Manufacturing method of solid polyaluminoxane composition

The application relates to a manufacturing method of a solid polyaluminoxane composition. The manufacturing method of the solid polyaluminoxane composition comprises the following processes of contacting the polyaluminoxane composition (A) of a solution form containing the polyalkyl aluminum oxide, the trialkylaluminium and a hydrocarbon solvent with at least one organic compound (B) containing the elements of fifteenth to seventeenth groups in the periodic table of elements at a temperature more than 40 DEG C, and on a heating condition, reacting a compound having the aluminum-carbon bonds inthe polyaluminoxane composition (A) of the solution form with the organic compound (B) to separate the solid polyaluminoxane composition. 本申请涉及固体状聚铝氧烷组合物的制造方法。本申请的固体状聚铝氧烷组合物的制造方法包含下述工序：使(A)包含聚烷基铝氧烷、三烷基铝和烃溶剂的溶液状聚铝氧烷组合物、与(B)包含元素周期表第15～17族元素的至少1种有机化合物在40℃以上的温度下接触的工序，以及，在加热条件下，使该溶液状聚铝氧烷组合物(A)中包含的具有铝-碳键的化合物与该有机化合物(B)反应，使固体状聚铝氧烷组合物析出的工序。