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    • 8. 发明申请
    • METHODS OF CONTROLLING PROPERTIES IN MULTIMODAL SYSTEMS
    • 多模式系统中控制属性的方法
    • US20100144967A1
    • 2010-06-10
    • US12442157
    • 2006-09-21
    • John R. ParrishMark L. Nelson
    • John R. ParrishMark L. Nelson
    • C08F2/00C08F2/01
    • G05B13/042
    • The invention is directed to a polymerization system and method of controlling resin properties during the production of bimodal and multimodal polymer compositions using at least one manipulated variable to minimize dynamic deviations from polymer characteristics. In particular embodiments, the method of control includes determining a property of the resin based on a current and/or previous values or estimates or process variables or polymer characteristics. In this manner the control actions serve to reduce process upsets or facilitate in transitioning to a new product or grade to reduce the amount of off-grade resin material produced during transition or during steady state manufacture.
    • 本发明涉及使用至少一个操作变量来制备双峰和多峰聚合物组合物期间控制树脂性能的聚合体系和方法,以使与聚合物特性的动态偏差最小化。 在具体实施方案中,控制方法包括基于当前和/或先前的值或估计或过程变量或聚合物特性确定树脂的性质。 以这种方式,控制动作用于减少过程紊乱或促进转换到新产品或等级,以减少过渡期间或在稳态制造期间产生的脱级树脂材料的量。