The Molecular Weight of Propylene/Ethylene Copolymers obtained by the Metallocene CatalystNo AbstractTakahama, T.STUDIES IN SURFACE SCIENCE AND CATALYSIS
relative molecular mass- (chemistry) the sum of the relative atomic masses of the constituent atoms of a molecule molecular weight mass- the property of a body that causes it to have weight in a gravitational field chemical science,chemistry- the science of matter; the branch of the natural ...
The alternating copolymers of tetrafluoroethylene and propylene produced in emulsion polymerization by radiation and by chemical initiators were fractionated and the fine structure of the molecules was examined. The correlation between Mn and [η] was obtained asfor the fractionated samples. The molecula...
Process for production of a high molecular weight ethylene a-olefin elastomer with a metallogene alumoxane catalyst Disclosed is a process for preparing high molecular weight ethylene-伪-olefin elastomers, preferably an ethylene-propylene elastomer, by liquid phase polymerization of the requisite monomers...
Several substances can act as transfer agents in the polymerization ofbutadienebyCo catalysts.Allenesare particularly efficient, but ethylene,propyleneand also H2can be used to reduce the polymer molecular weight. The data concerning some transfer agents are listed inTable 5.303The molecular weight dist...
A polyolefin composition comprising (percentage by weight): (A) from 60 to 85% of a broad molecular weight distribution propylene polymer (component A) having a polydispersity index from 5 to 15 and melt flow rate of from 20 to 78 g/10 min (according to ASTM-D 1238, condition L); and...
本文研究了采用低分子量乙丙共聚物(LMW-EP)对聚丙烯(PP)及其共混体系的改性。 The modification of polypropylene (PP) and its blends with low molecular weight ethylene-propylene copolyme...
PROCESS FOR THE PRODUCTION OF PROPYLENE OXIDE POLYMERS 1358347 Propylene oxide polymerization KURARAY CO Ltd 14 April 1972 [17 May 1971] 17354/72 Heading C3R Propylene oxide polymers and copolymers are obtained by polymerizing in the presence of an ionic catalyst propylene oxide, alone or wi......
The synthesis of isotactic polypropylene (iPP)-based block copolymers by means of controlled isoselective polymerization of propylene with high turnover fr... H Gao,X Lu,S Chen,... - 《Macromolecules》 被引量: 0发表: 2022年 catalyst for the production of high molecular weight homo - or cop...
of polypropylene sulphide (PPS) produced using a zinc diethylate-water (ZDE) catalyst, the unusual [n] dependence on conversion, and the instability of freshly prepared polymer solutions, are shown to be due to the presence of polymeric aggregates which form during the propylene sulphide ...