发明名称 |
Ziegler-Natta catalyst for prodn. of atactic (co)polyolefin - produced from titanium tetra:chloride, organo-magnesium cpd. and organo-aluminium cpd. |
摘要 |
<p>Ziegler-Natta catalyst for the polymerisation of 3-8C 1-olefins and their copolymerisation, opt. with C2H4, to atactic polyolefins, opt. in the presence of H2, consists of TiCl4 and organo-Mg cpd. as catalyst and organo-Al cpd. as cocatalyst. Improvement comprises (a) reducing TiCl4 with an organo-Mg cpd. dissolved or suspended in an inert liq. hydrocarbon and opt. sepn. of the insoluble reaction prod. (b) impregnating the insoluble solid with TiCl4; (c) reacting with an organo-Al cpd. in an inert liq. hydrocarbon and sepg. the insoluble reaction prod. from the mixt.; and (d) activating the reaction prod. with an organo-Al cpd. Before activation in stage (d), the catalyst pref. is treated first with a Lewis base and then with a Lewis acid. Very high activity and high atacticity are obtd. Atactic polyolefins are useful e.g. in various coatings.</p> |
申请公布号 |
DE2751807(A1) |
申请公布日期 |
1979.05.23 |
申请号 |
DE19772751807 |
申请日期 |
1977.11.19 |
申请人 |
VEBA-CHEMIE AG |
发明人 |
RUDOLPH,JOCHEN,DIPL.-CHEM.DR.;DOERK,KLAUS,DIPL.-CHEM.DR.;TOBEN,BERNHARD,DIPL.-ING. |
分类号 |
C08F4/64;C08F10/00;(IPC1-7):C08F10/00 |
主分类号 |
C08F4/64 |
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