Patent ID: 7129306
Filing Date: 2006-10-31
Classification: C08F,C10M,C10N,Y10S

Abstract:
1. A substantially amorphous poly(α-olefin) possessing a M w of from about 500 to about 50,000, a M w /M n of from about 1.0 to about 10, a Kv 100 of from about 10 to about 10,000, an iodine number of from about 0.0 to about 10, and a T g of below about −60° C., obtained from the polymerization of at least one α-olefin having from 2 to about 20 carbon atoms and prepared by a process comprising polymerizing the monomer in the presence of hydrogen and a catalytically effective amount of a catalyst, wherein the catalyst comprises the product obtained by combining a metallocene catalyst with a cocatalyst, the metallocene catalyst being at least one meso compound of general formula: wherein: A M R R ═BR 11 , ═AlR 11 , —Ge—, —Sn—, —O—, —S—, ═SO, ═SO 2 , ═NR 11 , ═CO, ═PR 11 and ═P(O)R 11 , where R 11 , R 12 , and R 13 are independently selected from the group consisting of hydrogen, halogen, C 1 –C 10 alkyl, C 1 –C 10 fluoroalkyl, C 6 –C 10 aryl, C 6 –C 10 fluoroaryl, C 1 –C 10 alkoxy, C 2 –C 10 alkenyl, C 7 –C 40 arylalkyl, C 8 –C 40 arylalkenyl, and C 7 –C 40 alkylaryl, or, alternatively, R 11 can be combined with R 12 or R 11 can be combined with R 13 , in each case with the atoms connecting them, to form a ring; and M 2 is selected from the group consisting of silicon, germanium, and tin; R m and n are identical or different and are zero, 1, or 2, with m plus n being zero, 1 or 2.