公开(公告)号：US20210387858A1

公开(公告)日：2021-12-16

申请号：US17291027

申请日：2019-11-06

Applicant: RHODIA OPERATIONS

Inventor： Frédéric COLBEAU-JUSTIN ,  Emmanuelle ALLAIN NAJMAN ,  Pascaline LAURIOL-GARBEY

IPC: C01B33/193 ,  C08K3/36 ,  B01J21/08 ,  B01J20/10 ,  A61L15/18

Abstract: Precipitated silica having large median particle size for use as reinforcing filler in elastomeric compositions as well as its method of manufacture. In particular, a precipitated silica characterised by a CTAB surface area SCTAB in the range from 70 to 350 m2/g; an amount WM of at least one metal M selected from elements of groups 3, 4 and 5 of at least 0.1 mol %; and a median particle size d50, measured by centrifugal sedimentation, such that: |d50|≥183×|RION|×|WM|−0.67×|SCTAB|+233 (I) wherein |d50| represents the numerical value of median particle size d50 measured by centrifugal sedimentation and expressed in nm; |RION|, the numerical value of the ionic radius of metal M expressed in nm; |SCTAB|, the numerical value of the CTAB surface area SCTAB expressed in m2/g; and |WM|, the numerical value of the percentage molar amount of the metal WM.

公开(公告)号：US20210024755A1

公开(公告)日：2021-01-28

申请号：US17043741

申请日：2019-04-11

Applicant: RHODIA OPERATIONS

Inventor： Cédric FERAL-MARTIN ,  Laure BERTRY ,  Emmanuelle ALLAIN NAJMAN

IPC: C09C1/30 ,  C01B33/193 ,  C04B14/06 ,  C04B20/02 ,  C08K3/36 ,  C08K9/04 ,  D21H17/68 ,  D21H27/00

Abstract: A precipitated silica suitable for thermal insulation applications and a process for its manufacture.

公开(公告)号：US20200079654A1

公开(公告)日：2020-03-12

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

Abstract: Precipitated silica having a broad particle size distribution and large median particle size as well as its method of manufacture.