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    TIRE HAVING AN IMPROVED TREAD
    1.
    发明申请
    TIRE HAVING AN IMPROVED TREAD 有权

    公开(公告)号：US20220371370A1

    公开(公告)日：2022-11-24

    申请号：US17771072

    申请日：2020-10-15

    Applicant: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN

    Inventor： MIGUEL FERNANDEZ ,  KARINE LONGCHAMBON ,  REGIS SCHACH ,  PHILIPPE LABRUNIE ,  ALEXANDRE TOBIE

    IPC: B60C11/00

    Abstract: A tire comprises an outer strip (2) having a tread (21). The outer strip (2) has a central part and two axially outer parts and comprises at least two rubber compounds (M1, M2) making up at least 90% of the volume of the outer strip (2). The first compound (M1) is radially on the outside of the second compound (M2), which makes up at least 60% of the axially outer parts and being disposed in a layer that is substantially continuous from one axially outer part to the other, said layer having a minimum thickness at least equal to 0.3 mm. The compound M1 has a modulus G* that is greater than 1.35 times and less than 3 times that of the compound M2. The compound M1 has a dynamic loss at 0° C. greater than 0.5 and the compound M2 has a dynamic loss at 23° C. less than 0.3.

    TIRE TREAD, THE CROSSLINKING SYSTEM OF WHICH IS BASED ON ORGANIC PEROXIDE
    2.
    发明申请
    TIRE TREAD, THE CROSSLINKING SYSTEM OF WHICH IS BASED ON ORGANIC PEROXIDE 有权

    公开(公告)号：US20210087370A1

    公开(公告)日：2021-03-25

    申请号：US16954356

    申请日：2018-12-12

    Applicant: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN

    Inventor： PHILIPPE LABRUNIE

    IPC: C08L9/06 ,  B60C1/00 ,  B60C11/00

    Abstract: A tire tread comprises a rubber composition based on at least from 10 to 90 phr of a first diene elastomer, the first diene elastomer being a polybutadiene-based elastomer, modified with a functional group capable of interacting with silica as reinforcing filler, the first diene elastomer exhibiting a glass transition temperature of less than −80° C.; from 10 to 90 phr of a second diene elastomer, the second diene elastomer being a styrene/butadiene copolymer exhibiting a glass transition temperature of greater than −80° C.; from 90 to 150 phr of silica as reinforcing filler; a coupling agent; a plasticizing system comprising a plasticizing resin exhibiting a glass transition temperature of greater than 20° C.; and a crosslinking system based on organic peroxide; the total content of the first diene elastomer and of the second diene elastomer in the composition being within a range extending from 80 to 100 phr.

    TIRE HAVING AN IMPROVED TREAD
    4.
    发明申请
    TIRE HAVING AN IMPROVED TREAD 有权

    公开(公告)号：US20220371371A1

    公开(公告)日：2022-11-24

    申请号：US17771091

    申请日：2020-10-15

    Applicant: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN

    Inventor： MIGUEL FERNANDEZ ,  REGIS SCHACH ,  PHILIPPE LABRUNIE ,  KARINE LONGCHAMBON ,  ALEXANDRE TOBIE

    IPC: B60C11/00

    Abstract: A tire comprises an outer strip (2) having a tread (21). The outer strip (2) has a central part and two axially outer parts and comprises at least two rubber compounds (M1, M2) making up at least 90% of the volume of the outer strip (2). The first compound (M1) is radially outside of the second compound (M2), which makes up at least 60% of the axially outer parts and being disposed in a layer that is substantially continuous from one axially outer part to the other, said layer having a minimum thickness at least equal to 0.3 mm. The compound M1 has a modulus G* that is greater than 1.35 times and less than 3 times that of the compound M2. The compound M1 has a dynamic loss at 0° C. greater than 0.5 and the compound M2 has a dynamic loss at 23° C. less than 0.3.

