Solid polyaluminoxane composition, olefin polymerization catalyst, olefin polymer production method and solid polyaluminoxane composition production method
申请人:MITSUI CHEMICALS, INC.
公开号:US10150823B2
公开(公告)日:2018-12-11
An object of the invention is to provide a solid polyaluminoxane composition suitably used as a cocatalyst and a catalyst carrier in combination with an olefin oligomerization or polymerization catalyst, without the use of solid inorganic carriers such as silica. The solid polyaluminoxane composition of the invention includes a polyalkylaluminoxane and a trialkylaluminum, and has a solubility in n-hexane at 25° C. of less than 0.50 mol % as measured by a specific method (i), a solubility in toluene at 25° C. of less than 1.0 mol % as measured by a specific method (ii), and a 13 mol % or more molar fraction of alkyl groups derived from the trialkylaluminum moieties relative to the total number of moles of alkyl groups derived from the polyalkylaluminoxane moieties and the alkyl groups derived from the trialkylaluminum moieties as measured with respect to tetrahydrofuran-d8 soluble components by a specific method (iii).
本发明的一个目的是提供一种固体聚铝氧烷组合物,该组合物可作为催化剂和催化剂载体与烯烃低聚或聚合催化剂结合使用,而无需使用固体无机载体,如二氧化硅。本发明的固体聚铝氧烷组合物包括一种聚烷基铝氧烷和一种三烷基铝,在 25° C 的正己烷中的溶解度按特定方法(i)测定小于 0.50 摩尔%,在 25° C 的甲苯中的溶解度按特定方法(ii)测定小于 1.通过特定方法(ii)测定,在 25° C 的正己烷中的溶解度小于 0.50 摩尔%;通过特定方法(iii)测定,在 25° C 的甲苯中的溶解度小于 1.0 摩尔%;通过特定方法(ii)测定,相对于四氢呋喃-d8 可溶组分,来自三烷基铝分子的烷基的摩尔分数为 13 摩尔%或更多。