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    • 1. 发明申请
    • METHOD FOR PREPARING FINE SPHERICAL POLYCARBONATE POWDERS AND METHOD FOR PREPARING HIGH MOLECULAR WEIGHT POLYCARBONATE RESIN USING SAME
    • 制备精细球状聚碳酸酯粉末的方法和使用其制备高分子量聚碳酸酯树脂的方法
    • US20110245451A1
    • 2011-10-06
    • US13139528
    • 2009-10-13
    • Se Hoon KimSang Hyun ParkYoung Koan Ko
    • Se Hoon KimSang Hyun ParkYoung Koan Ko
    • C08G64/40C08G64/30B29C47/38
    • C08G64/40B29C47/0011B29C47/30B29C47/364B29C47/367B29C47/38B29K2069/00B29K2105/0002B29K2105/251C08G64/307C08J3/12C08J2369/00
    • Provided are a method for preparing fine round powdery polycarbonate and a method for preparing a high molecular weight polycarbonate resin using the same.More specifically, provided are a method for preparing fine round powdery polycarbonate, comprising (A) polymerizing non-phosgene polycarbonate, (B) extruding the polycarbonate into fine round powdery amorphous polycarbonate, (C) surface-crystallizing the fine round powdery amorphous polycarbonate in the presence of a solvent or dispersion medium, and (D) drying the surface-crystallized fine round powdery polycarbonate, and a method for preparing high molecular weight polycarbonate resin capable of obtaining polycarbonates with various molecular weights ranging from low molecular weights to high molecular weights by continuously using the obtained fine round powdery polycarbonate via a solid state polymerization step. In accordance with the methods, it is possible to remarkably simplify crystallization of amorphous polycarbonate and thus to realize process continuousness and economical efficiency enabling commercial mass-production, and to overcome production of high molecular weight polycarbonate, the most serious problem of conventional non-phosgene melt polymerization processes.
    • 提供一种制备细圆粉末聚碳酸酯的方法和使用其制备高分子量聚碳酸酯树脂的方法。 更具体地,提供了制备细圆形聚碳酸酯的方法,其包括(A)聚合非光气聚碳酸酯,(B)将聚碳酸酯挤出成细圆形粉末状无定形聚碳酸酯,(C)使细圆形粉末状无定形聚碳酸酯表面结晶 溶剂或分散介质的存在,(D)干燥表面结晶的细圆形聚碳酸酯,以及制备高分子量聚碳酸酯树脂的方法,所述聚碳酸酯树脂能够获得从低分子量到高分子量的各种分子量的聚碳酸酯 通过固态聚合步骤连续地使用所得到的细圆形聚碳酸酯。 根据该方法,可以显着简化无定形聚碳酸酯的结晶化,从而实现工业连续性和经济效率,使得商业化批量生产,并克服高分子量聚碳酸酯的生产,这是常规非光气中最严重的问题 熔融聚合工艺。
    • 2. 发明授权
    • Method for preparing fine spherical polycarbonate powders and method for preparing high molecular weight polycarbonate resin using same
    • 球形聚碳酸酯粉末的制备方法及使用其制备高分子量聚碳酸酯树脂的方法
    • US08546522B2
    • 2013-10-01
    • US13139528
    • 2009-10-13
    • Se Hoon KimSang Hyun ParkYoung Koan Ko
    • Se Hoon KimSang Hyun ParkYoung Koan Ko
    • C08F6/00
    • C08G64/40B29C47/0011B29C47/30B29C47/364B29C47/367B29C47/38B29K2069/00B29K2105/0002B29K2105/251C08G64/307C08J3/12C08J2369/00
    • Provided are a method for preparing fine round powdery polycarbonate and a method for preparing a high molecular weight polycarbonate resin using the same.More specifically, provided are a method for preparing fine round powdery polycarbonate, comprising (A) polymerizing non-phosgene polycarbonate, (B) extruding the polycarbonate into fine round powdery amorphous polycarbonate, (C) surface-crystallizing the fine round powdery amorphous polycarbonate in the presence of a solvent or dispersion medium, and (D) drying the surface-crystallized fine round powdery polycarbonate, and a method for preparing high molecular weight polycarbonate resin capable of obtaining polycarbonates with various molecular weights ranging from low molecular weights to high molecular weights by continuously using the obtained fine round powdery polycarbonate via a solid state polymerization step. In accordance with the methods, it is possible to remarkably simplify crystallization of amorphous polycarbonate and thus to realize process continuousness and economical efficiency enabling commercial mass-production, and to overcome production of high molecular weight polycarbonate, the most serious problem of conventional non-phosgene melt polymerization processes.
    • 提供一种制备细圆粉末聚碳酸酯的方法和使用其制备高分子量聚碳酸酯树脂的方法。 更具体地,提供了制备细圆形聚碳酸酯的方法,其包括(A)聚合非光气聚碳酸酯,(B)将聚碳酸酯挤出成细圆形粉末状无定形聚碳酸酯,(C)使细圆形粉末状无定形聚碳酸酯表面结晶 溶剂或分散介质的存在,(D)干燥表面结晶的细圆形聚碳酸酯,以及制备高分子量聚碳酸酯树脂的方法,所述聚碳酸酯树脂能够获得从低分子量到高分子量的各种分子量的聚碳酸酯 通过固态聚合步骤连续地使用所得到的细圆形聚碳酸酯。 根据该方法,可以显着简化无定形聚碳酸酯的结晶化,从而实现工业连续性和经济效率,使得商业化批量生产,并克服高分子量聚碳酸酯的生产,这是常规非光气中最严重的问题 熔融聚合工艺。