Polymers with low gel content and enhanced gas-fading

作者: Michael E. Gelbin , Jonathan S. Hill , Maurice Power , Hayder Zahalka

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摘要: A polymer stabilizing composition comprising a sterically hindered phenol and phosphite that provides low gel content enhanced resistance to gas-fading. The stabilizer is particular useful for polyethylene homopolymers copolymers, such as linear density polyethylenes produced from metallocene catalyst. selected 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, 1,3,5-tris-(3,5-di-tert-butyl-4- hydroxybenzyl)-2,4,6-trimethylbenzene. preferably liquid two or more alkylated aryl phosphites.

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