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    • 2. 发明申请
    • CATALYST COMPRISING HETEROLEPTIC ALUMINUM AND COBALT COMPOUNDS AND A METHOD OF PREPARING POLYBUTADIENE USING THE SAME
    • 包含异丁烯铝和钴化合物的催化剂和使用其制备聚丁二烯的方法
    • US20090048408A1
    • 2009-02-19
    • US12187420
    • 2008-08-07
    • Gwanghoon KwagPilsung KimSeung Hwon LeeHyung Kyu Choi
    • Gwanghoon KwagPilsung KimSeung Hwon LeeHyung Kyu Choi
    • C08F4/602
    • C08F36/04C08F4/7096
    • The present invention relates to a novel catalyst for diene polymerization comprising a heteroleptic single-molecule aluminum compound and a cobalt compound having a carboxyl group with a predetermined proportion and a method for preparing polybutadiene from 1,3-butadiene using a catalyst for diene polymerization.The novel catalyst of the present invention, which comprises a heteroleptic single-molecule aluminum compound with a huge stereostructure and a cobalt compound, has a stabilized catalytic active site without the need of adding a special material for controlling the activity of cobalt, such as water, phenol, alcohol, and phosphorus compound, and has good activity without a catalyst aging process since the reduction of cobalt is minimized. Consequently, the catalyst may be used to polymerize 1,3-butadiene to obtain polybutadienes having cis and trans structures with good yield and narrow molecular weight distribution.
    • 本发明涉及一种新型二烯聚合催化剂,其包含异位单分子铝化合物和具有预定比例的羧基的钴化合物,以及使用二烯聚合催化剂由1,3-丁二烯制备聚丁二烯的方法。 本发明的新型催化剂包括具有巨大立体结构的杂多单分子铝化合物和钴化合物,具有稳定的催化活性位点,而不需要添加用于控制钴的活性的特殊材料,例如水 ,苯酚,醇和磷化合物,并且由于钴的还原最小化,所以没有催化剂老化过程具有良好的活性。 因此,催化剂可用于聚合1,3-丁二烯以获得具有良好产率和窄分子量分布的顺式和反式结构的聚丁二烯。
    • 4. 发明申请
    • ORGANIC-INORGANIC NANO COMPOSITES AND PREPARATION METHOD THEREOF
    • 有机无机纳米复合材料及其制备方法
    • US20100184922A1
    • 2010-07-22
    • US12608717
    • 2009-10-29
    • Gwanghoon KwagHoochae KimSeunghwon LeeHwieon ParkHyung Kyu Choi
    • Gwanghoon KwagHoochae KimSeunghwon LeeHwieon ParkHyung Kyu Choi
    • C08F257/00
    • C08K5/548B60C1/0016C08F2/38C08F236/10C08F279/02C08F2438/03C08K3/36C08L9/00C08L9/06C08L51/04Y02T10/862C08F220/14C08L2666/02
    • Provided is an organic-inorganic nano composite, and more particularly, an organic-inorganic nano composite including: a styrene-butadiene copolymer; an acryl-based monomer; a living radical polymerization initiator; silica; and a coupling agent, in which radiality is maximized. The organic-inorganic nano composite is prepared using a method comprising: preparing a spherical styrene-butadiene copolymer; preparing a nano-sized spherical styrene-butadiene-acrylate copolymer using living radical polymerization of the spherical styrene-butadiene copolymer and an acryl-based monomer; and preparing a composite by coupling the nano-sized spherical styrene-butadiene-acrylate copolymer and silica using a coupling agent. The organic-inorganic nano composite has excellent tensile and tear properties, and high wet traction capability. Thus, if the organic-inorganic nano composite according to the present invention is applied to organic filler for tires, rolling resistance can be decreased and wet traction capability can be increased, and the organic-inorganic nano composite can be efficiently applied to a hard coating material as well.
    • 本发明提供一种有机 - 无机纳米复合体,更具体地说,涉及含有:苯乙烯 - 丁二烯共聚物的有机 - 无机纳米复合物, 丙烯酸类单体; 活性自由基聚合引发剂; 二氧化硅 和其中径向性最大化的偶联剂。 有机 - 无机纳米复合材料是使用以下方法制备的:制备球形苯乙烯 - 丁二烯共聚物; 使用球形苯乙烯 - 丁二烯共聚物和丙烯酸类单体的活性自由基聚合制备纳米尺寸的球形苯乙烯 - 丁二烯 - 丙烯酸酯共聚物; 并通过使用偶联剂偶联纳米尺寸的球形苯乙烯 - 丁二烯 - 丙烯酸酯共聚物和二氧化硅来制备复合材料。 有机 - 无机纳米复合材料具有优异的拉伸和撕裂性能,以及高湿牵引能力。 因此,如果将本发明的有机无机纳米复合体用于轮胎用有机填料,则能够降低滚动阻力,提高湿牵引能力,能够有效地将有机 - 无机纳米复合材料应用于硬涂层 材料以及。