公开(公告)号：US06506850B1

公开(公告)日：2003-01-14

申请号：US09763372

申请日：2001-02-21

申请人： Noritaka Tanimura ,  Atushi Nanasawa

发明人： Noritaka Tanimura ,  Atushi Nanasawa

IPC分类号： C08L6102

CPC分类号： C08L59/04 ,  C08G2/00 ,  C08G2/04 ,  C08G2/06 ,  C08G2/10

摘要： A polyoxymethylene copolymer having a melting point of 167° to 173° C. and containing a low molecular weight polyoxymethylene copolymer in an amount of not higher than 5000 ppm, and a composition thereof. The copolymer is obtainable by subjecting unstable terminal groups to heat treatment in the presence of 0.05 to 50 ppm by weight of a quaternary ammonium compound. Further, the above composition is used for working parts such as a gear and a cam; apparatuses for image, music and telecommunication; interior and exterior parts for an automobile; and the like.

摘要翻译： 熔点167〜173℃，含有不高于5000ppm的低分子量聚甲醛共聚物的聚甲醛共聚物及其组合物。 共聚物可以通过在0.05〜50重量ppm的季铵化合物的存在下对不稳定的端基进行热处理而得到。 此外，上述组合物用于诸如齿轮和凸轮的工作部件; 图像，音乐和电讯设备; 汽车内外部件; 等等