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    • 77. 发明申请
    • Silica support material, its application in a polyalkene catalyst, and its preparation process
    • 二氧化硅载体材料,其在聚烯烃催化剂中的应用及其制备方法
    • US20060120941A1
    • 2006-06-08
    • US11291154
    • 2005-12-01
    • Jianfeng ChenJirui SongHaikui ZouLixiong Wen
    • Jianfeng ChenJirui SongHaikui ZouLixiong Wen
    • C01B33/12
    • C01B33/193B01J21/08B01J35/08B01J37/0018B01J37/0072C08F4/65916C08F10/00C08F4/025
    • An SiO2 support material used in a polyolefin catalyst, which consists of a hollow silica particle having a wall of some thickness and a process to prepare the silica mesoporous material above and the agglomerated hollow silica particulate, comprising the steps of: taking nanometer-sized calcium carbonate as inorganic template, or taking PMMA, PS, PU as organic template, then making silica grow and synthesize on the surface of the template, and obtaining the hollow silica material by removing the template. The above hollow silica can be used as raw material to prepare an agglomerated hollow silica particulate by particle shaping. Such material has a certain specific surface area, a wide pore size distribution and a large pore volume, and a uniform particle size distribution, so it can be used in many applications such as adsorption material, catalyst material, wave-absorbing material, ceramic material, sensitive material, magnetic material and the like, especially widely used in the polyolefin catalyst.
    • 用于聚烯烃催化剂中的SiO 2支撑材料,其由具有一定厚度的壁的中空二氧化硅颗粒和制备上述二氧化硅介孔材料的方法和团聚的中空二氧化硅颗粒组成,包括 步骤:以纳米级碳酸钙为无机模板,或以PMMA,PS,PU为有机模板,然后在模板表面生成二氧化硅并合成,并通过去除模板获得中空二氧化硅材料。 可以使用上述中空二氧化硅作为原料,通过粒子成型制备凝聚的中空二氧化硅颗粒。 这种材料具有一定的比表面积,宽孔径分布和孔体积大,粒径分布均匀的特点,可用于吸附材料,催化剂材料,吸波材料,陶瓷材料等众多领域 ,敏感材料,磁性材料等,特别广泛用于聚烯烃催化剂中。
    • 78. 发明申请
    • Ultrafine Modified Aluminum Hydroxide and Its Preparation
    • 超细改性氢氧化铝及其制备方法
    • US20050167641A1
    • 2005-08-04
    • US10707048
    • 2003-11-18
    • Jianfeng ChenFen GuoLei LiangZhigang Shen
    • Jianfeng ChenFen GuoLei LiangZhigang Shen
    • C01F7/02C01F7/14C09K21/02C09K21/00
    • B82Y30/00C01F7/02C01F7/142C01P2002/01C01P2002/72C01P2002/74C01P2002/82C01P2002/88C01P2004/04C01P2004/61C01P2004/62C01P2004/64C01P2006/10C01P2006/11C01P2006/12C09K21/02Y02P20/142
    • A method of preparing ultrafine modified aluminum hydroxide, having two steps: a carbon component decomposition under ultra gravity conditions in a rotating bed, and a modifying treatment. The carbon component decomposition is carried out in porous packing layer inside of a rotating bed, where the mass transfer for the reaction and micro-mixing process are extremely enhanced. The aluminum hydroxide solution (as a precipitate or a dry powder) obtained is further converted by the subsequent modified treatment process. This method can control the particle size of the modified aluminum hydroxide crystal grains, homogenize its distribution, and shorten the reaction time. Particularly, the modified treatment greatly improves its weight loss temperature and weight loss ratio. The use field of the resulting aluminum hydroxide as a flame retardant and other is expanded. The average size of modified aluminum hydroxide grain obtained is from 50 nm to several micrometers, and can be controlled. Its grain size can be homogeneously distributed and nano-graded. The mechanical properties of polymers containing the ultrafine modified aluminum hydroxide are improved. The process of the present invention can be conveniently used in industries and can improve productivity and the product grade.
    • 一种制备超细改性氢氧化铝的方法,具有两个步骤:在旋转床中超重力条件下的碳成分分解和改性处理。 碳分量分解在旋转床内部的多孔填充层中进行,其中用于反应和微混合过程的质量传递极大地增强。 获得的氢氧化铝溶液(作为沉淀物或干粉)通过后续的改性处理工艺进一步转化。 该方法可以控制改性氢氧化铝晶粒的粒度,使其分布均匀,缩短反应时间。 特别是改性处理大大提高了其体重减轻温度和体重减轻率。 所得到的氢氧化铝用作阻燃剂等的使用领域被扩大。 获得的改性氢氧化铝颗粒的平均尺寸为50nm至几微米,并且可以被控制。 其粒度可以均匀分布和纳米级分。 含有超细改性氢氧化铝的聚合物的机械性能得到改善。 本发明的方法可以方便地用于工业中,并且可以提高生产率和产品等级。