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发明公开
CN106029567A 用于制备沉淀二氧化硅的新颖方法，新颖的沉淀二氧化硅及其用途，尤其用于增强聚合物 有权

用于制备沉淀二氧化硅的新颖方法，新颖的沉淀二氧化硅及其用途，尤其用于增强聚合物
摘要：
本发明涉及一种用于制备沉淀二氧化硅的新颖方法，该方法涉及以下步骤：‑使硅酸盐与酸化剂反应，以便获得沉淀二氧化硅的悬浮液，‑将所述沉淀二氧化硅的悬浮液过滤，以便获得滤饼，‑使所述滤饼经受散裂操作，‑在该散裂操作之后，进行干燥步骤，其特征在于在该散裂操作期间或之后，将至少一种多元羧酸添加到该滤饼中。本发明还涉及新颖的沉淀二氧化硅以及其用途。
摘要（英）：

The invention concerns a novel method for preparing a precipitated silica, involving the following steps: reacting a silicate with an acidifying agent in order to obtain a suspension of precipitated silica, filtering said suspension of precipitated silica, so as to obtain a filtration cake, subjecting said filtration cake to a spalling operation, after the spalling operation, carrying out a step of drying, characterised in that at least one polycarboxylic acid is added to the filtration cake during or after the spalling operation. It also concerns novel precipitated silicas and the uses of same.

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