Polyacetal stabilizer formulation with improved color stability
    7.
    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。

    Hydrolysis-resistance composition
    8.
    发明授权
    Hydrolysis-resistance composition 失效
    耐水解组合物

    公开(公告)号:US07375167B2

    公开(公告)日:2008-05-20

    申请号:US11124730

    申请日:2005-05-09

    IPC分类号: C08L67/00 C08L63/00

    摘要: A composition for forming an article having an improved resistance to hydrolysis is disclosed. The composition comprises a polyalkylene terephthalate and/or polyester thereof, a triglyceride, an epoxy component, and a plasticizer. The polyalkylene terephthalate has terminal carboxyl groups and hydroxyl groups and internal ester linkages. The triglyceride has at least one acid component with 6 to 30 carbon atoms and at least one epoxy group for reacting with the carboxyl groups. The epoxy component has internal aromatic groups and at least one terminal epoxy group for reacting with the carboxyl groups. The plasticizer comprises an esterification product of a polyoxyalkylene glycol with 1 to 20 carbon atoms and an aliphatic carboxylic acid with 1 to 25 carbon atoms for improving melt flow properties and for reducing hydrolysis of the composition.

    摘要翻译: 公开了一种用于形成具有改善的抗水解性的制品的组合物。 组合物包含聚对苯二甲酸亚烷基酯和/或其聚酯,甘油三酯,环氧组分和增塑剂。 聚对苯二甲酸亚烷基酯具有末端羧基和羟基和内部酯键。 甘油三酸酯具有至少一个具有6至30个碳原子的酸组分和至少一个用于与羧基反应的环氧基团。 环氧组分具有内部芳族基团和至少一个用于与羧基反应的末端环氧基团。 增塑剂包括具有1至20个碳原子的聚氧亚烷基二醇的酯化产物和具有1至25个碳原子的脂肪族羧酸,以改善熔体流动性能并减少组合物的水解。