公开(公告)号：US06617416B2

公开(公告)日：2003-09-09

申请号：US10257476

申请日：2002-10-15

申请人： Takahiro Nakamura ,  Masanori Furukawa ,  Akira Okamura ,  Daigo Nakaya ,  Isamu Masumoto

发明人： Takahiro Nakamura ,  Masanori Furukawa ,  Akira Okamura ,  Daigo Nakaya ,  Isamu Masumoto

IPC分类号： C08G222

CPC分类号： C08L59/04 ,  C08G2/18 ,  C08K5/3492

摘要： A polyoxymethylene copolymer which is a polyoxymethylene copolymer obtained by copolymerizing trioxane and 8 to 20 mol, per 100 mol of the trioxane, of 1,3-dioxolane and which (i) has a crystallization time period of 10 to 2,000 seconds at 143° C., (ii) withstands 30 to 1,000 cycles of a bending durability test and (iii) has residence heat stability for 40 minutes or more, and a molded article formed of the copolymer. According to the present invention, there can be provided a polyoxymethylene copolymer excellent in bending durability and heat stability and excellent in moldability, and a molded article formed thereof.

摘要翻译： 聚氧亚甲基共聚物，其是通过使三恶烷和每摩尔三恶烷为8〜20摩尔的1,3-二氧戊环共聚得到的聚甲醛共聚物，（i）在143℃下的结晶时间为10〜2000秒 ，（ii）经受30〜1000次弯曲耐久性试验循环，（iii）具有40分钟以上的停留热稳定性，以及由共聚物形成的成型体。根据本发明，可以提供聚甲醛 共聚物弯曲耐久性和热稳定性优异，成型性优异的共聚物及其成型体。