发明名称 |
Polyolefin prodn. with high bulk density and good processability |
摘要 |
Prodn. of polyolefins (I) by polymerisation of alpha-olefins at 50-150 deg.C and 1-40 bar in the presence of a catalyst consisting of a transition metal component (A) and an organometallic cpd. (component B); the novelty is that (A) is prepd. without sepn. of intermediates, by (a) reaction of an organomagnesium cpd. of formula (n-Bu)x(n-octyl)yMg (II) (with x = 1.2-1.7; y = 0.3-0.8) with 0.5-2.5 mols. chlorinated hydrocarbon (III) (w.r.t. 1 mol. II) at 30-110 deg.C, (b) treatment of the suspension obtd. with 0.1-1 mol. electron donor (IV) (per g-atom Mg in the solid) at 0-100 deg.C and (c) reaction of the support material obtd. with 0.5-2 mols. (per g-atom Mg in the support) of a cpd. of formula TiXm(OR)4-m (V), at 30-120 deg.C (with R = 2-10C alkyl; X = Hal; m = 0-4). Pref. (IV) is diethyl sulphite (IVA) or Me2Si(OEt)2 (IVE), and (V) is TiCl4.
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申请公布号 |
DE4019925(A1) |
申请公布日期 |
1992.01.02 |
申请号 |
DE19904019925 |
申请日期 |
1990.06.22 |
申请人 |
HOECHST AG, 6230 FRANKFURT, DE |
发明人 |
THUM, GERHARD, DR., 6238 HOFHEIM, DE |
分类号 |
C08F4/654;C08F4/60;C08F4/646;C08F10/00 |
主分类号 |
C08F4/654 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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