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    • 1. 发明申请
    • Method of preparing polymethylene-polyphenyl-polyamine
    • 聚亚甲基 - 多苯基多胺的制备方法
    • US20080249261A1
    • 2008-10-09
    • US11873056
    • 2007-10-16
    • Jiansheng DingJianfeng ChenHongke ZhangHaikui ZouWeiqi HuaPengyuan ZhangShuchang SunGuangwen ChuLimin Xu
    • Jiansheng DingJianfeng ChenHongke ZhangHaikui ZouWeiqi HuaPengyuan ZhangShuchang SunGuangwen ChuLimin Xu
    • C08F2/01
    • C08G73/0266C08L79/02
    • The present invention provides a method of preparing polymethylene-polyphenyl-polyamine (briefly referred to as polyamine, DAM), in which a high gravity rotating bed is used as the mixing reactor of formaldehyde and aniline hydrochloride, the mixing solution of aniline hydrochloride and circulation solution and the formaldehyde are fed into the high gravity rotating bed reactor proportionally to carry out mixing and condensation reaction under a condition of a very high gravity; the materials leaving the high gravity rotating bed reactor is introduced into a stirred vessel to proceed with the pre-condensation reaction and obtain a condensation solution; and the process steps of heating, molecular rearrangement, neutralization, water washing and purification, etc. are completed to obtain the refined DAM. With the method according to the present invention, the main by-products is obviously reduced in the condensation process, the phenomenon of deposit attaching to the inner walls of circulation pipes and heat exchanger and blockage are prevented in the condensation process, the impurity content is low in the refined DAM, and the subsequent product MDI has a lighter color, the product quality is stable and may be improved to a certain extent.
    • 本发明提供了使用高重力旋转床作为甲醛和苯胺盐酸盐的混合反应器的多亚甲基 - 多苯基多胺(简称为多胺,DAM)的制备方法,盐酸苯胺和循环的混合溶液 溶液和甲醛按比例进料到高重力旋转床反应器中,以在非常高的重力条件下进行混合和缩合反应; 将离开高重力旋转床反应器的材料引入搅拌容器中以进行预缩合反应并获得缩合溶液; 完成加热,分子重排,中和,水洗净化等工艺步骤,得到精制DAM。 根据本发明的方法,冷凝过程中主要副产物明显减少,在冷凝过程中防止了附着在循环管内壁和热交换器上的沉积现象,堵塞现象,杂质含量为 精炼DAM低,后续产品MDI颜色较浅,产品质量稳定,可在一定程度上提高。
    • 2. 发明授权
    • Method of preparing polymethylene-polyphenyl-polyamine
    • 聚亚甲基 - 多苯基多胺的制备方法
    • US07893301B2
    • 2011-02-22
    • US11873056
    • 2007-10-16
    • Jiansheng DingJianfeng ChenHongke ZhangHaikui ZouWeiqi HuaPengyuan ZhangShuchang SunGuangwen ChuLimin Xu
    • Jiansheng DingJianfeng ChenHongke ZhangHaikui ZouWeiqi HuaPengyuan ZhangShuchang SunGuangwen ChuLimin Xu
    • C07C211/00
    • C08G73/0266C08L79/02
    • The present invention provides a method of preparing polymethylene-polyphenyl-polyamine (briefly referred to as polyamine, DAM), in which a high gravity rotating bed is used as the mixing reactor of formaldehyde and aniline hydrochloride, the mixing solution of aniline hydrochloride and circulation solution and the formaldehyde are fed into the high gravity rotating bed reactor proportionally to carry out mixing and condensation reaction under a condition of a very high gravity; the materials leaving the high gravity rotating bed reactor is introduced into a stirred vessel to proceed with the pre-condensation reaction and obtain a condensation solution; and the process steps of heating, molecular rearrangement, neutralization, water washing and purification, etc. are completed to obtain the refined DAM. With the method according to the present invention, the main by-products is obviously reduced in the condensation process, the phenomenon of deposit attaching to the inner walls of circulation pipes and heat exchanger and blockage are prevented in the condensation process, the impurity content is low in the refined DAM, and the subsequent product MDI has a lighter color, the product quality is stable and may be improved to a certain extent.
