Pyrogenically produced silicon dioxide powder and silicone sealing compound containing this powder
    31.
    发明申请
    Pyrogenically produced silicon dioxide powder and silicone sealing compound containing this powder 有权
    热解产生的二氧化硅粉末和含有这种粉末的硅氧烷密封化合物

    公开(公告)号:US20060155042A1

    公开(公告)日:2006-07-13

    申请号:US11084022

    申请日:2005-03-21

    IPC分类号: C08K3/34

    摘要: Pyrogenically produced silicon dioxide powder in the form of aggregates of primary particles having a BET surface area of 150±15 m2/g, wherein the aggregates display an average surface area of 12000 to 20000 nm2, an average equivalent circle diameter (ECD) of 90 to 120 nm and an average circumference of 1150 to 1700 nm. It is produced by a pyrogenic process in which silicon tetrachloride and a second silicon component comprising H3SiCl, H2SiCl2, HSiCl3, CH3SiCl3, (CH3)2SiCl2, (CH3)3SiCl and/or (n-C3H7)SiCl3 are mixed with primary air and a combustion gas and burnt into a reaction chamber, secondary air also being introduced into the reaction chamber, and the feed materials being chosen such that an adiabatic flame temperature of 1670 to 1730° C. is obtained. Silicone sealing compound containing the pyrogenically produced silicon dioxide powder.

    摘要翻译: 以BET表面积为150±15m 2 / g的一次粒子的聚集体形式的热解生成的二氧化硅粉末,其中聚集体的平均表面积为12000〜20000nm, 2,平均当量圆直径(ECD)为90〜120nm,平均圆周为1150〜1700nm。 它是通过热原法制造的,其中四氯化硅和包含H 3 SiCl,H 2 SiCl 2,HSiCl 3>与一次空气和燃烧气体混合并燃烧到反应室中,二次空气也被引入反应室,并且进料选择为使得绝热火焰温度为1670至1730℃ C.得到。 含有热解法生产的二氧化硅粉末的硅酮密封剂。

    COMPOSITION COMPRISING MODIFIED SILICA AND SILICONE RUBBER COMPRISING THIS COMPOSITION
    34.
    发明申请
    COMPOSITION COMPRISING MODIFIED SILICA AND SILICONE RUBBER COMPRISING THIS COMPOSITION 审中-公开
    包含改性二氧化硅的组合物和包含该组合物的硅橡胶

    公开(公告)号:US20150368440A1

    公开(公告)日:2015-12-24

    申请号:US14766039

    申请日:2013-05-23

    IPC分类号: C08K9/06 C09C1/30 C07F7/18

    摘要: Process for producing a composition comprising at least one surface-modified silica, where a) a hydrophilic silica b) is first brought into contact with from 5 to 40 parts by weight per 100 parts by weight of hydrophilic silica of an α,ω-hydroxy-terminated oligodimethylsiloxane with an average molar mass of from 166 to 800 g/mol, where the contact takes place at temperatures of from −10° C. to 50° C., and c) then allowing the resultant reaction mixture to stand for at least 3 days at temperatures of from −10° C. to 50° C.

    摘要翻译: 制备包含至少一种表面改性二氧化硅的组合物的方法,其中a)亲水性二氧化硅b)首先与每100重量份的α,ω-羟基的亲水性二氧化硅接触5至40重量份 平均摩尔质量为166至800g / mol的终止的低聚二甲基硅氧烷,其中接触在-10℃至50℃的温度下进行,和c)然后使得到的反应混合物放置在 在-10℃至50℃的温度下至少3天。

    Surface-modified silicas
    38.
    发明授权
    Surface-modified silicas 有权
    表面改性二氧化硅

    公开(公告)号:US07972431B2

    公开(公告)日:2011-07-05

    申请号:US12441992

    申请日:2007-09-11

    IPC分类号: C04B14/04

    摘要: Surface-modified silicas Surface-modified, highly structured, potassium oxide-doped silicas, characterized by BET surface area, m2/g: 25-400 average primary particle size, nm: 5-50 pH: 3-10 carbon content, % by weight: 0.1-10 potassium oxide content, % by weight: 0.000001-40 are prepared by subjecting a potassium oxide-doped silica to surface modification. It can be used as a filler in silicone rubber compositions.

    摘要翻译: 表面改性二氧化硅表面改性,高度结构化的氧化钾掺杂二氧化硅,其特征在于BET表面积,m2 / g:25-400平均一次粒径,nm:5-50 pH:3-10碳含量,% 重量:0.1-10氧化钾含量,重量%:0.000001-40是通过使掺杂氧化钾的二氧化硅进行表面改性来制备的。 它可以用作硅橡胶组合物中的填料。

    SURFACE-MODIFIED SILICAS
    40.
    发明申请
    SURFACE-MODIFIED SILICAS 有权
    表面改性硅

    公开(公告)号:US20100022694A1

    公开(公告)日:2010-01-28

    申请号:US12441992

    申请日:2007-09-11

    IPC分类号: C08K3/22 C04B16/08

    摘要: Surface-modified silicas Surface-modified, highly structured, potassium oxide-doped silicas, characterized by BET surface area, m2/g: 25-400 average primary particle size, nm: 5-50 pH: 3-10 carbon content, % by weight: 0.1-10 potassium oxide content, % by weight: 0.000001-40 are prepared by subjecting a potassium oxide-doped silica to surface modification. It can be used as a filler in silicone rubber compositions.

    摘要翻译: 表面改性二氧化硅表面改性,高度结构化的氧化钾掺杂二氧化硅,其特征在于BET表面积,m2 / g:25-400平均一次粒径,nm:5-50 pH:3-10碳含量,% 重量:0.1-10氧化钾含量,重量%:0.000001-40是通过使掺杂氧化钾的二氧化硅进行表面改性来制备的。 它可以用作硅橡胶组合物中的填料。