公开(公告)号：US12024631B2

公开(公告)日：2024-07-02

申请号：US16772562

申请日：2018-12-13

Applicant: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN

Inventor： Benoit De Gaudemaris ,  Alain Hut ,  Laurent Petitjean

IPC: C08L9/06 ,  B60C1/00 ,  C08K3/04 ,  C08K5/01 ,  C08L7/00 ,  B60C11/00 ,  B60C11/03 ,  C08L25/06 ,  C08L25/16 ,  C08L97/02

CPC classification number: C08L9/06 ,  B60C1/0016 ,  C08K3/04 ,  C08K5/01 ,  C08L7/00 ,  B60C2011/0033 ,  B60C2011/0339 ,  B60C2011/0353 ,  B60C2011/0355 ,  C08K2201/006 ,  C08L25/06 ,  C08L25/16 ,  C08L97/02

Abstract: The tread of a civil engineering vehicle tire comprises a rubber composition based on at least one elastomer matrix comprising from 50 to 100 phr of a styrene-butadiene copolymer and from 0 to 50 phr of isoprene elastomer; a reinforcing filler comprising predominantly carbon black with CTAB specific surface area greater than or equal to 90 m2/g; from 1 to 30 phr of at least one hydrocarbon resin predominantly consisting of units derived from aromatic and cycloaliphatic monomers, having an aromatic proton content between 0 and 12%, an ethylenic proton content greater than 3%, a number-average molecular weight above 500 g/mol and a polydispersity index greater than 2; and a crosslinking system.

公开(公告)号：US10961374B2

公开(公告)日：2021-03-30

申请号：US16472671

申请日：2017-12-21

Applicant: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN

Inventor： Séverin Dronet ,  Laurent Petitjean ,  Marc Couty ,  Corentin Pavageau

IPC: C08L15/00 ,  B60C1/00 ,  B60C11/00

Abstract: A rubber composition based on at least an elastomer matrix is provided. The elastomer matrix comprises a first diene elastomer having a number-average molecular weight, Mn, of greater than or equal to 100 000 g/mol; a functionalized second diene elastomer bearing at the chain end a function capable of reacting with the surface of silica, said functionalized diene elastomer having a number-average molecular weight, Mn, of less than or equal to 80 000 g/mol: and a reinforcing inorganic filler, in an amount ranging from 55 phr to 200 phr. The elastomeric matrix allows good dispersion of the reinforcing inorganic filler. A finished or semi-finished article comprising such a composition, tire tread comprising such a composition, and a tire or semi-finished product comprising such a composition is also provided.