Patent ID: 8778827

Claim:
A catalyst composition comprising: (a) a binuclear chromium(II) complex; (b) a ligand of the general structure (A) R 1 R 2 P—N(R 3 )—P(R 4 )—N(R 5 )—H or (B) R 1 R 2 P—N(R 3 )—P(R 4 )—N(R 5 )—PR 6 R 7 , wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 and R 7 are independently selected from halogen, amino, trimethylsilyl, C 1 -C 10 -alkyl, aryl and substituted aryl; and (c) an activator or co-catalyst.