| 摘要 |
<p>The present invention relates to a novel ethylene polymer having long chain branches and made by a continuous slurry polymerization process. In general, the slurry polymerization process comprises a supported catalyst and ethylene conversion rates greater than 92 percent. More particularly, the present invention is concerned with a novel ethylene polymer having unique molecular and comonomer features as well as long chain branching wherein the polymer is made by a continuous slurry loop polymerization process in the presence of a solid supported constrained geometry catalyst system. The unique features pertain to a novel ethylene homopolymer characterized as having a high density and a Mw/Mn ratio which decreases as molecular weight increases and a novel ethylene interpolymer characterized as having a reversed comonomer distribution relative to conventional Ziegler-catalyzed ethylene interpolymers. The invention also relates to blend compositions containing the novel ethylene polymer obtained by dry or melt mixing the already produced components, or through in situ production by in parallel or in series arranged reactors. The novel ethylene polymers can be used in applications such as films, blow molded, injection molded, and rotomolded articles, fibres, coating, and cable and wire coatings and jacketings and various forms of pipe.</p> |
