ISSN:
1436-2449
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Summary In the ethylene-propylene copolymerization, two catalyst systems were examined. The one(cat-[a]) was the solid MgCl2-containing Ti treated with ethyl benzoate together with AlEt3, and the other(cat-[c]) was based on a homogeneous mixture of MgCl2 dissolved in 2-ethylhexanol/n-decane and TiCl4, which was treated with AlEt2Cl. Both catalyst systems exhibited very high activity in comparison with the conventional catalysts of TiCl3-AlEt2Cl and VOCl3-AlEt2Cl. These two new systems, however, are different from each other in micro structure of the product copolymer,i.e., the latter(cat-[c]) brings about more random distribution of the monomeric units and also the decreased regiospecificity concerning the arrangement of propylene unit.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00263332
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