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Controlled rheology formulations containing high melt strength polypropylene for extrusion coating
Controlled rheology formulations containing high melt strength polypropylene for extrusion coating
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机译:包含高熔体强度聚丙烯的可控流变配方,用于挤出涂层
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摘要
A process of extruding a blend of an irradiated first propylene polymer and a non-irradiated second propylene polymer, where the first propylene polymer comprises a non-phenolic stabilizer. The irradiation of the first propylene polymer extrudate is conducted in a reduced oxygen environment, and the irradiated first propylene polymer and the non-irradiated second propylene polymer are blended at a temperature below their respective melting points. The blend has a viscosity retention of 20 to 35%.
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