发明申请
- 专利标题: PROCESS FOR THE PREPARATION OF PRECIPITATED SILICAS, PRECIPITATED SILICAS AND THEIR USES, IN PARTICULAR FOR THE REINFORCEMENT OF POLYMERS
- 专利标题(中): 制备降解硅,沉淀硅和其用途的方法,特别是聚合物增强
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申请号: US15118683申请日: 2015-02-12
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公开(公告)号: US20170051126A1公开(公告)日: 2017-02-23
- 发明人: Cédric BOIVIN , Laurent GUY , Eric PERIN , Kilani LAMIRI
- 申请人: RHODIA OPERATIONS
- 优先权: EP14305195.1 20140214; EP14305483.1 20140402
- 国际申请: PCT/EP2015/052916 WO 20150212
- 主分类号: C08K3/36
- IPC分类号: C08K3/36 ; C09C1/30 ; C01B33/187
摘要:
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.
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