发明申请
- 专利标题： PRECIPITATED SILICAS FOR STORAGE-STABLE RTV-1 SILICONE RUBBER FORMULATIONS WITHOUT STABILIZER
- 专利标题（中）： 用于储存稳定的RTV-1硅橡胶配方的稳定硅胶
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申请号： US12262684申请日： 2008-10-31
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公开(公告)号： US20090137732A1公开(公告)日： 2009-05-28
- 发明人: Christian Panz , Helga Obladen , Karl Meier , Markus Ruf , Rene Allerdisse , Dieter Kuhn , Aziz El Moussaoui , Mario Scholz , Michael Kempf
- 申请人： Christian Panz , Helga Obladen , Karl Meier , Markus Ruf , Rene Allerdisse , Dieter Kuhn , Aziz El Moussaoui , Mario Scholz , Michael Kempf
- 申请人地址： DE Essen
- 专利权人： EVONIK DEGUSSA GmbH
- 当前专利权人： EVONIK DEGUSSA GmbH
- 当前专利权人地址： DE Essen
- 优先权： DE102007052269.1 20071102
- 主分类号： C08K3/36
- IPC分类号： C08K3/36 ; C01B33/12 ; C01B33/18
摘要：
A precipitated silica having an SiOHisolated absorbance ratio of greater than or equal to 1.5, a silanol group density of 1 to 3.0 SiOH/nm2, a modified tapped density of 1 to 50 g/l, and a pH of 3-5, when measured as a aqueous suspension of 5.00 g of the precipitated silica in 100 ml. of deionized water allows preparation of storage-stable RTV-1 silicone rubber formulations without stabilizer. A process for preparing the precipitated silica and its use in thickening sealants is provided.
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