Retreating comminuted olefin polymerization catalyst with a titanium (IV) compound and an ester
申请人:AMOCO CORPORATION
公开号:EP0095290A1
公开(公告)日:1983-11-30
A comminuted, supported polymerization catalyst for alpha-olefins comprises (A) an organoaluminum compound and (B) a solid titanium-containing component formed by (1) comminuting a solid reaction product comprising (a) at least one halogen-containing compound of titanium(IV); (b) at least one electron donor; and (c) at least one hydrocarbon-insoluble magnesium-containing compound; and (2) retreating such comminuted product with (a) at least one halogen-containing compound of titanium(IV); and (b) at least one organic acid ester; and, optionally, at least one organic acid ester and/or at least one haloalkylchlorosilane.
Composition comprising a transition metal component and magnesium hydrocarbyl carbonate. Composition can be prepared by reacting suspension of magnesium alcoholate with carbon dioxide to form a magnesium hydrocarbyl carbonate and reacting magnesium hydrocarbyl carbonate with transition metal component. When the suspending liquid comprises an alcohol, the magnesium hydrocarbyl carbonate dissolves and is subsequently precipitated with an antisolvent comprising metal alkyl or transition metal halide. When the suspending liquid is substantially free of alcohol, the magnesium hydrocarbyl carbonate suspension is reacted with metal alkyl and transition metal compound.
Composition comprising a transition metal component and magnesium carboxylate prepared by reacting a solution of hydrocarbyl magnesium compound with carbon dioxide to precipitate a magnesiumm carboxylate and reacting magnesium carboxylate with transition metal component.
A solid-hydrocarbon insoluble, alpha-olefin polymerization catalyst component with superior activity, stereospecificity and morphology characteristics, comprises the product formed by a) complexing a magnesium alkyl composition with an ortho disubstituted hindered aromatic acid ester; b) reacting the resulting complex with a compatible precipitation agent to form a solid component; and c) reacting the resulting solid with a titanium (IV) compound and an electron donor compound in a suitable diluent.
一种具有优异活性、立体特异性和形态特征的不溶于碳氢化合物的固体α-烯烃聚合催化剂组分,由以下步骤形成的产物组成:a) 镁烷基组合物与正交二取代受阻芳香酸酯络合;b) 所得络合物与相容沉淀剂反应形成固体组分;以及 c) 所得固体与钛(IV)化合物和电子供体化合物在合适的稀释剂中反应。
Shishido; Nozaki, Journal of the American Chemical Society, 1947, vol. 69, p. 963