专利名称：Advanced Quality Control Tools for
Manufacturing Bimodal and MultimodalPolyethylene Resins
发明人：Youlu Yu,Paul J. DesLauriers,Yongwoo Inn申请号：US15908033申请日：20180228
公开号：US20190263943A1公开日：20190829
专利附图：
摘要：A method of determining multimodal polyethylene quality comprising thesteps of (a) providing a multimodal polyethylene resin sample; (b) determining, in any
sequence, the following: that the multimodal polyethylene resin sample has a melt indexwithin 30% of a target melt index; that the multimodal polyethylene resin sample has adensity within 2.5% of a target density; that the multimodal polyethylene resin samplehas a dynamic viscosity deviation (% MVD) from a target dynamic viscosity of less thanabout 100%; that the multimodal polyethylene resin sample has a weight averagemolecular weight (M) deviation (% MD) from a target Mof less than about 20%; and thatthe multimodal polyethylene resin sample has a gel permeation chromatography (GPC)curve profile deviation (% GPCD) from a target GPC curve profile of less than about 15%;and (c) responsive to step (b), designating the multimodal polyethylene resin sample as ahigh quality resin.
申请人：Chevron Phillips Chemical Company LP
地址：The Woodlands TX US
国籍：US
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