Invention Grant
- Patent Title: Precipitated silica and process for its manufacture
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Application No.: US17291030Application Date: 2019-11-06
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Publication No.: US12134564B2Publication Date: 2024-11-05
- Inventor: Cyril Chomette , Frédéric Colbeau-Justin , Fabien Stocklouser , Cédric Boivin , Thomas Chaussee
- Applicant: RHODIA OPERATIONS
- Applicant Address: FR Aubervilliers
- Assignee: RHODIA OPERATIONS
- Current Assignee: RHODIA OPERATIONS
- Current Assignee Address: FR Aubervilliers
- Agency: Osha Bergman Watanabe & Burton LLP
- Priority: EP18306462 20181108
- International Application: PCT/EP2019/080397 WO 20191106
- International Announcement: WO2020/094717 WO 20200514
- Main IPC: C01B33/193
- 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.
an aluminium content not exceeding 4500 ppm.
Public/Granted literature
- US20210371289A1 PRECIPITATED SILICA AND PROCESS FOR ITS MANUFACTURE Public/Granted day:2021-12-02
Information query
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