Process for preparing propylene copolymers

The present invention relates to an olefin polymerization process, wherein propylene and 1-butene and optionally ethylene are reacted in the presence of a Ziegler-Natta catalyst system so as to obtain a polypropylene, wherein the polypropylene comprises 1-butene-derived comonomer units in an amount...

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Hauptverfasser: RESCONI LUIGI, TOLTSCH WILFRIED
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creator RESCONI LUIGI
TOLTSCH WILFRIED
description The present invention relates to an olefin polymerization process, wherein propylene and 1-butene and optionally ethylene are reacted in the presence of a Ziegler-Natta catalyst system so as to obtain a polypropylene, wherein the polypropylene comprises 1-butene-derived comonomer units in an amount of from 0,5 to 15 wt% and optionally ethylene-derived comonomer units in an amount of up to 3 wt%, and the Ziegler-Natta catalyst system comprises an external donor of the formula (I) (R3)z(R2O)YSi(R1)x (I). 本发明涉及烯烃聚合方法,其中在齐格勒-纳塔催化剂体系的存在下使丙烯和1-丁烯和任选的乙烯反应得到聚丙烯,其中聚丙烯包括0.5至15重量%范围内的量的1-丁烯衍生的共聚单体单元和任选的多达3重量%的量的乙烯衍生的共聚单体单元,且齐格勒-纳塔催化剂体系包括式(I)(R)(RO)Si(R)的外部给体。(R)(RO)Si(R)(I)。
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subjects CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
title Process for preparing propylene copolymers
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