The Molecular Weight of Propylene/Ethylene Copolymers obtained by the Metallocene CatalystNo AbstractTakahama, T.STUDIES IN SURFACE SCIENCE AND CATALYSIS
Propylene 42.08 R-11 137.37 R-12 120.92 R-22 86.48 R-114 170.93 R-123 152.93 R-134a 102.03 R-611 60.05 Styrene 104.152 Sulfur 32.02 Sulfur Dioxide (Sulphur Dioxide) 64.06 Sulfuric Oxide 48.1 Toluene, toluol 92.141 Triptane 100.205 Xenon 131.30 o - Xylene, xylol 106.168 Water Vapor - Stea...
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 ...
Copolymeras of ethylene and propylene, patented by a number of leading foreign firms, are widely used as pour depressants for improving the low-temperature properties of diesel fuel and manufacture of winter grades. Their number-average molecualr weight is from 1000 to 3000 and the polydispersity ...
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...
PROBLEM TO BE SOLVED: To obtain a high-molecular-weight copolymer by copolymerizing propylene with a comonomer in the presence of a specified metallocene catalyst system. ;SOLUTION: A starting material comprising 99.95-30wt.%, based on the total polymer, propylene and 0.5-70wt.% at least one...
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...
High-molecular-weight polypropylene having a broad molecular-weight distribution The invention relates to a high-molecular-weight copolymer comprising ethylene and propylene units which has an ethylene content in the range from 1 to 10% by weight, a melt flow rate MFR (230/5) of <5 dg/min an...
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...
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...