Process for the production of high molecular weight polyoxymethylene by the polymerization of tetraoxane
    2.
    发明授权
    Process for the production of high molecular weight polyoxymethylene by the polymerization of tetraoxane 失效
    通过四氧化硅的聚合生产高分子量聚甲醛的方法

    公开(公告)号:US3917563A

    公开(公告)日:1975-11-04

    申请号:US40849073

    申请日:1973-10-23

    IPC分类号: C08G2/10

    CPC分类号: C08G2/10

    摘要: Pure and high molecular weight polyoxymethylene can be efficiently and economically produced in good yield by the polymerization of tetraoxane using a radical-forming material such as a peroxide, some nitrogen-containing compounds, a gaseous mixture containing ozone, an aqueous or organic solvent solution of hydrogen peroxide, and the like without requiring the coexistence of any known initiators for cationic polymerization.

    摘要翻译: 通过使用自由基形成材料如过氧化物,一些含氮化合物,含臭氧的气体混合物,含有臭氧的水溶液或有机溶剂溶液,可以有效地和经济地制备纯的和高分子量的聚甲醛, 过氧化氢等,而不需要任何已知的用于阳离子聚合的引发剂共存。

    Novel process for preparing oxymethylene polymer
    3.
    发明授权
    Novel process for preparing oxymethylene polymer 失效
    制备聚氧乙烯聚合物的新工艺

    公开(公告)号:US3860562A

    公开(公告)日:1975-01-14

    申请号:US31579272

    申请日:1972-12-18

    IPC分类号: C08G2/10 C08G1/20

    CPC分类号: C08G2/10

    摘要: Tetraoxane is polymerized by means of an electron acceptor substance used as polymerization initiator in the absence or presence of a saturated aliphatic carboxylic acid anhydride and/or an acetal, to obtain an oxymethylene polymer having thermal stability. An ionizing radiation or a light can, if desired, concomitantly be employed before and/or in the course of polymerization.

    摘要翻译: 在不存在或不存在饱和脂肪族羧酸酐和/或缩醛的情况下,通过用作聚合引发剂的电子受体物质聚合四烷,得到具有热稳定性的甲醛聚合物。