PROCESS FOR THE MANUFACTURE OF POLYMERS AND COPOLYMERS OF PROPYLENE USING A ZIEGLER-NATTA CATALYST SYSTEM
Polymers of propene are prepared using a Ziegler-Natta catalyst system consisting of (1) a titanium component which contains titanium, magnesium, chlorine and a benzenecarboxylic acid derivative on a carrier, (2) an aluminum component and (3) a silane component. The process employs a titanium compon...
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Main Authors | , |
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Format | Patent |
Language | English German |
Published |
17.10.1990
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Edition | 4 |
Subjects | |
Online Access | Get full text |
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Summary: | Polymers of propene are prepared using a Ziegler-Natta catalyst system consisting of (1) a titanium component which contains titanium, magnesium, chlorine and a benzenecarboxylic acid derivative on a carrier, (2) an aluminum component and (3) a silane component. The process employs a titanium component (1) which is obtained by a method in which (1.1) first a solid-phase intermediate is prepared from (I) magnesium chloride, (II) an alkanol, (III) a carrier which in turn consists of a finely divided inorganic oxide carrier material which has been pretreated with an alkylchlorosilane, (IV) titanium tetrachloride and (V) a phthalic acid derivative, in such a way that (1.1.1) first (I) is reacted with (II), (1.1.2) then the carrier (III) is introduced into the substance resulting from (1.1.1), (1.1.3) thereafter the solid-phase substance resulting from (1.1.2) is reacted with (IV) in a liquid hydrocarbon, with the proviso that (V) is also introduced in (1.1.1) or (1.1.2) or (1.1.3), the (1.2) the solid-phase substance resulting from (1.1) is extracted with titanium tetrachloride, and finally the solid-phase substance resulting from (1.2) is extracted with a liquid hydrocarbon. |
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Bibliography: | Application Number: EP19880105038 |