ETHYLENE-PROPYLENE LINEAR COPOLYMER AS VISCOSITY MODIFIERS

In some embodiments, ethylene-propylene random copolymer as a viscosity modifier is synthesized with pyridyldiamido catalyst systems and a chain transfer agent. In some embodiments, the present disclosure provides for ethylene-propylene random copolymer having an ethylene content between about 45 wt...

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Bibliographische Detailangaben
Hauptverfasser:	HAGADORN JOHN R, BROBEY BRITNI J, KOLB RAINER, CANICH JO ANN M, JIANG PEIJUN, ZHANG JINGWEN, SHIVOKHIN MAKSIM
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS FUELS LUBRICANTS LUBRICATING COMPOSITIONS MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PEAT PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MONOXIDE THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION
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Beschreibung
Zusammenfassung:	In some embodiments, ethylene-propylene random copolymer as a viscosity modifier is synthesized with pyridyldiamido catalyst systems and a chain transfer agent. In some embodiments, the present disclosure provides for ethylene-propylene random copolymer having an ethylene content between about 45 wt% and about 55 wt%. In some embodiments, the ethylene-propylene random copolymer is used as a viscosity modifier in a lubricating composition and a fuel composition. 在一些实施方式中，使用吡啶基二氨基催化剂体系和链转移剂合成了作为粘度改性剂的乙烯-丙烯无规共聚物。在一些实施方式中，本发明提供了具有约45wt％至约55wt％的乙烯含量的乙烯-丙烯无规共聚物。在一些实施方式中，乙烯-丙烯无规共聚物在润滑组合物和燃料组合物中用作粘度改性剂。