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    • 5. 发明申请
    • POLYMERS WITH LOW GEL CONTENT AND ENHANCED GAS-FADING
    • 具有低凝胶含量和增强气体渐变的聚合物
    • US20100197837A1
    • 2010-08-05
    • US12604981
    • 2009-10-23
    • Hayder ZahalkaMichael E. GelbinMaurice PowerJonathan S. Hill
    • Hayder ZahalkaMichael E. GelbinMaurice PowerJonathan S. Hill
    • C08K5/5317C09K3/00C08K5/3492
    • C08K5/34924C07F9/145C08K5/005C08K5/13C08K5/526C08K2201/014C08L23/02
    • A polymer stabilizing composition comprising a sterically hindered phenol and a phosphite that provides low gel content and enhanced resistance to gas-fading. The stabilizer composition is particular useful for stabilizing polyethylene homopolymers and copolymers, such as linear low density polyethylenes produced from metallocene catalyst. The sterically hindered phenol is selected from the group consisting of 1,3,5-tris-(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)isocyanurate, 1,3,5-tris-(3,5-dicyclohexyl-4-hydroxybenzyl)isocyanurate, 1,3,5-tris-(3,5-di-tert-butyl-4-hydroxybenzyl)isocyanurate, 1,3,5-tris(4-t-butyl-3-hydroxy-2,6-dimethylbenzyl)-1,3,5-Triazine-2,4,6-(1H,3H,5H)-trione, and 1,3,5-tris-(3,5-di-tert-butyl-4-hydroxybenzyl)-2,4,6-trimethylbenzene. The phosphite preferably is a liquid phosphite composition comprising two or more alkylated aryl phosphites.
    • 一种聚合物稳定化组合物,其包含空间位阻酚和亚磷酸酯,其提供低凝胶含量和增强的抗气候褪色性。 稳定剂组合物特别可用于稳定聚乙烯均聚物和共聚物,例如由茂金属催化剂制备的线性低密度聚乙烯。 空间位阻酚选自1,3,5-三(4-叔丁基-3-羟基-2,6-二甲基苄基)异氰脲酸酯,1,3,5-三 - (3,5 (3,5-二叔丁基-4-羟基苄基)异氰脲酸酯,1,3,5-三(4-叔丁基-3-羟基苄基)异氰脲酸酯, 羟基-2,6-二甲基苄基)-1,3,5-三嗪-2,4,6-(1H,3H,5H) - 三酮和1,3,5-三 - (3,5-二叔丁基 丁基-4-羟基苄基)-2,4,6-三甲基苯。 亚磷酸酯优选是包含两种或多种烷基化芳基亚磷酸酯的液体亚磷酸酯组合物。