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    • 1. 发明授权
    • Process for co-producing 1,1,1,2-tetrafluoroethane pentafluoroethane and
1,1,1-trifluoroethane
    • 共1,1,1,2-四氟乙烷五氟乙烷和1,1,1-三氟乙烷共生产方法
    • US5659094A
    • 1997-08-19
    • US591705
    • 1996-01-25
    • Hoon Sik KimByung Gwon LeeHonggon KimMoon Jo Chung
    • Hoon Sik KimByung Gwon LeeHonggon KimMoon Jo Chung
    • B01J23/26B01J27/12B01J27/132B01J27/138C07B61/00C07C17/20C07C17/21C07C17/23C07C19/08
    • C07C17/21B01J27/132B01J27/138C07C17/206C07C17/23
    • A process for co-production of 1,1,1,2-tetrafluoroethane (HFC-134a;CF.sub.3 CH.sub.2 F), pentafluoroethane (HFC-125; CF.sub.3 CHF.sub.2) and 1,1,1 -trifluoroethane (HFC-143a; CF.sub.3 CH.sub.3) by a two-step gaseous reaction comprising the steps of a) reacting 1,1,1-trifluoro-2-chloroethane (CFCH.sub.2 Cl, HCFC-133a) with HF in a first reactor to prepare 1,1,1,2-tetrafluoroethane (HFC-134a; CF.sub.3 CH.sub.2 F), pentafluoroethane (HFC-125; CF.sub.3 CHF.sub.2) and 1,1,1-trifluoroethane (HFC-143a; CF.sub.3 CH.sub.3); b) adding trichloroethylene (TCE:CCl.sub.2 CHCl) to the reaction product of step a) in a second reactor to prepare HCFC-133a; separating HCl, HFC-134a, HFC-125 and HFC-143a from the reaction product of step b) and recycling HCFC-133a to the first reactor, and the stages being performed in the presence of fluorization catalyst obtained by calcining a reaction product which is obtained by reacting ethanol with a mixture of calcium fluoride(CaF.sub.2) with an aqueous solution of chromium trioxide, zinc chloride and ferrous chloride is provided.
    • 一种通过两个共同生产1,1,1,2-四氟乙烷(HFC-134a; CF3CH2F),五氟乙烷(HFC-125; CF3CHF2)和1,1,1-三氟乙烷(HFC-143a; CF3CH3)的方法 包括以下步骤:a)在第一反应器中使1,1,1-三氟-2-氯乙烷(CFCH2Cl,HCFC-133a)与HF反应制备1,1,1,2-四氟乙烷(HFC-134a ; CF 3 CH 2 F),五氟乙烷(HFC-125; CF 3 CHF 2)和1,1,1-三氟乙烷(HFC-143a; CF 3 CH 3); b)在第二反应器中将三氯乙烯(TCE:CCl 2 CHCl)加入到步骤a)的反应产物中以制备HCFC-133a; 从步骤b)的反应产物中分离出HCl,HFC-134a,HFC-125和HFC-143a,并将HCFC-133a再循环到第一反应器中,这些阶段在通过煅烧反应产物得到的氟化催化剂存在下进行, 通过乙醇与氟化钙(CaF 2)与三氧化铬的水溶液,氯化锌和氯化亚铁的混合物反应获得。
    • 8. 发明授权
    • Polyolefin foam beads having high density crust and method for manufacturing the same
    • 具有高密度地壳的聚烯烃泡沫珠及其制造方法
    • US06476088B1
    • 2002-11-05
    • US09761568
    • 2001-01-16
    • Moon Jo ChungNak Joong Kim
    • Moon Jo ChungNak Joong Kim
    • C08J922
    • C08J9/18B29C44/3461C08J2323/02
    • Polyolefin foam bead having a high-density crust and a method for manufacturing the same are disclosed. The novel polyolefin foam bead having an surface layer (crust) which is higher in density than its inner structure can be manufactured by the method comprised of impregnating a polyolefin resin with a forming agent by stirring the mixture of the polyolefin resin particles, water and the foaming agent in a pressure vessel under heat, followed by diffusing out the foaming agent from the surface layer of the resin particle to decrease the concentration of the foaming agent in the surface layer. Thereafter, the polyolefin resin is foamed by discharging the resin particles to low pressure environment.
    • 公开了具有高密度地壳的聚烯烃泡沫珠及其制造方法。 具有密度高于其内部结构的表面层(外壳)的新型聚烯烃泡沫珠粒可以通过以下方法制造:将聚烯烃树脂浸渍在成形剂中,通过搅拌聚烯烃树脂颗粒,水和 发泡剂在加热的压力容器中,然后从树脂颗粒的表面层扩散出发泡剂,以降低发泡剂在表面层中的浓度。 此后,聚烯烃树脂通过将树脂颗粒排放到低压环境而发泡。
    • 9. 发明授权
    • Continuous process for manufacturing polyolefin foam beads
    • 制造聚烯烃泡沫珠的连续工艺
    • US06403662B2
    • 2002-06-11
    • US09761565
    • 2001-01-16
    • Moon Jo ChungNak Joong Kim
    • Moon Jo ChungNak Joong Kim
    • C08J916
    • B29C44/3453B29C44/206B29C44/3461C08J9/18C08J2323/02Y10S521/917
    • A method for manufacturing polyolefin foam beads by a continuous process is disclosed by which the polyolefin foam beads can be produced with increased efficiency and productivity. The method comprises a step of impregnating foaming agent into polyolefin resin by mixing polyolefin resin particles, water and the foaming agent in a impregnation chamber under heat and pressure, followed by a step of storing the polyolefin resin containing the foaming agent in a storing chamber under heat and pressure. Thereafter, the resin particles are subjected to a foaming step by continuously or intermittently discharging the resin particles from the storing chamber to a low pressure expansion chamber by utilizing a discharging device, in the same time period when a next batch of polyolefin resin is added and mixed in the impregnation chamber after being supplied with the resin particles from a resin supply chamber.
    • 公开了一种通过连续方法制造聚烯烃泡沫珠的方法,通过该方法可以以更高的效率和生产率生产聚烯烃泡沫珠。 该方法包括通过在聚烯烃树脂中将聚烯烃树脂颗粒,水和发泡剂在加热和压力下在浸渍室中混合,然后将含有发泡剂的聚烯烃树脂储存在储存室中的步骤,将发泡剂浸渍到聚烯烃树脂中 热和压力。 此后,在添加下一批聚烯烃树脂的同一时间段内,通过利用排出装置将树脂颗粒从储存室连续地或间歇地排出到低压膨胀室,从而对树脂颗粒进行发泡步骤, 在从树脂供给室供给树脂粒子之后,在浸渍室中混合。