Additives for polymer compositions
    3.
    发明授权
    Additives for polymer compositions 失效
    聚合物组合物用添加剂

    公开(公告)号:US5643501A

    公开(公告)日:1997-07-01

    申请号:US194742

    申请日:1994-02-09

    摘要: An additive system for a polyvinyl chloride formulation for improved processability while maintaining thermal stability of the formulation, and having a low-water-blush haze and low extractability in an aqueous media, the additive system including a primary stabilizer which is a Lewis acid metal compound selected from the group consisting of organo-tin compounds and organo-zinc compounds, a secondary stabilizer selected from the group consisting of epoxide compounds having less than approximately 5.2 oxirane groups per molecule; and, an external lubricant for lubrication of the PVC formulation, wherein a critical ratio of the primary stabilizer to the secondary stabilizer maximizes thermolytic color stability while limiting generation of excessive build-up, plate-out, dark particles during the processing of the polyvinyl chloride formulation. And wherein the invention provides concentration levels of the stabilizers and an oxirane per molecule content of the secondary stabilizer which minimizes the extractbiles in aqueous media.

    摘要翻译: 一种用于改进加工性同时保持制剂的热稳定性并且在水性介质中具有低水腮红雾度和低提取性的聚氯乙烯配方的添加剂体系,该添加剂体系包括作为路易斯酸金属化合物的主要稳定剂 选自有机锡化合物和有机锌化合物,选自由每分子具有小于约5.2个环氧乙烷基团的环氧化合物组成的组的二级稳定剂; 以及用于PVC制剂的润滑的外部润滑剂,其中初级稳定剂与二级稳定剂的临界比率最大化了热溶色稳定性,同时限制了在聚氯乙烯加工过程中产生过多的积聚, 公式。 并且其中本发明提供稳定剂的浓度水平和每分子含量的环氧乙烷含量的二次稳定剂,其使水性介质中的提取物最小化。