10C）芳基（1-4C）烷基或（CH2）pO（CH2）oQ; Q =环氧乙烷基; m，n，o，p = 1-12。 还包括一种独立的权利要求，用于通过使偶联二烯和任选的乙烯基芳族化合物在惰性有机溶剂中在碱（ne earth）金属催化剂存在下反应制备改性聚合物，并使产物与（I）或 （II），每摩尔引发剂为0.1-10摩尔。

    Modified diene polymer rubbers
    10.
    发明公开
    Modified diene polymer rubbers 失效
    改性二烯类聚合物橡胶。

    公开(公告)号：EP0493364A2

    公开(公告)日：1992-07-01

    申请号：EP92103359.3

    申请日：1989-02-23

    申请人： Sumitomo Chemical Industries Ltd.

    发明人： Imai, Akio ,  Seki, Tomoaki

    IPC分类号： C08C19/42

    CPC分类号： C08C19/42

    摘要： A modified diene polymer rubber having an increased impact resilience and a reduced hardness at low temperatures and useful as rubber materials for automobile tires and other industries, which is prepared by a process comprising the steps of producing an alkali metal-containing conjugated diene polymer, and reacting the alkali metal-containing polymer with a modifier selected from aminovinylsilane compounds of the formula:
    wherein R 4 to R 8 are independently an alkyl group, said alkali metal-containing diene polymer being prepared by a living anionic polymerization using an alkali metal-based catalyst or by an addition reaction of a diene polymer having conjugated diene units and an alkali metal-based catalyst in a hydrocarbon solvent. The modified diene polymers can be incorporated with usual rubber additives and with or without other rubbers to provide rubber compositions for various purposes, and the cured products show an increased impact resilience and a reduced hardness at low temperatures.