公开(公告)号：US5917100A

公开(公告)日：1999-06-29

申请号：US864211

申请日：1997-05-28

申请人： Ludwig Bohm ,  Hans-Friedrich Herrmann ,  Joachim Berthold ,  Gerd Hohner ,  Rainer Lecht ,  Hans Joachim Vetter

发明人： Ludwig Bohm ,  Hans-Friedrich Herrmann ,  Joachim Berthold ,  Gerd Hohner ,  Rainer Lecht ,  Hans Joachim Vetter

IPC分类号： C08F4/654 ,  C08F4/60 ,  C08F4/626 ,  C08F4/634 ,  C08F4/635 ,  C08F10/00 ,  C08F110/00 ,  C10L1/16 ,  C07C2/24

CPC分类号： C08F10/00 ,  Y10S526/905

摘要： A catalyst formed by the reaction of a magnesium alkoxide dispersion having a particle size of from 100 to 3000 nm with a compound of a metal selected from the group comprising titanium, zirconium, vanadium and chromium and then with a chlorine-containing organoaluminum compound possesses a very good hydrogen responsiveness and a high activity even in the presence of molecular-weight regulators such as hydrogen. The catalyst is therefore outstandingly suitable for the production of low molecular-weight polyolefins. The catalyst makes possible the production of waxes having a reduced residual ash content. The large particle diameter and the low fines content of the polymer powder produced by suspension polymerization with this catalyst enables easy removal of the suspension medium and drying. The catalyst is furthermore advantageously used in solution polymerization and, because of the large particle diameter, in gas phase polymerization for producing low molecular-weight poly-1-olefins.

摘要翻译： 由粒径为100〜3000nm的烷氧基镁分散体与选自钛，锆，钒，铬的金属化合物反应形成的催化剂，然后与含氯有机铝化合物反应形成的催化剂具有 甚至在分子量调节剂如氢气的存在下也具有非常好的氢响应性和高活性。 因此，催化剂非常适合于生产低分子量聚烯烃。 该催化剂使得生产具有减少的残余灰分含量的蜡成为可能。 通过与该催化剂的悬浮聚合制备的聚合物粉末的大粒径和低细粉含量可以容易地除去悬浮介质并干燥。 此外，催化剂有利地用于溶液聚合，并且由于粒径大，用于制备低分子量聚-1-烯烃的气相聚合。