Polyacetal stabilizer formulation with improved color stability
    8.
    发明授权
    Polyacetal stabilizer formulation with improved color stability 失效
    具有改善颜色稳定性的聚缩醛稳定剂配方

    公开(公告)号:US4843115A

    公开(公告)日:1989-06-27

    申请号:US154439

    申请日:1988-02-09

    IPC分类号: C08K5/3492 C08L59/02

    CPC分类号: C08K5/3492 C08L59/02

    摘要: An oxymethylene polymer composition which exhibits a reduced tendency to form mold deposits upon molding, reduced tendency to discolor under thermal stress and low extractable formaldehyde levels is provided by utilizing as a stabilizer a major amount of superpolyamide and a minor amount of a cyclic amidine compound of the formula: ##STR1## wherein R is phenyl, polynuclear aromatic, heterocyclic, cycloaliphatic and aliphatic containing at least 6 carbon atoms, as well as substituted derivatives of the listed substituents.

    摘要翻译: 通过以大量的超聚酰胺和少量的环状脒化合物的稳定剂作为稳定剂,提供了在成型时表现出模具沉积的趋势降低的趋势,在热应力下降低的倾向和低可提取甲醛水平的甲醛聚合物组合物 其中R是苯基,含有至少6个碳原子的多核芳族,杂环,脂环族和脂族,以及所列取代基的取代衍生物。