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Methods for Improving Color Stability in Polyethylene Resins
Methods for Improving Color Stability in Polyethylene Resins
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机译:改善聚乙烯树脂颜色稳定性的方法
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摘要
Polymer compositions containing a titanated chromium-based ethylene polymer, 150-350 ppm of zinc stearate and/or calcium stearate, 50-5000 ppm of a phenolic antioxidant, 200-3000 ppm of a diphosphite antioxidant, and optionally, 200-3000 ppm of a monophosphite antioxidant, are described. These polymer compositions have improved long-term color stability, as well as lower levels of color formation after aging.
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