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    • 1. 发明授权
    • Symmetric substituted benzaldehyde alditol derivatives and compositions and articles containing same
    • 对称取代苯甲醛醛糖衍生物和含有它们的组合物和制品
    • US06599964B2
    • 2003-07-29
    • US09815476
    • 2001-03-23
    • Jeffery R. JonesNathan A. Mehl
    • Jeffery R. JonesNathan A. Mehl
    • C08K515
    • C07D493/04A61K8/345A61K8/498A61Q15/00C08K5/1575C08L23/00
    • Plastic additives which are useful as nucleating agents and which are especially useful for improving the optical properties of polymeric materials are provided. More particularly, this invention relates to certain symmetric DBS compounds comprising specific pendant groups, such as C3-C6 alkyl, C1-C6 alkoxy, phenyl, and methylenedioxy (as the combination of two available sites on the pertinent ring system), as well as wherein the individual benzylidene ring systems may be indan or tetralin. Because of the required symmetrical configuration, the pendant groups on each ring system of the dibenzylidene sorbitol compound must be located at the same positions. Such compounds may be added to or incorporated within polymer compositions which may then be utilized within, as merely examples, food or cosmetic containers and packaging.
    • 提供可用作成核剂并且可用于改善聚合物材料的光学性能的塑料添加剂。 更具体地,本发明涉及包含特定侧基的某些对称DBS化合物,例如C 3 -C 6烷基,C 1 -C 6烷氧基,苯基和亚甲二氧基(作为相关环系上的两个可用位点的组合),以及 其中各个亚苄基环系可以是茚满或四氢化萘。 由于所需的对称构型,二亚苄基山梨糖醇化合物的每个环系上的侧基必须位于相同的位置。 这样的化合物可以加入或掺入聚合物组合物中,然后这些化合物可以仅用于食品或化妆品容器和包装。