公开(公告)号：US20180371283A1

公开(公告)日：2018-12-27

申请号：US16118803

申请日：2018-08-31

申请人： LOTTE CHEMICAL CORPORATION

发明人： Byung Hun CHAE ,  Sung Won JUNG ,  Jung Yeop LEE ,  Hyun Yul WOO ,  Youn Jin HONG

IPC分类号： C09D123/12 ,  C09D123/14 ,  B29C64/106 ,  B33Y70/00 ,  C09D11/34 ,  C09D11/108

摘要： A method of three-dimensional (3D) printing, the method including: heating a composition comprising a polymer base including atactic polypropylene having a weight average molecular weight of 50,000 to 1,000,000, a density of 0.8 to 0.9 g/ml, and isotacticity (Pentad I.I, mmmm) of 5 to 20%, wherein a melting index (210° C., 2.16 kg) of the polymer base is 0.5-30 g/10 minutes; extruding the composition as a filament; and applying the extruded filament in one or more layers, wherein a solidification rate (measuring melting indexes (MI, 150° C., 10 kg)) of the filament is less than or equal to 2 g/10 minutes and a melting rate (measuring melting indexes (MI, 180° C., 10 kg)) of the filament is greater than or equal to 10 g/10 minutes, and hardness of the polymer base is less than or equal to Shore A 90.

公开(公告)号：US20190119427A1

公开(公告)日：2019-04-25

申请号：US16091658

申请日：2017-04-06

申请人： LOTTE CHEMICAL CORPORATION

发明人： Byung Hun CHAE ,  Hyun Yul WOO ,  Rai Ha LEE ,  Joon Keun MIN ,  Sung Won JUNG ,  Youn Jin HONG ,  Eun Hye SHIN

IPC分类号： C08F236/06 ,  C08F210/06 ,  C08F236/22 ,  C08F232/06 ,  C08F2/60 ,  C08F2/44

摘要： Disclosed is a propylene-diene copolymer resin having excellent melt tension, with improved melt strength, high molecular weight and broad molecular weight distribution by using a specific metallocene catalyst system. The present invention provides a propylene-diene copolymer resin produced by polymerizing propylene and a diene compound of C4-C20 by using a metallocene catalyst system, wherein the propylene-diene copolymer resin has the melt index (2.16 kg load at 230° C.) of 0.1-100 g/10 min and the melt tension (advanced rheometric expansion system (ARES)) of 5-100 g.