    TIRE TREAD COMPRISING A CROSSLINKING SYSTEM BASED ON ORGANIC PEROXIDE
    5.
    发明申请
    TIRE TREAD COMPRISING A CROSSLINKING SYSTEM BASED ON ORGANIC PEROXIDE 有权

    公开(公告)号：US20210213781A1

    公开(公告)日：2021-07-15

    申请号：US17056195

    申请日：2019-04-25

    Applicant: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN

    Inventor： PHILIPPE LABRUNIE

    IPC: B60C1/00 ,  C08L9/00 ,  C08K3/36 ,  C08K3/04 ,  C08K5/14 ,  C08K5/5465

    Abstract: A tire tread comprises a rubber composition based on at least from 50 to 100 phr of a first diene elastomer, the first diene elastomer being a polybutadiene-based elastomer, modified with a functional group capable of interacting with silica as reinforcing filler; optionally from 0 to 50 phr of a second diene elastomer; at least 20 phr of carbon black; less than 40 phr of silica as reinforcing filler; a coupling agent; a plasticizing system comprising a plasticizing resin exhibiting a glass transition temperature of greater than 20° C.; and a crosslinking system based on organic peroxide; the total content of the first diene elastomer and of the second diene elastomer in the composition being within a range extending from 80 to 100 phr.

    TIRE TREAD, THE CROSSLINKING SYSTEM OF WHICH IS BASED ON ORGANIC PEROXIDE
    6.
    发明申请
    TIRE TREAD, THE CROSSLINKING SYSTEM OF WHICH IS BASED ON ORGANIC PEROXIDE 有权

    公开(公告)号：US20210079200A1

    公开(公告)日：2021-03-18

    申请号：US16954403

    申请日：2018-12-12

    Applicant: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN

    Inventor： PHILIPPE LABRUNIE

    IPC: C08L9/06 ,  B60C1/00 ,  B60C11/00

    Abstract: A tire tread comprises a rubber composition based on at least from 50 to 100 phr of a first diene elastomer, the first diene elastomer being a polybutadiene-based elastomer, modified with a functional group capable of interacting with silica as reinforcing filler; optionally from 0 to 50 phr of a second diene elastomer; between 40 and 90 phr of silica as reinforcing filler; a coupling agent; a plasticizing system comprising a plasticizing resin exhibiting a glass transition temperature of greater than 20° C.; and a crosslinking system based on organic peroxide; the total content of the first diene elastomer and of the second diene elastomer in the composition being within a range extending from 80 to 100 phr.

    TIRE TREAD
    10.
    发明申请
    TIRE TREAD 审中-公开

    公开(公告)号：US20160319116A1

    公开(公告)日：2016-11-03

    申请号：US15103139

    申请日：2014-12-09

    Applicant: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN ,  MICHELIN RECHERCHE ET TECHNIQUE S.A.

    Inventor： PHILIPPE LABRUNIE ,  BENOÏT DE GAUDEMARIS

    IPC: C08L15/00 ,  B60C1/00

    CPC classification number: C08L15/00 ,  B60C1/0016 ,  C08C19/22 ,  C08C19/25 ,  C08C19/44 ,  C08K3/36 ,  C08K5/548 ,  C08L23/20 ,  C08L91/00 ,  C08L93/00 ,  Y02T10/862

    Abstract: The present invention relates to a tire tread that comprises a rubber composition based on at least: an elastomer matrix comprising more than 50 wt % of a first diene elastomer bearing a silanol function and a pendent amine function; a silica at a level between 120 and 140 phr; a coupling agent; and a plasticizer system comprising a hydrocarbon-containing resin having a Tg above 20° C. according to a content A ranging from 5 to 60 phr, a hydrocarbon-containing resin having a Tg above 20° C. and a liquid plasticizer according to a content B ranging from 0 to 60 phr, a liquid plasticizer, it being understood that the total level A+B is at least equal to 60 phr, preferably ranging from 60 to 90 phr. The tread according to the invention makes it possible to improve the compromise between wet grip and dry grip of a tire with low rolling resistance.

    Abstract translation: 本发明涉及一种轮胎胎面，其包括基于至少基于包含大于50重量％的具有硅烷醇官能团和侧挂胺官能团的第一二烯弹性体的弹性体基质的橡胶组合物; 水平在120和140phr之间的二氧化硅; 偶联剂; 和含有Tg高于20℃的含烃树脂的增塑剂体系，其含量A为5至60phr，Tg高于20℃的含烃树脂和根据 含量B范围为0至60phr，一种液体增塑剂，应理解总含量A + B至少等于60phr，优选60至90phr。 根据本发明的胎面使得可以改善具有低滚动阻力的轮胎的湿抓地力和干抓地力之间的折衷。

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