index by astm 01238 condition e and density using astm d1505 68 two grams of the tma treated silica were slurried in toluene a premixed solution was prepared by adding 36 4 mg of the metallocene 1 cyclopentadienyl 1 flourenyl 1 but 3 enyl 1 methyl methane zirconium dichloride to 10 5 ml of mao 10 wt in toluene and stirring for 15 minutes the premixed catalyst solution was then added to the silica slurry and the mixture was stirred for 15 minutes once the stirring of the mixture was completed gaseous ethylene was added at 5 psig and room temperature to the premixed catalyst solution and silica slurry mixture after 40 minutes of interaction with the ethylene the mixture weighed an additional 1 6619 grams the mixture was then washed once with a 20 ml portion of toluene and twice with 20 ml portions of pentane the filtrate was then dried for 1 hour under a high vacuum the above procedure produced an isolated solid product weighing 3 681 grams in this run two grams of the tma treated silica were slurried in toluene a premixed solution was prepared by adding 36 4 mg of the metallocene 1 cyclopentadienyl 1 flourenyl 1 but 3 enyl 1 methyl methane zirconium dichloride and 10 5 ml of mao 10 wt in toluene and stirring for 15 minutes the premixed solution was then added to the silica toluene slurry and stirred for 15 minutes upon completion of stirring gaseous ethylene was added at 5 psig and room temperature to the premixed catalyst solution and silica slurry mixture after 1 hour and 42 minutes of contact the mixture weighed an.