Patent ID: 8975209
Filing Date: 2015-03-10
Classification: C07B,C07F,C08F,Y10S

Abstract:
1. A supported polymethylaluminoxane composition solid particle comprising a coated layer of polymethylaluminoxane composition, wherein: the supported polymethylaluminoxane composition includes trimethylaluminum and polymethylaluminoxane represented by formula (I): an aluminum content of the polymethylaluminoxane composition is 36 to 41 mass %, a mole fraction of methyl groups contributed from trimethylaluminum moieties relative to total moles of methyl groups is about 12 mol % or less, and wherein the supported polymethylaluminoxane composition solid particle is prepared by heating an unsupported polymethylaluminoxane composition in an aromatic hydrocarbon solution together with a solid support at a temperature in the range of about 80 to 200° C. for a period of about 5 minutes to less than 24 hours.