公开(公告)号：US11554963B2

公开(公告)日：2023-01-17

申请号：US16611163

申请日：2018-05-03

Applicant: RHODIA OPERATIONS

Inventor： Emmanuelle Allain Najman ,  Cédric Feral-Martin ,  Pascaline Garbey ,  Laurent Guy ,  Sylvaine Neveu ,  Caroline Fayolle

IPC: C01B33/193 ,  B01J21/08

Abstract: A precipitated silica characterised by the presence of specific acid sites on its surface and a process for its manufacture.

公开(公告)号：US20210087068A1

公开(公告)日：2021-03-25

申请号：US17111206

申请日：2020-12-03

Applicant: RHODIA OPERATIONS

Inventor： Emmanuelle Allain Najman ,  Cédric Feral-Martin ,  Pascaline Garbey ,  Laurent Guy ,  Sylvaine Neveu ,  Caroline Fayolle

IPC: C01B33/193

Abstract: A precipitated silica characterised by the presence of specific acid sites on its surface and a process for its manufacture.

公开(公告)号：US11958980B2

公开(公告)日：2024-04-16

申请号：US16772146

申请日：2018-12-20

Applicant: RHODIA OPERATIONS

Inventor： Emmanuelle Allain Najman ,  Pascaline Garbey ,  Cédric Feral-Martin ,  Laure Bertry ,  Laurent Guy ,  Thomas Chaussee ,  Stéphanie Croyeau

IPC: C09C1/30 ,  C08K3/36 ,  C08K9/04

CPC classification number: C09C1/3063 ,  C08K3/36 ,  C08K9/04 ,  C01P2006/12 ,  C08K2201/006

Abstract: A chemically modified precipitated silica characterised by the presence of alkyl moieties chemically bound to the silica and a process for its manufacture.

公开(公告)号：US11884551B2

公开(公告)日：2024-01-30

申请号：US16611157

申请日：2018-05-03

Applicant: RHODIA OPERATIONS

Inventor： Emmanuelle Allain Najman ,  Fabien Stocklouser ,  Pascaline Garbey ,  Caroline Fayolle ,  Sylvaine Neveu ,  Laurent Guy

IPC: C01B33/193 ,  B01J21/08 ,  B01J35/10 ,  C08K3/36

CPC classification number: C01B33/193 ,  B01J21/08 ,  B01J35/1014 ,  B01J35/1019 ,  C08K3/36 ,  C01P2002/54 ,  C01P2004/51 ,  C01P2006/12 ,  C01P2006/16 ,  C08K2201/005 ,  C08K2201/006

Abstract: A precipitated silica having a broad particle size distribution and large median particle size as well as its method of manufacture is provided. The precipitated silica has a CTAB surface area SCTAB in the range from 40 to 300 m2/g, a difference between BET surface area SBET and CTAB surface area SCTAB of at least 35 m2/g, a width of the particle size distribution Ld, measured by centrifugal sedimentation, of at least 1.5, an amount of aluminium WA1 in the range from 0.5 to 7.0 wt %, and a median particle size d50, measured by centrifugal sedimentation, such that for a given value of CTAB surface area SCTAB and amount of aluminium WAl, parameter A, defined by the following equation: A=|d50|+0.782×|SCTAB|−8.524×|WAl|.

公开(公告)号：US20220235200A1

公开(公告)日：2022-07-28

申请号：US17722188

申请日：2022-04-15

Applicant: RHODIA OPERATIONS

Inventor： Pascaline Garbey ,  Philippe Marion ,  Matthieu Corbet ,  Frédéric Colbeau-Justin ,  Thomas Galeandro-Diamant

IPC: C08K9/06 ,  C08L25/10

Abstract: A modified silica comprising organic molecules absorbed on the surface of a precipitated silica is provided. The modified silica is particularly suitable for use as filler in elastomeric mixtures as it provides improvement in the processing of the silica/elastomer mixtures. A process for preparing the precipitated silica is also provided.