公开(公告)号：US20210371289A1

公开(公告)日：2021-12-02

申请号：US17291030

申请日：2019-11-06

Applicant: RHODIA OPERATIONS

Inventor： Cyril CHOMETTE ,  Frédéric COLBEAU-JUSTIN ,  Fabien STOCKLOUSER ,  Cédric BOIVIN ,  Thomas CHAUSSEE

IPC: C01B33/193 ,  C08K3/36 ,  B60C1/00 ,  C08L101/00

Abstract: A precipitated silica having large particle size for use in tire applications. In particular, a precipitated silica characterised by a CTAB surface area SCTAB equal to or greater than 160 m2/g; a median particle size d50, measured by centrifugal sedimentation, such that |d50|>25000/|SCTAB|  (I) wherein |d50| represents the numerical value of the median particle size d50 measured by centrifugal sedimentation and expressed in nm and |SCTAB| represents the numerical value of the CTAB surface area SCTAB expressed in m2/g; and an aluminium content not exceeding 4500 ppm.

公开(公告)号：US20210114889A1

公开(公告)日：2021-04-22

申请号：US17253197

申请日：2019-07-12

Applicant: RHODIA OPERATIONS

Inventor： Frédéric COLBEAU-JUSTIN ,  Cédric BOIVIN ,  Cyril CHOMETTE ,  Thomas CHAUSSEE ,  Laurent GUY

IPC: C01B33/193 ,  C08L9/06 ,  C08L23/22

Abstract: A precipitated silica for use in tire applications. In particular, a precipitated silica characterised by a CTAB surface area SCTAB greater than 140 m2/g; a width of the aggregate size distribution Ld, measured by centrifugal sedimentation, of at least 1.2; a pH of less than 5.5; and a carbon content of less than 1500 ppm.