    • 本发明提供了使用高重力旋转床作为甲醛和苯胺盐酸盐的混合反应器的多亚甲基 - 多苯基多胺(简称为多胺,DAM)的制备方法,盐酸苯胺和循环的混合溶液 溶液和甲醛按比例进料到高重力旋转床反应器中,以在非常高的重力条件下进行混合和缩合反应; 将离开高重力旋转床反应器的材料引入搅拌容器中以进行预缩合反应并获得缩合溶液; 完成加热,分子重排,中和,水洗净化等工艺步骤,得到精制DAM。 根据本发明的方法,冷凝过程中主要副产物明显减少,在冷凝过程中防止了附着在循环管内壁和热交换器上的沉积现象,堵塞现象,杂质含量为 精炼DAM低,后续产品MDI颜色较浅,产品质量稳定,可在一定程度上提高。
    • 7. 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。
    • 8. 发明申请
    • High-gravity reactive precipitation process for the preparation of barium titanate powders
    • 用于制备钛酸钡粉末的高重力反应沉淀法
    • US20050019248A1
    • 2005-01-27
    • US10624944
    • 2003-07-21
    • Jianfeng ChenXiaolin LiuZhigang ShenGuangwen Chu
    • Jianfeng ChenXiaolin LiuZhigang ShenGuangwen Chu
    • B01J8/10C01G23/00C01G23/04
    • B82Y30/00B01J8/10B01J2219/00006C01G23/006C01P2002/72C01P2004/04C01P2004/62C01P2004/64C01P2006/40
    • The invention relates to a process for the preparation of fine barium titanate (BaTiO3) powders. The process comprises introducing an aqueous solution (I) containing salts of barium and titanium, and an aqueous basic solution (II) containing an inorganic or organic base separately and simultaneously into a high-gravity reactor with the high-gravity level of 1.25G to 12,500G and performing the reaction of the solution (I) with the solution (II) at a temperature of from 60 to 100° C. The solution (I) is preheated to a temperature ranging from 60° C. to 65° C. and the solution (II) is preheated to a temperature ranging from 60° C. to 100° C. respectively prior to the reaction, in which the Ba/Ti molar ratio in the solution (I) is more than 1 and the concentration of the base in the solution (II) is such that the reaction mixture is maintained at a constant OH− concentration, preferably a pH value of about 14. The reaction product is separated by filtering and washed with deionized water to remove the impurity ions and excessive barium ions, and then dried to obtain BaTiO3 powders. Said powders consist essentially of crystalline, primary particles having a uniform particle size ranging from 5 to 200 nm, an approximately spherical morphology and a high sintering activity.
    • 本发明涉及一种制备精细钛酸钡(BaTiO3)粉末的方法。 该方法包括将含有钡和钛的盐的水溶液(I)和含有无机或有机碱的碱性水溶液(II)分别并入同时进入高重力水平为1.25G的高重力反应器中 12,500G,并在60〜100℃的温度下进行溶液(I)与溶液(II)的反应。将溶液(I)预热至60℃至65℃的温度。 并且溶液(II)分别在反应之前预热至60℃至100℃的温度,其中溶液(I)中的Ba / Ti摩尔比大于1,浓度 溶液(II)中的碱使得反应混合物保持恒定的OH - 浓度,优选pH值为约14.反应产物通过过滤分离并用去离子水洗涤以除去杂质离子 和过量的钡离子,然后干燥得到BaTiO3粉末 呃 所述粉末基本上由具有5至200nm的均匀粒度的晶体初级粒子,近似球形的形态和高烧结活性组成。
    • 10. 发明申请
    • MICROCHANNEL DOUBLE PIPE DEVICE AND USAGE THEREOF
    • 微通道双管设备及其使用
    • US20120037232A1
    • 2012-02-16
    • US13263833
    • 2010-04-09
    • Zhigang ShenJimmy Sunglai YunJianfeng ChenGuangwen Chu
    • Zhigang ShenJimmy Sunglai YunJianfeng ChenGuangwen Chu
    • F15D1/00F16L9/18
    • B01F15/065B01F11/0266B01F13/0067B01F13/1027B01J19/0093B01J2219/00788B01J2219/00889B22F2998/00Y10T137/0318
    • A microchannel double pipe device comprises a channel for inner nozzle (4), a channel for outer nozzle (5) and a mechanical probe (8). The channel for outer nozzle (5) concentrically surrounds the channel for inner nozzle (4), and the channel for inner nozzle (4) concentrically surrounds the mechanical probe (8). Constricted at the outlet of the channel for inner nozzle (4), the channel for inner nozzle (4) extends to form an inner nozzle core (9). Constricted at the outlet of the channel for outer nozzle (5), the channel for outer nozzle (5) extends to form an outer nozzle core (10). The outer nozzle core (10) essentially concentrically surrounds the inner nozzle core (9), and the outlets of the inner nozzle core (9) and the outer nozzle core (10) are at the same level essentially. The mechanical probe (8) is configured to intermittently empty the inner nozzle core (9). The device can be used for microcosmic mixing and reaction, especially suitable for continuous preparation of inorganic, organic or medicine particles with nanostructure or micron-structure using liquid-liquid precipitation method.
    • 微通道双管装置包括用于内部喷嘴(4)的通道,用于外部喷嘴(5)的通道和机械探针(8)。 外喷嘴(5)的通道同心地围绕用于内喷嘴(4)的通道,内喷嘴(4)的通道同心地围绕机械探头(8)。 在内喷嘴(4)的通道的出口处被限制,内喷嘴(4)的通道延伸以形成内喷嘴芯(9)。 在外喷嘴(5)的通道的出口处受限,外喷嘴(5)的通道延伸以形成外喷嘴芯(10)。 外喷嘴芯(10)基本上同心地围绕内喷嘴芯(9),并且内喷嘴芯(9)和外喷嘴芯(10)的出口基本上处于相同的水平。 机械探针(8)构造成间歇地排空内部喷嘴芯(9)。 该装置可用于微观混合和反应,特别适用于使用液 - 液沉淀法连续制备具有纳米结构或微米结构的无机,有机或药物颗粒。