公开(公告)号：EP3109271A4

公开(公告)日：2016-12-28

申请号：EP15752229

申请日：2015-02-19

申请人： TEIJIN LTD

发明人： TOMONARI YASUHIKO

IPC分类号： C08G63/189 ,  C08K3/02 ,  C08L67/02

CPC分类号： C08K5/5317 ,  C08G63/189 ,  C08G2120/00 ,  C08J7/00 ,  C08J2367/02 ,  C08K3/08 ,  C08K2003/0843 ,  C08K2003/0875 ,  C08K3/02 ,  C08L67/02 ,  C08K3/32

摘要： The object of the present invention is to provide a highly crystalline polyethylene-2,6-naphthalate composition by achieving high molecular weight of PEN, wherein the polyethylene-2,6-naphthalate composition has greatly improved blow moldability and provides molded products having excellent hue, excellent weathering resistance, and additionally excellent transparency. The above-mentioned problems can be solved by a polyethylene-2,6-naphthalate composition comprising a specific phosphoric acid which is a phosphorus compound, cobalt element derived from a cobalt compound, manganese element derived from a manganese compound, and antimony element derived from an antimony compound, wherein the content of each of the elements simultaneously satisfies the following expressions (1) to (4): 10 ‰¤ Co ‰¤ 30 mmol % 0.50 ‰¤ P / Mn ‰¤ 1.28 10 ‰¤ Sb ‰¤ 25 mmol % 0.60 ‰¤ IV ‰¤ 1.50 dL / g