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公开(公告)号：US4015031A
公开(公告)日：1977-03-29
申请号：US654707
申请日：1976-02-02
CPC分类号： C09C1/28 , C09C1/3081 , C01P2006/12
摘要： Finely divided hydrophobic silica or silicate is produced by treating the dry, moving particles with an organic silane at elevated temperature. The silica or silicate which had been prepared by wet precipitation or pyrogenically and which is in powdered form is heated to a temperature of about 200.degree. to 300.degree. C. with agitation and is brought to a fluidized condition and then is treated dropwise with an organosilane which is stable and boils below 300.degree. C.
摘要翻译： 通过在高温下用有机硅烷处理干燥的移动颗粒来制备细分疏水性二氧化硅或硅酸盐。 通过湿法沉淀或热解并且粉末形式制备的二氧化硅或硅酸盐在搅拌下加热至约200℃至300℃的温度，并进入流化状态，然后用有机硅烷 其稳定且沸点低于300℃
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2.发明授权Apparatus for the releasing of materials from voluminous precipitates or suspensions 失效用于从大量沉淀物或悬浮液中释放材料的装置
公开(公告)号：US3940252A
公开(公告)日：1976-02-24
申请号：US488152
申请日：1974-07-12
CPC分类号： C09C3/006 , B01D11/0242 , B01D11/0253 , B03B5/623 , C01P2006/40 , C01P2006/60
摘要： Voluminous precipitates or suspensions are contacted countercurrently with liquid purification or extraction agents that hold the continuously supplied precipitate or suspension in the upwardly flowing liquid in a kind of fluidized bed. A suitable apparatus is also described.
摘要翻译： 大量沉淀物或悬浮液与液体纯化或提取剂反向接触，液体净化或提取剂将持续供应的沉淀物或悬浮液保持在一种流化床中的向上流动的液体中。 还描述了合适的装置。
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3.发明授权Process for hydrophobization of finely divided silica and silicates using prepolycondensed organosilane 失效使用预缩聚的有机硅烷使细碎的二氧化硅和硅酸盐疏水化的方法
公开(公告)号：US4072796A
公开(公告)日：1978-02-07
申请号：US581890
申请日：1975-05-29
IPC分类号： C08K3/00 , C01B33/18 , C01B33/20 , C08K3/34 , C09C1/00 , C09C1/28 , C09C3/12 , C09D183/04 , B32B17/00
CPC分类号： C09C3/12 , C01P2006/10 , C01P2006/12 , Y10T428/2995
摘要： Finely divided hydrophobic silica and silicates are prepared by precipitating of alkali silicate solutions with mineral acids or metal salt solutions and treated with organohalosilanes. To the acid precipitation suspension recovered in known manner there is added as a hydrophobizing agent an organohalosilane, preferably at about 50.degree. to 90.degree. C., the precipitated product filtered, washed and dried and there subjected to a temperature of 300.degree. to 400.degree. C. There is used as the organohalosilane a prepolycondensed organohalosilane or a mixture of prepolycondensed organohalosilanes.
摘要翻译： 通过用无机酸或金属盐溶液沉淀碱金属硅酸盐溶液并用有机卤代硅烷处理来制备细分疏水硅石和硅酸盐。 以已知方式回收的酸沉淀悬浮液中，作为疏水化剂加入有机卤代硅烷，优选在约50-90℃，将沉淀的产物过滤，洗涤和干燥，并进行300至400℃的温度 C.使用有机卤代硅烷预预缩聚的有机卤代硅烷或预缩聚有机卤代硅烷的混合物。
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公开(公告)号：US3985571A
公开(公告)日：1976-10-12
申请号：US590469
申请日：1975-06-26
CPC分类号： C01C3/12 , C09C1/26 , C01P2006/60
摘要： Berlin blue is produced by converting (a) calcium ferrocyanide, sodium ferrocyanide or magnesium ferrocyanide with (b) an iron II salt at a pH below 7 to an acidic iron II salt of ferrocyanic acid FeH.sub.2 [Fe(CN).sub.6 ]. The calcium or sodium ions can be washed out of the precipitate of the ferrocyanic salt. The precipitate is treated with (c) an inorganic or organic potassium salt to form Berlin white and then oxidized to Berlin blue. Alternatively, (a), (b) and (c) can be reacted together at a temperature of 20.degree. to 60.degree.C. to form Berlin white directly.
摘要翻译： 通过将（a）亚铁氰化亚铁，亚铁氰化钠或亚铁氰化镁与（b）在低于7的pH下的铁II盐转化为铁氰化物FeH2 [Fe（CN）6]的酸性铁II盐来生产柏林蓝。 钙或钠离子可以从亚铁氰化物沉淀物中洗掉。 沉淀物用（c）无机或有机钾盐处理以形成柏林白，然后氧化成柏林蓝。 或者，（a），（b）和（c）可以在20℃至60℃的温度下一起反应，直接形成柏林白。
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