公开(公告)号：US20240383761A1

公开(公告)日：2024-11-21

申请号：US18789072

申请日：2024-07-30

Applicant: RHODIA OPERATIONS

Inventor： Frédéric Colbeau-Justin ,  Cédric Boivin ,  Cyril Chomette ,  Thomas Chaussee ,  Laurent Guy

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

公开(公告)号：US11084729B2

公开(公告)日：2021-08-10

申请号：US15122098

申请日：2015-02-26

Applicant: RHODIA OPERATIONS

Inventor： Cédric Boivin ,  Laurent Guy ,  Eric Perin ,  Kilani Lamiri

IPC: C01B33/193 ,  C09C1/30 ,  B60C1/00 ,  C08K3/36

Abstract: The invention relates to a process for preparing a precipitated silica, to precipitated silicas, and to uses thereof. The process of the invention generally includes reacting a silicate with an acidifying agent, so as to obtain a suspension of precipitated silica; filtering the precipitated silica to obtain a filter cake; subjecting the filter cake to a liquefaction operation to form a second filter cake; and drying the second filter cake. In the process of the invention, at least one polycarboxylic acid is added to the filter cake, during or after the liquefaction operation.

公开(公告)号：US10577476B2

公开(公告)日：2020-03-03

申请号：US14424353

申请日：2013-09-02

Applicant: RHODIA OPERATIONS

Inventor： Cédric Boivin ,  Laurent Guy ,  Eric Perin ,  Kilani Lamiri

IPC: C08K3/36 ,  C01B33/193 ,  C08K3/22 ,  C08K5/092 ,  C08K5/548 ,  C08L9/06 ,  C09C1/30 ,  C08K5/1539

Abstract: The invention relates to a novel process for the preparation of a precipitated silica, in which: a silicate is reacted with an acidifying agent, so as to obtain a suspension of precipitated silica, said suspension of precipitated silica is filtered, so as to obtain a filtration cake, said filtration cake is subjected to a liquefaction operation comprising the addition of an aluminum compound, after the liquefaction operation, a drying stage is carried out, characterized in that a mixture of polycarboxylic acids is added to the filtration cake, during or after the liquefaction operation. It also relates to novel precipitated silicas and to their uses.

公开(公告)号：US20250051173A1

公开(公告)日：2025-02-13

申请号：US18723051

申请日：2022-12-21

Applicant: Rhodia Operations

Inventor： Cédric Feral-Martin ,  Emmanuelle Allain Najman ,  Pascaline Lauriol-Garbey ,  Thomas Chaussee ,  Laurent Guy

IPC: C01B33/193 ,  B60C1/00 ,  C08K3/36 ,  C08L9/06

Abstract: The present invention relates to precipitated silica having small sized particles and to a process for its manufacture. The invention further relates to the use of precipitated silica as reinforcing filler in polymeric compositions, preferably elastomeric compositions.

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：US11407881B2

公开(公告)日：2022-08-09

申请号：US15118683

申请日：2015-02-12

Applicant: RHODIA OPERATIONS

Inventor： Cédric Boivin ,  Laurent Guy ,  Eric Perin ,  Kilani Lamiri

IPC: C08K3/36 ,  C04B26/02 ,  C09C1/30 ,  C01B33/193 ,  C04B14/06 ,  C01B33/187 ,  C04B111/60

Abstract: The invention relates to a process for the preparation of a novel precipitated silica, wherein: a silicate is reacted with an acidifying agent, so as to obtain a silica suspension; said silica suspension is filtered, so as to obtain a filter cake; said filter cake is subjected to a liquefaction operation, optionally in the presence of an aluminium compound; wherein at least one polycarboxylic acid is added to the filter cake, during or after the liquefaction operation. It also relates to a novel precipitated silica and to its uses.

公开(公告)号：US09862810B2

公开(公告)日：2018-01-09

申请号：US14424368

申请日：2013-09-02

Applicant: RHODIA OPERATIONS

Inventor： Cèdric Boivin ,  Laurent Guy ,  Eric Perin ,  Kilani Lamiri

IPC: C08K5/092 ,  C01B33/12 ,  C08K3/22 ,  C08K3/36 ,  C01B33/193

CPC classification number: C08K5/092 ,  C01B33/128 ,  C01B33/193 ,  C01P2004/61 ,  C01P2006/12 ,  C01P2006/16 ,  C08K3/22 ,  C08K3/36 ,  C08K2003/2227

Abstract: The present disclosure relates to a novel process for the preparation of a precipitated silica, in which: a silicate is reacted with at least one acidifying agent, so as to obtain a suspension of precipitated silica, said suspension of precipitated silica is filtered, so as to obtain a filtration cake, said filtration cake is subjected to a liquefaction operation comprising the addition of an aluminum compound, after the liquefaction operation, a drying stage is carried out, characterized in that methylglutaric acid is added to the filtration cake, during or after the liquefaction operation. It also relates to novel precipitated silicas and to their uses.

公开(公告)号：US09758645B2

公开(公告)日：2017-09-12

申请号：US14439107

申请日：2013-10-29

Applicant: RHODIA OPERATIONS

Inventor： Laurent Guy ,  Dominique Dupuis ,  Emmanuelle Allain

IPC: C08L7/00 ,  C08K5/53

CPC classification number: C08L7/00 ,  C08K5/53 ,  C08K13/02 ,  C08L9/00 ,  C08L2201/02 ,  C08L19/006

Abstract: The invention concerns the combined use, in an elastomer composition preferably comprising an isoprene elastomer, a precipitated silica containing titanium and a specific conjugated diene compound, such as a conjugated diene phosphonate or phosphinate compound. It also concerns the elastomer compositions obtained and the items produced from said compositions.

公开(公告)号：US20150284546A1

公开(公告)日：2015-10-08

申请号：US14439107

申请日：2013-10-29

Applicant: RHODIA OPERATIONS

Inventor： Laurent Guy ,  Dominique Dupuis ,  Emmanuelle Allain

IPC: C08L7/00

CPC classification number: C08L7/00 ,  C08K5/53 ,  C08K13/02 ,  C08L9/00 ,  C08L2201/02 ,  C08L19/006

Abstract: The invention concerns the combined use, in an elastomer composition preferably comprising an isoprene elastomer, a precipitated silica containing titanium and a specific conjugated diene compound, such as a conjugated diene phosphonate or phosphinate compound. It also concerns the elastomer compositions obtained and the items produced from said compositions.

Abstract translation: 本发明涉及组合使用的弹性体组合物，优选包括异戊二烯弹性体，含钛的沉淀二氧化硅和特定共轭二烯化合物如共轭二烯膦酸盐或次膦酸盐化合物。 它还涉及获得的弹性体组合物和由所述组合物产生的物品。