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公开(公告)号：US12145853B2
公开(公告)日：2024-11-19
申请号：US17291027
申请日：2019-11-06
Applicant: RHODIA OPERATIONS
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.
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公开(公告)号：US12134564B2
公开(公告)日：2024-11-05
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 , B60C1/00 , C08K3/36 , C08L101/00 , B82Y40/00
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：US12077444B2
公开(公告)日：2024-09-03
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: C08K3/36 , C01B33/193 , C08L9/06 , C08L23/22 , B60C1/00
CPC classification number: C01B33/193 , C08L9/06 , C08L23/22 , B60C1/0016 , B60C2200/04 , C01P2004/51 , C01P2006/12 , C08K3/36
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.
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公开(公告)号：US11702345B2
公开(公告)日：2023-07-18
申请号：US16772149
申请日：2018-12-20
Applicant: RHODIA OPERATIONS
Inventor： Frédéric Colbeau-Justin , Marc-David Braida , Mathilde Mignard
CPC classification number: C01B33/12 , C08K5/19 , B82Y40/00 , C01P2004/62 , C01P2004/64
Abstract: Stable suspensions of silica particles in water-immiscible polar organic liquids are provided.
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Patent Agency Ranking
公开(公告)号：US12291459B2
公开(公告)日：2025-05-06
申请号：US17618904
申请日：2020-06-23
Applicant: RHODIA OPERATIONS
Inventor： Pascaline Garbey , Frédéric Colbeau-Justin , Laure Bertry
IPC: C01B33/193
Abstract: A chemically modified precipitated silica characterised by the presence of methyl moieties chemically bound to the silica and a process for its manufacture.
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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
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.
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公开(公告)号：US20250026649A1
公开(公告)日：2025-01-23
申请号：US18905025
申请日：2024-10-02
Applicant: RHODIA OPERATIONS
Inventor： Cyril Chomette , Frédéric Colbeau-Justin , Fabien Stocklouser , Cédric Boivin , Thomas Chaussee
IPC: C01B33/193 , B60C1/00 , B82Y40/00 , C08K3/36 , 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 ❘ "\[LeftBracketingBar]" d 50 ❘ "\[LeftBracketingBar]" > 25000 / ❘ "\[LeftBracketingBar]" S C T A B ❘ "\[RightBracketingBar]" ( 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.
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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.
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公开(公告)号：US20240182312A1
公开(公告)日：2024-06-06
申请号：US18553723
申请日：2022-04-01
Applicant: RHODIA OPERATIONS
Inventor： Cédric Feral-Martin , Pascaline Lauriol-Garbey , Caroline Fayolle , Frédéric Colbeau-Justin
CPC classification number: C01B33/18 , B29D30/00 , C08K3/36 , C01P2004/51 , C01P2006/10 , C01P2006/12 , C01P2006/22 , C08K2201/003 , C08K2201/006
Abstract: A precipitated silica characterised by low silanol ratio. The precipitated silica is in particularly suitable for use as filler in elastomeric mixtures.
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